Fullstack Consultant/Freelancer

🏢 Summary: Opportunity for experienced Fullstack Consultants to join a verified freelance network supporting diverse projects such as greenfield development, MVPs, modernization, and consulting engagements. Collaboration is flexible (short-term, part-time, full-time) and project-based, depending on business needs and availability. Consultants are expected to independently deliver end-to-end solutions and support clients in outcome-driven initiatives. 🗂️ Requirements: Experience delivering end-to-end backend and frontend solutions, Ability to design software architecture and drive implementation to production, Experience estimating scope, timelines and engagement level, Ability to independently structure implementation work, Experience collaborating with technical and business stakeholders, Focus on software quality and maintainability, Active practical use of AI tools 📃 Skills: Backend, Frontend, Architecture, Estimation, AI, Prototyping, MVP, Consulting, Modernization, Delivery 🏢 Description: We are building a verified network of experienced freelancers and consultants who can support our clients in flexible cooperation models: from short-term delivery acceleration and MVP initiatives to outcome-based consulting engagements. This is not a traditional recruitment process. We are looking for experienced Fullstack Consultants interested in becoming part of network and open to future collaboration opportunities adjusted to project needs, availability and specialization fit. Remuneration depends on the type of assignment. For hourly rates, our range is 150-190 PLN net + VAT. What kind of projects may you support? Depending on business demand and your availability, potential engagements may include: greenfield product development, feature acceleration initiatives, modernization projects, MVP and rapid prototyping work, delivery reinforcement for existing engineering teams, consulting and outcome-based delivery projects, short-term high-impact initiatives. Examples of what you could do 👇 You should be capable of: independently delivering end-to-end technical solutions, collaborating directly with technical and business stakeholders, structuring implementation scope and estimating effort, balancing engineering quality with pragmatic delivery decisions. What would we expect? experience estimating implementation scope, delivery timelines and required level of engagement based on business needs, strong experience building end-to-end solutions across backend and frontend (from architecture design to implementation and production readiness), focus on software quality, maintainability and real business impact, active and pragmatic use of AI tools. No specific tech stack? That's intentional. We work with companies facing different challenges, so we're always open to professionals with unique combinations of skills and experience. If you can create value through technology, we'd love to hear from you. Important! joining the network does not guarantee immediate project allocation, potential engagements may vary in duration, scope and workload, part-time, full-time and short-term cooperation models are possible. By joining the network, you may gain: access to international projects and consulting initiatives, including collaborations with Scandinavian clients, opportunities adjusted to your availability, preferred engagement model and technical strengths, long-term relationship instead of one-off transactional recruiting processes. We want to build a high-quality network of experienced consultants we know, trust and can match with the right opportunities over time. Sounds like a fit? Let’s talk! 🚀

🏢 Summary: Opportunity for experienced Fullstack Consultants to join a flexible collaboration network supporting diverse client projects such as greenfield development, MVPs, modernization, and delivery acceleration. Engagements vary in scope and duration, focusing on end-to-end solution delivery and outcome-based consulting. Compensation is assignment-based with hourly rates in the 150–190 PLN net + VAT range. 🗂️ Requirements: Proven experience delivering end-to-end backend and frontend solutions, Ability to design architecture and deliver production-ready systems, Experience estimating scope, timelines, and level of engagement, Capability to independently structure and implement technical solutions, Experience collaborating with technical and business stakeholders, Strong focus on software quality and maintainability, Practical use of AI tools in development work 📃 Skills: Backend, Frontend, Architecture, APIs, Databases, Testing, DevOps, Git, AI, Estimation 🏢 Description: We are building a verified network of experienced freelancers and consultants who can support our clients in flexible cooperation models: from short-term delivery acceleration and MVP initiatives to outcome-based consulting engagements. This is not a traditional recruitment process. We are looking for experienced Fullstack Consultants interested in becoming part of network and open to future collaboration opportunities adjusted to project needs, availability and specialization fit. Remuneration depends on the type of assignment. For hourly rates, our range is 150-190 PLN