Praca backend java – Krakow

Job Opportunity: Backend Engineer (Knowledge Graph) Location: Kraków, hybrid model (6-8 office days per month) Type of contract: B2B English: B2+ Role Overview We are looking for a Backend Engineer to join a newly formed team building an enterprise knowledge platform from the ground up. The platform makes unstructured content, such as documents and...

Expert knowledge of Java 21 (including JVM internals, memory management, Project Loom) and modern Spring ecosystem Solid experience with secure coding practices and building authentication/authorization flows using OAuth2/OpenID Connect Proven experience with Google Cloud Platform components (particularly GKE, Cloud Spanner, Cloud SQL) Strong practical...

Strong technical skills specifically in cloud- based technology (AWS serverless or other public cloud is essential) and Java DevOps experience, especially with Terraform would be a big plus Quality driven with ability to write tests on any level with BDD & TDD approach Understanding microservices architecture Understanding of front-end technologies including...

Ideal candidate should have: Strong software engineering capability in Node.js and/or Java Relational database expertise, particularly PostgreSQL (data modelling, query optimisation) Web UI development experience (modern JavaScript/TypeScript frameworks) Agentic application engineering knowledge, including orchestration of autonomous AI agents Integration...

Bulk payments through a file upload sound simple until you build them: many transactions in one file, validation for each of them, and an existing banking backend that has to accept them. You'll write the Java 21 / Spring Boot 3.5 services that bring business banking to an e-banking platform, as part of a new team. WHO WE ARE Specific-Group is an...

4 years of professional software engineering experience in Python and Java Hands-on experience building AI and GenAI solutions Practical knowledge of LLM capabilities, limitations and safe usage patterns Experience designing and implementing RAG solutions Experience with agentic or tool-using AI workflows Experience with prompt engineering, evaluation and...

4 years of professional software engineering experience in Python and Java Hands-on experience building AI and GenAI solutions Practical knowledge of LLM capabilities, limitations and safe usage patterns Experience designing and implementing RAG solutions Experience with agentic or tool-using AI workflows Experience with prompt engineering, evaluation and...

5 years of professional software engineering experience with strong expertise in Python Hands-on experience building and delivering AI and GenAI solutions in production environments Practical knowledge of LLM capabilities, limitations and safe usage patterns Strong experience designing and implementing RAG solutions Experience with agentic or tool-using AI...

5 years of professional software engineering experience with strong expertise in Python Hands-on experience building and delivering AI and GenAI solutions in production environments Practical knowledge of LLM capabilities, limitations and safe usage patterns Strong experience designing and implementing RAG solutions Experience with agentic or tool-using AI...

We are seeking a Lead Java Backend Developer with exceptional expertise in distributed systems, real-time data processing, and cloud-native architectures to deliver highly scalable enterprise platforms for high-throughput, mission-critical environments.Please note that working from the client's office 3 days per week is required.ResponsibilitiesDesign and...

🚀 We’re hiring: Backend Engineer 📍 Kraków (hybrid – 6 days/month in the office) 🤝 B2B contract We’re looking for an experienced Backend Engineer to join a team focused on developing and enhancing an Enterprise Knowledge Platform. You’ll work on backend services and APIs that enable the management, validation, versioning and publication of...

ASTRO Department develops applications to manage the ASTRO networks using Java backend technology and web frontend. The applications are built using CI/CD pipelines and used by Customers on premise. The candidate will use the following technologies: Java21 backend, web frontend. Tomcat, Hibernate. The candidate will be a part of a team of experienced and...

8 years of applied experience as an API engineer with solid understanding of architectural design (gap analysis, data models, etc.). Strong engineering background in back-end microservices development , application security, authentication, caching, and middleware. Advanced programming skills in Java (Go and Rust are a plus). Familiarity with Spring Boot and...

We are looking for an experienced Senior Java Fullstack Developer to join our team and be responsible for the development, integration, and maintenance of modern backend solutions. Responsibilities Design, develop, and maintain backend applications. Integrate systems and participate in migration projects. Create and develop RESTful APIs. Build and maintain...

5 years of backend Java development experience Solid experience with the Spring Boot ecosystem, RESTful API design, and modern service-oriented architecture Experience working with KeyCloak, and good understanding of Authentication and authorisation systems Solid understanding of SQL and working with relational databases Experience with Docker and...

5 years of hands-on experience in Java backend development Experience building microservices, REST APIs, and distributed systems Experience developing high-performance, scalable, and highly available applications Experience with SQL, NoSQL, and large-scale data processing platforms Experience with Kubernetes, GKE, and cloud platforms, preferably GCP...

5 years of hands-on experience in Java backend development Experience building microservices, REST APIs, and distributed systems Experience developing high-performance, scalable, and highly available applications Experience with SQL, NoSQL, and large-scale data processing platforms Experience with Kubernetes, GKE, and cloud platforms, preferably GCP...

For one of our Clients operating in the global financial services sector, we are seeking talented professionals to join long-term strategic initiatives. In this role you'll y ou'll design, build, and run secure, scalable APIs that power our Client's digital products and internal platorms. Working in a cross-functional engineering team, you'll help deliver...

We are looking for a Senior AI & Agentic Systems Engineer (Java) to join our team at EPAM Systems in Poland. This is a unique opportunity to work at the intersection of enterprise Java development and cutting-edge AI. We are looking for engineers who bring a strong backend foundation and a genuine passion for building intelligent, autonomous systems powered...

Around 6 years of professional software engineering experience Strong hands-on experience with Java and Spring Boot microservices Solid experience with Oracle, PostgreSQL, or other relational databases Experience with schema design, performance optimization, and transactional systems Strong unit and integration testing skills using JUnit, Mockito,...