April 8, 2026
Senior Java Developer
Senior • Remote
170 - 180 PLN/hr
Warsaw, Poland
Hays IT Contracting is a cooperation based on B2B rules. We connect IT specialists with the most interesting, technological projects on the market.
Join the group of 500 satisfied Contractors working for Hays’ clients!
For our Client we are currently looking for Candidates for the position of:
Senior Java Developer
Job type: B2B (with Hays Poland)
Location: 100% remote
Length: long term project
Start date: ASAP / 1 month notice period is ok
Rate: 170-180zł/h
We’re looking for a Java Developer with strong DevOps skills and hands on experience running workloads on Red Hat OpenShift. You will build Java microservices, automate delivery pipelines, and help maintain reliable, secure, and observable cloud native platforms
Key Responsibilities:
· Develop and maintain Java microservices (Spring Boot) integrating with databases, APIs, and Kafka/AMQ.
· Containerize applications (Docker/S2I) and optimize images for performance and security.
· Deploy and operate services on OpenShift (deployments, routes, services, config/secrets, operators).
· Build CI/CD using Tekton and manage GitOps flows via Argo CD.
· Implement observability: logs, metrics, alerts (Prometheus, Grafana, Loki/EFK).
· Automate tasks using Bash, PowerShell, Python, oc CLI, Helm/Kustomize.
· Apply DevSecOps practices: image & dependency scanning (Trivy, Clair, Snyk), RBAC, secure coding.
· Tune JVM and troubleshoot performance issues in containerized workloads.
Must Have Skills
· Strong Java & Spring Boot experience.
· Practical experience with OpenShift and containerization.
· CI/CD knowledge (Tekton, Maven/Gradle, GitOps/Argo CD).
· Familiarity with observability tools and cloud native troubleshooting.
· Understanding of DevSecOps and automation scripting.
Nice to Have
Java Certifications:
· Oracle Certified Professional (OCP) – Java SE 11 or 17
· Oracle Certified Associate (OCA) – Java SE
Cloud Native & Container Certifications:
· Red Hat OpenShift Developer (DO288)
· Red Hat Certified Specialist in OpenShift Administration (EX280)
· Kubernetes certifications: CKA / CKAD / CKS
What will you get:
· Long-term cooperation with the client implementing projects for the largest players in the banking, insurance, telco and more sectors
· Fast recruitment process - one meeting
· Standard benefits - preferential rates for LuxMed and Multisport packages
· When you choose to work via Hays, you also get the opportunity to work for many of Hays' other leading clients in the future
What will the recruitment process look like:
1. Your CV will be verified by Hays Recruiter
2. Recruiter will contact you by phone - a 15-minute conversation about the project and your experience
3. 2 stages of interview with Client, via Teams
4. Offer
5. Welcome to the project!
Hays Poland sp. z o.o. is an employment agency registered in a registry kept by Marshal of the Mazowieckie Voivodeship under the number 361.
