senior java engineer

Sii Poland is seeking a seasoned Java backend developer to build and optimize RESTful services in a modern financial services domain. You will design backend components, work with SQL databases, and contribute to architecture and CI/CD efforts from a Szczecin-area office.The role requires 5+ years of Java with Spring, cloud and container experience, and...

Sii Poland is seeking an experienced Senior Java Developer to join a team building a modern enterprise data integration and processing platform with a global scope. You will develop scalable backend services, microservices, and event-driven integrations, modernizing legacy apps in line with domain-driven design principles.The role emphasizes architecture...

Your ResponsibilitiesDesign, develop, and maintain applications within the banking domainCollaborate closely with Business Analysts and QA Engineers in a self-organizing Agile (Scrum) teamEnsure the security and reliability of developed solutionsCreate and maintain unit and automated testsWork with large-scale datasets of various structuresIntegrate...

Valora Outcomes is seeking a Senior Java Platform Engineer to design backend components of a large, distributed enterprise platform. You will focus on reliability, security, observability, and API quality while shaping end-to-end components rather than isolated tickets.The role requires leading architectural decisions, building Kafka-based event-driven...

Kramp is seeking a Senior Backend Engineer (Java) to take end-to-end ownership of critical domains in the Checkout & Validation team. You will shape the customer journey by building scalable APIs, collaborating with product and business to deliver real value, and shipping in a cloud-based GCP environment.You will work with Java, Spring Boot, and modern tech,...

RubyPlay Limited in Warsaw offers a remote-first role within the Engineering Team. As a Backend Java engineer, you will design scalable, low-latency game services and APIs while collaborating with game designers, product teams, and client developers.The team focuses on high-throughput systems, distributed simulations, and performance tuning, with...

BairesDev, a global remote-first technology company, is seeking a Senior Java Engineer to secure our Java services and React front ends in a high-stakes context.You will analyze flagged security findings to identify true vulnerabilities, remediate issues, and apply secure coding practices while collaborating with the security team to prioritize and resolve...

ALTEN Polska is seeking a Senior Software Developer to design and maintain microservices-based systems with Kafka in a hybrid Poland team.The ideal candidate has 6-8 years in software development, strong Java/Spring expertise, and experience with cloud-friendly architectures. Advanced English and banking-sector exposure are a plus. We offer a stable,...

Revolut is hiring a Backend Engineer to join our fast-growing technology team. You will work on mobile APIs and microservices, contributing to the security, reliability, and scalability of payments, fraud detection, and risk management systems.You’ll collaborate across product and engineering, writing clean, testable code with TDD and modern practices....

Luxoft Poland is seeking an experienced backend engineer to join a long-term, enterprise-scale project in Kraków. You will design, develop, and maintain mission-critical Java 11+ services using Spring Boot within a distributed microservices environment.Collaborating with architects, QA, DevOps, and product owners, you will drive technical direction,...

ING Hubs Poland is hiring!The Expected Salary For This Position9 600 - 16 000 PLN - Engineer III13 000 - 22 000 PLN - Engineer IVThe financial ranges specified in the announcement are adjusted and may differ from the range specified in the remuneration regulations.Work environmentJoin a high-impact engineering team delivering cutting-edge solutions for...

Sii Poland in Warsaw is seeking an experienced Senior Java Developer to join a team building a modern data integration and processing platform supporting logistics on a global scale. You will design scalable backend services and microservices using Java and Spring Boot, with a focus on event-driven integrations via Apache Kafka.The role requires hands-on...

A leading financial technology company is seeking a Senior Java Software Engineer to join their dynamic team in Kraków, Poland or work remotely. The role involves designing and implementing microservices while taking ownership of various business domains. Candidates should have over 5 years of Java and Spring experience, along with a solid understanding of...

Senior Software Engineer (I*Net Basement)Join our Application Security & I*Net Basement Team and help modernize one of BEC’s strategic platforms. I*Net provides the foundation for several dozen Java web applications and is at the heart of our transformation towards modern architecture.As a Senior Software Engineer, you will help evolve the platform beyond...

ALTEN Polska is seeking a Senior Software Developer with strong expertise in microservices, Kafka-based systems, and cloud-ready solutions. You will design, develop, and maintain scalable services, collaborating with architects and cross-functional teams.The ideal candidate has 6–8 years of experience, advanced English, Java 11+/21, Spring Boot, Kafka, and...

Net2Source Inc. in Warsaw, Poland is seeking a Senior Java Specialist to design and develop scalable microservices-based applications. You will lead the Java backend, focusing on performance and maintainability in a hybrid work setup.The role requires 5 to 10+ years in Java frameworks, strong microservices experience with Spring, and familiarity with Kafka,...

Senior Software Java Engineer (Poland/Remote)ZEN.COM is a smart financial app designed for your everyday life – at home and on the go. We make payments, online shopping, and personal finance management fast, secure, and effortless. With ZEN, you can enjoy cashback on purchases, full control over your spending, and peace of mind thanks to purchase...

Want to work on trading systems at a top N. American Bank This isn’t just another dev role. It’s your chance to engineer the core of global trading. We’re talking ultra-low-latency architectures, real-time market data, and automation at scale — all in an environment where milliseconds matter and billions move. You’ll work on greenfield and...

Want to work on trading systems at a top N. American Bank This isn’t just another dev role. It’s your chance to engineer the core of global trading. We’re talking ultra-low-latency architectures, real-time market data, and automation at scale — all in an environment where milliseconds matter and billions move. You’ll work on greenfield and...

Want to work on trading systems at a top N. American Bank This isn’t just another dev role. It’s your chance to engineer the core of global trading. We’re talking ultra-low-latency architectures, real-time market data, and automation at scale — all in an environment where milliseconds matter and billions move. You’ll work on greenfield and...