Senior Java Developer

Xebia is a global tech company with a team of 1,000+ experts delivering work across cloud, data, and software. The company originated from two Polish companies, PGS Software and GetInData, and works on projects in fintech, e-commerce, aviation, logistics, media, and fashion. Clients include McLaren, Aviva, Deloitte, Spotify, Disney, ING, UPS, Tesco, Truecaller, AllSaints, Volotea, Schmitz Cargobull, Allegro, and InPost. Xebia uses modern open-source stacks and is a trusted partner of Databricks, dbt, Snowflake, Azure, GCP, and AWS.

• 5+ years of professional experience in Java backend development
• Strong experience with Java (8+) and Spring Boot
• Experience in business product development within fintech environments
• Experience working on B2B products
• Hands-on experience with high-concurrency systems, multi-threading, and high-volume traffic environments
• Proven experience working with large-scale data processing systems
• Solid knowledge of MyBatis, Redis, and message queue systems
• Experience working with relational databases such as MySQL, including writing complex queries and performance tuning
• Experience working with Elasticsearch and big data technologies such as Hadoop
• Experience with messaging systems (queues) and event-driven architectures
• Experience with unit and integration testing
• Experience integrating with third-party services and APIs
• Strong debugging and problem-solving skills
• Solid understanding of software design patterns and backend architectures
• Good communication skills and ability to work in a team environment
• Immediate availability or a short notice period is preferred

Nice to have:

• Familiarity with RPC frameworks such as Apache Dubbo
• Experience working with systems serving large-scale user bases
• Understanding of distributed systems and microservices architecture

• Designing, developing, and maintaining high-performance backend systems using Java and Spring Boot
• Working on transaction, payment, and cashier-related functionalities within a complex trading platform
• Building and maintaining RESTful and RPC APIs (e.g., using Apache Dubbo)
• Developing solutions capable of handling high-volume traffic, high concurrency, and multi-threaded environments
• Processing and optimizing large volumes of data within distributed systems
• Collaborating with cross-functional teams to deliver scalable and reliable systems
• Integrating backend services with third-party applications and external systems
• Troubleshooting, debugging, and optimizing system performance in production environments

Work from the European Union region and a work permit are required.