Java Full Stack Developer (Maternity Cover)

🏢 Summary: Senior Backend Developer role focused on designing, building, and maintaining scalable, secure backend services for a cloud-native digital platform supporting IoT-enabled solutions. The position involves end-to-end ownership of features, including development, testing, deployment, monitoring, and incident handling in a data-intensive, high-traffic environment. You will collaborate cross-functionally to deliver reliable systems using modern AWS-based infrastructure and DevOps practices. 🗂️ Requirements: Minimum 7 years of backend development experience, Strong knowledge of algorithms, data structures, system design, Proficiency in JavaScript and TypeScript, Experience with Node.js and npm, Hands-on experience with AWS services (Lambda, S3, DynamoDB, RDS, VPC), Experience with Kubernetes and Terraform, Experience building REST APIs, Knowledge of API security, authentication, authorization, OWASP, Experience with event-driven architecture, Experience with unit, E2E, and load testing, Experience with CI/CD pipelines and Docker, Experience monitoring and supporting production systems, Experience with data-intensive and high-traffic applications, Fluent English, Ability to work hybrid from Tumba office 3 days per week 📃 Skills: JavaScript, TypeScript, Node.js, npm, AWS, Lambda, S3, DynamoDB, RDS, VPC, CDK, Kubernetes, Terraform, REST, OWASP, Jest, Cypress, JMeter, SonarQube, Git, CI/CD, Docker, Grafana, Loki, Sentry, OpsGenie, Algorithms, DataStructures, SystemDesign 🏢 Description: 🚀 Senior Backend Developer Location: Krakow, Poland or Tumba, Sweden (Hybrid) Contract: B2B, Full-Time Join the Future of Digital Tech with Kolomolo At Kolomolo , we don’t just follow trends - we set them. As a global supplier of IT services and digital modernization solutions, we help businesses embrace cutting-edge technology to optimize their operations. Now, we are growing and looking for fresh talent to grow with us. Are you proactive, tech-savvy, and eager to build your career in IT? This role could be your perfect fit. About the Role Are you a backend developer who enjoys solving real-world problems with clean, scalable code? Do you want your work to have a meaningful impact beyond the screen? At Kolomolo,we are looking for a technically driven and collaborative Senior Backend Developer to join our cross-functional team developing our digital platform supporting modern dairy farmers around the world. In this role, you will work closely with Product Owners, Project Managers, Scrum Masters, UX Designers, QA Engineers, and other developers to build and maintain the backend services powering our website. You will be involved in the entire feature lifecycle - from design and development to testing, deployment, monitoring, and incident handling. You will build and evolve backend functionality that supports Service Technicians and Installers in their daily work. This includes solutions for installation, configuration, equipment health monitoring, troubleshooting, sw/fw update orchestration, device lifecycle orchestration, and IoT-enabled services. You will help shape robust, secure, scalable, and observable backend services using modern, cloud-native technologies. This role is ideal for someone who’s excited to deliver reliable systems at scale, enjoys working with data-intensive applications, and is passionate about making a difference in the lives of real users. What You’ll Be Doing Design, build, and maintain backend services for our platform; Collaborate with a cross-functional team to deliver high-quality features end to end; Write secure and testable APIs following OWASP and clean code principles; Manage infrastructure and deployments using modern IaC and DevOps tools; Work on data-heavy services that are central to our platform’s performance and reliability; Monitor services in production, respond to incidents, and continuously improve system resilience; Contribute to our culture of learning and knowledge sharing. What We Are Looking For We are looking for someone with at least 7 years of backend development experience. You should also have a solid foundation in computer science, with strong knowledge of algorithms, data structures, and system design. Languages & Runtime: JavaScript, TypeScript, Node.js, npm; Cloud & Infrastructure: AWS (Lambda, S3, DynamoDB, RDS, VPC), CDK, Kubernetes, Terraform; Architecture & Patterns: REST API development, API security (authentication, authorization, OWASP best practices), event-driven architecture; Testing & Quality: Jest (unit testing), Cypress (E2E), JMeter (load testing),SonarQube; DevOps & Observability: Git, CI/CD pipelines, Docker, Grafana, Loki, Sentry, OpsGenie; Best Practices: Clean code, secure coding, code reviews, production monitoring, incident