Lead, Software Engineer

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Epsilon seeks a Senior Software Engineer with 7+ years of experience to design, build, and scale backend systems using Java and Python. The role emphasizes spec-driven AI-assisted development using tools like Cursor, Claude Code, and Kiro. Responsibilities include developing scalable backend services, applying AI-assisted coding practices, integrating RAG-based and Agentic AI workflows, leading system design discussions, ensuring code quality, collaborating with cross-functional teams, and resolving production issues. Requirements include strong expertise in Java and Python, experience with Spring framework, build tools (Maven/Gradle), Git, data modeling with relational and NoSQL databases, Unix/Linux environments, and mandatory experience with AI-assisted development and RAG/Agentic AI systems. Candidates must have strong fundamentals in data structures, algorithms, OOP, design patterns, system design, and experience in Agile teams. Benefits include flexible time off, paid holidays, sick time, parental leave, childcare and elder care assistance, adoption assistance, health coverage, 401(k), tuition assistance, commuter benefits, professional development, and more. The position is full-time, on-site in Irving, Texas, with a salary range of $98,000 to $182,000 annually.