Job Title: Senior Software Engineer Java
Location: St. Louis, MO
Duration: / Term: 6+ months
Job Description:
Experience Desired: 5+ Years
Job Description:
We are looking for a highly skilled Senior Software Engineer (Java) to join an elite engineering team working on high-scale, mission-critical systems. This role is ideal for engineers who enjoy solving complex problems, care deeply about code quality, and take a craftsman-like approach to software engineering.
You will work on platforms that operate at extreme throughput (TPS), handle critical workloads, and demand thoughtful system design, reliability, and performance at scale.
Key Responsibilities - Design, build, and maintain high-performance, scalable backend systems using Java
- Solve complex technical problems using a consultative and analytical mindset
- Collaborate with experienced engineers to evolve architecture and system design
- Ensure engineering excellence through clean code, testing, reviews, and automation
- Recommend technical improvements and defend design decisions with data and reasoning
- Contribute to system reliability, resilience, and observability in high-TPS environments
Technical Requirements Core Technologies: Strong hands-on experience with Java 8 / Java 11
- Lambda expressions
- Stream API
- CompletableFuture & async programming
Deep understanding of Kafka, including:
- Core concepts & messaging semantics
- Replication, reliability, and durability
- Kafka internals, infrastructure, and control
- Data retention strategies
- Experience with MongoDB (data modeling, performance, and scalability)
- Familiarity with Sonar for code quality and technical debt management
- CI/CD experience using Jenkins
- Databases: Experience with one or more of the following enterprise databases: Oracle DB / Sybase IQ / DB2
- Rules Engines: Hands-on experience with Drools or any equivalent rules engine
Key Skills:
Java 8 / Java 11, Lambda, Stream API, Kafka, Drools Rules Engine