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Warsaw, Poland
130 - 160 PLN/hr
🏢 Summary: Long-term B2B contract for a Senior Java Developer to design, build and maintain backend applications and microservices using Spring Boot, with strong focus on system architecture, integrations and cloud environments. The role involves developing REST and asynchronous communication, working with SQL databases, containerization and CI/CD pipelines. Fully remote or hybrid work model available. 🗂️ Requirements: Commercial experience in backend development with Java 11+, Strong knowledge of Java and Spring Framework, Experience in designing and developing microservices, Experience with REST API and asynchronous communication (Kafka, MQ), Practical knowledge of SQL databases (Oracle or PostgreSQL), Experience with Git and CI/CD pipelines, Experience with Docker and Kubernetes, Experience working in Linux environments, Experience with cloud platforms, Ability to write unit and integration tests, Experience working in Agile/Scrum, English proficiency for technical communication 📃 Skills: Java, Spring, SpringBoot, REST, Kafka, MQ, Oracle, PostgreSQL, SQL, Git, CI/CD, Docker, Kubernetes, Linux, Cloud, HTTP, JSON 🏢 Description: Senior Java Developer poszukiwany(-a)! Lokalizacja: 100% zdalnie / hybrydowo (Warszawa/Wrocław/Kraków - do ustalenia) Forma współpracy: B2B Wynagrodzenie (B2B): do 160 zł/h netto + VAT Start: do uzgodnienia Czas trwania projektu: długofalowa współpraca Obowiązki Projektowanie, rozwój i utrzymanie aplikacji backendowych w Javie z wykorzystaniem Spring Framework / Spring Boot Projektowanie i implementacja mikroserwisów oraz komunikacji pomiędzy nimi (REST, integracje asynchroniczne) Tworzenie i utrzymanie szablonów mikroserwisów, bibliotek oraz komponentów platformowych Integracja systemów z wykorzystaniem narzędzi kolejkowych ( Kafka, MQ ) Praca z bazami danych ( Oracle, PostgreSQL ) Udział w projektowaniu architektury systemów oraz doborze technologii Wdrażanie i utrzymanie rozwiązań w różnych środowiskach chmurowych Pisanie testów jednostkowych i integracyjnych , przeprowadzanie code review Monitorowanie i optymalizacja wydajności systemów Tworzenie i promowanie standardów technicznych oraz dobrych praktyk Wsparcie zespołów produktowych (mentoring, przeglądy kodu) Współpraca z zespołami frontend, QA, DevOps Praca w metodyce Agile Wymagania Komercyjne doświadczenie w tworzeniu aplikacji backendowych w Javie (Java 11+) Bardzo dobra znajomość Java oraz Spring Framework / Spring Boot Doświadczenie w projektowaniu i rozwoju mikroserwisów Znajomość REST API , HTTP/JSON oraz komunikacji asynchronicznej ( Kafka, MQ ) Praktyczna znajomość baz danych SQL (np. Oracle, PostgreSQL), mile widziane NoSQL Doświadczenie z Git , CI/CD oraz narzędziami developerskimi Znajomość Docker i Kubernetes oraz pracy w środowisku Linux Doświadczenie w pracy z platformami chmurowymi Umiejętność tworzenia wydajnych i jakościowych rozwiązań , dbałość o standardy kodu Doświadczenie w pracy w metodykach Agile / Scrum Samodzielność, dobra organizacja pracy i umiejętności komunikacyjne Znajomość języka angielskiego na poziomie umożliwiającym swobodną komunikację Mile widziane: doświadczenie z technologiami front-end, np. Angular, React Nie zwlekaj i zaaplikuj już teraz! Nr ref.: 58/12/2025/MB/2997
Technology
ITDS
Senior Java Developer
Senior
Hybrid
Warsaw, Poland
21,000 - 25,200 PLN
🏢 Summary: Senior Java Developer role focused on designing, implementing, and maintaining scalable and secure solutions within a complex payment terminal ecosystem. The position involves working with distributed systems, message queues, and legacy code while enhancing system performance and reliability. The role requires strong backend expertise and collaboration on integration and automated testing initiatives. 🗂️ Requirements: Minimum 4 years of Java development experience, Strong object-oriented programming skills, Proficiency in Java 8+, Experience with Spring and Spring Boot, Experience with Hibernate or JPA, Experience with JEE, Practical experience with RabbitMQ or other message queues, Experience with Maven, Git, Gitlab, Jenkins, Nexus, Jira, Strong knowledge of Oracle or other relational databases, Experience in RESTful API design and system integration, Experience with distributed systems, Experience with JBoss or WildFly, Experience with Hazelcast or cache technologies, Ability to create and maintain automated tests, Good command of English (B2 level), Legal right to work in the European Union 📃 Skills: Java, Spring, SpringBoot, Hibernate, JPA, JEE, RabbitMQ, Maven, Git, Gitlab, Jenkins, Nexus, Jira, Oracle, SQL, REST, JBoss, WildFly, Hazelcast 🏢 Description: Warsaw-based opportunity with hybrid work model (4 days from the office / week) As a Senior Java Developer , you will be working for our client, a leader in managing a complex payment terminal ecosystem that connects thousands of devices across multiple vendors. You will play a pivotal role in designing and implementing cutting-edge IT solutions to enhance the system’s performance, security, and scalability, driving the future of financial transactions. Your main responsibilities: Design and implement IT solutions based on analytical and technical documentation Review analytical documentation and create comprehensive technical documentation Conduct technical upgrades and work with legacy code to maintain system integrity Perform reverse engineering using existing source code and documented business processes Define and build test cases for automated testing frameworks Collaborate on system