Lead Platform Engineer (Cloud & MLOps)

🏢 Summary: The offer is for a Senior DevOps/MLOps Engineer to build, deploy, and scale production-ready machine learning pipelines for large-scale medical image analysis. The role focuses on transforming experimental ML workflows into robust, compliant, and scalable solutions within a regulated environment. You will collaborate with cross-functional teams to ensure high performance, reproducibility, and reliability of end-to-end ML systems. 🗂️ Requirements: 5+ years of experience in DevOps or MLOps, Experience building and deploying machine learning systems, Experience with ML frameworks (PyTorch, TensorFlow or JAX), Experience designing and maintaining data processing pipelines, Knowledge of full MLOps lifecycle, Advanced Python programming, Experience with Linux, Experience with Git-based workflows, Experience with CI/CD pipelines, Experience with Docker, Experience with Kubernetes, Experience with MLflow or Weights & Biases 📃 Skills: Python, PyTorch, TensorFlow, JAX, Linux, Git, CI/CD, Docker, Kubernetes, MLflow, Weights&Biases, Argo, Kubeflow, AWS, OpenCV, TypeScript, Node.js, JavaScript 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Senior DevOps/MLOps Engineer who will support the development and scaling of internal machine learning tooling for large-scale image analysis in the medical domain . In this role, you will work at the intersection of machine learning, data engineering, and DevOps , helping transform experimental ML workflows into robust, production-ready and compliant solutions . You will collaborate closely with data scientists, software engineers, and domain experts to build and maintain end-to-end ML pipelines , ensuring scalability, reproducibility, and high performance in a regulated environment. We offer a choice of employment form: B2B or Employment Contract UoP: 18 000 – 22 000 PLN gross/month B2B: 160 – 190 PLN net/hour + VAT You might be the perfect match if you are/have: At least 5 years of professional experience in DevOps, MLOps, or a similar role; Hands-on experience in building and deploying machine learning systems (excluding hosted LLM APIs), using frameworks such as PyTorch, TensorFlow, or JAX; Experience designing and maintaining data processing pipelines , ideally for image data (or similar domains, e.g. proteomics); Understand the full MLOps lifecycle : model training, validation, deployment, and monitoring; Excellent Python skills and write clean, well-tested, and maintainable code; Apply software engineering best practices (testing, code quality, documentation, performance); Solid experience with Linux environments , Git-based workflows , and CI/CD (e.g. GitHub Actions); Hands-on experience with containerization (Docker) and orchestration (Kubernetes); Have worked with MLOps tools such as MLflow or Weights & Biases. Moreover, we appreciate skills in these areas: Experience with workflow orchestration platforms (e.g. Argo Workflows, Kubeflow); Familiarity with cloud infrastructure , especially AWS; Experience with distributed systems or microservices architectures; Exposure to computer vision (e.g. OpenCV or similar); Basic knowledge of TypeScript / Node.js / JavaScript; Experience working in a regulated environment (e.g. healthcare, pharma, medtech). By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: Y ou will be invited for an HR screening to get to know your experience, expectations, and motivation; You will complete a coding test (HackerRank) to demonstrate your technical skills; You will be invited for a technical interview (~60 minutes) to discuss your approach, problem-solving, and frontend expertise in more depth; You will meet the team members to learn more about the project and see how we collaborate on a daily basis. Submit your application online in one easy step! Apply now! You will earn: UoP: 18 000 – 22 000 PLN gross/month B2B: 160 – 190 PLN net/hour + VAT

🏢 Summary: Senior Fullstack Engineer role focused on building AI-driven pharmatech solutions using React and Python for a UK-based client. The position involves equal work on frontend and backend, contributing to feature design in a small, international Scrum-based team. The project leverages modern technologies to develop software supporting drug discovery in Life Sciences. 🗂️ Requirements: 5+ years experience as Fullstack Engineer in commercial projects, Strong experience with Python 3.x, Proficiency in JavaScript and TypeScript, Commercial experience with React, Experience with Django, DRF and Django ORM, Experience with relational databases (Postgres, Snowflake or Oracle), Experience working with cloud environments (GCP preferred), Fluent English (C1), Residence in Poland 📃 Skills: Python, Django, DRF, ORM, JavaScript, TypeScript, React, PostgreSQL, Snowflake, Oracle, GCP, CI/CD, FastAPI, Flask, Scrum 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people with offices in Wrocław, Warsaw, and Cracow. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for Senior Fullstack Engineer with extensive experience in React and Python . Working on this position, you can expect that: Our client is a UK-based AI-driven Pharmatech . You will become a part of interesting industry, especially if you like things like Life Sciences/Medicine. You can work on software that can change the face of inventing new drags . You will work with modern technologies and the newest versions: React 18, TypeScript, Python 3.8+ and Django ; You will cooperate with very experienced engineers in an i nternational environment on daily basis; The team is small (4-6 p.) and uses some elements of Scrum to organise their way of working – generally there is not many meetings and you actually have time to do your work; You will work equally on the frontend and backend side; From the project level, you will have an influence on new features design and requirements. What do the Engineers working on the project say: “We participate in sprint level planning as well as quarterly and annual planning; as a developer, I feel I have a voice in the decisions made.”