net + VAT. What kind of projects may you support? Depending on business demand and your availability, potential engagements may include: greenfield product development, feature acceleration initiatives, modernization projects, MVP and rapid prototyping work, delivery reinforcement for existing engineering teams, consulting and outcome-based delivery projects, short-term high-impact initiatives. Examples of what you could do 👇 You should be capable of: independently delivering end-to-end technical solutions, collaborating directly with technical and business stakeholders, structuring implementation scope and estimating effort, balancing engineering quality with pragmatic delivery decisions. What would we expect? experience estimating implementation scope, delivery timelines and required level of engagement based on business needs, strong experience building end-to-end solutions across backend and frontend (from architecture design to implementation and production readiness), focus on software quality, maintainability and real business impact, active and pragmatic use of AI tools. No specific tech stack? That's intentional. We work with companies facing different challenges, so we're always open to professionals with unique combinations of skills and experience. If you can create value through technology, we'd love to hear from you. Important! joining the network does not guarantee immediate project allocation, potential engagements may vary in duration, scope and workload, part-time, full-time and short-term cooperation models are possible. By joining the network, you may gain: access to international projects and consulting initiatives, including collaborations with Scandinavian clients, opportunities adjusted to your availability, preferred engagement model and technical strengths, long-term relationship instead of one-off transactional recruiting processes. We want to build a high-quality network of experienced consultants we know, trust and can match with the right opportunities over time. Sounds like a fit? Let’s talk! 🚀

🏢 Summary: Opportunity for experienced Fullstack developers to join a flexible freelance network supporting modernization and feature development of a large-scale aviation platform. The role focuses on migrating legacy PHP solutions to a modern JavaScript/TypeScript stack, improving AI-assisted workflows, and enhancing search, UX, and database-driven processes. Engagements are project-based (approx. 3 months) with potential for future collaborations across modernization and MVP initiatives. 🗂️ Requirements: Hands-on full-stack development experience, Strong JavaScript knowledge, Strong TypeScript knowledge, Experience with databases and data-driven workflows, Experience migrating or modernizing legacy systems in production, Experience with AI-powered features or workflow automation, Ability to work with AWS-based environments, Direct collaboration with business stakeholders 📃 Skills: JavaScript, TypeScript, PHP, AWS, Cloudflare, SQL, AI 🏢 Description: We are building a verified network of experienced freelancers and consultants who can support our clients in flexible cooperation models: from short-term delivery acceleration and MVP initiatives to outcome-based consulting engagements. This is not a traditional recruitment process. We are looking for experienced Fullstack interested in becoming part of network and open to future collaboration opportunities adjusted to project needs, availability and specialization fit. Remuneration depends on the type of assignment. For hourly rates, our range is 150-190 PLN net + VAT. Examples of what you could do 👇 The product is is a large-scale platform used by a global community of aviation enthusiasts, going through a major modernization phase. The team is replacing legacy PHP-based solutions with a modern JavaScript/TypeScript stack while continuously delivering value to thousands of active users. Some of the challenges you might help solve: Improving the photo upload and moderation process by introducing AI-assisted mechanisms. Modernizing legacy administration and screening tools. Improving search capabilities and overall discoverability of content. Increasing the reliability and consistency of database-driven workflows. Delivering UX improvements. Supporting the migration of consent management solutions to ensure compliance across multiple markets The platform runs on AWS and Cloudflare, and the focus is on evolving the application layer, developer experience, and product capabilities rather than rebuilding the infrastructure from scratch. Estimated duration: 3 months. What other projects could you work on with us? Depending on business demand and your availability, potential engagements may include: greenfield product development, feature acceleration initiatives, modernization projects, MVP and rapid prototyping work, delivery reinforcement for existing engineering teams, consulting and outcome-based delivery projects, short-term high-impact initiatives. What would we expect? Hands-on experience with full-stack development, including JavaScript and TypeScript and database-related challenges. Experience modernizing or migrating legacy systems while keeping production environments stable. Strong communication skills and willingness to collaborate directly with business stakeholders. Experience with AI-powered product features or workflow automation. Bonus points for experience with PHP! Important! joining the network does not guarantee immediate project allocation, potential engagements may vary in duration, scope and workload, part-time, full-time and short-term cooperation models are possible. By joining the network, you may gain: access to international projects and consulting initiatives, including collaborations with Scandinavian clients, opportunities adjusted to your availability, preferred engagement model and technical strengths, long-term relationship instead of one-off transactional recruiting processes. Sounds like a fit? Let’s talk! 🚀

