Senior Java Developer - AI

🏢 Summary: B2B contract role for a Senior Java Developer to design and build high‑performance, low‑latency backend services for trading and risk systems within an international Agile team. The position focuses on developing microservices, REST APIs and distributed components supporting critical transaction workflows. You will influence architecture and engineering standards while optimizing scalability, stability and performance. 🗂️ Requirements: 5+ years Java backend development experience (Java 11+), Strong knowledge of REST and HTTPS, Experience with microservices architecture, Experience with messaging systems (MQ), Experience with SQL, Experience with Postgres, Sybase or similar database, Experience leading delivery of Java-based modules or services, Experience working in Agile environment, Fluent English 📃 Skills: Java, REST, HTTPS, Microservices, MQ, SQL, Postgres, Sybase, CI/CD, Agile 🏢 Description: Senior Java Developer 📍 Location: Kraków, Poland (hybrid: 2 days in the office, 3 days remote) 📄 B2B Contract: 190 – 230 PLN / hour We are looking for a proactive Senior Java Developer to join an international Agile team building high‑performance backend solutions for trading and risk‑related systems. You will work closely with engineers and analysts to design, develop and optimize services supporting critical business processes. This role offers the opportunity to work on low‑latency, high‑throughput applications and influence architecture, engineering standards and delivery quality across a complex technology landscape. Key Responsibilities: Design and develop backend services and microservices in Java. Build and maintain RESTful APIs and distributed system components. Develop high‑availability, high‑performance solutions supporting trading workflows. Integrate with internal platforms and support end‑to‑end transaction lifecycle. Optimize system performance, stability and scalability. Collaborate with global engineering and business teams. Participate in Agile ceremonies: sprint planning, reviews, retrospectives and daily stand‑ups. Requirements: 5+ years of experience in Java backend development (Java 11+). Strong knowledge of REST, HTTPS, microservices and messaging (MQ). Experience with SQL and at least one mainstream database (Postgres, Sybase or similar). Experience owning or leading delivery of Java‑based modules or services. Strong analytical and problem‑solving skills. Very good communication skills in English. Ability to work in a dynamic environment and handle pressure. Curiosity, proactiveness and continuous learning mindset. Nice to Have: Experience in production environments. Experience with Agile development and CI/CD. Domain knowledge in financial systems: trade lifecycle, post‑trade, FX. What We Offer: Long‑term cooperation within an international engineering environment. Real influence on architecture, engineering standards and delivery quality. Work in a multicultural, distributed setup. Private medical care (LuxMed) and Multisport card. Hybrid model: 2 days per week in the Kraków office. Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Senior Java Engineer role in a global banking transformation programme focused on building a next-generation in-house Collateral & Facility Management platform. The position involves developing enterprise-grade microservices on GCP while leveraging GenAI-assisted SDLC practices. You will deliver secure, scalable, production-ready solutions within international cross-functional teams. 🗂️ Requirements: Strong hands-on experience with Java, Strong hands-on experience with Spring Boot, Experience building production-grade microservices, Experience with distributed systems, Experience with Oracle and/or PostgreSQL, Experience with JUnit, Mockito, Testcontainers, Experience with API and contract testing, Experience with CI/CD pipelines, Experience with Jenkins or GitLab, Experience with SonarQube and SAST/DAST tools, Understanding of RESTful APIs and event-driven architectures, Hands-on experience with GCP, Knowledge of secure software development practices, Practical exposure to LLMs and GenAI-assisted development 📃 Skills: Java, Spring, SpringBoot, GCP, Oracle, PostgreSQL, JUnit, Mockito, Testcontainers, Jenkins, GitLab, SonarQube, SAST, DAST, REST, Microservices, CI/CD, LLM, GenAI 🏢 Description: 📍 Location: Kraków (hybrid: 2 days in the office / 3 days remote) 📄 B2B: 200 - 250 PLN/h 🏦 Industry: Banking We are currently looking for an experienced Senior Java Engineer with GCP / GenAI to join a strategic global banking programme focused on building next-generation Collateral & Facility Management capabilities. The initiative involves developing an in-house enterprise platform that will replace an existing commercial solution, leveraging modern engineering practices and an AI-enabled Software Development Lifecycle (SDLC). This role combines hands-on software engineering, cloud technologies, modern