response; Special Focus: Experience working with data-intensive and high-traffic applications; Computer Science Fundamentals: Algorithms, data structures, system design. You are not just a developer – you are a team player and a problem solver. We believe you will thrive here if you: • Take responsibility for your work and follow through; • Have strong technical curiosity and a drive to continuously learn; • Are proactive and enjoy taking initiative; • Value collaboration and helping others succeed; • Have experience handling incidents and working with customer service to improve production systems; • Have worked with production-grade systems and understand the importance of quality, reliability, and supportability; • Are fluent in English (required) and preferably also in Swedish; • Are able and willing to work from our Tumba office at least 3 days per week. What is in It for You Competitive salary and benefits; Career development opportunities in a growing tech company; Continuous learning culture: mentorship, internal training, and certifications; Flexible, agile work environment (hybrid in Kraków); Office perks: great coffee, tea, fresh fruit, snacks, and a fun atmosphere; Flat management structure, where your voice matters; Regular team events and a social, supportive work culture; B2B contract or Contract of Mandate (Umowa Zlecenie); 🌟 Why Join Kolomolo? At Kolomolo , we prioritize innovation, agility, and autonomy. Our teams have the freedom to own their work, share ideas, and make meaningful contributions. Inspired by Scandinavian values , we believe in work-life harmony and creating an inclusive culture where everyone thrives. You will be part of a passionate, skilled, and friendly team that works hard and celebrates together. Here, you can build your career on your own terms, with opportunities to grow, learn, and make a real impact. Our Flat Structure & The Culture of Inclusion At Kolomolo, we break the corporate mold. We offer: Agile Teams & Autonomy : No micromanagement. You’ll own your projects and enjoy the freedom to innovate. Work-Life Harmony : Inspired by Scandinavian values, we prioritize balance and flexibility, where remote work and asynchronous collaboration are in our DNA. Learning & Growth : Continuous learning is at our core. We reward hard work, value smart ideas, and foster an environment of mutual respect and trust. Inclusive Culture : We believe in DEI: diversity, equity and inclusion. We are committed to creating an environment where every individual, regardless of background, identity, or experience feels valued, respected, and empowered to thrive. Join Kolomolo and elevate your career with cutting-edge technology, a supportive team, and a company that truly values your input. Ready for the next step? Apply now and start an exciting journey of growth and innovation with us!

🏢 Summary: Senior Backend Developer role focused on building scalable, cloud-native microservices using TypeScript and Node.js in AWS environments. The position involves designing secure backend solutions, developing IAM services, implementing test automation, and deploying distributed systems in a CI/CD setup. Work includes close collaboration within agile teams on modern, serverless architectures. 🗂️ Requirements: Minimum 5 years backend/full stack development experience, Strong experience with TypeScript and NodeJS, Experience with Java or Python, Experience designing microservices and distributed systems, Hands-on experience with AWS serverless services, Experience with automated testing including integration and E2E tests, Experience with CI/CD pipelines, Knowledge of OAuth2, OIDC, JWT, Experience with Infrastructure as Code, Fluent Polish and English 📃 Skills: TypeScript, NodeJS, Java, Python, AWS, Lambda, APIGateway, DynamoDB, EventBridge, S3, SNS, SQS, Microservices, OAuth2, OIDC, JWT, Jest, Postman, Playwright, GitLab, Kubernetes, CDK, Terraform, Serverless, CI/CD 🏢 Description: 🚀 Senior Backend Developer Location: Kraków, Poland Experience: 5+ years Contract: B2B, Full-Time Join the Future of Digital Tech with Kolomolo At Kolomolo , we don’t just follow trends - we set them. As a global supplier of IT services and digital modernization solutions, we help businesses embrace cutting-edge technology to optimize their operations. Now, we are growing and looking for fresh talent to grow with us. Are you proactive, tech-savvy, and eager to build your career in IT? This role could be your perfect fit. About the Role We’re looking for a Senior Backend Developer who enjoys building reliable, scalable, and modern cloud-native applications. In this role, you’ll be responsible for backend feature development, system modernization, test automation, code refactoring, and production deployments. You’ll work on distributed systems and microservice-based