🏢 Summary: B2B full-stack role for a Nordic SaaS project focused on designing and implementing scalable, cloud-based microservices and high-availability applications. The position emphasizes strong backend development in Java/Spring with modern frontend frameworks, test-driven practices, and cloud integrations. Work involves building robust, maintainable systems optimized for scalability and operational efficiency in a remote environment within Poland. 🗂️ Requirements: Minimum 5 years commercial experience as Full-Stack Developer, Strong experience with Java, Strong experience with Spring and Spring Boot, Experience with Angular or Vue.js, Experience in microservices architecture, Experience building REST APIs, Experience with relational databases and SQL, Knowledge of Linux and server operations, Experience with virtualization, Experience with automated testing frameworks, Understanding of cloud environments and serverless functions, Experience with autoscaling and high-availability systems 📃 Skills: Java, Spring, SpringBoot, Angular, Vue, JavaScript, TypeScript, REST, SQL, Microservices, Linux, Virtualization, Selenium, Wiremock, AWS, Lambda, CI/CD, Jenkins 🏢 Description: Contract: B2B Salary: 110–140 PLN/h net/B2B Location: Remote within Poland Start: ASAP Key Technologies Java (Spring, Spring Boot) JavaScript / TypeScript, Angular, Vue.js JSON/REST, Relational Databases (SQL) Microservices architecture, Autoscaling, High Availability Linux, Server Operations & Virtualization Automated Testing (Selenium, Wiremock) AWS Lambda or similar cloud functions Project Overview Join the team as a Full-Stack Developer supporting a Nordic SaaS customer. The project involves designing and implementing scalable, cloud-based microservices , delivering high-quality, adaptive software solutions. You will collaborate in cross-functional teams to improve architecture, develop automated and test-driven systems, and contribute to real-time, high-availability applications. The focus is on building robust backend services while integrating modern frontend frameworks, optimizing for scalability, maintainability, and operational efficiency . Responsibilities Design, develop, and maintain full-stack applications with emphasis on microservices architecture Apply test-driven development practices in an agile environment Collaborate in cross-functional teams to continuously improve systems and workflows Contribute to architecture decisions ensuring scalability, adaptability, and high availability Integrate cloud-based services (AWS Lambda or similar) Develop automated tests and CI/CD pipelines Leverage AI/automation tools where applicable to improve development efficiency Mentor junior developers and share knowledge of best practices Requirements Min. 4 years of commercial experience as a Full-Stack Developer (mid-to-senior level) Strong hands-on experience with Java, Spring / Spring Boot , and frontend frameworks Angular, Vue.js Experience in microservices, REST APIs, relational databases, SQL Solid knowledge of Linux, server operation, and virtualization Experience with automated testing frameworks like Selenium and Wiremock Understanding of cloud environments , serverless functions, and autoscaling Good communication skills in English (B2+/C1) Ability to work independently in an evolving product environment Nice to have Experience with Elixir, Scala, Python, or Asterisk Knowledge of WebRTC or SIP protocols Familiarity with CI/CD tools (Jenkins), project tools (Confluence, Jira) Exposure to AI-assisted development or custom AI integrations Experience with cloud-native architectures and large-scale SaaS systems Why join us? Rite NRG is a vibrant outsourcing technology company driven by the Right People . We are dedicated to empowering businesses through innovative software solutions. We focus on building strong partnerships and providing top-notch software solutions that drive real business growth. Our business model revolves around collaboration and delivering impactful results for our clients. Join us, and be part of a team where great minds, Right Energy , and strong partnerships come together to shape the future of technology! Stable, long-term, full-time collaboration. Remote work within Poland and flexible working hours. High engineering culture with a focus on growth and learning. Multinational teams. Benefits: Private medical care, Multisport card, and workation (work for a week from Barcelona or elsewhere).