integration tasks involving distributed systems and message queues Support ongoing system improvements and security assessments, including vulnerability scans You're ideal for this role if you have: At least 4 years of experience in Java development, with strong object-oriented programming skills In-depth knowledge of Java 8+ and frameworks such as Spring, Spring Boot, Hibernate/JPA, and JEE Practical experience with message queue systems, especially RabbitMQ Familiarity with tools like Maven, Git, Gitlab, Jenkins, Nexus, and Jira supporting software development Solid understanding of relational databases, particularly Oracle Hands-on experience with RESTful API design and system integration Experience working with distributed systems, application servers (JBoss/WildFly), and cache technologies (Hazelcast) Knowledge of security scanning tools like Fortify or Sonatype is a plus Good command of English (B2 level) and excellent communication skills It is a strong plus if you have: Additional certifications in Java or cloud technologies Experience with microservices architecture and containerization (e.g., Docker, Kubernetes) Language Required for the role: Good command of English (Communicative level) Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. We offer you: ITDS Business Consultants is involved in various, innovative, and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people. The offer includes: Stable and long-term cooperation with very good conditions Enhance your skills and develop your expertise in the financial industry Work on the most strategic projects available in the market Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years Participation in Social Events, training, and work in an international environment Access to an attractive Medical Package Access to Multisport Program #GETREADY Internal job ID #9111 You can report violations in accordance with ITDS’s Whistleblower Procedure available here . #MAKEYourCareerBETTER
Technology
RITS Professional Services
Senior Java / Full-Stack Software Developer
Senior
Remote
Warsaw, Poland
150 - 180 PLN/hr
🏢 Summary: Senior Java / Full-Stack Developer role focused on designing, implementing, and maintaining modern applications within a mature software architecture. The position involves backend development in Java, frontend work with modern frameworks, and participation in the full software lifecycle in an agile environment. Optional responsibilities include software architecture design, CI/CD pipeline development, and technical leadership. 🗂️ Requirements: Degree in Computer Science or equivalent professional experience, Strong professional experience in modern application development, Very good knowledge of Java and backend web services, Experience with relational and transactional databases, Experience with automated unit or integration testing, Practical experience with agile methodologies, Familiarity with Git or SVN and collaboration tools like Jira and Confluence, Solid understanding of architecture standards and best practices, English proficiency at minimum B2 level 📃 Skills: Java, SQL, REST, Angular, React, Git, SVN, Jira, Confluence, CI/CD, Cloud, JUnit, API, Databases 🏢 Description: We are looking for a Senior Java / Full-Stack Software Developer ! We offer: Salary: 150-180 PLN net/hour on B2B. Remote work from Poland. Responsibilities: · Design and implement new features and requirements in Java · Integrate solutions into an existing, mature software architecture · Participate in all phases of the software lifecycle: Planning and technical conception Implementation and testing Maintenance and operational support · Ensure quality, stability, and maintainability of the software · Develop backend components (Java, databases, services, APIs) · Contribute to modern frontend development (e.g. Angular, React) · Actively collaborate within an agile, cross-functional team · Apply architectural standards, best practices, and clean code principles Optional: Architecture Responsibilities (Senior / Architect Track) Depending on experience and interest, you may additionally: · Design and further develop the overall software architecture · Select appropriate frameworks, tools, and cloud solutions · Take responsibility for complex systems and end-to-end solutions · Shape CI/CD pipelines and technical standards · Act as a technical point of contact and mentor for the team We are looking for: · Degree in (Business) Computer Science, or vocational training as IT Specialist, or comparable professional experience · Strong professional experience in developing modern applications · Very good knowledge of Java, including backend and web services · Experience with relational and transactional databases · Experience with automated tests (unit and/or integration tests) · Practical experience with agile development methodologies · Familiarity with version control and collaboration tools (e.g. Git/SVN, Jira, Confluence, common IDEs) · Solid understanding of architecture standards and best practices · English language skills (written and spoken), minimum B2 · Ability to work independently · Team-oriented mindset and customer-focused thinking Nice to Have: · Experience with Angular, React, or similar frontend frameworks · Exposure to financial systems or securities trading · Experience with CI/CD pipelines and cloud-based architectures · Background in long-lived enterprise or regulated systems Ta rola nie jest dla Ciebie, ale masz znajomego, który by się sprawdził? Poleć go i zgarnij nawet 5000 zł. Referral Program: Talent from your network Don't hesitate and apply now!