integration patterns, and responsible adoption of AI-assisted development. You will work within international cross-functional teams delivering scalable, secure, and production-ready solutions while contributing to the adoption of GenAI-powered engineering practices across the programme. Key responsibilities: Design, develop, test, and maintain enterprise-grade Java microservices and backend components. Contribute to solution architecture and integration design, ensuring alignment with target architecture and non-functional requirements. Deliver high-quality production code with a strong focus on security, resilience, maintainability, and performance. Build and support distributed services running in cloud environments. Develop robust automated testing strategies, including unit, integration, and contract testing. Participate in technical design reviews, code reviews, and security reviews, ensuring engineering quality standards are met. Collaborate with architects, Tech Leads, QA, SRE, platform teams, and business stakeholders to deliver integrated solutions. Support CI/CD processes, quality gates, and release management activities. Apply AI-assisted development tools and GenAI techniques responsibly to accelerate software delivery while maintaining governance, traceability, and security standards. Contribute to AI-enabled engineering practices, including LLM-assisted development, RAG concepts, and agent-based automation patterns. Promote engineering excellence, continuous improvement, and knowledge sharing across teams. Requirements: Strong hands-on experience with Java and Spring Boot in enterprise-scale environments. Experience building and maintaining production-grade microservices and distributed systems. Solid experience with relational databases ( Oracle and/or PostgreSQL ), including schema design, performance optimization, and transactional integrity. Strong testing background, including JUnit, Mockito, Testcontainers , API testing, and contract testing. Practical experience with CI/CD pipelines , quality gates, and code quality tools (e.g., Jenkins, GitLab, SonarQube, SAST/DAST). Good understanding of API design, RESTful services, messaging, and event-driven architectures. Experience contributing to technical design decisions and balancing business requirements with engineering best practices. Hands-on experience working with Google Cloud Platform (GCP) . Understanding of secure software development practices and operational readiness requirements. Practical exposure to GenAI tools and concepts , including LLMs and AI-assisted software development workflows. Strong communication skills and ability to work effectively within international, cross-functional teams. Nice to have: Experience delivering solutions within highly regulated financial services environments. Knowledge of cloud-native technologies, containers, Kubernetes, and service mesh architectures. Experience with observability platforms, resilience testing, and performance engineering. Hands-on experience implementing or integrating GenAI solutions such as RAG pipelines, prompt engineering, evaluation frameworks, or AI governance controls. Experience driving AI-enabled SDLC initiatives and engineering productivity improvements. Understanding of modern software delivery practices and platform engineering principles. What we offer: Opportunity to work on a strategic global banking transformation programme. Exposure to cutting-edge AI-enabled software engineering practices and cloud technologies. Collaboration with highly experienced international engineering and architecture teams. Long-term cooperation within a stable enterprise-scale environment. Private healthcare package (LuxMed). Multisport card. Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Full-time/B2B role for an experienced Java Developer to design, develop, and maintain microservices in a financial sector project. The position focuses on building high-quality backend solutions using modern Java and DevOps practices, with strong emphasis on TDD, CI, and system reliability. Hybrid work model with responsibility for both development and platform support. 🗂️ Requirements: 5+ years commercial experience in Java backend development, Experience designing and developing microservices, Proficiency in Java 17/21 and Spring Boot, Strong knowledge of PostgreSQL, Experience setting up and maintaining DevSecOps pipelines, Minimum 3 years working in Agile and/or DevOps teams, Experience with TDD using JUnit, Experience writing integration, regression, and Cucumber tests, Experience working with CI pipelines, Experience in incident resolution and system monitoring 📃 Skills: Java, SpringBoot, PostgreSQL, Microservices, DevSecOps, JUnit, Cucumber, CI, TDD, Agile, DevOps, TypeScript, Angular, HTML5 🏢 Description: For our Client we are looking for an experienced Java Developer who will be responsible for both the development and maintenance of the microservices. 