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Senior Java Software Engineer
Job in
Berkeley, St. Louis County, Missouri, USA
Listed on 2026-02-21
Listing for:
QvalFocus Inc.
Full Time
position Listed on 2026-02-21
Job specializations:
-
Software Development
Senior Developer, Software Engineer, Java Developer
Job Description & How to Apply Below
We are seeking a highly skilled Senior Software Engineer (Java) to join an elite engineering team building high-scale, mission-critical systems. This role is ideal for engineers who enjoy solving complex problems, take pride in clean and maintainable code, and thrive in high-throughput, always-on environments.
You will contribute to platforms operating at extreme transaction volumes (TPS), requiring strong system design, reliability engineering, and performance optimization expertise.
Key Responsibilities- Design, develop, and maintain scalable, high-performance backend systems using Java
- Solve complex technical challenges with a structured, analytical approach
- Collaborate with senior engineers to evolve distributed system architecture
- Participate in design reviews and defend architectural decisions with data-driven reasoning
- Improve system performance, resilience, and observability in high-TPS environments
- Contribute to CI/CD automation and continuous engineering improvements
- Strong hands-on experience with Java 8 / 11
- Completable Future & asynchronous programming
- Deep understanding of Kafka
- Reliability, infrastructure, and performance tuning
- Experience with MongoDB (data modeling, scalability, performance optimization)
- Experience with enterprise databases such as Oracle, Sybase IQ, or DB2
- Experience with Jenkins for CI/CD pipelines
- Familiarity with Sonar Qube for code quality and technical debt management
- Hands-on experience with Drools or similar rules engine
Position Requirements
10+ Years
work experience
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