(Senior) Java Developer - Freelance

🏢 Summary: Senior Backend Engineer role (B2B, remote within EU) focused on designing scalable backend systems, high-performance APIs, and ETL pipelines for large-scale data processing in distributed environments. The position involves optimizing system performance, database structures, and cloud-based architectures while ensuring security, reliability, and maintainability. The offer includes long-term collaboration on complex digital products with flexible remote work and paid vacation. 🗂️ Requirements: Strong commercial experience with JVM languages (Java, Scala, or Kotlin), Experience with relational databases (PostgreSQL, MySQL), Experience with NoSQL databases (MongoDB), Hands-on experience with large datasets processing, Knowledge of scalable API design and backend architecture, Experience designing distributed, high-performance systems, Experience building ETL pipelines, Experience with cloud platforms (AWS, GCP, or Azure), Knowledge of performance optimization and low-latency systems, Experience with database optimization (indexing, schema design, tuning), Senior-level experience with mentoring capabilities, English C1 level, Must be based in the European Union 📃 Skills: Java, Scala, Kotlin, JVM, PostgreSQL, MySQL, MongoDB, ETL, AWS, GCP, Azure, SQL, NoSQL, CI, CD 🏢 Description: Description Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. Position: Senior Backend Engineer Contract: B2B – Remote (EU Only) Rate: up to 30 EUR/hour + 20 paid vacation days Language: English C1 Responsibilities Design and build scalable backend systems for processing large volumes of data Develop and maintain robust, high-performance APIs for data integration and access Build, optimize, and maintain ETL pipelines for data ingestion and transformation Process and manage large datasets in distributed environments Optimize system performance, latency, and throughput across backend services Improve database performance through indexing, schema design, and query optimization Collaborate with product managers, designers, and engineering teams to deliver scalable solutions Work closely with stakeholders to define and implement data-driven functionalities Ensure high standards of security, reliability, scalability, and maintainability Mentor and support other engineers as part of a senior-level engineering role Stay up to date with modern backend technologies, architecture patterns, and engineering best practices Requirements Strong commercial experience with JVM-based languages such as Java, Scala, or Kotlin Solid experience with relational databases, including PostgreSQL and MySQL Experience working with NoSQL databases, preferably MongoDB Hands-on experience processing and managing large datasets Strong knowledge of scalable API design and backend architecture principles Experience designing distributed and high-performance systems Practical experience building ETL pipelines using standard data processing tools Experience with cloud platforms such as AWS, GCP, or Azure Strong understanding of performance optimization and low-latency systems Experience with database optimization, including indexing, schema design, and performance tuning Strong problem-solving and communication skills Senior-level mindset with the ability to mentor and support engineering teams English at C1 level Must be based in the European Union Benefits In return, we offer: 100% remote, flexible work; work with an experienced team of developers and continuous development of your hard and soft skills; dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes; long-term collaboration on challenging products (FinTech, B2B software, E-commerce and more). What will happen next? We would like to know you better, so we will invite you for a meeting with our recruiter. Next, you'll be asked to solve the task or invited to an interview and pair programming with one of our iOS Developers. Looking for a full-time job? Check out our and find out more about our open recruitment processes. If you need any disability-related adaptation at any step of the recruitment process – simply let the recruiter know! We'd be happy to help.