🏢 Summary: Remote Kafka-focused engineering role with high hourly remuneration, offering autonomy and flexible cooperation. The position centers on administering, tuning, and consulting on Apache Kafka solutions, including leading trainings and supporting pre-sales activities. Projects involve cloud-native environments using Kubernetes, Docker, and major cloud platforms. 🗂️ Requirements: Hands-on experience with Apache Kafka administration, Experience with Kafka performance tuning, Strong knowledge of Kafka ecosystem, Ability to deliver Kafka consulting and lead technical trainings, Experience with technical pre-sales activities, Experience with Kubernetes, Experience with Docker, Very good knowledge of Ansible, Experience with cloud deployments (AWS, GCP, or Azure) 📃 Skills: Kafka, Kubernetes, Docker, Ansible, AWS, GCP, Azure, Cloud 🏢 Description: Our cooperation offer: Remuneration ranging from 165 to 210 PLN net per hour for a start 100% remote company with remote-first mindset Flexible cooperation from any location and without strict schedule Professional development and freedom in choosing toolset and tech stack Learning-culture expressed by SoftwareMill Academy and technical reading clubs Access to many AI tools (Claude, OpenAI, Cursor, Gemini, Copilot, etc.) Leadership and soft-skills in-house trainings English courses Small to medium teams with as little procedures as possible Best tools you need to make our cooperation effective and pleasurable: monitor(s), computer of your choice DevOps-friendly environment with passionate and skilled people who believe in software craftsmanship - you will have a chance to meet some of them during the selection process Interesting projects with technologies like Docker, Kubernetes, AWS, GCP, Terraform, clustering and scaling both horizontally and vertically What we expect: Hands-on experience with Apache Kafka administration, performance tuning, and its ecosystem Ability to perform Kafka consulting and lead Kafka trainings Experience with technical pre-sales activities and direct communication with business stakeholders Autonomy in project delivery Readiness to represent SoftwareMill at global events (London Current, Kafka Summit, etc.) Readiness to conduct demos and workshops with customers, both online and on-site Experience with Kubernetes and Docker Very good knowledge about Ansible Experience with deployment to a cloud (AWS, GCP, Azure, etc.) Comprehensive knowledge and understanding of the industry trends Good knowledge of English is a must (both spoken and written), we cooperate with clients from all over the world (USA, Australia, Switzerland, etc.) Polish language is required, as internally we are a Polish speaking company Nice to have: Confluent Certified Administrator for Apache Kafka (CCAAK) and/or Confluent Certified Developer for Apache Kafka (CCDAK) Hands-on experience with Confluent Platform Very good knowledge about various IaC tools (Terraform, Pulumi, Amazon CDK) Experience with Grafana Experience with MLOps and/or DevSecOps Experience with JVM applications Management of multi-node clusters Experience in using AI in software development and deployment cycle Engagement in the IT community: personal blog, speaking at meetups/conferences, involvement in the open-source projects Having a pet-project

🏢 Summary: Senior Fullstack Software Engineer role focused on building and deploying cloud-based systems using modern software craftsmanship practices and AI-assisted development tools. The position involves end-to-end software delivery, clean architecture, code reviews, testing, and improving delivery processes in a remote-first senior engineering team. 🗂️ Requirements: 5+ years of professional experience with Java or Kotlin, 3+ years of professional experience with JavaScript or TypeScript, Hands-on experience with SQL and NoSQL, Experience with AWS, GCP, or Azure, Experience with AI-assisted software development, Strong teamwork and collaboration skills 📃 Skills: Java, Kotlin, JavaScript, TypeScript, SQL, NoSQL, AWS, GCP, Azure, Microservices, TDD, BDD, DDD, Claude 🏢 Description: We are looking for a Senior Fullstack Software Engineer who is hungry to deliver quality software at pace, by utilising the latest technology trends and modern Software Craftsmanship techniques. Who are we ? We are a remote-first boutique software house company founded by a group of seasoned software experts (average experience in the team is 12 years). What connected all of us, despite a long-term relationship, is a passion for building Great Software that matters. We believe in people, so this is why the key values of Shaped Thoughts are autonomy and trust. Our people have a real and direct impact on what and how we build things. We put extra effort into ensuring everyone can make a difference and grow among other experts. Qualifications: 5+ years of professional experience with Java or/and Kotlin 3+ years of professional experience with JavaScript or/and TypeScript Hands-on experience with SQL and NoSQL Experience with cloud platforms (AWS / GCP / Azure) AI-assisted software development experience Nice to have: Microservices experience Understanding of distributed systems and event-driven architectures TDD, BDD practitioner Domain-Driven Design knowledge As a part of the team you will : Design, implement, code review, test and deploy cloud-based systems Develop software from start to finish - you ship it, you run it! Deliver quality technical solutions that come from a robust design and clean architecture Build & improve the software delivery process using tools such as Claude Code How do we work? We work as a team - all people can freely exchange knowledge and tasks, that’s why we’re looking for strong team players We believe in continuous improvement (Kaizen mindset) We’re happy to share knowledge and spend time learning our domain and new technologies We value asynchronous communication for work, however we meet in person to improve our personal relationships What do we offer ? Being a part of a strong senior team with an ability to learn and exchange knowledge Remote-first work environment B2B rate 140-190 PLN / hour, depending on your level of expertise Open-ended B2B contract or contract of employment Recruitment process It consists of the following stages: CV screening Tech screening (45 min) Live coding session (1h) Architecture task (1h) At least one of the stages must be completed on-site in one of the major cities: Wrocław, Poznań, Katowice, Kraków, Warszawa or Gdańsk. We actively encourage AI-assisted development in our daily work. However, during recruitment, we want to assess your individual skills - please don't use AI assistance unless explicitly permitted for a given stage.

