Senior Java Engineer

Senior Java Engineer position at a global AdTech market leader with opportunities to work on real-time advertising bidding systems, low-latency infrastructure, and GenAI research and development.

Requirements

- 5+ years of commercial software development experience with Java as the primary language - Deep knowledge of the Spring ecosystem (Boot, Data, MVC, Security, Cloud) - Strong practical experience with reactive/asynchronous programming (Spring WebFlux / Project Reactor) - Solid understanding of distributed systems, concurrency, and performance tuning at the JVM level - Strong verbal English skills at B2 level or higher - Commercial programming experience or strong familiarity with Go (Golang) - Hands-on experience with high-load and Big Data tools including Apache Kafka, ClickHouse, and Aerospike - Real-world experience or deep interest in LLMs and AI orchestration tools such as LangChain, LangGraph, or N8N - Familiarity with frontend development using ReactJS and TypeScript Benefits

- Flexible work schedule with choice between fully remote or hybrid format - Stable monthly payments in USD via international B2B contracts - Opportunity to work on production infrastructure handling 1 trillion + daily requests