🏢 Summary: Senior Backend Engineer role for a long-term freelance project in the laboratory and biotech domain, working as the sole backend developer to modernize and scale legacy systems. The position focuses on backend architecture, microservices development, and integration with LIMS systems in an on-premise Kubernetes environment. The role requires close technical collaboration with laboratory stakeholders and internal teams. 🗂️ Requirements: Senior-level experience with Java, Strong architectural and problem-solving skills, Experience with Spring and Spring Boot, Experience designing and maintaining REST APIs, Knowledge of SOAP services, Experience in microservices environments, Practical experience with Kubernetes, Experience integrating LIMS systems, Experience with refactoring and legacy code modernization, Ability to work independently as sole backend engineer, EU-based residency, English C1 level 📃 Skills: Java, Spring, SpringBoot, REST, SOAP, Microservices, Kubernetes, LIMS, Architecture, Refactoring, Integration 🏢 Description: Description Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. We are looking for a Senior Backend Engineer with strong architectural skills to join a long-term project for a European client in the laboratory and biotech domain. This is a single-developer project , where you will work closely with the client's internal teams and laboratory stakeholders to clarify requirements, define scope, and improve existing backend processes. Strong communication skills are essential, as you will regularly attend technical discussions with LIMS and laboratory teams. The role involves hands-on development, refactoring legacy code, and contributing to a scalable and well-structured backend architecture. You must be based in the EU due to client requirements. Position: Senior Backend Engineer (Java / Architecture) Contract: Freelance / B2B – Remote (EU Only) Rate: 36–50 EUR/hour Language: English C1 Responsibilities Work independently as the sole backend engineer on the project Refactor and modernize legacy backend systems Improve and extend existing microservices and backend integrations Maintain and develop REST and SOAP interfaces Communicate with laboratory teams and LIMS stakeholders to define requirements Ensure stable operation of backend services in an on-premise Kubernetes environment Collaborate with internal client teams to maintain architectural consistency Requirements Tech stack & requirements Senior-level experience with Java (Spring / Spring Boot) Strong architectural and problem-solving skills Experience designing and maintaining REST APIs Knowledge of SOAP services Background in microservices environments Practical experience with Kubernetes (on-premise setups preferred) Experience working with or integrating LIMS systems Solid understanding of refactoring and legacy code modernization Excellent communication skills for direct cooperation with laboratory stakeholders English at C1 level Must be based in the European Union Benefits In return, we offer: 100% remote, flexible work; work with an experienced team of developers and continuous development of your hard and soft skills; dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes; long-term collaboration on challenging products (FinTech, B2B software, E-commerce and more). What will happen next? We would like to know you better, so we will invite you for a meeting with our recruiter. Next, you'll be asked to solve the task or invited to an interview and pair programming with one of our iOS Developers. Looking for a full-time job? Check out our and find out more about our open recruitment processes. If you need any disability-related adaptation at any step of the recruitment process – simply let the recruiter know! We'd be happy to help.

🏢 Summary: Offer for a Backend Kotlin Engineer to work full-time on a long-term remote project within CET hours, building backend solutions in event-driven architectures. The role involves developing and maintaining Kotlin-based services, collaborating with DevOps, and working in CI/CD-driven environments. The project duration is at least 6 months with potential for extended collaboration. 🗂️ Requirements: Good command of written and spoken English, Location within European Union, Commercial experience with Kotlin, Experience with Kubernetes, Experience with event-driven architectures, Experience with Kafka, Experience with CI/CD for backend and mobile applications, Experience in DevOps collaboration, Understanding of certification and compliance processes 📃 Skills: Kotlin, Kubernetes, Kafka, CI/CD, DevOps, English 🏢 Description: Description Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. How freelancing works at Netguru? As a , you can choose what works well for you. You decide when, where, and how you work on projects and tasks. We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills. But there's more. Netguru freelancers can benefit from full-time collaboration and really be a part of the team. So, are you ready to make an impact? Join Netguru, and let's build beautiful software together. Currently we are looking for a Backend Kotlin Engineer Salary range (Regular): from 70 PLN/h Engagement: fulltime Working Hours: CET Start date: around mid July 2026 Project duration: minimum 6 months Requirements Good command of written and spoken English. Located in European Union Kotlin Kubernetes Event-driven systems (Kafka) CI/CD for mobile and backend applications DevOps collaboration Certification and compliance processes Benefits In return, we offer: 100% remote, flexible work. Work with an experienced team of developers and continuous development of your hard and soft skills. Dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes. Long-term collaboration on challenging products (FinTech, B2B software, E-commerce and more). Here's what you can expect from the recruitment process: First, you'll meet with one of our recruiters to get to know each other better. If everything goes well, you'll have the opportunity to meet with the client during online interviews. Don't hesitate and apply right away! At Netguru, we're committed to creating an inclusive environment for everyone. If you require any disability-related adaptations during the recruitment process, please let us know. We're here to help!