🏢 Summary: Senior Java / Full-Stack Developer role focused on designing, implementing, and maintaining modern applications within a mature software architecture. The position involves backend development in Java, frontend work with modern frameworks, and participation in the full software lifecycle in an agile environment. Optional responsibilities include software architecture design, CI/CD pipeline development, and technical leadership. 🗂️ Requirements: Degree in Computer Science or equivalent professional experience, Strong professional experience in modern application development, Very good knowledge of Java and backend web services, Experience with relational and transactional databases, Experience with automated unit or integration testing, Practical experience with agile methodologies, Familiarity with Git or SVN and collaboration tools like Jira and Confluence, Solid understanding of architecture standards and best practices, English proficiency at minimum B2 level 📃 Skills: Java, SQL, REST, Angular, React, Git, SVN, Jira, Confluence, CI/CD, Cloud, JUnit, API, Databases 🏢 Description: We are looking for a Senior Java / Full-Stack Software Developer ! We offer: Salary: 150-180 PLN net/hour on B2B. Remote work from Poland. Responsibilities: ·       Design and implement new features and requirements in Java ·       Integrate solutions into an existing, mature software architecture ·       Participate in all phases of the software lifecycle: ­   Planning and technical conception ­   Implementation and testing ­   Maintenance and operational support ·       Ensure quality, stability, and maintainability of the software ·       Develop backend components (Java, databases, services, APIs) ·       Contribute to modern frontend development (e.g. Angular, React) ·       Actively collaborate within an agile, cross-functional team ·       Apply architectural standards, best practices, and clean code principles Optional: Architecture Responsibilities (Senior / Architect Track) Depending on experience and interest, you may additionally: ·       Design and further develop the overall software architecture ·       Select appropriate frameworks, tools, and cloud solutions ·       Take responsibility for complex systems and end-to-end solutions ·       Shape CI/CD pipelines and technical standards ·       Act as a technical point of contact and mentor for the team We are looking for: ·       Degree in (Business) Computer Science, or vocational training as IT Specialist, or comparable professional experience ·       Strong professional experience in developing modern applications · Very good knowledge of Java, including backend and web services ·       Experience with relational and transactional databases ·       Experience with automated tests (unit and/or integration tests) ·       Practical experience with agile development methodologies ·       Familiarity with version control and collaboration tools (e.g. Git/SVN, Jira, Confluence, common IDEs) ·       Solid understanding of architecture standards and best practices · English language skills (written and spoken), minimum B2 ·       Ability to work independently ·       Team-oriented mindset and customer-focused thinking Nice to Have: ·       Experience with Angular, React, or similar frontend frameworks ·       Exposure to financial systems or securities trading ·       Experience with CI/CD pipelines and cloud-based architectures ·       Background in long-lived enterprise or regulated systems Ta rola nie jest dla Ciebie, ale masz znajomego, który by się sprawdził? Poleć go i zgarnij nawet 5000 zł. Referral Program: Talent from your network Don't hesitate and apply now!