architectures while contributing to the design and development of secure and high-performing backend solutions. This role is ideal for someone who combines strong technical expertise with a collaborative mindset and enjoys working in agile, engineering-driven environments. What You’ll Be Doing Develop microservices based on Typescript & NodeJS for core business components. Design and develop company’s internal IAM microservice, preparing for a migration on a new solution. Design and develop cloud native applications based on AWS services like Lambda, API Gateway, DynamoDB and EventBridge. Creating and running automated tests, particularly integration tests and end-to-end tests for the backend layer. Work closely with Architects & SRE to follow security & reliability standards while being  actively involved in architectural discussions. Work with external partners & vendors while developing various integrations. Collaborate with the team and drive it while ensuring high code quality and standards. Be actively involved in designing and developing reliable & secure backend features/functions. Work with continuously delivered (CI/CD), asynchronous and distributed systems Tech stack Runtime: Serverless (Lambda, API Gateway, EventBridge) Backend: NodeJS / Typescript (additional Java or Python) Persistency: DynamoDB, S3, SNS, SQS Architecture: Microservices IAM: oAuth2, OIDC Connect, JWT, OPAL CI/CD: GitLab QA: Playwright/ Postman/ Jest Infrastructure: AWS, Kubernetes, AWS CDK, Terraform What We Are Looking For Min. 5 years of experience as a backend/full stack developer, with recent projects in TypeScript & NodeJS and other backend programming language (preferably Java or Python). Experience in creating and running test automation with holistic approach including system, performance smoke and E2E tests (full testing pyramid) on Jest/Postman/Playwright. Ability to share your knowledge, experiences, and opinions on the forum via technology demos/brainstorming sessions. Willingness to grow and learn with a passion for creating new solutions. Experience in working closely with product and design teams as well as doing pair programming in small, agile, and cross-functional teams. Ability and openness to work in a team, especially within a culture of mutual respect and continuous feedback. Being a Team Player, able to help people to grow and guide decision-making processes. Open minded, communicative and focused on delivering business value . Fluent verbal and written skills in Polish and English. Nice to Have Familiarity with Customer Identity Access Management systems & solutions (CIAM), ideally with proven record in designing and implementing. Experience in Infrastructure as a code especially Terraform/ AWS CDK. Developing & maintaining team’s monitoring dashboards in Grafana stack (Prometheus, Looki). What is in It for You Competitive salary and benefits. Career development opportunities in a growing tech company. Continuous learning culture: mentorship, internal training, and certifications. Flexible, agile work environment (remote, hybrid, or on-site in Kraków). Office perks: great coffee, tea, fresh fruit, snacks, and a fun atmosphere. Flat management structure, where your voice matters. Regular team events and a social, supportive work culture. Independent Contractor. 🌟 Why Join Kolomolo? At Kolomolo , we prioritize innovation, agility, and autonomy. Our teams have the freedom to own their work, share ideas, and make meaningful contributions. Inspired by Scandinavian values , we believe in work-life harmony and creating an inclusive culture where everyone thrives. You will be part of a passionate, skilled, and friendly team that works hard and celebrates together. Here, you can build your career on your own terms, with opportunities to grow, learn, and make a real impact. Our Flat Structure & The Culture of Inclusion At Kolomolo, we break the corporate mold. We offer: Agile Teams & Autonomy : No micromanagement. You’ll own your projects and enjoy the freedom to innovate. Work-Life Harmony : Inspired by Scandinavian values, we prioritize balance and flexibility, where remote work and asynchronous collaboration are in our DNA. Learning & Growth : Continuous learning is at our core. We reward hard work, value smart ideas, and foster an environment of mutual respect and trust. Inclusive Culture : We believe in DEI: diversity, equity and inclusion. We are committed to creating an environment where every individual, regardless of background, identity, or experience feels valued, respected, and empowered to thrive. Join Kolomolo and elevate your career with cutting-edge technology, a supportive team, and a company that truly values your input. Ready for the next step? Apply now and start an exciting journey of growth and innovation with us!

