senior java backend engineer java 21 spring boot

Our projects are long-term partnerships with clients who stay with us for years. Why? Because we deliver solutions that truly solve their business problems. At fireup.pro, as a Java Developer, you will design and develop systems that have a real impact on how companies operate — from complex logistics platforms to advanced industry‑specific systems....

Cześć! Poznaj możliwości współpracy ze Scalo! W Scalo zajmujemy się dostarczaniem projektów software'owych i wspieraniem naszych partnerów w rozwijaniu ich biznesu. Tworzymy oprogramowanie, które umożliwia ludziom dokonywanie zmian, działanie w szybszym tempie oraz osiąganie lepszych rezultatów. Wykorzystujemy szerokie spektrum usług IT, aby...

Cześć! Poznaj możliwości współpracy ze Scalo! W Scalo zajmujemy się dostarczaniem projektów software'owych i wspieraniem naszych partnerów w rozwijaniu ich biznesu. Tworzymy oprogramowanie, które umożliwia ludziom dokonywanie zmian, działanie w szybszym tempie oraz osiąganie lepszych rezultatów. Wykorzystujemy szerokie spektrum usług IT, aby...

Company Description Sopra Steria is one of the largest players in the tech industry in Europe, known for its consulting, digital services and software development. We operate in nearly 30 countries in the world, hiring more than 55,000 employees. The Polish branch, as the Global Delivery Center, operates in Katowice since 2007 and has been growing ever...

About ARQARQ is one of the fastest-growing fintechs in the world. Our mission is to redefine how people interact with money across borders, building the infrastructure to move value seamlessly. We’re still early in our journey, which means every person who joins shapes the future of our product, culture, and growth. If you’re excited by big challenges,...

Podsumowanie: Poszukujemy Backend Java Developera do rozwoju systemu Replica, który będzie odpowiedzialny za odbieranie i przetwarzanie dużych wolumenów danych przekazywanych z systemu centralnego. Obowiązki: - Odbieranie i przetwarzanie danych przesyłanych z systemu centralnego za pomocą MQ i SFTP. - Zapisywanie danych w bazie...

At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe. Join a team that is reshaping the future of technology in global finance! If you want to work with cutting-edge tech, microservices, and cloud solutions – this is the opportunity for you! We are part of a major initiative to build a brand-new Collateral...

Sii Poland is seeking a Senior Fullstack Developer for a banking sector project with a strong focus on Java, Spring, and Angular. The role emphasizes building scalable backend services and polished frontend features within an Agile, remote-friendly environment.The candidate will work on dashboards and key banking applications, collaborating with senior...

Devire Outsourcing IT to forma współpracy dedykowana dla specjalistów z branży IT, oparta na zasadach własnej działalności gospodarczej - B2B, realizująca projekty dla wiodących Klientów prowadzących innowacyjne i nowoczesne projekty. Aktualnie dla naszego Klienta, jednej z największych globalnych instytucji bankowo-inwestycyjnych poszukujemy...

Capgemini Polska is seeking a Senior Java backend developer to design and build scalable backend systems using Java and the Spring ecosystem. You will focus on microservices, high performance, and code quality while collaborating with DevOps on cloud infrastructure.You will work across REST APIs, memory management, GC tuning, and modern Java features,...

About ARQ ARQ is one of the fastest-growing fintechs in the world. Our mission is to redefine how people interact with money across borders, building the infrastructure to move value seamlessly. We’re still early in our journey, which means every person who joins shapes the future of our product, culture, and growth. If you’re excited by big challenges,...

DataWalk, a high-tech software product company in Poland, is seeking a Senior Full-Stack Developer (Java and Angular). This remote role involves architecting and delivering powerful analytical capabilities and collaboration tools. Applicants should have over 5 years of software development experience, deep proficiency in Java (Spring Boot), TypeScript,...

Senior Java Developer 📍 Warszawa (hybrydowo: 1 dzień w tygodniu z biura) 💰 140-170 PLN/h netto + VAT (B2B) Dołącz do długofalowego projektu realizowanego w dużym środowisku enterprise. Poszukujemy doświadczonego Senior Java Developera, który będzie uczestniczył w rozwoju i utrzymaniu kluczowych systemów biznesowych działających w...

OBI Smart Technologies, a Reply Group joint venture, seeks a senior backend engineer to own backend architecture and evolve event-driven systems in a hybrid Katowice setting. You will design scalable services and integrations across the assortment management domain, coordinating with architects, product owners and stakeholders to deliver robust...

IN GROUPE is a specialist in identity, secure transactions, and digital services. As the global leader in secure identity and trust services, 4,000 employees across 40 countries ensure everyone has access to a reliable and secure identity in both physical and digital worlds. With our solutions and our international network of 10 R&D centers, we support...

LocationKraków, Poland, Poland# Full Stack Engineer (Java + React) at N Consulting LtdLocationKraków, Poland, PolandSalary£300 - £350 /dayJob TypeContractDate PostedMarch 19th, 2026Apply NowJob Opportunity: Full Stack Engineer (Java + React) Location: Kraków, Poland (2 days office / 3 days remote) Experience: 5–10 years Assessment: Karat Assessment...

📍 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...

Project DescriptionIn this role you will develop and maintain Java-based services and REST APIs, collaborate closely with cross‑functional teams, and contribute to system architecture focused on reliability, security, and code quality. You will participate in the full software development lifecycle, including CI/CD processes, automated testing, code...

At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe. We are looking for an experienced Senior Fullstack Java Engineer to join a well-established international team working on a large-scale transformation program within a global financial environment. You will be part of a long-term initiative focused on...

As a recruitment company, DCG understands that every business is powered by experienced professionals. Our management style and partnership approach enable us to meet your needs and provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for: Senior Backend...