🏢 Summary: Full-time remote Software Engineer role focused on building and optimizing advanced search solutions within a data-intensive product. The position involves designing scalable search algorithms, improving relevance and performance, and collaborating closely with product teams in a multi-stakeholder environment. B2B contract up to 38€/h for EU-based candidates. 🗂️ Requirements: EU residency, Availability for full-time (40h/week) B2B contract, Strong backend engineering experience, Proficiency in Kotlin, Experience with Go or Python, Experience with Solr, ElasticSearch or similar search technologies, Experience with data-intensive systems, Experience in multi-stakeholder environments 📃 Skills: Kotlin, Go, Python, Solr, ElasticSearch, CI, CD 🏢 Description: Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. How freelancing works at Netguru? As a , you can choose what works well for you. You decide when, where, and how you work on projects and tasks. We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills. But there's more. Netguru freelancers can benefit from full-time collaboration and really be a part of the team. So, are you ready to make an impact? Join Netguru, and let's build beautiful software together. Rate: up to 38€/h (b2b contract only) Start date: 31/01/2026 End date: 25/01/2027 Full-time (40h/week) European Union based candidates only - our client's requirement due to internal policies and legal restrictions. Strong backend engineering skills with experience with client’s tech stack (Kotlin preferred, Go/Python valuable), nice to have: previous experience in Search/Ranking domains, particularly with Solr, ElasticSearch, or any related search technologies We are seeking a highly skilled and motivated Software Engineer to join our Client's talented Search team. As a key member of their technology division, you will play a crucial role in designing, implementing, and optimizing their search algorithms to enhance the user experience and ensure the accuracy and relevance of search results. In addition, we are looking for an individual with demonstrated experience in working with multi-stakeholder environments and handling high-demanding, data-intensive products. Your responsibilities will include: Playing an integral role within a dynamic team, solidifying your and your team's technical prowess to establish credibility Fostering a culture of innovation, actively encouraging the conception, creation, implementation, and deployment of sophisticated scalable solutions Posing thoughtful questions, participating in brainstorming sessions, and taking ownership of the product development process to foster a collaborative environment Experimenting with novel machine learning approaches to push the boundaries of search capabilities Collaborating closely with the product management team, ensuring alignment to construct the optimal product that resonates with and benefits our users Identifying and addressing performance bottlenecks through meticulous profiling, monitoring, and optimization of the search infrastructure for high-speed and low-latency responses Spearheading initiatives to enhance search quality through continuous refinement of query understanding mechanisms, and relevance models Requirements Demonstrated proficiency in Kotlin, showcasing a strong understanding of its core principles and capabilities. This includes the ability to write clean, efficient, and maintainable code while effectively utilizing Kotlin's features. Expertise in Go or Python, showcasing a deep comprehension of programming paradigms along with the skill to produce clean, efficient, and maintainable code in these widely-used languages. Experience with Solr, ElasticSearch, or similar search technologies that empower powerful indexing and searching capabilities, allowing you to create robust search functionalities within our applications. Benefits In return, we offer: 100-percent remote work; huge flexibility and variety of project to choose from - work the way you like; work with an experienced team of developers and continuous development of your hard and soft skills; a mentor who will assist you during your first days; dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes; long-term collaboration on challenging products (FinTech, B2B software, E-commerce and more).