📍 Location : Kraków, hybrid work model – 2 days per week in the office, 3 days remote 🕒 Cooperation model: [Full-time / B2B] 📍 Project for our Client from the financial sector Key Responsibilities: Design, build, and maintain efficient, reusable, and reliable Java code Contribute in all phases of the development lifecycle Adopt DevOps and Agile principles Ensure test-driven development and close collaboration with QA team members Focus on improving the development team velocity and quality Mentor and work with junior members of the team Support the platform: incident resolution, monitoring, problem management Develop automated tooling to improve support functions Requirements: 5+ years of commercial experience in backend development (Java) Designing and developing microservices using Java 17/21 and Spring Boot Strong knowledge of PostgreSQL and DevSecOps pipeline set up / maintenance Self-motivated and willing to learn new technologies and business domain 3+ years working in an Agile and/or DevOps team Excellent communication skills Use TDD with JUnit for unit tests, add integration and regression tests, and write simple Cucumber scenarios for end‑to‑end acceptance, all run in CI. Proven track record of working on significant projects from conception to completion, Ability to translate functional requirements into technical solutions, Should be able to provide innovative solutions to complex business problems Fluent English Experience in TypeScript, Angular, HTML 5 - nice to have Benefits: Private medical care (Luxmed) Multisport card Collaborative team culture and modern tech stack Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Software Engineer role focused on designing and developing microservices in a large-scale distributed system using Java 21 and Spring Boot. The position involves building event-driven solutions, applying Hexagonal Architecture, and delivering production-ready features in a CI/CD and Kubernetes environment. The team operates in an AI-first model, requiring daily use of Claude Code and strong ownership from analysis to deployment. 🗂️ Requirements: Strong hands-on experience with Java 21+, Solid experience with Spring Boot MVC, Practical experience with Apache Kafka, Experience with PostgreSQL and/or MongoDB, Knowledge of Hexagonal Architecture, Experience in microservices-based systems, Experience with event-driven architecture, Experience with Transactional Outbox pattern, Knowledge of OAuth2 and JWT, Experience with Spring Security, Experience with automated testing (unit, integration, contract), Experience with Docker and Kubernetes, Proficiency with Claude Code AI tool 📃 Skills: Java, Spring, SpringBoot, Kafka, PostgreSQL, MongoDB, JPA, Hibernate, R2DBC, Avro, Confluent, OAuth2, JWT, SpringSecurity, OpenFGA, Spock, Testcontainers, WireMock, RESTAssured, ArchUnit, PIT, Gradle, GitLabCI, Docker, Kubernetes, Helm, Micrometer, Prometheus, SonarQube, Checkstyle, ClaudeCode 🏢 Description: Senior Software Engineer — Java / Microservices Start date: ASAP | Contract type: B2B  (145-170pln) | Work mode: 100% Remote About the Team You'll be joining a multidisciplinary team of senior engineers within a Consumer & Merchant domain, working on end-to-end parcel creation flows and some of the company's largest technical initiatives. The team operates with high autonomy — engineers have real influence over architectural decisions and drive solutions from analysis all the way to production. The culture is built on knowledge sharing, mutual respect, and engineering excellence , with a genuinely friendly atmosphere. Your Responsibilities Design and implement microservices following Hexagonal Architecture principles within a large-scale distributed system Drive topic analysis and requirement discovery — from business needs to solution architecture and delivery Build and maintain event-driven integrations using Kafka, Avro, and the Transactional Outbox pattern Write comprehensive automated tests : unit, integration, contract (Spock, Testcontainers, Spring Cloud Contract) Participate actively in code reviews and help raise the bar on code quality Work in a CI/CD environment : GitLab CI, Docker, Kubernetes + Helm (GitOps) Use AI-assisted development tools (Claude Code is the team standard) as a primary daily productivity tool — agentic, AI-first development is how this team operates Tech Stack Language & Frameworks: Java 21, Spring Boot 3.x/4.x (MVC & WebFlux), Gradle Databases: PostgreSQL (JPA/Hibernate, R2DBC), MongoDB Messaging: Apache Kafka + Avro + Confluent Schema Registry Patterns: Hexagonal Architecture, Microservices, Event-Driven Design, Transactional Outbox Security: OAuth2 / JWT, Spring Security, OpenFGA Testing: Spock Framework, Testcontainers, WireMock, REST-Assured, ArchUnit, PIT Mutation Testing Infrastructure: GitLab CI, Docker, Kubernetes + Helm (GitOps) Observability: Micrometer, Prometheus, SonarQube, Checkstyle AI Tooling: Claude Code (mandatory) / GitHub Copilot / Cursor Requirements Must have: Strong, hands-on experience with Java 21+ and Spring Boot MVC Solid knowledge of Kafka , PostgreSQL and/or MongoDB Familiarity with Hexagonal / Clean Architecture erns:** Hexagonal Architecture, Microservices, Event-Driven Design, Transactional Outbox Security: OAuth2 / JWT, Spring Security, OpenFGA Testing: Spock Framework, Testcontainers, WireMock, REST-Assured, ArchUnit, PIT Mutation Testing Infrastrucy proficiency with AI coding tools — Claude Code** is the team standard; experience with agentic development workflows is a strong plus Nice to have: Experience with Spring WebFlux (reactive stack) Familiarity with OpenFGA or similar fine-grained authorisation systems Background in Consumer-Driven Contract testing (Spring Cloud Contract) What Makes This Role Challenging Complex distributed system — dozens of microservices with numerous communication channels; understanding the big picture is as important as writing good code Near-100% uptime requirement — business-critical systems where reliability and fault tolerance are non-negotiable High autonomy from day one — independently analyse topics, identify stakeholders, and deliver solutions end-to-end AI-first way of working — using Claude Code and agentic workflows to accelerate delivery is a core part of how the team operates, not a nice-to-have Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Java Engineer role focused on developing and maintaining claims handling systems in the insurance sector using microservices and monolithic architecture. The position involves backend development, architecture design, test automation, performance optimization, and AI-assisted SDLC improvements in a hybrid work model. 🗂️ Requirements: Java, Apache Kafka, Spring, Spring Boot, Spring Cloud, Hibernate, SQL, Git, Maven, JUnit, Mockito, FP, OOP, Docker, Kubernetes, Helm, RabbitMQ, Elasticsearch, Application scaling, Performance diagnostics, AI tools in SDLC 📃 Skills: Java, Kafka, Spring, Hibernate, SQL, Git, Maven, JUnit, Mockito, Docker, Kubernetes, Helm, RabbitMQ, Elasticsearch 🏢 Description: 📍 Lokalizacja: Warszawa (model hybrydowy - 1 dzień w tygodniu w biurze) 📄 Umowa B2B: 150–170 zł/h 🏦 Branża: ubezpieczenia Poszukujemy doświadczonego Senior Java Engineera , który dołączy do zespołu rozwijającego kluczowe systemy dla obszaru zgłaszania i obsługi szkód. Pracujemy nad nowoczesną platformą łączącą architekturę mikrousługową i monolityczną, stale usprawniając procesy biznesowe oraz wdrażając automatyzację i narzędzia AI wspierające SDLC. Zakres obowiązków Rozwój mikrousług oraz elementów monolitu dla systemów obsługi szkód. Projektowanie architektury z wykorzystaniem nowoczesnych wzorców i technologii. Usprawnianie procesów biznesowych poprzez automatyzację i optymalizację. Budowa piramidy testów automatycznych – od testów jednostkowych po integracyjne. Code review – wykonywanie i odbieranie. Udział w wydarzeniach scrumowych i współpraca w dojrzałym, wielowolumetrycznym środowisku. Adopcja narzędzi AI w procesie wytwarzania oprogramowania. Wymagania (must have) Java. Apache Kafka. Bardzo dobra znajomość Spring, Spring Boot, Spring Cloud, Hibernate . Bardzo dobra znajomość SQL. Znajomość git , maven , frameworków testowych (JUnit, Mockito). Znajomość paradygmatów FP i OOP . Doświadczenie z Docker, Kubernetes, Helm, RabbitMQ, Elasticsearch . Umiejętność skalowania aplikacji i diagnozowania wydajności. Umiejętność odpowiedzialnej adopcji narzędzi AI w SDLC. Wymagania (nice to have) Doświadczenie w obszarze IT Security. Umiejętność samodzielnego projektowania domeny. Oferujemy Pracę w dojrzałym środowisku technologicznym, gdzie jakość ma realne znaczenie. Wpływ na kierunek technologiczny i rozwój systemów. Możliwość pracy z nowoczesnymi narzędziami, podejściami i AI-assisted development. Współpracę z doświadczonymi inżynierami i architektami. Pakiet benefitów: pakiet Luxmed oraz karta Multisport. Co zyskasz dzięki aplikacji na ofertę Antal? Gdy Twoja aplikacja zostanie rozpatrzona pozytywnie (zostaniesz zaproszony/a do procesu), otrzymasz wsparcie Konsultanta/Konsultantki, który/a utrzyma z Tobą stały kontakt (mailowo lub telefonicznie), pomoże Ci przygotować się do rozmowy rekrutacyjnej z przyszłym pracodawcą oraz zatroszczy się o jakość procesu rekrutacyjnego, w którym aktualnie bierzesz udział. Kim jesteśmy? Jesteśmy liderem rekrutacji specjalistów i menedżerów oraz doradztwa w obszarze HR. Marka obecna jest w 35 krajach, w Polsce działa od 1996 roku. Przez ten czas zbudowaliśmy wiele karier kandydatów, dzięki elastycznemu i kompleksowemu podejściu do wszystkich rekrutacji. Antal tworzy ponad 130 profesjonalnych konsultantów ds. rekrutacji, którzy są oni nie tylko skutecznymi rekruterami, ale także wykwalifikowanymi doradcami, specjalizującymi się zarówno w zakresie wybranego sektora, jak i stanowiska. Sprawdź inne aktualne oferty pracy na: https://antal.pl/dla-kandydata Zaobserwuj nasz profil na LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior Java Full Stack Developer role focused on developing and supporting a global platform within a distributed engineering environment. The position combines backend and frontend development with DevOps and production support responsibilities. It involves ownership of application enhancements, incident resolution, and end‑to‑end service stability. 