🏢 Summary: Long-term opportunity for a Full-Stack Java Developer to modernize a business-critical Collateral & Margining platform within a global investment banking environment. The role focuses on building and maintaining Java-based microservices while contributing to a transformation from monolithic systems to a cloud-native architecture. You will work across the full SDLC using modern Agile, DevOps, and automated testing practices. 🗂️ Requirements: Strong experience with Java 17/21, Hands-on experience with Spring Boot and microservices architecture, Solid knowledge of PostgreSQL, Experience with DevSecOps pipelines, Experience working in Agile and DevOps environments, Strong TDD practice using JUnit and integration testing, Experience with Cucumber for E2E testing, Experience delivering complex systems to production, Experience with REST APIs and messaging systems 📃 Skills: Java, Spring, SpringBoot, SpringCloud, Angular, TypeScript, PostgreSQL, Microservices, REST, MQ, Solace, Ansible, JUnit, Cucumber, DevSecOps, CICD, Redis, Hazelcast, Coherence, GCP, AWS, Hystrix, Eureka, Zuul, Sleuth, Feign, Ribbon, HTML5, GitHubCopilot 🏢 Description: Full‑Stack Java Developer – Global Investment Banking Platform (Kraków) B2B| Krakow | Hybrid: 6 days per month A global investment bank is expanding its engineering hub in Kraków and is looking for an 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

🏢 Summary: B2B contract opportunity for a Java Fullstack Developer with a strong backend focus (60–70%) to build and maintain applications within a Digital Platform using a modern tech stack. The role involves developing backend and frontend components, participating in code reviews and technical discussions, and contributing to architectural decisions in a distributed team environment. 🗂️ Requirements: Core Java 11, Advanced Java (JDBC, Collections, Serialization, Memory management), Spring framework, JPA (Hibernate), RDBMS knowledge, Strong SQL skills, RESTful web services, XML and JSON, OpenAPI (Swagger), JavaScript, Typescript, HTML, CSS, Angular 14+, RxJS, Git, Maven, npm, Frontend security (OWASP), Backend security knowledge 📃 Skills: Java, JDBC, Collections, Serialization, Spring, JPA, Hibernate, SQL, RDBMS, REST, XML, JSON, OpenAPI, Swagger, JavaScript, Typescript, HTML, CSS, Angular, RxJS, Git, Maven, npm, OWASP 🏢 Description: For one of our clients, we are looking for a Java Fullstack Developer (m/f/n). As part of the Digital Platform team, you will work on several applications utilizing a modern technology stack. You will get the opportunity to not only learn and grow but also to contribute and be involved in technical discussions and decision making. You will be working in a very nice, dynamic, multi-cultural and geographically distributed team and will receive a lot of support during your onboarding phase. The skill split is 60/40 or 70/30, with a stronger focus on backend. Responsibilities Development (Backend and Frontend) on several applications within the Digital Platform scope, both on new and existing applications Perform code reviews Participate in SCRUM events Participate in technical analysis and discussions Be proactive and take initiative Work closely with your colleagues and communicate Requirements Core Java V11, Advanced Java (JDBC, Collections, Serialization, Memory management) Web communication: XML, JSON, REST Spring framework JPA (Hibernate) Knowledge of RDBMS, specifically SQL skills Web communication: experience with OpenAPI specifications (Swagger) Proficiency in Web languages (JavaScript, Typescript, HTML, CSS) Proficiency in Angular 14+ framework (SPA) Knowledge of reactive programming (RxJS) Good understanding of GIT, Maven, and npm Understanding of Agile Workflow Understanding of Frontend Security topics (owasp) Understanding of Backend Security topics Fluency in English (B2 level) Nice to have: Experience with the Redux pattern (NgRX) & store management Experience with the Nx build system library Build and Deployment automation (Jenkins, Sonar) Microservice architecture and development (Spring Boot) Experience in leading a (geographically distributed) technical team Experience being involved in technical design Our offer: Rate: 130 - 140 PLN/h net + VAT B2B contract via SHIMI Hybrid – 2 days per week from the Warsaw or Kraków office Start: ASAP – notice period up to 2 weeks

🏢 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