🏢 Summary: Full-time Senior Frontend Developer role focused on building and maintaining complex React applications within large production codebases. The project involves working with TypeScript, GraphQL APIs, and design systems, with strong emphasis on architecture, performance, and E2E testing. The position also requires effective use of AI coding tools to accelerate development. 🗂️ Requirements: Strong experience with TypeScript, Deep experience with React in complex applications, Experience with GraphQL APIs, Experience working with design systems, Strong knowledge of component architecture, Strong knowledge of state management, Strong knowledge of performance optimization, Experience writing and maintaining E2E tests, Experience working on large production codebases, Hands-on experience with AI coding tools 📃 Skills: TypeScript, React, GraphQL, E2E, AI, Copilot, Claude, CI, CD, Microfrontends, Accessibility, FeatureFlags, Performance, StateManagement, ComponentArchitecture, DesignSystems 🏢 Description: Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. How freelancing works at Netguru? As a , you can choose what works well for you. You decide when, where, and how you work on projects and tasks. We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills. But there's more. Netguru freelancers can benefit from full-time collaboration and really be a part of the team. So, are you ready to make an impact? Join Netguru, and let's build beautiful software together. Currently we are looking for a Senior Frontend Developer. Salary range: 34€/h Engagement: fulltime Working Hours: CET Start date: asap Project duration: 1 year Requirements Apply if you have/are: Currently located in European Union. Good command of written and spoken English. Strong hands-on experience with TypeScript. Deep experience with React (complex applications, not only small components). Experience working with GraphQL APIs. Experience contributing to or working within a design system. Strong understanding of: Component architecture. State management. Performance optimization. Experience writing and maintaining end-to-end tests (E2E). Experience working on large, existing production codebases. Hands-on experience using of AI coding tools. Are comfortable using AI coding agents (e.g., Copilot, Claude, similar tools). Use AI effectively to accelerate implementation. Nice to have: Experience building or evolving large-scale design systems. Experience improving frontend performance at scale. Familiarity with accessibility (a11y) best practices. Experience with: Micro-frontend architectures. Feature flagging systems. AI-assisted UX or chat-based interfaces. Benefits In return, we offer: 100% remote, flexible work. Work with an experienced team of developers and continuous development of your hard and soft skills. Dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes. Long-term collaboration on challenging products (FinTech, B2B software, E-commerce and more). Here's what you can expect from the recruitment process: First, you'll meet with one of our recruiters to get to know each other better. Then, you'll participate in a pair programming session with one of our tech experts. If everything goes well, you'll have the opportunity to meet with the client during online interviews. Don't hesitate and apply right away! At Netguru, we're committed to creating an inclusive environment for everyone. If you require any disability-related adaptations during the recruitment process, please let us know. We're here to help!

🏢 Summary: Full-time Senior DevOps Engineer role for a minimum 6-month project, focused on building and maintaining modern cloud-native infrastructure in a remote, EU-based setup. The position involves working with GitOps practices, Kubernetes environments, and observability stacks within experienced engineering teams. 🗂️ Requirements: Minimum 5 years of DevOps experience, Strong knowledge of ArgoCD and GitOps, Experience with Kubernetes and Rancher, Experience with PostgreSQL and Kafka, Experience with OpenTelemetry, Grafana, and ELK, Good command of written and spoken English, Located in the European Union 📃 Skills: ArgoCD, GitOps, Kubernetes, Rancher, PostgreSQL, Kafka, OpenTelemetry, Grafana, ELK 🏢 Description: Description Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. How freelancing works at Netguru? As a , you can choose what works well for you. You decide when, where, and how you work on projects and tasks. We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills. But there's more. Netguru freelancers can benefit from full-time collaboration and really be a part of the team. So, are you ready to make an impact? Join Netguru, and let's build beautiful software together. Currently we are looking for a Senior DevOps Engineer Salary range (Regular): from 110 PLN/h Engagement: fulltime Working Hours: CET Start date: around mid July 2026 Project duration: minimum 6 months Requirements Good command of written and spoken English. Located in European Union Min. 5 years of experience ArgoCD (GitOps) Kubernetes (Rancher) PostgreSQL, Kafka