🗂️ Requirements: Strong experience with Java 21, Strong experience with Spring Boot 3.x, Experience with microservices architecture, Experience with REST APIs and JSON, Frontend development experience with React JS, Knowledge of PostgreSQL, Experience with messaging systems (MQ or Solace), Working knowledge of Kubernetes, Working knowledge of Redis, Understanding of application security principles, Experience with observability tools, Experience with DevOps tools, Ability to work in DevOps model across development and support, Experience in production support and incident resolution 📃 Skills: Java, Spring, Microservices, REST, JSON, React, PostgreSQL, MQ, Solace, Kubernetes, Redis, Grafana, Splunk, Logstash, Prometheus, OpenTelemetry, Zipkin, Jenkins, Ansible 🏢 Description: Senior Java Full Stack Developer 📍 Location: Kraków, Poland (hybrid: 2 days in the office , 3 days remote) 📄 B2B Contract: 190 – 230 PLN / hour We are looking for a Senior Java Full Stack Developer to join the Global HMS engineering team within Markets & Securities Services IT. In this role, you will contribute to the development and support of a key global platform, working closely with business stakeholders and distributed engineering teams. You will take ownership of application enhancements, production stability, and end‑to‑end support activities, ensuring high service quality and timely delivery. This position is ideal for someone who enjoys combining hands‑on development with operational responsibility, thrives in a global environment, and is comfortable working across backend, frontend, DevOps, and support streams. Key Responsibilities: Deliver application enhancements and provide day‑to‑day support within a global engineering setup. Collaborate with business stakeholders to plan and execute deliveries, ensuring milestones are met. Lead and resolve critical production incidents, driving fixes through to completion. Own end‑to‑end production support: handling tickets, queries, and operational requests. Diagnose and resolve application issues to maintain performance, reliability, and usability. Create and maintain technical documentation, best‑practice guidelines, and process artefacts. Act as an SME for service functionality, constraints, and operational considerations. Identify and escalate risks, issues, and dependencies during agile delivery. Continuously develop skills through training, certifications, and hands‑on learning. Requirements: Strong experience with Java 21 , Spring Boot 3.x , microservices , REST APIs , JSON . Frontend experience with React JS . Solid understanding of PostgreSQL and messaging technologies ( MQ/Solace ). Working knowledge of Kubernetes , Redis , and application security principles. Exposure to observability and DevOps tooling: Grafana , Splunk , Logstash , Prometheus , OpenTelemetry , Zipkin , Jenkins , Ansible . Strong communication skills and ability to collaborate across distributed teams. High responsiveness and ownership mindset, especially in production support contexts. Ability to produce clear, concise documentation and technical deliverables. Comfortable working in a DevOps model, contributing across analysis, testing, and support. Nice to Have: Basic Python , Activiti (workflow engine), JMock/Mockito , shell scripting. Experience with Selenium or Serenity . Background in workflow‑based applications. What We Offer: Long‑term cooperation in a global engineering environment. Real influence on service quality, operational stability, and delivery processes. Work in a multicultural, distributed team. Private medical care (LuxMed) and Multisport card. Hybrid model: 2 days per week in the Kraków office . Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.

🏢 Summary: Experienced Java Developer role focused on developing and maintaining microservices for trading systems in the financial sector. The position involves building high-availability solutions, supporting credit and IR derivatives trading workflows, and contributing to DevOps, monitoring, and infrastructure improvements in a hybrid work model. 🗂️ Requirements: 7+ years of Java back-end development experience, Experience with RESTful APIs, Experience with microservices architecture, Knowledge of high-availability service architecture, Experience with SQL, Experience with PostgresSQL or Sybase, Basic database performance knowledge, Hands-on experience with AI tooling and models, Experience leading delivery of Java-based services or modules, Strong analytical and problem-solving skills, Fluent English 📃 Skills: Java, REST, Microservices, SQL, PostgresSQL, Sybase, DevOps, AI 🏢 Description: For our Client we are looking for an experienced Java Developer who will be responsible for both the development and maintenance of the microservices. 