“In my opinion the best foreign team of the three I have worked for. As far as the people are concerned they are all very nice and cool”. Hey YOU clever one, if reading this add, you feel an instant need to dive into practical techniques that boost Python’s performance, read the article of engineer who actually works in the project of our client :) You will find it HERE We offer a choice of employment form: B2B or Employment Contract UoP: 20 000 – 22 000 PLN gross/month B2B: 150 – 170 PLN net/hour + VAT You might be the perfect match if you are/have: At least 5+ years working as a Fullstack Engineer in commercial projects; A real comfort working in the Python language (pref. 3.x); Proficiency in JavaScript/TypeScript and React ; Knowledge of Django (DRF and Django ORM); Hands-on experience with database technologies such as Postgres, Snowflake or Oracle; Eager to work with cloud environment (preferred GCP); Fluent English (C1) to work seamlessly in an international environment; Location in Poland to facilitate collaboration and attendance at occasional team meetings. Moreover, we appreciate skills in these areas: Many years' experience in a similar role Familiarity with CI/CD pipelines; Other Python frameworks like FastAPI, Flask; Interest in Life Sciences and Drug Discovery . By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: 1) You will be invited to talk with an IT Recruiter , to get more information about the project, and to ensure that we fulfil your expectations; 2) The next online meeting will be focused on technical verification; 3) The last stage is about getting to know you better. We will set up a short online meeting with a client. Submit your application online in one easy step! Apply now! You will earn: UoP: 20 000 – 22 000 PLN gross/month B2B: 150 – 170 PLN net/hour + VAT

🏢 Summary: Platform Engineer role focused on building and operating AWS-based, Kubernetes-driven infrastructure in an AI-first environment. The position involves supporting AI-powered applications, migrating services to EKS, and delivering Infrastructure-as-Code while ensuring scalability, reliability, and observability. You will work in a global team bridging AI solutions with stable production cloud platforms. 🗂️ Requirements: Proficiency in at least one programming or scripting language (Python, Node.js or TypeScript), Hands-on experience with AWS (including ECS) and migration to Kubernetes/EKS, Strong knowledge of Kubernetes (EKS), Experience with Terraform for Infrastructure-as-Code, Experience with CI/CD pipelines (GitHub Actions preferred), Experience with GitOps approach (ArgoCD or similar), Experience with monitoring and observability tools (Datadog, Prometheus or similar), Experience with MongoDB (Atlas), Experience with AI-assisted development tools (Claude Code), AI-first mindset and openness to AI-driven automation 📃 Skills: AWS, ECS, Kubernetes, EKS, Terraform, Python, Node.js, TypeScript, GitHub, Actions, ArgoCD, Datadog, Prometheus, MongoDB, Atlas, Claude, Temporal 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 Join a global initiative that’s redefining how AI transforms business. 📝 We are looking for a Platform Engineer (Kubernetes, AWS, AI-first environment), who combines strong cloud‑native engineering skills with a genuine interest in AI‑driven solutions . You will be joining one of the global leaders in AI‑powered video solutions for enterprise. As part of this environment, you will work within a global team responsible for building and maintaining the infrastructure that powers intelligent agents, foundation models , and automated workflows used across the organization. Your work will bridge the fast‑evolving AI ecosystem with stable, scalable, and well‑observed production environments. Your role: Designing, operating, and continuously improving AWS-based infrastructure, supporting customer-facing applications - with a strong focus on ongoing migration of customer-facing services to Kubernetes (EKS). Delivering Infrastructure‑as‑Code using Terraform. Managing Kubernetes clusters (EKS) deployments to ensure scalable and reliable environments. Using agentic tools such as Claude Code to streamline development processes and automate cloud‑based AI and non-AI workflows. Building monitoring, logging, metrics, and observability pipelines dedicated to AI‑powered and non-AI workflows. Contributing to technical decisions through RFC-based processes, where proposals are peer-reviewed to ensure alignment before implementation. Operating with a high level of autonomy - taking ownership of solutions, proactively navigating ambiguity, and making day-to-day technical decisions within the team, while aligning changes through discussion and consensus. 