🏢 Summary: FullStack Developer role focused on building and enhancing a digital onboarding platform for Global Banking and Markets. The position involves developing scalable Java backend services and React-based user interfaces within a microservices architecture. The project emphasizes automation, security, performance, and DevOps-driven delivery in a hybrid work model. 🗂️ Requirements: Strong knowledge of Java 8+ / 18+, Proficiency in React JS, Experience with microservices architecture, Ability to write and maintain REST APIs, Experience with CI/CD tools, Experience debugging and extending existing code, Knowledge of database schema design, Understanding of DevOps practices and production support, Focus on application and service security 📃 Skills: Java, React, REST, Microservices, CI/CD, PostgreSQL, DevOps, SQL 🏢 Description: Location : Cracow Mode : hybrid (6x per month) Contract : B2B Rate : 170-190 PLN/h We are seeking a FullStack Developer to join our team working on our client’s onboarding solution. This role focuses on building the next generation of digital platforms for Global Banking and Markets, enhancing the onboarding experience for Corporates and Institutions. The ideal candidate will utilize their expertise to simplify the onboarding process, improving client experience and retention. This project embraces the latest technologies and encourages innovative thinking for automating tasks, learning new solutions, and maintaining a customer-first approach. Main Responsibilities: Develop and maintain high-quality, scalable Java applications. Implement and optimize React components for user-friendly interfaces. Debug existing code and extend functionality as needed. Write REST APIs and understand micro service architectures. Create and execute tests to validate functionalities and endpoints. Utilize CI-CD tools for seamless deployment and operations. Prioritize security in all service implementations. Contribute to performance and stability improvements of the platform. Engage in production support on a rotational basis within a DevOps POD. Collaborate in a fast-paced, innovative environment. Key Requirements: Strong knowledge of Java 8+ / 18+ Proficient in React JS Experience debugging and extending existing code Understanding of micro service architecture Capability to write REST APIs Experience with CI-CD tools Focus on security for functionalities and services Self-motivated with rapid learning capability Experience in a collaborative, fast-paced environment Problem-solving and analytical skills Good knowledge of database schema design, PostgreSQL is a plus Aware of DevOps practices and production support

🏢 Summary: Senior/Expert Java Developer role in an international SaaS project focused on building new AI-driven functionality and modernizing backend systems. The position involves technical ownership, architecture design, and development of scalable microservices-based solutions in a hybrid work model. Candidates will work with Java, Spring Boot, AI technologies, and Microsoft Foundry in a dynamic consultancy environment. 🗂️ Requirements: 8+ years of experience as a Java Developer, Strong knowledge of Java stack, Experience with CI/CD, Experience with Docker, Experience with microservices, Experience building end-to-end solutions, Commercial experience with AI tools, Experience with Microsoft Foundry, Ability to design scalable and maintainable systems, Experience in software house or consultancy environment, Strong understanding of backend architectures, Knowledge of backend development best practices, Strong technical skills, Strong communication skills, Ability to work on multiple projects simultaneously 📃 Skills: Java, Spring, SpringBoot, SQL, Docker, Microservices, CICD, MicrosoftFoundry, AI, Cloud 🏢 Description: Salary: Senior 1000–1300 PLN net / MD Expert/Leader 1300-1600 PLN net / MD (if your financial expectations are higher and justified by your experience, please let us know - we are open to discussing it) Work model: Kraków / Gdańsk  / Warsaw - hybrid work model (2 days per week from the office) Start date: As soon as possible. We can wait up to 1 month if required due to a notice period. Why choose this offer? Real influence on technical decisions and system architecture Dynamic, project-driven environment with diverse challenges Developing new AI-based functionality Project International project focused on building new AI-driven functionality within a modern SaaS platform. This role offers the opportunity to take technical ownership, shape architecture decisions, and contribute to the development of innovative solutions leveraging modern AI technologies, including Microsoft Foundry . Responsibilities you'll have Take technical ownership of the project Design and architect end-to-end backend systems and solutions Supervise and ensure technical quality across projects Support project estimations, including effort, budget, and cost calculations Create and maintain technical designs and documentation Collaborate closely with delivery and business stakeholders Adapt to different client environments, expectations, and technical stacks Work on several projects simultaneously — multitasking is essential Expected competences and knowledge 8+ years of experience as a Java Developer Solid knowledge of the Java stack Solid familiarity with CI/CD , experience working with Docker and microservices Experience in building end-to-end solutions Commercial experience with AI tools Experience with Microsoft Foundry Strong technical and soft skills Proven ability to design scalable and maintainable systems Experience working in a software house / consultancy environment Very good understanding of backend architectures and development best practices Nice to have Experience with cloud platforms (from a developer perspective) Knowledge of modern infrastructure and deployment approaches Technologies you'll work with Java Spring Boot SQL Microsoft Foundry Docker Microservices CI/CD Cloud platforms Client – why choose this particular client from the Jit portfolio? Our client is a leading European SaaS provider specializing in cloud-based solutions for the insurance and pension sector. The cooperation focuses on platform modernization and the development of new AI-based functionality , combining modern technologies with real business impact. About Jit Team The Human Factor of IT - it’s not just a slogan, it’s a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 770 experienced experts , to whom we offer developmental projects, a wide range of benefits, and a proprietary professional development programme. Together with clients from around the world, we create innovative IT solutions delivered by highly specialised and efficient teams. Behind our maxim are also charitable and educational activities. We support schools, universities, and educational institutions by conducting workshops, running educational projects, sponsoring events, and donating learning equipment. We offer internships that help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We also support numerous charitable organisations helping people in need, children, and the elderly. We are a Polish company and we share what we have achieved over more than 15 years of activity. By supporting local initiatives, we contribute to the circulation of good energy.