📍 Location : Kraków, hybrid work model – 2 days per week in the office, 3 days remote 🕒 Cooperation model: [Full-time / B2B] 📍 Project for our Client from the financial sector Key Responsibilities: Build high-end solutions using market-leading technologies across the trading stack Application Specialist role for front to back system for Credit derivatives and IR derivatives trading Propose and deliver sustainable tooling infrastructure for the application including but not limited to DevOps, infrastructure, release management, resiliency and monitoring Contribute to new age tooling and improvisation of existing tech stack and process Understand department’s design principles, represent application in design review forums and interact with IT management and department engineering / tooling forums Enable real-time risk management capabilities for Credit VS trading workflows Requirements: 7+ years’ experience in Java back-end development with RESTful API, Java, micro-services Good sense and experience in high-availability service architecture Good experience in SQL and at least one main stream database (Postgres SQL or Sybase), with basic knowledge in database performance Hands on with AI tooling and models in day to day Experience of owning or leading the delivery a Java-based service / module Strong analytical thinking and problem solving capability Fluent English Benefits: Private medical care (Luxmed) Multisport card Collaborative team culture and modern tech stack Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Backend engineering role focused on designing, developing, and deploying scalable microservices-based applications in a continuous delivery environment. The position involves building production-ready systems, contributing to architecture decisions, and ensuring high performance and maintainability. The role requires close collaboration within globally distributed teams to deliver high-quality digital solutions. 🗂️ Requirements: Proven experience in backend software engineering, Hands-on experience with microservices architecture, Experience delivering production-ready applications, Experience with continuous delivery and frequent releases, Experience building and maintaining RESTful APIs, Strong experience with PostgreSQL including schema design and optimization 📃 Skills: Backend, Microservices, REST, PostgreSQL, SQL, ContinuousDelivery, APIs 🏢 Description: Location: Kraków Work mode: hybrid with 6-8 days/month from the office Salary: up to 200 PLN/h + VAT on B2B contract About the Team: You will join a globally distributed engineering team focused on building scalable, high-quality digital solutions using modern technologies and microservices architecture. The team emphasizes collaboration, continuous delivery, engineering excellence, and innovation, working closely with stakeholders across regions to deliver impactful business outcomes. Key Responsibilities: Design, develop, and deploy high-quality, production-ready code within a microservices-based architecture. Contribute to system architecture and technical design decisions, ensuring scalability, performance, and maintainability. Maintain awareness of business objectives alongside engineering and non-functional requirements to support product growth. Promote and uphold strong engineering culture, including best practices, code quality, and continuous improvement. Collaborate closely with globally distributed teams, coordinating across multiple regions and time zones. Proactively identify and remove delivery impediments, manage risks, and communicate issues to program stakeholders. Analyze development and delivery processes to identify inefficiencies and implement innovative, automated solutions. Required Experience & Skills: Strong background in software engineering with proven expertise in designing, developing, and deploying backend applications. Hands-on experience working with microservice architectures and delivering production-ready solutions. Demonstrated ability to deliver frequent, high-quality releases in a continuous delivery environment. Experience building and maintaining RESTful APIs in production systems. Solid experience working with PostgreSQL databases, including schema design and optimization. Preferred Qualifications: Proficiency in Java, ideally with recent experience using modern versions. Understanding of containerization and orchestration technologies such as Docker and Kubernetes, as well as cloud platforms (preferably GCP). Experience developing modern frontend applications using ReactJS. Previous experience working in the financial services sector, particularly in banking environments. This role is ideal for a proactive and delivery-focused engineer who thrives in a collaborative, fast-paced environment and is passionate about building scalable, modern applications. Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams. Discover our latest job openings: https://en.antal.pl/candidates Follow us on LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Oferta dla Senior Java Developera przy rozwoju nowoczesnych platform OTT i eCommerce w architekturze mikroserwisowej. Praca obejmuje projektowanie i rozwój aplikacji Java, udział w projektowaniu architektury oraz współpracę w metodyce Nexus Scrum z zespołami developerskimi i QA. Projekt oferuje długofalową współpracę B2B, elastyczny model pracy oraz wykorzystanie nowoczesnych technologii i narzędzi. 🗂️ Requirements: Minimum 4 lata komercyjnego doświadczenia w Java, Znajomość Java 8–25, Bardzo dobra znajomość wielowątkowości, Znajomość niemutowalności i wzorców projektowych, Doświadczenie ze Spring Boot, Doświadczenie ze Spring MVC i Spring WebFlux, Znajomość MyBatis i TestContainers, Doświadczenie z SQL i NoSQL, Znajomość Oracle, PostgreSQL, MongoDB i Redis, Doświadczenie z Apache Kafka, Znajomość ORM, Doświadczenie z mikroserwisami i REST API, Znajomość Docker i Kubernetes, Znajomość SOA i SSO, Doświadczenie z Okta, CAS lub IAM, Znajomość JUnit, Mockito i Spock, Doświadczenie z testami wydajnościowymi, Znajomość Git, Jenkins i GitLab CI, Doświadczenie z Jira i Confluence, Komunikatywny język angielski 📃 Skills: Java, Spring, SpringBoot, SpringMVC, WebFlux, MyBatis, TestContainers, SQL, NoSQL, Oracle, PostgreSQL, MongoDB, Redis, Kafka, ORM, Microservices, REST, Docker, Kubernetes, SOA, SSO, Okta, CAS, IAM, JUnit, Mockito, Spock, JMeter, K6, Git, Bitbucket, GitLab, Jenkins, Jira, Confluence, AWS, EC2, S3, Lambda, CloudWatch, MSK, Linux, Unix, Bash, Python, HTML, CSS, JavaScript, Angular, React, Vue 🏢 Description: Senior Java Developer (k/m) 📍 Warszawa / hybrydowo (1–3 dni w biurze preferowane) 🕒 B2B | full time | Długofalowa współpraca 130-150PLN netto/h O projekcie Poszukujemy doświadczonego Senior Java Developera , który dołączy do zespołu rozwijającego nowoczesne produkty OTT oraz eCommerce . Będziesz pracować w zespole doświadczonych Java Developerów, wspólnie z Frontend Developerami oraz QA, rozwijając rozwiązania w metodyce Nexus Scrum . Zakres obowiązków projektowanie i rozwój aplikacji w technologii Java, implementacja nowych funkcjonalności oraz rozwój istniejących systemów, udział w projektowaniu architektury rozwiązań, przeprowadzanie code review i dbanie o wysoką jakość kodu, wsparcie techniczne oraz konsultacje dla innych zespołów, tworzenie dokumentacji technicznej w Confluence, realizacja zadań z wykorzystaniem Jira, współpraca z zespołem programistów, testerów oraz analityków. Wymagania Java minimum 4 lata komercyjnego doświadczenia w programowaniu w Java (wersje 8–25), bardzo dobra znajomość zagadnień związanych z wielowątkowością, znajomość niemutowalności oraz wzorców projektowych. Frameworki Spring Boot, Spring MVC, Spring WebFlux, MyBatis, TestContainers. Bazy danych i integracja SQL i NoSQL, Oracle, PostgreSQL, MongoDB, Redis, Apache Kafka, doświadczenie z ORM. Architektura mikroserwisy, REST API, Docker, Kubernetes, SOA, rozwiązania SSO (Okta, CAS, IAM). Testowanie JUnit, Mockito, Spock, doświadczenie we współpracy przy testach wydajnościowych (JMeter, K6). CI/CD i narzędzia Git (Bitbucket, GitLab), Jenkins, GitLab CI / GitLab Pipelines, Jira, Confluence. Dodatkowym atutem będzie znajomość OWASP i zasad bezpieczeństwa aplikacji, doświadczenie z AWS (IAM, EC2, S3, Lambda, API Gateway, CloudWatch, MSK), znajomość systemów Linux/Unix, umiejętność tworzenia skryptów Bash lub Python, znajomość praktyk DevOps, doświadczenie w tworzeniu dokumentacji technicznej, podstawowa znajomość HTML, CSS, JavaScript oraz Angular, React lub Vue.js. Poszukujemy osoby, która potrafi analizować wymagania i proponować optymalne rozwiązania, jest samodzielna i odpowiedzialna za dostarczane rozwiązania, dba o jakość kodu i dobre praktyki programistyczne, dobrze odnajduje się w pracy zespołowej, komunikuje się w języku angielskim na poziomie umożliwiającym współpracę w projekcie. Oferujemy udział w rozwoju nowoczesnych produktów cyfrowych, pracę z wykorzystaniem aktualnych technologii i nowoczesnej architektury, współpracę z doświadczonym zespołem specjalistów, realny wpływ na rozwój projektów i stosowanych rozwiązań, elastyczny model pracy – zdalnie lub hybrydowo (preferowana obecność w biurze w Warszawie 1–3 razy w tygodniu), długofalową współpracę, rozpoczęcie współpracy od połowy lipca lub na początku sierpnia. Benefity: Karta Multisport oraz Luxmed Jeżeli chcesz pracować przy rozwoju nowoczesnych platform cyfrowych, cenisz wysoką jakość kodu oraz lubisz współtworzyć rozwiązania oparte o architekturę mikroserwisową – zapraszamy do aplikowania. Co zyskasz dzięki aplikacji na ofertę Antal? Gdy Twoja aplikacja zostanie rozpatrzona pozytywnie (zostaniesz