OpenTelemetry, Grafana, ELK Nice to have: Experience in medtech. Benefits In return, we offer: 100% remote, flexible work. Work with an experienced team of developers and continuous development of your hard and soft skills. Dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes. Long-term collaboration on challenging products (FinTech, B2B software, E-commerce and more). Here's what you can expect from the recruitment process: First, you'll meet with one of our recruiters to get to know each other better. If everything goes well, you'll have the opportunity to meet with the client during online interviews. Don't hesitate and apply right away! At Netguru, we're committed to creating an inclusive environment for everyone. If you require any disability-related adaptations during the recruitment process, please let us know. We're here to help! Netguru collects and processes personal data in accordance with applicable data protection laws. If you are a European Job Applicant see the privacy notice for further details. View website View all jobs Help Accessibility Powered by Workable

🏢 Summary: Senior Frontend Tech Lead role focused on defining technical vision, making architectural decisions, and leading frontend projects built primarily with React. The position combines hands-on frontend expertise with system design, cross-functional collaboration, and technical leadership. The role also involves mentoring developers, supporting presales, and driving engineering excellence across projects. 🗂️ Requirements: 6+ years frontend development experience, Strong expertise in React, Solid frontend system design and architecture knowledge, Experience with at least one additional frontend technology (React Native, Angular, Flutter, or native mobile), Experience in at least one additional area: Node.js or Python backend, Machine Learning/AI, or DevOps with CI/CD and cloud (Azure or AWS), Experience managing technical debt and enforcing coding standards, Experience in technical leadership and mentoring developers 📃 Skills: React, Frontend, Architecture, ReactNative, Angular, Flutter, Node.js, Python, MachineLearning, AI, DevOps, CICD, Azure, AWS, Strapi, Medusa, Saleor, Storybook 🏢 Description: Description Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. Salary ranges: PLN 14 000 - 23 500 monthly gross (Contract of employment). PLN 16 800 - 28 200 monthly before tax (Long-term contract (B2B)) + 20 paid days off. Tasks & Responsibilities: Define and maintain the technical vision for assigned projects and stack practice. Make architectural and technology stack decisions aligned with long-term strategy. Enforce coding standards, best practices, and engineering excellence. Manage technical debt – identify, prioritise, and oversee resolution. People Management of up to 12 people. Provide direct line management for developers: 1:1s, performance reviews, career planning, salary input. Mentor developers through code reviews, pair programming, and knowledge-sharing initiatives. Participate in recruitment and ensure effective onboarding for new hires. Support presales processes with technical expertise, including high-level designs, architecture proposals, and highlighting potential risks and challenges. Decompose business requirements into technical deliverables and support accurate estimations. Promote innovation by monitoring trends and recommending relevant solutions. Contribute to department-wide discussions on technologies and ways of working, providing input on efficiency, optimization, and best practices. Strengthen client trust and satisfaction (NPS) by ensuring high technical quality and timely delivery. Requirements 6+ years of hands-on experience in frontend development, with strong expertise in React Solid knowledge of frontend system design and architecture Experience with additional frontend technologies (e.g. React Native, Angular, Flutter, or native mobile development) Proven experience in at least ONE additional technical area: Backend development (Node.js or Python), Machine Learning / AI, DevOps (CI/CD pipelines, Azure or AWS) Previous people leadership experience, including coaching, providing feedback, and conflict resolution Strong communication skills, able to work effectively with both technical and business stakeholders Demonstrated decision-making ability and proactive problem-solving mindset Ability to balance business constraints with technical excellence Excellent written and spoken English and Polish (C1+) Nice-to-have: Experience with headless architectures and related technologies, such as CMS (e.g. Strapi), e-commerce platforms (Medusa, Saleor), system design tools (Storybook), or modern storefront solutions Benefits Access to the WorkSmile platform offering benefits adapted to your preferences: Multisport card, Private health insurance package, Life insurance, And hundreds of other options to choose from 15 categories (shopping, leisure, travel, food, etc.). Discounts on Apple products (B2B in Poland) Performance Bonus . Various internal initiatives : webinars, knowledge-sharing sessions, . 20 paid days off .