Technology
ITDS
Senior Java Developer
Senior
Hybrid
Warsaw, Poland
21,000 - 25,200 PLN
🏢 Summary: Senior Java Developer role focused on building scalable REST APIs and advanced backend systems using modern Java and Spring technologies. The position involves designing, developing, and testing secure enterprise solutions in a hybrid work model. It offers the opportunity to contribute to large-scale digital transformation initiatives. 🗂️ Requirements: 5+ years of professional experience in Java development, Strong expertise in Java 17+, Strong expertise in Spring Boot 3/4+, Experience with Git, Kubernetes, Jenkins, Flyway, RabbitMQ, and PostgreSQL, Experience in building and securing REST APIs, Ability to perform unit and integration testing, Ability to analyze requirements and translate them into technical solutions, Fluent English (written and spoken), Legal right to work in the European Union, Availability to work in a hybrid model (up to 2 remote days per week) 📃 Skills: Java, Spring, SpringBoot, Git, Kubernetes, Jenkins, Flyway, RabbitMQ, PostgreSQL, REST, UnitTesting, IntegrationTesting, Architecture, Security, English 🏢 Description: Unleash innovation with scalable enterprise solutions — shape the future of digital transformation! Warsaw-based opportunity with hybrid work model (up to 2 remote days per week). As a Senior Java Developer , you will be working for our client, a leading player in the technology industry committed to delivering cutting-edge software solutions. You will contribute to building robust, scalable REST APIs and advanced backend systems, empowering organizations to transform their digital landscapes and drive business success. This is your chance to grow your career at the forefront of technological innovation. Your main responsibilities: Analyze requirements and convert them into comprehensive technical tasks, supporting the development process. Propose and challenge technical solutions to ensure optimal implementation. Develop functionalities in Java 17+ using Spring Boot 3/4+ in line with architectural and security standards. Conduct thorough unit and integration testing to ensure code quality. Create and update technical and architectural documentation for ongoing project clarity. Share knowledge with team members to foster continuous learning and improvement. Stay updated on technological advancements and suggest innovative enhancements. You're ideal for this role if you have: 5+ years of professional experience in Java development or relevant fields. Strong expertise in Java 17+ and Spring Boot (version 3 or 4+). Experience with Git, Kubernetes, Jenkins, Flyway, RabbitMQ, and PostgreSQL. Proven ability to analyze complex requirements and translate them into technical solutions. Solid understanding of REST API development, architecture, security, and best practices. Excellent communication skills in fluent English. Ability to work in a hybrid model, with up to 2 remote days per week. It is a strong plus if you have: Knowledge of containerization and orchestration tools or certifications. Experience working within Agile teams or with CI/CD pipelines. Language Required for the role: Fluent English, written and spoken. Eligibility to work in Europe: 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.