🏢 Summary: Contract B2B Fullstack Developer role (hybrid in Wroclaw) focused on building and maintaining enterprise-grade financial platforms using Java/Spring Boot and Angular. The position involves developing microservices, scalable APIs, and responsive UI components while contributing to CI/CD and DevOps practices. The role requires ensuring high performance, security, and reliability within Agile teams. 🗂️ Requirements: Strong experience in Java 17/21+, Strong experience with Spring Boot, Experience with microservices architecture, Solid experience in Angular 14/16+, Experience with TypeScript, HTML, CSS, Experience building REST APIs, Experience with relational databases (Oracle, SQL Server, or PostgreSQL), Experience with Git, Experience with CI/CD tools (Jenkins or GitHub Actions), Understanding of secure application design, Experience working in Agile/Scrum 📃 Skills: Java, Spring, SpringBoot, Angular, TypeScript, HTML, CSS, REST, Microservices, Oracle, SQLServer, PostgreSQL, Git, Jenkins, GitHubActions, CI/CD, Agile, Scrum 🏢 Description: We are looking for a talented and experienced Fullstack Developer to join our growing team at a global leader in financial services platforms. Work mode: Hybrid, 3 days from office in Wroclaw, Poland Type of contract: Contract: B2B only ( 1 year with extensions) Key Responsibilities: Design, develop, test, and maintain full-stack applications using Java/Spring Boot on the backend and Angular on the frontend. Build scalable APIs, microservices, and UI components for enterprise-grade platforms. Ensure application performance, code quality, security, and reliability through best engineering practices. Participate in code reviews, design discussions, and continuous improvement initiatives. Troubleshoot production issues, perform root cause analysis, and implement sustainable fixes. Contribute to CI/CD pipelines , automated testing, and DevOps practices to improve software delivery. Support integration with databases, messaging systems, and third-party/internal enterprise services. Follow Agile/Scrum practices and actively participate in sprint ceremonies. Required Qualifications: Strong hands-on experience in Java  ( 17/21+) development , with Spring Boot and microservices architecture. Solid experience in Angular ( 14/16+) , TypeScript, HTML, CSS, and responsive UI development. Good understanding of REST APIs, backend integration patterns, and secure application design. Experience with relational databases such as Oracle, SQL Server, or PostgreSQL. Familiarity with source control tools such as Git, and CI/CD tools such as Jenkins, GitHub Actions, or similar. Understanding software development lifecycle, testing frameworks, and Agile methodologies. Strong analytical, problem-solving, and communication skills. Experience with version control systems, preferably Git. Benefits: Collaborative and supportive team culture Opportunity to work with global teams and stakeholders Exposure to innovative and impactful projects 📩 If you’re interested and meet the qualifications, please send your CV to Alina Pchelnikova at alina.pchelnikova@dcvtechnologies.co.uk

🏢 Summary: Senior Full Stack Java Developer role focused on building secure, scalable enterprise applications in the fintech and payments domain. The position covers full-stack development, AI-assisted engineering, and CI/CD automation within a modern microservices architecture. The role involves end-to-end delivery from design to deployment in a hybrid work model. 🗂️ Requirements: 5+ years commercial experience with Java, Strong expertise in SpringBoot, Strong expertise in SpringSecurity, Strong expertise in Hibernate and JPA, Experience building REST APIs, Experience with microservices and distributed systems, Solid knowledge of HTML5 CSS3 JavaScript, Hands-on experience with React Angular or Vue, Experience with Jenkins pipelines, Experience with Docker and Kubernetes, Experience with MySQL PostgreSQL or Oracle, Knowledge of software architecture and design patterns, Experience working in Agile Scrum, Understanding of cryptography encryption digital signatures and key management, Experience writing unit and integration tests using JUnit and Mockito 📃 Skills: Java, SpringBoot, SpringSecurity, Hibernate, JPA, REST, Microservices, HTML5, CSS3, JavaScript, React, Angular, Vue, Jenkins, Docker, Kubernetes, MySQL, PostgreSQL, Oracle, JUnit, Mockito, CICD, Agile, Scrum, Cryptography, Encryption, DigitalSignatures, KeyManagement, DesignPatterns 🏢 Description: 🚀 Senior Full Stack Java Developer 📍 Hybrid | 1 day from the office in Gdańsk or Warsaw Are you an experienced Full Stack Developer passionate about building secure, scalable applications and leveraging the latest AI-powered development tools? Join our team and help shape innovative solutions within the payments and fintech space. We're looking for a Senior Software Engineer who combines strong Java expertise with a modern engineering mindset and enthusiasm for Agentic AI technologies such as GitHub Copilot, ChatGPT, Claude, and Cline. 