🏢 Summary: Full-time freelance assignment for a (Senior) Fullstack Developer with Node.js to build and maintain scalable backend systems and APIs in a remote, EU-based setup. The role focuses on developing distributed, microservices-based applications using modern cloud and DevOps practices. The contract is for 3 months with possible extension, starting in July. 🗂️ Requirements: Strong proficiency in Node.js, Strong proficiency in TypeScript, Experience with REST APIs, Experience with WebSocket-based applications, Hands-on experience with Strapi, Hands-on experience with Medusa.js, Experience with message brokers, Experience with asynchronous architectures, Knowledge of SQL databases, Knowledge of NoSQL databases, Experience with microservices, Experience with distributed systems, Knowledge of system design, Knowledge of scalability and performance optimization, Proficiency with Git, Proficiency with Docker, Experience with CI/CD pipelines, Experience with AWS or Azure, Understanding of software architecture and design patterns, English level C1 📃 Skills: Node.js, TypeScript, REST, WebSockets, Strapi, Medusa.js, RabbitMQ, AMQP, Kafka, SQL, NoSQL, Microservices, Docker, Git, CI/CD, AWS, Azure 🏢 Description: Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. How freelancing works at Netguru? As a , you can choose what works well for you. You decide when, where, and how you work on projects and tasks. We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills. But there's more. Netguru freelancers can benefit from full-time collaboration and really be a part of the team. So, are you ready to make an impact? Join Netguru, and let's build beautiful software together. We are looking for a (Senior) Fullstack Developer with Node.js Freelance assignment : full-time, B2B contract. Start: July Duration: 3 months with the possibility of extension Working hours: CET Location: Remote (based in European Union) Salary brackets: €26-35/h Requirements Strong proficiency in Node.js and TypeScript. Experience building and maintaining REST APIs and WebSocket-based applications. Hands-on experience with Strapi and Medusa.js. Experience with message brokers and asynchronous architectures (RabbitMQ, AMQP, Kafka, etc.). Solid understanding of SQL and NoSQL databases. Experience with microservices and distributed systems. Knowledge of system design , scalability, and performance optimization. Proficiency with Git , Docker , and CI/CD pipelines. Experience with AWS , Azure or other cloud platforms. Strong understanding of software architecture, design patterns, and best practices. Strong problem-solving and communication skills. Written and spoken English at C1 level Benefits In return, we offer: Flexibility: 100% remote work. Professionality: dev-friendly processes, like Continuous Integration and Code Review, work in line with Agile methodology. Diversity: projects from various industries like fintech, healthcare, insurance, or education. Growth: work with a team of experts and continuous development of your hard and soft skills. Knowledge: knowledge sharing sessions, internal knowledge base. Curious to learn more about working as a Netguru freelancer? All the information you need is here: . Looking for a full-time job? Check out our  and find out more about our open recruitment processes. If you need any disability-related adaptation at any step of the recruitment process – simply let the recruiter know! We'd be happy to help. Don't hesitate and apply right away.

🏢 Summary: B2B contract for an experienced Python Developer to build and enhance scalable digital solutions using Django and AI integrations in a hybrid setup (Warsaw). The role focuses on delivering high-quality, maintainable code and collaborating with senior teams on advanced, technology-driven projects. Engagement from April to October 2026 with potential full-time collaboration. 🗂️ Requirements: Minimum 3 years of commercial coding experience, Strong knowledge of Python, Strong knowledge of Django, Experience with AI frameworks (OpenAI, LangChain) or FastAPI integrations, Experience with automated testing using Pytest, Ability to write clean, efficient, maintainable code, Polish language proficiency at C1 level, Good command of English 📃 Skills: Python, Django, OpenAI, LangChain, FastAPI, Pytest, Docker, Linux, Vue, Quasar, CICD 🏢 Description: Description Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. How freelancing works at Netguru? As a Netguru freelancer, you can choose what works well for you. You decide when, where, and how you work on projects and tasks. We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills. But there's more. Netguru freelancers can benefit from full-time collaboration and really be a part of the team. So, are you ready to make an impact? Join Netguru, and let's build beautiful software together. Location: preferably Warsaw, Poland Hybrid work - at least once per week from Client's office in Warsaw Contract: B2B Rate: up to 100 PLN/h (NET) Start date: 13/04/2026 End date: 09/10/2026 Must have: Polish C1 Requirements Min. 3 years of full-time coding experience Solid, hands-on knowledge of Python and Django Curiosity about or experience with AI frameworks (OpenAI, LangChain, FastAPI integrations). A knack for writing code that’s fast, clean, and built to last Comfortable testing with Pytest Good interpersonal and teamwork skills - BEASTs together strong Fluent Polish and good command of English NIce to have: Experience working with Vue JS and Quasar. Solid skills with Docker and Linux The ability to write clear, concise documentation that others will actually read. Knowledge of CI/CD practices and tools. Experience with performance optimization - because speed matters. Benefits Receive a monthly allowance for individual benefits, adjusted to your country and lifestyle. Use a dedicated yearly fund for learning, courses, or certifications. Join a team delivering high-impact digital solutions for internationally recognized clients. Contribute to advanced, technology-driven projects that shape modern industries. Take ownership — your role goes far beyond routine development tasks. Use your expertise to guide clients toward effective, scalable solutions. Enjoy a balanced pace of work — we value precision and thoughtful execution over speed. Collaborate daily with senior professionals and domain experts. Access multiple career development paths and growth opportunities.

