Senior DevOps Engineer

🏢 Summary: Senior Fullstack Engineer role in an AI-driven project focused on building an end-to-end AutoML pipeline to resolve data fragmentation and enrich datasets. The position involves developing an admin dashboard and backend services to monitor, control, and scale AI models and data pipelines. The engineer will ensure system reliability, observability, and seamless integration of ML outputs in a cloud-based environment. 🗂️ Requirements: 5+ years experience as Fullstack Engineer, Strong frontend experience with React, Vue, or Angular, Strong backend experience with Node.js or Python (FastAPI, Flask, or Django), Experience building analytical dashboards or data-heavy UIs, Understanding of microservices, APIs, distributed systems, Experience with cloud platforms (Azure, AWS, or GCP), Familiarity with authentication, logging, monitoring systems, Experience implementing testing and clean code practices, English communication skills, Location in Poland or EU 📃 Skills: React, Vue, Angular, Node.js, Python, FastAPI, Flask, Django, Azure, AWS, GCP, Microservices, APIs, DistributedSystems, Authentication, Logging, Monitoring, AutoML 🏢 Description: Holisticon Insight is a data-focused technology and consulting company, part of the Nexer Group. Our mission is simple: We make companies Data Driven. We help organizations turn data into real business value. We design and build modern data platforms, business intelligence solutions, and AI systems that help companies make better decisions, improve operations, and create new digital services. Our expertise covers the whole data journey - from collecting and integrating data, through analytics and visualization, to advanced AI and machine learning. We achieve this by combining our expertise in building data platforms and IoT platforms, using business intelligence, and applying artificial intelligence and machine learning to enable more advanced analytics. At Holisticon Insight we focus on strong competencies, collaboration, and delivering real outcomes for our customers. We keep a family-like culture with flat structure and empowered teams where every voice counts. Check us out! 👉 https://holisticon.pl/holisticon-insight/ We offer a B2B Contract: 140 – 175 PLN net/hour + VAT We are looking for a Senior Fullstack Engineer to join a cutting-edge AI initiative of our client. The project focuses on resolving data fragmentation and incompleteness by building an end-to-end AutoML pipeline that identifies missing data, trains predictive models, and automatically enriches datasets. As a Fullstack Engineer, you will play a key role in making this AI system accessible, observable, and controllable at scale . Your responsibilities: Build and develop an admin dashboard to monitor pipeline health and model performance Design intuitive data-heavy UI views with drill-down capabilities Develop tools for manual and scheduled execution of training pipelines Implement system controls , including model overrides and blacklisting Build and maintain backend services for: user permissions access logs auditing and error handling Integrate inference outputs and enable automated data write-backs Collaborate closely with Data Engineers, ML Engineers, and DevOps Ensure high standards in code quality, testing, and system reliability You might be the perfect match if you possess the following competencies: 5+ years of prior experience as a Fullstack Engineer Strong experience with: Frontend: React, Vue, or Angular (React preferred) Backend: Node.js or Python (FastAPI, Flask, or Django) Experience building analytical dashboards or data-heavy UIs Understanding of modern software architecture (microservices, APIs, distributed systems) Experience working with cloud platforms (Azure, AWS, or GCP) Familiarity with authentication, logging, and monitoring systems Strong focus on clean code, testing, and best practices Excellent English communication skills Location in Poland or EU 🙌 Nice to have: Experience working with ML pipelines or AI platforms Background in data platforms or AutoML systems Experience with workflow orchestration tools By joining Holisticon Insight you will get: Life insurance Multisport card Fully remote job Private medical care Flexible working hours B2B or contract of employment Amazing integration events on a regular basis Training budget (e.g. Microsoft Azure Certifications) Opportunity to impact our company culture build-up Work equipment (laptop, 2 monitors, and accessories)