👉 We offer a choice of employment form: B2B B2B: 150 – 175 PLN net/hour + VAT ✅ You might be the perfect match if you are/have: Proficiency in at least one programming or scripting language (e.g., Python, Node.js, TypeScript ) and hands‑on experience with AI‑assisted development tools such as Claude Code. Hands-on experience with AWS cloud (including ECS; understanding migration towards Kubernetes/EKS). Experience with CI/CD pipelines (preferably GitHub Actions). Experience with GitOps approach (e.g., ArgoCD). Strong Kubernetes knowledge (EKS) , CKA certification is a bonus. Practical experience using Terraform to provision and manage cloud infrastructure. Experience with monitoring and observability tools (e.g., Datadog , Prometheus or equivalent). Experience with MongoDB (especially Atlas). AI-first mindset - openness to AI-driven development and automation is required; candidates strongly opposed to AI/agentic approaches will not be considered. Experience with Temporal or similar workflow orchestration tools – nice to have. 💡By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in Cape Town, Are, and Barcelona). 🚀 Perks and benefits: Fully remote work or in our office in Wrocław; Free benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. 📌 If you apply for this position and match our expectations, then: 1) You will be invited to an HR Screening with our IT Recruiter. 2) You will have a technical interview with customer. Submit your application online in one easy step! Apply now!

🏢 Summary: Senior Software Engineer role focused on end-to-end ownership of core Python services powering computational pathology and image analysis in an AI-driven Oncology R&D environment. The position involves designing and evolving microservice architecture, ensuring scalability, reliability, and performance across distributed systems deployed on Kubernetes and AWS. The engineer will drive technical decisions and operational excellence in a production-grade cloud environment. 🗂️ Requirements: M.Sc. in Computer Science/Engineering or equivalent experience, Expert-level production experience with Python, Hands-on experience with Go, Strong knowledge of microservices architectures, Experience with distributed systems, Experience designing REST APIs, Experience with gRPC, Experience with SQL databases, Experience with NoSQL databases, Experience with object storage (S3), Experience deploying and operating services on Kubernetes, Strong Unix fundamentals, Strong Linux fundamentals, Experience with AWS services (EKS, EC2, S3, RDS, IAM, CloudWatch), Experience with CI/CD pipelines, Experience with automated testing, Security-focused engineering practices, Ability to lead technical initiatives 📃 Skills: Python, Go, Kubernetes, AWS, EKS, EC2, S3, RDS, IAM, CloudWatch, REST, gRPC, SQL, NoSQL, Unix, Linux, Microservices, DistributedSystems, CI/CD 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Senior Software Engineer (Python, Go, Kubernetes). You will take end-to-end ownership of core Python services that power computational pathology and image analysis within Oncology R&D AI, keeping them robust, scalable, and well maintained. You’ll help shape our microservice architecture by defining clear service boundaries and interfaces, guiding key design decisions, and driving improvements in reliability and performance across the platform. We offer a choice of employment form: B2B or Employment Contract UoP: 17 000 – 20 000 PLN gross/month B2B: 140 – 170 PLN net/hour + VAT You might be the perfect match if you are/have: M.Sc . in Computer Science/Engineering (or equivalent) or comparable industry experience. Expert-level production experience with Python and solid hands-on experience with Golang for building and operating services. Deep understanding of microservices, distributed systems, and API design ( REST/gRPC ), with a focus on clean contracts and handling failure modes. Practical experience with SQL and NoSQL databases, including schema design, performance tuning, and familiarity with object storage solutions (e.g., S3). Proven experience deploying and operating services on Kubernetes , along with strong Unix/Linux fundamentals. Practical knowledge of key AWS services (EKS, EC2, S3, RDS, IAM, CloudWatch) and the ability to design cost‑efficient architectures. Strong engineering practices, including CI/CD, automated testing, code reviews, documentation, and a security-first mindset. Ability to lead technical initiatives, clearly communicate trade-offs, and collaborate effectively across multidisciplinary teams. Moreover, we appreciate skills in these areas: Experience with ML/AI tooling such as PyTorch , Kubeflow, MLflow, Feast, Argo, Airflow, Ray , and model versioning/monitoring solutions. Experience with large-scale image processing or digital pathology data (e.g., whole‑slide images) using libraries such as OpenSlide , scikit-image, or OpenCV . Experience with performance engineering, including concurrency, memory profiling, high‑throughput data pipelines, and GPU/accelerator integration. Experience working in regulated environments (e.g., GxP), including data governance, privacy requirements, and developing software under regulated processes. Experience with JavaScript/TypeScript for building internal tools and dashboards. Experience with event‑driven architectures and streaming platforms (e.g., Kafka ). By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: You will be invited for an HR screening to get to know your experience, expectations, and motivation; You will complete a coding test (HackerRank) to demonstrate your technical skills; You will be invited for a technical interview (~60 minutes) to discuss your approach, problem-solving, and frontend expertise in more depth; You will meet the team members to learn more about the project and see how we collaborate on a daily basis. Submit your application online in one easy step! Apply now!