💡 Your Mission As a Senior Full Stack Java Developer, you will: 🔧 Development & Engineering Design, develop, and maintain enterprise-grade full-stack applications. Build scalable backend services using Java, Spring Boot, and Spring Security. Develop modern, responsive user interfaces using React, Angular, or Vue.js. Optimize database interactions using Hibernate/JPA. Design and implement secure solutions for handling sensitive financial data. Participate in the full software development lifecycle—from concept to deployment. 🤖 AI-Powered Development Utilize Agentic AI tools to accelerate development and improve code quality. Apply AI solutions for coding, testing, documentation, and troubleshooting. Explore and adopt emerging AI technologies to enhance engineering efficiency. Share AI best practices and drive innovation within the team. ⚙️ CI/CD & DevOps Build and maintain Jenkins CI/CD pipelines. Automate testing, deployment, and release processes. Improve development workflows and delivery speed. ✅ Quality & Testing Create and maintain unit and integration tests using JUnit and Mockito. Participate in code reviews and quality assurance initiatives. Debug and solve complex technical challenges. 🤝 Collaboration Work closely with Product Managers, QA Engineers, Designers, and fellow Developers. Participate in Agile/Scrum ceremonies. Contribute to technical documentation and knowledge sharing. 🎯 Must-Have Skills Backend ✔️ 5+ years of commercial Java development experience ✔️ Strong expertise in: Java Spring Boot Spring Security Hibernate/JPA ✔️ Experience building RESTful APIs ✔️ Experience with microservices and distributed systems Frontend ✔️ Solid knowledge of: HTML5 CSS3 JavaScript ✔️ Hands-on experience with: React Angular Vue.js DevOps & Infrastructure ✔️ Jenkins CI/CD ✔️ Docker & Kubernetes ✔️ MySQL, PostgreSQL, or Oracle Engineering Practices ✔️ Software architecture and design patterns ✔️ Agile/Scrum methodologies ✔️ Understanding of cryptography, encryption, digital signatures, and key management ⭐ Nice to Have Experience with AWS, Azure, or GCP Android or iOS development experience Open-source contributions Technical blogging or community involvement 💳 FinTech & Payments Experience 2+ years in fintech, payments, or financial services will be great (nice to have) Knowledge of ISO 8583, EMV, and PCI DSS Experience with HSMs and key management systems Familiarity with tokenization and real-time payment systems Understanding of financial compliance and regulations 🎁 What You'll Get ✨ Opportunity to work on innovative fintech products ✨ Exposure to cutting-edge AI-powered development practices ✨ Hybrid work model (Gdańsk or Warsaw) ✨ Collaborative and supportive engineering culture ✨ Influence on architecture and technical decisions ✨ Continuous learning and professional growth opportunities 🚀 Ready to build the future of fintech with AI-enhanced engineering? Apply now and join a team where modern technology, innovation, and engineering excellence come together.

🏢 Summary: Full-stack Java developer role in the financial sector focused on building scalable microservices and modern frontend applications in an Agile environment. The position involves backend and frontend development using Java, Angular, cloud-native technologies, and distributed systems integrations. Hybrid work model with a long-term international project and competitive B2B rate. 🗂️ Requirements: 5+ years of commercial Java development experience, 2+ years of Angular experience, Knowledge of Spring Framework, Experience with microservices architecture, Experience with Docker, Experience with Kubernetes, Experience with Kafka and distributed systems, Knowledge of REST APIs, Knowledge of SQL, Experience with Oracle databases, Experience with Git, Understanding of Clean Code principles, Understanding of Continuous Integration, Experience integrating REST and SOAP services, Knowledge of XML, Knowledge of JSON, Knowledge of Avro, English level B2 or higher 📃 Skills: Java, Angular, React, Spring, Docker, Kubernetes, Kafka, REST, SQL, Oracle, Git, SOAP, XML, JSON, Avro, Jenkins, ArgoCD 🏢 Description: Senior Java Full-stack Developer 📍 Location: Warsaw, Gdańsk or Gdynia 🏢 Work model: Hybrid (3 days per week in the office) 📅 Project duration: August 2026 – January 2027 💰 B2B rate: up to 157 PLN/h ⏰ Full-time (40h/week) About the project Join an international financial institution and become part of a team responsible for building modern, scalable solutions supporting one of the company's key business domains. You will work in an Agile environment, developing cloud-ready microservices and integrating modern applications with existing enterprise platforms. This role combines backend and frontend development while giving you the opportunity to work with modern technologies, distributed systems, and high-performance applications. Your responsibilities Design, develop and maintain full-stack applications. Build and enhance Java-based microservices. Develop modern frontend solutions using Angular. Integrate applications using REST APIs, Kafka, MQ and Oracle databases. Participate in migration and transformation of existing systems. Ensure application quality, scalability and performance. Collaborate with architects, analysts, QA engineers and business stakeholders. Contribute to code reviews and technical improvements. We are looking for someone who has Minimum 5 years of commercial experience with Java development. At least 2 years of experience with Angular (React is also valued). Strong knowledge of Spring Framework . Experience building microservices architectures . Practical experience with Docker and Kubernetes . Experience working with Kafka and distributed systems. Knowledge of REST APIs , SQL and Oracle databases. Experience with Git . Understanding of Clean Code , Continuous Integration and software engineering best practices. Experience integrating REST and SOAP services. Good understanding of XML, JSON and Avro . Good command of English (B2 or higher) . Nice to have Jenkins Argo CD Event Sourcing Schema Registry DevOps practices What we offer Competitive B2B rate of up to 157 PLN/hour . Long-term international project. Opportunity to work with modern cloud-native technologies. Challenging projects within the financial sector. Professional, collaborative and Agile environment. Work with experienced engineers on large-scale enterprise solutions.

🏢 Summary: Full-stack Developer role focused on building scalable, microservices-based applications using Java 21 and Spring Boot, with involvement across backend, frontend, testing, CI/CD, and cloud-native deployment. The position involves developing RESTful APIs, ensuring code quality, and deploying containerized solutions in a modern DevOps environment. The offer targets experienced engineers capable of delivering complex software solutions in international projects. 🗂️ Requirements: Minimum 4 years of hands-on experience in Java development, Strong experience with Spring and Spring Boot, Experience building RESTful APIs and microservices, Working knowledge of at least one frontend framework (preferably React), Proficiency with Git version control, Experience with SQL and NoSQL databases, Experience with Maven for build and dependency management, Experience with unit testing using JUnit and Mockito, Experience with Docker or Kubernetes, Experience working with CI/CD pipelines and Jenkins, Fluent English 📃 Skills: Java, Spring, SpringBoot, React, REST, Microservices, JUnit, Mockito, Wiremock, SonarQube, Docker, Kubernetes, ELK, BitBucket, Maven, Jenkins, Git, SQL, NoSQL 🏢 Description: At Jacobs, we're embarking on an exciting journey as we initiate the development of our Digital & Data Hub in the heart of Krakow. Our mission is to undertake projects spanning various industries, including Consumer and Manufacturing, Defence and Security, Energy and Utilities, Financial Services, Government and Public Services, Health and Life Sciences, and Transport. We are seeking a Full-stack Developer with expertise spanning various aspects of software development, including Java OOPS concepts, Java 21 features, web applications, REST services, testing frameworks, and more. The ideal candidate will have a proven track record of successful project implementation. Key Responsibilities: Apply object‑oriented programming principles in Java to deliver scalable and maintainable solutions Work with Java 21, making use of streams, functional interfaces, and collections for cleaner code Build microservices with Spring Boot and related frameworks, ensuring modular and efficient system design Develop RESTful APIs following industry best practices for implementation and consumption Write unit and integration tests using JUnit, Wiremock, and Mockito to ensure reliability and coverage Maintain high code quality through automated checks with SonarQube Deploy and orchestrate applications using Docker and Kubernetes Set up monitoring and logging with the ELK stack to support observability and troubleshooting Navigate CI/CD pipelines with BitBucket, Maven, and Jenkins to streamline delivery Contribute to team standards by conducting thorough code reviews Here's what you'll need: Minimum 4 years of hands-on experience in Java development Strong background in Spring and Spring Boot frameworks Working knowledge of front‑end technologies and at least one framework (preferably React ) Proficient in version control systems, especially Git Solid understanding of both SQL and NoSQL databases Experience with build and dependency management tools, particularly Maven Skilled in unit testing, particularly with JUnit and Mockito Proven ability to design and deliver complex software solutions Experience using Google Cloud Platform (GCP) in day‑to‑day software development Familiarity