🏢 Summary: Full-time remote Frontend Developer role focused on building and optimizing modern web applications using ClojureScript in a 6-month project. The position involves functional programming, advanced state management, and integration with external libraries in a collaborative, CI/CD-driven environment. The role requires strong frontend engineering skills and performance-oriented development. 🗂️ Requirements: Native Polish or Polish at least B2+, English at least B2, Experience with ClojureScript, Knowledge of functional programming principles, Experience with re-frame and Reagent, Experience with EDN and Transit formats, Experience with clojure.spec for data validation, Experience with JavaScript interop and NPM integration, Experience with shadow-cljs or Leiningen, Experience with REPL-driven development, Experience with React rendering performance optimization, Experience with automated testing using cljs.test 📃 Skills: ClojureScript, re-frame, Reagent, EDN, Transit, clojure.spec, JavaScript, NPM, shadow-cljs, Leiningen, REPL, React, cljs.test, CI, CD 🏢 Description: Description Netguru is a trusted partner in digital commerce. The company helps leading brands modernize B2B solutions, marketplaces, and retail ecosystems. Since 2008, it has empowered businesses with cutting-edge technology, AI-powered personalization, and world-class engineering and design teams. A certified B Corporation®, Netguru is trusted by major brands including IKEA, VW, OLX, Delivery Hero, Żabka, Wolt, Careem, and Vinted. How freelancing works at Netguru? As a , you can choose what works well for you. You decide when, where, and how you work on projects and tasks. We match you with work that fits your skills. Plus, you have access to various opportunities across different industries and companies. That means you will not only gain more experience, but also develop various skills. But there's more. Netguru freelancers can benefit from full-time collaboration and really be a part of the team. So, are you ready to make an impact? Join Netguru, and let's build beautiful software together. Currently we are looking for a Frontend Developer. Salary range: up to 35€/h Engagement: fulltime Working Hours: 9-17CET Start date: 12.06.2026 Project duration: 6 months Requirements Are native Polish-speaker or have a good command of written and spoken Polish (at least B2+). Have a good command of written and spoken English (at least B2). Core: ClojureScript and functional programming principles (immutability, pure functions). State Management: Proficient in re-frame (Events, Subscriptions, Co-effects) and Reagent. Data & API: Expertise in EDN and Transit formats; data validation using clojure.spec. Interop: Hands-on experience with JS Interop and seamless integration of external NPM libraries. Tooling: Skilled in shadow-cljs (or Leiningen) and REPL-driven development. Engineering: React rendering performance optimization and automated testing with cljs.test. Benefits In return, we offer: 100% remote, flexible work. Work with an experienced team of developers and continuous development of your hard and soft skills. Dev-friendly processes such as Continuous Integration, Continuous Delivery, Code Review and bug bashes. Long-term collaboration on challenging products (FinTech, B2B software, E-commerce and more). Here's what you can expect from the recruitment process: First, you'll meet with one of our recruiters to get to know each other better. If everything goes well, you'll have the opportunity to meet with the client during online interviews. Don't hesitate and apply right away! At Netguru, we're committed to creating an inclusive environment for everyone. If you require any disability-related adaptations during the recruitment process, please let us know. We're here to help!