🏢 Summary: Senior Frontend Engineer (UI/UX Focus) responsible for designing and building high-performance, user-centered interfaces for AI-powered image analysis solutions. The role involves shaping frontend architecture, driving UX decisions, and developing scalable design systems in close collaboration with cross-functional teams. Position offers flexible employment options (B2B or UoP) and fully remote work. 🗂️ Requirements: Minimum 5 years of professional frontend development experience, Strong expertise in React, Strong expertise in TypeScript, Experience with hooks and state management, Hands-on experience with UI/UX design tools (Figma or Sketch), Advanced knowledge of CSS including responsive design and cross-browser compatibility, Experience with automated testing (E2E and unit/integration), Knowledge of accessibility standards (WCAG) and semantic HTML, Experience building or maintaining design systems and component libraries, Experience integrating APIs (REST or GraphQL), Knowledge of frontend performance optimization techniques 📃 Skills: React, TypeScript, JavaScript, CSS, HTML, Figma, Sketch, Playwright, Jest, TestingLibrary, WCAG, ARIA, REST, GraphQL, D3, OpenLayers, Storybook 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Senior Frontend Engineer (UI/UX Focus) who will take ownership of designing and building intuitive, high-performance user interfaces for advanced, AI-powered image analysis solutions. In this role, you will work closely with cross-functional teams — including software engineers, product owners, and domain experts — to translate complex scientific and product requirements into elegant, user-centered experiences. You will play a key role in shaping the frontend architecture, driving UX decisions, and evolving a scalable design system, ensuring both usability and technical excellence. We offer a choice of employment form: B2B or Employment Contract UoP: 15 000 – 18 000 PLN gross/month B2B: 120 – 150 PLN net/hour + VAT You might be the perfect match if you are/have: Have at least 5 years of professional experience in frontend development; Have strong expertise in React and TypeScript , including hooks, state management, and modern frontend patterns; Have hands-on experience with UI/UX design practices and tools (e.g. Figma, Sketch), including wireframing, prototyping, and user flows; Have excellent knowledge of CSS , including CSS-in-JS or utility frameworks, responsive design, and cross-browser compatibility; Have experience with automated testing (Playwright for E2E, Testing Library/Jest for unit and integration tests); Understand accessibility standards (WCAG) , semantic HTML, and ARIA best practices; Have experience building or evolving a design system and component libraries; Have worked with APIs (REST, GraphQL, or similar), including authentication, caching, and error handling; Understand frontend performance optimization (e.g. code splitting, lazy loading, profiling). Moreover, we appreciate skills in these areas: Experience with data visualization (e.g. D3, OpenLayers or similar); Familiarity with Storybook-driven development; Basic backend awareness to support effective end-to-end collaboration; Experience with analytics and telemetry (tracking user behavior, product insights). By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: You will be invited for an HR screening to get to know your experience, expectations, and motivation; You will be invited for a technical interview (~60 minutes) to discuss your approach, problem-solving, and frontend expertise in more depth; Submit your application online in one easy step! Apply now! You will earn: UoP: 15 000 – 18 000 PLN gross/month B2B: 120 – 150 PLN net/hour + VAT

🏢 Summary: The offer is for a Senior Frontend Engineer with UX experience to design and build high-performance, user-centered interfaces for AI-powered image analysis solutions. The role involves shaping frontend architecture, driving UX decisions, and developing a scalable design system in close collaboration with cross-functional teams. It provides flexible employment options, competitive compensation, and the opportunity to work on international, cutting-edge projects. 🗂️ Requirements: Minimum 5 years of professional frontend development experience, Strong expertise in React, Strong expertise in TypeScript, Experience with hooks, state management, and modern frontend patterns, Hands-on experience with UI/UX design tools (e.g. Figma, Sketch), Strong knowledge of CSS including CSS-in-JS or utility frameworks, Experience with automated testing (Playwright, Testing Library, Jest), Knowledge of accessibility standards (WCAG), semantic HTML, ARIA, Experience building or evolving design systems and component libraries, Experience working with REST or GraphQL APIs, Knowledge of frontend performance optimization techniques 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, CSS-in-JS, Playwright, Jest, TestingLibrary, WCAG, ARIA, REST, GraphQL, Figma, Sketch, D3, OpenLayers, Storybook 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Senior Frontend Engineer with UX experience who will take ownership of designing and building intuitive, high-performance user interfaces for advanced, AI-powered image analysis solutions. In this role, you will work closely with cross-functional teams — including software engineers, product owners, and domain experts — to translate complex scientific and product requirements into elegant, user-centered experiences. You will play a key role in shaping the frontend architecture, driving UX decisions , and evolving a scalable design system, ensuring both usability and technical excellence. We offer a choice of employment form: B2B or Employment Contract UoP: 15 000 – 18 000 PLN gross/month B2B: 120 – 150 PLN net/hour + VAT You might be the perfect match if you are/have: Have at least 5 years of professional experience in frontend development; Have strong expertise in React and TypeScript , including hooks, state management, and modern frontend patterns; Have hands-on experience with UI/UX design practices and tools (e.g. Figma, Sketch), including wireframing, prototyping, and user flows; Have excellent knowledge of CSS , including CSS-in-JS or utility frameworks, responsive design, and cross-browser compatibility; Have experience with automated testing (Playwright for E2E, Testing Library/Jest for unit and integration tests); Understand accessibility standards (WCAG) , semantic HTML, and ARIA best practices; Have experience building or evolving a design system and component libraries; Have worked with APIs (REST, GraphQL, or similar), including authentication, caching, and error handling; Understand frontend performance optimization (e.g. code splitting, lazy loading, profiling). Moreover, we appreciate skills in these areas: Experience with data visualization (e.g. D3, OpenLayers or similar); Familiarity with Storybook-driven development ; Basic backend awareness to support effective end-to-end collaboration; Experience with analytics and telemetry (tracking user behavior, product insights). By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: You will be invited for an HR screening to get to know your experience, expectations, and motivation; You will be invited for a technical interview (~60 minutes) to discuss your approach, problem-solving, and frontend expertise in more depth; Submit your application online in one easy step! Apply now! You will earn: UoP: 15 000 – 18 000 PLN gross/month B2B: 120 – 150 PLN net/hour + VAT

🏢 Summary: Fullstack Engineer role focused on building secure, scalable applications to support genomic data science and AI-driven insights for disease research and therapeutic target identification. The position involves developing and deploying cloud-based systems using modern TypeScript and Python stacks in AWS environments. B2B contract with fully remote work and collaboration in an international team. 🗂️ Requirements: Expertise in TypeScript and React, Expertise in Node.js, Expertise in Python and FastAPI, Experience building and deploying applications in AWS, Experience with containerization using Docker, Experience designing and securing APIs, Experience with SQL and NoSQL databases, Experience with logging, monitoring, and debugging production systems, Ability to work in Unix/Linux environments, Bash scripting skills, Fluent English (C1), Location in Poland 📃 Skills: TypeScript, JavaScript, React, Node.js, Python, FastAPI, AWS, CDK, ECS, ALB, EC2, Docker, SQL, PostgreSQL, NoSQL, LangGraph, Unix, Linux, Bash, CloudFormation, Lambda, Nginx, Flask, Playwright, Jest 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Fullstack Engineer to join a team that is expanding its genomic data science capabilities to explore data from multiple sources. The goal is to gain insights into the genomic drivers of common diseases and support the identification of novel therapeutic targets. We offer a B2B contract: 140 – 160 PLN net/hour + VAT You might be the perfect match if you are/have: ✅ Technical skills: Expertise in TypeScript (JavaScript) - React & Node.js; Expertise in Python (& FastAPI); Experience building and deploying secure and scalable apps in AWS (e.g., AWS CDK, ECS, ALB, EC2); Strong understanding of containerisation (+ deployment) - Docker ; Experience designing and securing APIs ; Experience with LangGraph and/or building agentic AI systems ; Strong knowledge of databases – SQL (PostgreSQL or similar) and NoSQL ; Experience logging, monitoring, and debugging production systems; Ability to work in Unix/Linux environments and with Bash scripting. ✅ Soft skills and others: Robust software development best practices and documentation; Proactive and self-driven, able to identify opportunities and suggest tasks rather than waiting for assignments; Strong team player , comfortable collaborating and contributing in group settings; Strong communication skills; Positive mindset and constructive approach to challenges; Initiative-taker who is not afraid to lead or push ideas forward and deliver in a fast-paced environment; Eager to learn, grow, and continuously develop new skills; Fluent English (C1) for effective collaboration in an international environment; Location in Poland (at least 5 years), enabling smooth cooperation and occasional in-person team meetings; Availability up to one month . Moreover, we appreciate skills in these areas: 5+ years of experience in a similar senior role; Strong product mindset; Familiarity with CI/CD pipelines; Familiarity with Domino Data Lab; AWS CloudFormation, CloudFormation, Lambda; Nginx; Other Python frameworks like Flask; Experience with testing frameworks/tools (e.g. Playwright, Jest); Interest in Life Sciences and Drug Discovery. By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: 1) You will be invited to an HR Screening with our IT Recruiter. 2) You will have a technical interview. 3) You will meet with a client. Submit your application online in one easy step! Apply now! You will earn: B2B: 140 – 160 PLN net/hour + VAT

🏢 Summary: Fullstack Engineer role focused on building secure, scalable applications to support genomic data science and AI-driven insights in healthcare. The position involves developing and deploying cloud-based solutions using modern TypeScript and Python stacks in AWS. B2B contract with competitive hourly rate and fully remote work option. 🗂️ Requirements: Expertise in TypeScript with React and Node.js, Expertise in Python with FastAPI, Experience building and deploying applications in AWS, Experience with AWS CDK, ECS, ALB, EC2, Strong knowledge of Docker and containerisation, Experience designing and securing APIs, Experience with LangGraph or agentic AI systems, Strong knowledge of SQL and NoSQL databases, Experience with PostgreSQL or similar databases, Experience logging, monitoring and debugging production systems, Ability to work in Unix/Linux environments, Bash scripting skills, Fluent English (C1), Location in Poland (min. 5 years), Availability up to one month 📃 Skills: TypeScript, React, Node.js, Python, FastAPI, AWS, CDK, ECS, ALB, EC2, Docker, SQL, PostgreSQL, NoSQL, LangGraph, Bash, Linux, Unix, REST, Monitoring, Logging, Debugging 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Fullstack Engineer to join a team that is expanding its genomic data science capabilities to explore data from multiple sources. The goal is to gain insights into the genomic drivers of common diseases and support the identification of novel therapeutic targets. We offer a B2B contract: 140 – 160 PLN net/hour + VAT You might be the perfect match if you are/have: ✅ Technical skills: Expertise in TypeScript (JavaScript) - React & Node.js; Expertise in Python (& FastAPI); Experience building and deploying secure and scalable apps in AWS (e.g., AWS CDK, ECS, ALB, EC2); Strong understanding of containerisation (+ deployment) - Docker ; Experience designing and securing APIs ; Experience with LangGraph and/or building agentic AI systems ; Strong knowledge of databases – SQL (PostgreSQL or similar) and NoSQL ; Experience logging, monitoring, and debugging production systems; Ability to work in Unix/Linux environments and with Bash scripting. ✅ Soft skills and others: Robust software development best practices and documentation; Proactive and self-driven, able to identify opportunities and suggest tasks rather than waiting for assignments; Strong team player , comfortable collaborating and contributing in group settings; Strong communication skills; Positive mindset and constructive approach to challenges; Initiative-taker who is not afraid to lead or push ideas forward and deliver in a fast-paced environment; Eager to learn, grow, and continuously develop new skills; Fluent English (C1) for effective collaboration in an international environment; Location in Poland (at least 5 years), enabling smooth cooperation and occasional in-person team meetings; Availability up to one month . Moreover, we appreciate skills in these areas: 5+ years of experience in a similar senior role; Strong product mindset; Familiarity with CI/CD pipelines; Familiarity with Domino Data Lab; AWS CloudFormation, CloudFormation, Lambda; Nginx; Other Python frameworks like Flask; Experience with testing frameworks/tools (e.g. Playwright, Jest); Interest in Life Sciences and Drug Discovery. By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: 1) You will be invited to an HR Screening with our IT Recruiter. 2) You will have a technical interview. 3) You will meet with a client. Submit your application online in one easy step! Apply now! You will earn: B2B: 140 – 160 PLN net/hour + VAT

🏢 Summary: B2B Fullstack Engineer role focused on building and scaling secure applications to support genomic data science and AI-driven insights for disease research. The position involves developing React/Node.js and Python (FastAPI) solutions deployed on AWS, with strong emphasis on APIs, containerization, and production-grade systems. The project includes agentic AI systems and scalable cloud infrastructure. 🗂️ Requirements: Expertise in TypeScript and React, Expertise in Node.js, Expertise in Python and FastAPI, Experience with AWS services (CDK, ECS, ALB, EC2), Experience with Docker and containerization, Experience designing and securing APIs, Experience with SQL and NoSQL databases, Experience with logging, monitoring, and debugging production systems, Ability to work in Unix/Linux environments, Bash scripting skills, Experience with LangGraph or agentic AI systems, Fluent English (C1), Location in Poland 📃 Skills: TypeScript, JavaScript, React, Node.js, Python, FastAPI, AWS, CDK, ECS, ALB, EC2, Docker, SQL, PostgreSQL, NoSQL, Unix, Linux, Bash, LangGraph, CI/CD, CloudFormation, Lambda, Nginx, Flask, Playwright, Jest 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers.If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Fullstack Engineer to join a team that is expanding its genomic data science capabilities to explore data from multiple sources. The goal is to gain insights into the genomic drivers of common diseases and support the identification of novel therapeutic targets. We offer a B2B contract: 140 – 160 PLN net/hour + VAT You might be the perfect match if you are/have: ✅ Technical skills: Expertise in TypeScript (JavaScript) - React & Node.js; Expertise in Python (& FastAPI); Experience building and deploying secure and scalable apps in AWS (e.g., AWS CDK, ECS, ALB, EC2); Strong understanding of containerisation (+ deployment) - Docker ; Experience designing and securing APIs ; Experience with LangGraph and/or building agentic AI systems ; Strong knowledge of databases – SQL (PostgreSQL or similar) and NoSQL ; Experience logging, monitoring, and debugging production systems; Ability to work in Unix/Linux environments and with Bash scripting. ✅ Soft skills and others: Robust software development best practices and documentation; Proactive and self-driven, able to identify opportunities and suggest tasks rather than waiting for assignments; Strong team player , comfortable collaborating and contributing in group settings; Strong communication skills; Positive mindset and constructive approach to challenges; Initiative-taker who is not afraid to lead or push ideas forward and deliver in a fast-paced environment; Eager to learn, grow, and continuously develop new skills; Fluent English (C1) for effective collaboration in an international environment; Location in Poland (at least 5 years), enabling smooth cooperation and occasional in-person team meetings; Availability up to one month . Moreover, we appreciate skills in these areas: 5+ years of experience in a similar senior role; Strong product mindset; Familiarity with CI/CD pipelines; Familiarity with Domino Data Lab; AWS CloudFormation, CloudFormation, Lambda; Nginx; Other Python frameworks like Flask; Experience with testing frameworks/tools (e.g. Playwright, Jest); Interest in Life Sciences and Drug Discovery. By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: 1) You will be invited to an HR Screening with our IT Recruiter. 2) You will have a technical interview. 3) You will meet with a client. Submit your application online in one easy step! Apply now!