zaproszony/a do procesu), otrzymasz wsparcie Konsultanta/Konsultantki, który/a utrzyma z Tobą stały kontakt (mailowo lub telefonicznie), pomoże Ci przygotować się do rozmowy rekrutacyjnej z przyszłym pracodawcą oraz zatroszczy się o jakość procesu rekrutacyjnego, w którym aktualnie bierzesz udział. Kim jesteśmy? Jesteśmy liderem rekrutacji specjalistów i menedżerów oraz doradztwa w obszarze HR. Marka obecna jest w 35 krajach, w Polsce działa od 1996 roku. Przez ten czas zbudowaliśmy wiele karier kandydatów, dzięki elastycznemu i kompleksowemu podejściu do wszystkich rekrutacji. Antal tworzy ponad 130 profesjonalnych konsultantów ds. rekrutacji, którzy są oni nie tylko skutecznymi rekruterami, ale także wykwalifikowanymi doradcami, specjalizującymi się zarówno w zakresie wybranego sektora, jak i stanowiska. Sprawdź inne aktualne oferty pracy na: https://antal.pl/dla-kandydata Zaobserwuj nasz profil na LinkedIn: https://www.linkedin.com/company/antalpoland

🏢 Summary: Senior-level role focused on designing and modernizing microservice-based banking platforms supporting customer onboarding and KYC processes. The position combines hands-on Java development with architectural influence and technical leadership in a regulated, production-critical environment. You will drive end-to-end delivery of scalable backend systems and shape engineering standards across global applications. 🗂️ Requirements: Strong backend engineering experience in complex production environments, Proven experience designing and evolving microservice architectures, Experience delivering frequent and reliable production releases, Deep understanding of non-breaking change principles in RESTful APIs, Solid commercial experience with Java (Java 17+), Experience designing and managing PostgreSQL schemas, Experience influencing architecture or technical design decisions, Experience owning services or components end-to-end 📃 Skills: Java, Microservices, REST, PostgreSQL, APIs, Architecture, SpringBoot, SQL 🏢 Description: Senior Software Engineer (Java / Microservices) Corporate & Institutional Banking Client Services 📍 Hybrid working model Kraków : up to 5 days per month from the office Warsaw : up to 3 days per month from the office Other locations in Poland : 1 day per month or 3 days per quarter Your career opportunity Within Corporate and Institutional Banking Client Services , we are building in-house engineering platforms that support customer onboarding and KYC / Customer Due Diligence processes at global scale. This role is intended for an experienced senior engineer , operating close to a technical leadership level — someone who already influences architecture, delivery standards, and engineering culture , even if they have not formally held a Lead title. You will be part of a senior engineering group responsible for modernizing legacy systems , designing microservice-based architectures , and setting the technical direction for business-critical CIB applications. What you’ll do Work closely with CIB Client Services Engineering Leadership , contributing to architectural and technical decisions across Customer Due Diligence platforms Design and build microservice-based solutions , partnering with Product and Business teams to assess impact, complexity, and risk of change Lead by example as a hands-on engineer, delivering high-quality code to production at high cadence Take ownership beyond implementation — proactively identifying risks, technical debt, and improvement opportunities Own changes end-to-end : from early business discussions and design, through development and testing, to production release and support Act as a technical reference point for other engineers, supporting best practices, code quality, and non-breaking change principles Promote and embed strong engineering standards and culture across the team in a global, regulated environment What you need to succeed in this role Strong hands-on experience in backend software engineering, delivering production systems in complex environments Proven experience designing and evolving microservice architectures , with frequent and reliable production releases Deep understanding of non-breaking change principles , especially in the design of RESTful APIs Solid, recent experience with Java (preferably Java 17+) Experience designing and managing PostgreSQL schemas in production systems Exposure to technical leadership responsibilities , such as: influencing architecture or design decisions mentoring or guiding other engineers owning complex components or services end-to-end Ability to operate autonomously, make sound technical decisions, and communicate effectively with both engineers and non-technical stakeholders Experience delivering microservices without heavy frameworks (e.g. Spring Boot) is a strong advantage Prior experience in banking or financial services is a plus, but not required Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams.