June 2, 2026
Java Full Stack Developer
Senior • Remote
1,100 - 1,200 PLN
Warsaw, Poland
🚀 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.
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Warsaw, Poland
16,800 - 27,300 PLN
🏢 Summary: Hybrid FullStack Developer (Java & Angular) role focused on building and maintaining scalable credit applications for international banking operations within a leading European bank’s technology hub. The position involves end-to-end development of microservices-based systems, ensuring high code quality, regulatory compliance, and collaboration across global teams. Candidates will work with modern Java and Angular stacks, contributing to design, implementation, maintenance, and continuous improvement of critical banking systems. 🗂️ Requirements: Minimum 3 years experience as FullStack Developer, Strong experience with Java 11+ and JDK 8+, Experience with Spring Framework (Boot, Batch, Security), Experience with Hibernate and JUnit, Experience building RESTful microservices (2-3 years), Experience with Angular 8+ (preferably 14) (2-3 years), Experience with TypeScript, JavaScript, HTML, CSS, Experience with SQL and PL/SQL, Experience with Oracle databases, Understanding of Agile methodologies, Knowledge of DevOps and CI/CD tools, Fluent English, Legal right to work in the European Union 📃 Skills: Java, JDK, Spring, Hibernate, JUnit, REST, Microservices, Angular, TypeScript, JavaScript, HTML, CSS, SQL, PLSQL, Oracle, Jenkins, JSON, XML 🏢 Description: Build full-stack platforms that move real-world business—securely, fast, and at scale. Location & work model Warsaw-based opportunity with hybrid work model. (Up to 4 remote days per week.) As a Mid-Level Java & Angular Full-Stack Developer / Senior Java & Angular Full-Stack Developer , you will be working for our client in a technology-driven environment supporting mission-critical applications across industries including logistics (sea freight), automotive financing, and banking . You’ll help design and deliver modular systems by combining modern Java services with responsive Angular user interfaces. Your main responsibilities: Develop and maintain full-stack features using Java (Java 8/17/21) and Angular for end-to-end functionality. Build backend services with Spring Boot and related Spring frameworks to support scalable application logic. Integrate asynchronous messaging using RabbitMQ and Kafka to ensure reliable data flow. Collaborate on database-driven solutions using Oracle , PostgreSQL , and/or MySQL . Work with build and dependency management via Maven in a structured CI/CD-ready codebase. Deliver clean, maintainable code for modular enterprise applications, including both backend-heavy and full-stack contributions. Contribute to the evolution of applications across the full lifecycle—from development through ongoing improvements. You're ideal for this role if you have: Minimum 3 years of professional experience in Java development and full-stack delivery. Strong experience with Java (Java 8/17/21) and Spring/Spring Boot . Hands-on experience with Angular for frontend development. Working knowledge of messaging systems such as RabbitMQ and/or Kafka . Experience with relational databases including Oracle , PostgreSQL , and/or MySQL . Familiarity with Maven and a modern Java build workflow. Ability to work effectively in a hybrid setup within Poland (Warszawa, Krakow) . It is a strong plus if you have: (optional) AWS certification and experience delivering applications on AWS. Experience building systems in modular enterprise environments (large-scale applications). Language Required for the role : English – fluent 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.
Technology
Caspian One
Java Developer | Investment Bank
Senior
Hybrid
Krakow, Poland
1,300 - 1,800 PLN
🏢 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