🏢 Summary: The role involves end-to-end ownership of core Python services powering computational pathology and image analysis in Oncology R&D AI, with a focus on scalable microservice architecture. You will design, deploy, and operate distributed systems on Kubernetes and AWS, ensuring reliability, performance, and security. The position requires strong expertise in Python, Go, cloud infrastructure, and distributed systems. 🗂️ Requirements: Expert-level production experience with Python, Hands-on experience with Golang, Strong knowledge of microservices and distributed systems, Experience designing REST or gRPC APIs, Experience with SQL and NoSQL databases, Experience with Kubernetes in production, Strong Unix/Linux knowledge, Practical experience with AWS services (EKS, EC2, S3, RDS, IAM, CloudWatch), Experience with CI/CD and automated testing, Ability to design scalable and cost-efficient architectures 📃 Skills: Python, Golang, Kubernetes, AWS, EKS, EC2, S3, RDS, IAM, CloudWatch, SQL, NoSQL, REST, gRPC, Unix, Linux, CI/CD 🏢 Description: Holisticon Connect is a division within NEXER GROUP - a custom software development company. We started in Poland in 2017 and are now a team of over 140 people. We have the opportunity to work with world-renowned brands from Scandinavia, the UK, and Western Europe. Our goal is to grow stronger, in competence rather than in numbers. If you like what we do, check out our offer, maybe we will have the pleasure of meeting you! 😊 We are looking for a Software Engineer (Python, Go, Kubernetes). You will take end-to-end ownership of core Python services that power computational pathology and image analysis within Oncology R&D AI , keeping them robust, scalable, and well maintained. You’ll help shape our microservice architecture by defining clear service boundaries and interfaces, guiding key design decisions, and driving improvements in reliability and performance across the platform. You might be the perfect match if you are/have: Expert-level production experience with Python and solid hands-on experience with Golang for building and operating services. Deep understanding of microservices, distributed systems, and API design ( REST/gRPC ), with a focus on clean contracts and handling failure modes. Practical experience with SQL and NoSQL databases, including schema design, performance tuning, and familiarity with object storage solutions (e.g., S3). Proven experience deploying and operating services on Kubernetes , along with strong Unix/Linux fundamentals. Practical knowledge of key AWS services (EKS, EC2, S3, RDS, IAM, CloudWatch) and the ability to design cost‑efficient architectures. Strong engineering practices, including CI/CD, automated testing, code reviews, documentation, and a security-first mindset. Ability to lead technical initiatives, clearly communicate trade-offs, and collaborate effectively across multidisciplinary teams. Great to have experience with ML training/inference frameworks, e.g. PyTorch. Moreover, we appreciate skills in these areas: Experience with ML/AI tooling such as Kubeflow, MLflow, Feast, Argo, Airflow, Ray , and model versioning/monitoring solutions. Experience with large-scale image processing or digital pathology data (e.g., whole‑slide images) using libraries such as OpenSlide , scikit-image, or OpenCV . Experience with performance engineering, including concurrency, memory profiling, high‑throughput data pipelines, and GPU/accelerator integration. Experience working in regulated environments (e.g., GxP), including data governance, privacy requirements, and developing software under regulated processes. Experience with JavaScript/TypeScript for building internal tools and dashboards. Experience with event‑driven architectures and streaming platforms (e.g., Kafka ). By joining us, you gain the following: Opportunity to work on exciting, international projects in cutting-edge industries like Automotive, Biotech, IoT; Possibility to develop in cloud technologies; Becoming part of a team that believes that the next step to a promising future is to put your heart into it and make it happen; Respect for your private life so you don't have to work overtime or on weekends; Team Events budget to socialize outside of work; Company Events to celebrate smaller and bigger successes (Summer Party, Programmer's Day, and trips abroad – so far we've been in South Africa, Are, and Barcelona). Perks and benefits: Fully remote work or in our office in Wrocław; Benefits such as Luxmed , Multisport , and life insurance in Nationale Nederlanden ; Attractive referral system (9,5k for senior, 6k for mid, 2,5k for junior); Personal Training Budget with additional paid hours; Passion Day - an extra day off for your hobby to spend as you please; Flexible working hours with no micro-management approach. Our core hours are 9-15, the rest of the working time is up to you; We provide high-quality work equipment + 2 additional monitors and accessories. If you apply for this position and match our expectations, then: You will be invited for an HR screening to get to know your experience, expectations, and motivation; You will complete a coding test (HackerRank) to demonstrate your technical skills; You will be invited for a technical interview (~60 minutes) to discuss your approach, problem-solving, and frontend expertise in more depth; You will meet the team members to learn more about the project and see how we collaborate on a daily basis. Submit your application online in one easy step! Apply now!