🏢 Summary: Senior Mobile Engineer role for a 1-year project with a US-based home appliance manufacturer, focused on developing and maintaining Flutter-based mobile applications integrated with cloud and AI services. The position covers full application lifecycle, from design and development to testing, release, and support, within a data-driven environment. Fully remote B2B engagement with high ownership and collaboration in a client team. 🗂️ Requirements: 6+ years of mobile development experience, Strong commercial experience with Flutter, Experience with Flutter Flow, Experience with GCP Cloud and GCP Services, Experience with Okta integration, Experience with Google AI services, Ability to write unit and UI tests, Experience in performance optimization and debugging, Bachelor’s Degree, Fluent English, Location in Poland or EU 📃 Skills: Flutter, FlutterFlow, GCP, Okta, GoogleAI, Dart, UnitTesting, UITesting, CI/CD, REST 🏢 Description: Holisticon Insight is a data-focused technology and consulting company, part of the Nexer Group. Our mission is simple: We make companies Data Driven. We build data platforms and data-intensive systems that solve real business problems. We work end-to-end, from integrating data from multiple sources (including IoT and operational systems), through building scalable data pipelines and semantic layers, to delivering analytics and AI solutions used in production. Our projects often combine data engineering, cloud, and software development. We don’t just process data - we also build systems that generate it, such as IoT and digital platforms, which later become part of the data ecosystem. You’ll work on real use cases – optimizing processes, enabling better decisions, and building data products used by business teams. We focus on clean architecture, modern tech stacks, and ownership of what we build. At Holisticon Insight we value strong engineering skills, autonomy, and collaboration. We keep a flat structure, small teams, and a lot of responsibility on the engineer level. Check us out! 👉 https://holisticon.pl/holisticon-insight/ We offer B2B Contract B2B: 140 – 180 PLN net/hour + VAT 🚀 We are looking for an Senior Mobile Engineer to work on a project - 1 year long assignment❗-  in a team of our client,  US-based home appliance manufacturer. In this role you will: Support the entire application lifecycle (concept, design, test, release and support). Produce fully functional mobile applications writing clean code. Gather specific requirements and suggest solutions. Write unit and UI tests to identify malfunctions. Troubleshoot and debug to optimize performance. Design interfaces to improve user experience. Liaise with Product development team to plan new features Ensure new and legacy applications meet quality standards. Research and suggest new mobile products, applications and protocols Stay up-to-date with new technology trends. You might be the perfect match if you possess the following competencies: 6+ years of experience in mobile (flutter development) Expertise in the following tech stack: Flutter Flow, GCP Cloud, GCP Services, Okta Integration, Google AI service Location in Poland (or EU) Excellent English communication skills Strong interpersonal skills Education: Bachelor's Degree Experience working in IT consulting - nice to have By joining Holisticon Insight you will get: Life insurance Multisport card Fully remote job Private medical care Flexible working hours B2B or contract of employment Amazing integration events on a regular basis Training budget (e.g. Microsoft Azure Certifications) Opportunity to impact our company culture build-up Work equipment (laptop, 2 monitors, and accessories)

🏢 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: 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: Lead Platform Engineer responsible for designing and operating a cloud-native ML platform for large-scale medical imaging workflows. The role focuses on building secure, scalable infrastructure on AWS and Kubernetes, enabling efficient model development, training, and deployment. You will drive MLOps standards, infrastructure-as-code, CI/CD, and platform reliability. 🗂️ Requirements: Minimum 5 years experience in Platform Engineering or DevOps, Production experience with Kubernetes (EKS/GKE/AKS), Hands-on experience with Kubeflow Pipelines or similar ML workflow tools, Strong experience with AWS services (EKS, EC2, S3, IAM, CloudWatch), Experience with Infrastructure as Code using Terraform, Experience with CI/CD pipelines and Git-based workflows, Proficiency in Python or shell scripting, Experience implementing observability (logging, metrics, tracing), Strong Linux/Unix knowledge, Understanding of cloud security, access control, and secrets management 📃 Skills: AWS, Kubernetes, EKS, EC2, S3, IAM, CloudWatch, Kubeflow, Terraform, Git, CI/CD, GitHub, GitLab, Jenkins, Python, Bash, Prometheus, Grafana, Linux, MLflow, Argo, Airflow, Ray, SQL, NoSQL 🏢 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 Lead Platform Engineer (Cloud & MLOps) who will take ownership of designing and evolving a cloud-native platform supporting large-scale machine learning workflows in the medical imaging domain. In this role, you will shape and operate scalable, secure, and production-grade infrastructure across AWS and Kubernetes, enabling teams to efficiently develop, train, and deploy ML models. You will play a key role in building and optimizing ML platforms and pipelines (e.g. Kubeflow) , driving infrastructure-as-code, CI/CD, and automation standards. Working closely with product engineers, data scientists, and imaging teams, you will translate complex scientific requirements into robust, reliable systems at scale . This is a highly impactful position with strong ownership over platform architecture, developer experience, and system reliability . 