senior java software engineer

Apifonica, based in Warsaw, Poland, is seeking a Senior Java Engineer to help design, build and run the backend services behind our cloud communications platform across international markets.You will work in a cross-functional engineering organisation, delivering cloud-native microservices with Java 21+, Spring Boot and related frameworks, owning services...

Box Poland is seeking a Senior Software Engineer to help scale an exabyte-scale platform across multiple GCP and AWS regions. You will design and build backend services in Java/Scala, drive architectural decisions, and mentor engineers while participating in Agile processes.Expect to work on highly available distributed systems, contribute to on-call...

Miratech is seeking a Senior Java Developer to join a European client project focused on tax administration software. You will contribute to development and maintenance of secure, scalable platforms for public sector digital transformation, collaborating with a 20+ person team across distributed environments.The role emphasizes Java, Spring, Quarkus,...

Miratech is seeking a Senior Java Developer to join a European client project focusing on tax administration systems. You will develop and maintain scalable backend services using Java, Spring, and Quarkus, with microservices and containerized deployments in Docker/Kubernetes.You will collaborate with international teams and contribute to CI/CD and testing...

Avenga w Polsce poszukuje doświadczonego backend developera Java, który będzie projektować, rozwijać i utrzymywać aplikacje w architekturze mikroserwisowej. Będziesz współpracować z zespołami frontendowymi i QA, dbać o jakość kodu, testowalność oraz bezpieczeństwo systemów bankowych.Wymagane zaawansowane umiejętności Java 11+, Spring Boot...

Private Medical & Dental care & Life Insurance Internal Mobility program - possibility of rotation between projects, locations, accounts Project Description We are seeking an experienced Java Developer with advanced expertise in Apache Hadoop to join our engineering team. This role goes beyond standard Hadoop administration. We require a candidate with a...

Jit zaprasza do zespołu backendowego w Warszawie, pracującego w środowisku hybrydowym. Omówimy zakres obowiązków obejmujący projektowanie i rozwój rozwiązań backendowych w Java, tworzenie mikroserwisów oraz REST API. Użyjesz Spring Boot, KDD i narzędzi AI do poprawy jakości kodu i wydajności.Wymagane jest 6+ lat doświadczenia, biegła...

Inwedo to software house z ponad 10-letnim doświadczeniem. Realizujemy projekty od wstępnej weryfikacji pomysłów po wdrożenie, łącząc solidne fundamenty inżynierskie z praktycznym podejściem do AI i nowoczesnych technologii.Poszukujemy specjalisty Java backendu, z doświadczeniem w GCP i integracjach płatności, gotowego prowadzić wysokiej...

Diverse CG Sp. z o.o. Sp.k. in Gdynia, Poland is seeking a Software Developer to work on backend integration solutions. You will be responsible for building and maintaining microservices using Java and Spring Boot, and integrating APIs in a collaborative agile environment.The ideal candidate has over 5 years of experience and strong SQL knowledge, especially...

TechTree is recruiting for on behalf of one of our clients. TechTree is an AI-driven recruitment platform working with high-growth companies. When you apply, our AI Agent matches you not just to this role but to other relevant opportunities across our network, so one application can unlock multiple roles. Mid/Senior Java Backend Engineer — Insurance —...

StrongSD GmbH is seeking a backend engineer with a deep understanding of distributed systems to join our team in Poland. You will design, implement, and maintain secure, scalable services in Java/Spring, collaborating with cross-functional teams to deliver end-to-end solutions from concept to deployment.You will work across the stack, from backend services...

O&S Computer-Soft poszukuje Senior Java Developera do pracy nad backendem w oparciu o Java. Będziesz projektować REST API, rozwijać architekturę mikroserwisową i współpracować z frontendem, DevOps oraz QA.Wymagamy min. 5 lat doświadczenia, dobrej znajomości Spring Boot oraz doświadczenia z bazami SQL (PostgreSQL/MySQL). Praca w zespole,...

Rozwój, utrzymanie i administracja systemami klasy enterprise opartymi o technologie Java EE, ze szczególnym uwzględnieniem integracji systemów, konteneryzacji oraz administracji środowiskami aplikacyjnymi.Zakres obowiązkówProjektowanie, implementacja i utrzymanie aplikacji w architekturze Java EE / JEEAdministracja i konfiguracja serwerów...

RE Partners is seeking a Senior Java Engineer to join a Deployment Security & Software Reliability team supporting a major financial institution. The role is highly hands-on, focusing on Java, CI/CD, dependency modernization, automated testing, and software supply-chain security.You will collaborate with development teams to remove barriers to rapid, safe...

BELVEDERE is seeking a Senior Backend Engineer to design, develop, and maintain backend applications using Java and Kotlin within a microservices architecture. You will work on cloud-native solutions, primarily with Azure, and collaborate with cross-functional teams to deliver scalable, secure systems.Strong ownership and focus on quality are expected. The...

Senior Java & Kotlin Engineer / Tech Lead Working model: Hybrid - 2-3 days per week in the office About the role We're looking for a strong, hands-on Senior Java & Kotlin Engineer with experience in technical leadership and mentoring, who is keen to continue developing in this area. You'll combine hands-on software development with technical guidance,...

Solid Company in Kraków seeks an experienced Java engineer to design, develop, and maintain distributed systems and microservices using Java 25 and Spring Boot. You will drive DevOps adoption, analyze requirements, and collaborate with cross-functional teams to deliver scalable, observable systems.Responsibilities include improving CI/CD pipelines, incident...

ING Hubs Poland is seeking an experienced software engineer to design and develop robust backend services for financial markets. You will work on high-impact platforms, implement REST APIs, and improve scalability and CI/CD pipelines in a dynamic, global team across London, Amsterdam, Brussels, New York, and Singapore.The role requires an MSc in CS or...

Are you looking for a career move that will put you at the heart of a global financial institution? Bring your passion for software development, process automation, and AI integration to Citi's Developer Services Team.By Joining Citi, you will become part of a global organization whose mission is to serve as a trusted partner to our clients by responsibly...

About The Role What if your engineering skills could directly shape the platforms and systems behind the AI revolution? We're looking for Senior Software Engineers in Kraków to design, build, and scale the infrastructure that powers cutting-edge AI products used by millions of people worldwide. This is high-impact, technically challenging work — the...