with containerization and orchestration tools like Docker or Kubernetes Experience working in a consulting environment, including collaboration with multiple stakeholders and clients Familiarity CI/CD pipelines and related tooling (Jenkins, Kubernetes, etc.) Strong analytical thinking and problem-solving capabilities Excellent communication and teamwork skills Fluent in English We offer: Rewarding employment - full-time employment with a salary that matches your qualifications Hybrid work model - enjoy the flexibility of working mostly from home Flexible hours - start your day anytime between 7:30 and 10:00 AM Comprehensive benefits, including Lux Med medical care, psychological support, life insurance, My Benefit cafeteria system, Multisport card co-financing, and a car/bike park sharing system Co-financed holidays - enjoy "Wczasy pod Gruszą" for a well-deserved break Global projects - engage in exciting international projects Inclusive networks - join our diverse employee networks like Women's Network, OneWorld, PRISM, Careers Network, Green Team, SpeakUp, Collectively, and more Continuous learning - participate in our Graduate Development Program, Learners’ Community, and self-learning platforms Language courses - enhance your skills with courses in English, German, and Polish We know that if we are inclusive, we’re more connected, and we’re more creative.  We accept people for who they are.  Find out more about life at Jacobs .  As a Disability Confident employer, we will interview all disabled applicants who meet the criteria for a vacancy.  If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team recruitmentpoland@jacobs.com

🏢 Summary: Hybrid Java Fullstack Developer role focused on modernizing and automating claims management systems in the insurance domain. The position involves building scalable microservices-based solutions, applying modern architectural patterns, and contributing to high-quality software delivery in an Agile environment. 🗂️ Requirements: Minimum 4 years of experience in Java programming, Experience with Spring and Spring Boot, Basic experience or strong interest in Angular 14+, Familiarity with microservices architecture, Basic experience with Kubernetes, Knowledge of relational databases, Experience with Git, Experience with testing frameworks, Understanding of DDD, CQRS, Hexagonal Architecture, or EDA, Experience working in Agile/Scrum teams, Experience with messaging systems, Polish language proficiency, Legal right to work in the European Union 📃 Skills: Java, Angular, Spring, SpringBoot, Kubernetes, Microservices, Oracle, PostgreSQL, Git, JUnit, Spock, Testcontainers, DDD, CQRS, EDA, HexagonalArchitecture, Scrum 🏢 Description: Build innovation at the heart of customer support—modernize claims technology and turn complexity into clarity! Warsaw-based opportunity with hybrid work model. As a Java Fullstack Developer , you will be working for our client, a leading player in the insurance industry dedicated to delivering exceptional post-sales support through technological excellence. You will contribute to optimizing claims processing and elevating customer satisfaction by developing cutting-edge software solutions that automate and streamline business processes—driving innovation and continuous improvement. Your main responsibilities: Develop and enhance software for the claims management domain, focusing on meeting business needs. Implement, maintain, and document high-quality code in line with best practices. Collaborate with cross-functional teams to ensure seamless integration and delivery. Participate in code reviews, testing, and documentation to uphold software integrity. Contribute to adopting architectural patterns such as DDD, CQRS, Hexagonal Architecture, and EDA. Work with microservices, container orchestration (Kubernetes/K8s), and relational databases to build scalable solutions. Apply Agile/Scrum practices within a dynamic team environment. You're ideal for this role if you have: Minimum 4 years of experience in Java programming (Java versions such as 8/11/17/21). Basic experience or strong interest in Angular 14+ . Experience with Spring / Spring Boot . Basic familiarity with microservices and Kubernetes . Knowledge of Git , relational databases (Oracle/PostgreSQL), and testing frameworks such as JUnit , Spock , and Testcontainers . Strong understanding of good programming practices. Experience working with messaging systems and ability to build maintainable solutions. Proven ability to work effectively in Agile teams . It is a strong plus if you have: (optional) Experience with additional architecture or integration patterns aligned with DDD/CQRS/EDA adoption. Language Required for the role : Polish — required Eligibility for the role : Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.