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 Y ou might be the perfect match if you are/have: At least 5 years of professional experience in Platform Engineering, DevOps, or similar roles; Hands-on, production experience with Kubernetes (EKS/GKE/AKS), including upgrades, autoscaling, networking, RBAC, and reliability; Practical experience building and operating Kubeflow Pipelines (or similar) for scalable and reproducible ML workflows; Strong experience with AWS services (EKS, EC2, S3, IAM, CloudWatch) and can design secure and cost-efficient architectures; Strong skills in Infrastructure as Code (Terraform) and Git-based workflows; Experience with CI/CD pipelines (e.g. GitHub Actions, GitLab CI, Jenkins), including artifact management and environment promotion; Solid Python and/or shell scripting skills for automation and platform tooling; Have experience implementing observability (logging, metrics, tracing) with tools like Prometheus, Grafana, or CloudWatch; Apply a security-first mindset and understand best practices in access control, secrets management, and infrastructure security; Have strong Linux/Unix fundamentals; Are able to lead technical initiatives , communicate trade-offs clearly, and collaborate effectively with engineering and data teams. Moreover, we appreciate skills in these areas: Experience with ML platform tooling (e.g. MLflow, Feast, Argo, Airflow, Ray) and model versioning/monitoring; Familiarity with large-scale data processing , especially image data (e.g. digital pathology, whole-slide images); Experience with high-performance pipelines , including tuning concurrency, memory usage, and GPU/accelerator integration; Knowledge of networking and cloud architecture (VPC design, ingress/egress, service mesh, IAM, policy as code); Experience with object storage and artifact management (e.g. S3, registries); Exposure to SQL/NoSQL databases; Experience working in a regulated environment (e.g. healthcare, pharma, GxP); Basic knowledge of JavaScript/TypeScript for internal tools or dashboards. 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: 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: 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: 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: 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: Full-stack Developer role in an international, product-driven team building a global, data-intensive platform using modern web technologies. The position focuses on active product development, new features, and architectural decisions within a collaborative Agile environment. Requires daily overlap with US time zones and offers competitive B2B compensation. 🗂️ Requirements: 5+ years experience as Fullstack Developer, Strong Python experience, Experience with Django or Flask, Strong React experience, Understanding of REST APIs, Knowledge of web application architecture, Experience with relational databases, Experience with PostgreSQL, Familiarity with Docker, Experience with CI/CD, Very good English, Availability for US time zone overlap (12:00–18:00 CET) 📃 Skills: Python, Django, Flask, React, REST, PostgreSQL, SQL, Docker, CI/CD, AWS, ECS, ECR, S3, TypeScript, Agile, 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. 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 Full-stack Developer , who will join an international product-driven team working on a cutting-edge platform combining advanced data, scalable systems, and modern web technologies. The product supports complex decision-making processes and operates at a global scale. The team works in a highly collaborative environment with engineers and stakeholders based in the US and Europe. This is not a maintenance project – it’s active product development with real ownership and engineering influence. Because of the distributed setup, daily overlap with US time zones (12:00–18:00 CET) is required. We offer a competitive renumeration: B2B: 140 – 160 PLN net/hour + VAT Your responsibilities: Designing and developing fullstack web applications (backend + frontend); Building new features and improving existing functionalities; Writing clean, scalable, and testable code; Collaborating closely with Product, Design, and other Engineers; Participating in code reviews and technical discussions; Contributing to architecture decisions and continuous improvements; Working in an Agile/Scrum environment. You might be the perfect match if you are/have: 5+ years of experience as a Fullstack Developer; Strong experience with Python (Django or Flask preferred); Solid frontend experience with React; Good understanding of REST APIs and web application architecture; Experience with relational databases (PostgreSQL preferred); Familiarity with Docker and CI/CD practices; Very good English (daily communication with international team); Availability to work with required US overlap (12:00–18:00 CET). Moreover, we appreciate skills in these areas: Experience with AWS (ECS, ECR, S3 or similar services); Knowledge of TypeScript; Experience working in product-oriented teams; Exposure to data-heavy or performance-sensitive systems. 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