🏢 Summary: Senior/Mid Full‑Stack Java Developer role focused on modernising and rebuilding a business‑critical Collateral & Margining platform into a microservices‑based architecture. The position involves end‑to‑end development of Java microservices, full SDLC ownership, and production support within a global investment banking environment. You will contribute to a long‑term transformation using modern Agile, DevOps, and cloud‑native practices. 🗂️ Requirements: Strong experience with Java 17/21, Hands-on experience with Spring Boot and microservices architecture, Solid knowledge of PostgreSQL, Experience with DevSecOps or CI/CD pipelines, Strong TDD practice using JUnit and Cucumber, Experience building and consuming REST APIs, Experience with messaging systems, Experience working in Agile or DevOps environments, Ability to deliver complex systems from design to production 📃 Skills: Java, Spring, SpringBoot, SpringCloud, Angular, TypeScript, REST, PostgreSQL, Microservices, DevSecOps, CI/CD, JUnit, Cucumber, Ansible, Redis, Hazelcast, Coherence, MQ, Solace, GCP, AWS, Hystrix, Eureka, Zuul, Sleuth, Feign, Ribbon, HTML5, TDD, DevOps, Agile, GitHubCopilot 🏢 Description: Full‑Stack Java Developer – Global Investment Banking Platform (Kraków) B2B | 6 days per month in the office | 1300-1800 PLN A global investment bank is expanding its engineering hub in Kraków and is looking for experienced Senior and Mid Level Full‑Stack Java Developer’s to join a long‑term programme modernising a business‑critical Collateral & Margining platform used across global markets. This is a chance to join a mature engineering organisation driving a multi‑year transformation from monolithic systems to a modern, microservices‑based architecture. You’ll work on high‑impact technology used by thousands of institutional clients worldwide, while contributing to a brand‑new platform built with the latest open‑source tooling. About the Team & Platform The Collateral technology group delivers end‑to‑end solutions for a cross‑asset trading and risk environment. The team is currently: Supporting a large‑scale, business‑critical monolithic platform Building a new microservices‑based collateral platform using modern engineering practices Accelerating adoption of Agile, DevOps, AI‑assisted development, CI/CD, and cloud-native tooling Tech stack includes:Java 17/21, Spring Boot 3.5, Spring 6, Spring Cloud, Angular 17, TypeScript, REST APIs, Message Queues, Ansible, and modern open‑source infrastructure. Role Overview As a Senior Full‑Stack Java Developer, you will: Design, build, and maintain high‑quality Java microservices Contribute across the full SDLC, from design to production support Apply Agile and DevOps principles to improve delivery velocity Use TDD (JUnit), integration tests, regression tests, and Cucumber for E2E scenarios Collaborate closely with QA, product, and architecture teams Mentor junior engineers and support knowledge‑sharing across the team Support production systems: incident resolution, monitoring, and problem management Build automation and tooling to improve operational efficiency Essential Experience Strong experience with Java 17/21, Spring Boot, and microservices Solid knowledge of PostgreSQL and DevSecOps pipelines Experience working in Agile and/or DevOps environments Strong communication skills and ability to collaborate across global teams Proven experience delivering complex systems from concept to production Ability to translate functional requirements into scalable technical solutions Strong TDD discipline (JUnit, integration tests, Cucumber) Desirable Skills Experience with AI‑assisted development tools (e.g., GitHub Copilot) Spring Cloud components (Hystrix, Eureka, Zuul, Sleuth, Feign, Ribbon) Distributed caching/in‑memory data stores (Redis, Hazelcast, Coherence) REST APIs and messaging (MQ, Solace) Automated deployment tools (Ansible) TypeScript, Angular, HTML5 Cloud exposure (GCP/AWS) Why Join? Work on a mission‑critical global banking platform Contribute to a major multi‑year transformation Join a stable, established engineering organisation with modern practices Influence architecture, tooling, and engineering standards Long‑term project with strong investment and roadmap clarity