Full job description
Epsilon seeks a Senior Software Engineer with 7-10 years of experience to design, build, and scale backend systems using Java and Python in an Agile environment. The role emphasizes spec-driven AI-assisted development using tools like Cursor, Claude Code, and Kiro. Responsibilities include developing scalable backend services, integrating RAG-based and Agentic AI workflows, leading system design, ensuring code quality, collaborating cross-functionally, and resolving production issues. Requirements include strong Java and Python expertise, experience with Java frameworks (Spring), build tools (Maven/Gradle), Git, data modeling, Unix/Linux, AI-assisted development, RAG architectures, Agentic AI, and fundamentals in data structures, algorithms, OOP, design patterns, and system design. Benefits include flexible time off, paid holidays and sick time, parental leave, childcare and elder care assistance, adoption assistance, health coverage, 401(k), tuition assistance, commuter benefits, professional development, and more. Location: Irving, Texas, United States. Salary range: $88,900 to $165,100 annually.
What you'll do
- Design, develop, and maintain scalable backend services using Java and Python
- Apply spec-driven AI-assisted development practices including AI-assisted code generation, refactoring, optimization, debugging, test generation, and code reviews
- Build and integrate RAG-based solutions and Agentic AI workflows into enterprise systems
- Lead system design and architecture discussions
- Ensure high code quality through reviews, testing, and engineering best practices
- Collaborate with product, data, platform, and cross-functional teams
- Own and resolve complex production issues
Requirements
- Bachelor’s or Master’s degree in Computer Science, Engineering, or related field or equivalent experience
- 7-10 years hands-on software development experience
- Strong expertise in Java and Python
- Backend engineering experience with Java frameworks like Spring
- Experience with Java build tools (Maven/Gradle) and source control (Git, pull requests)
- Strong data modeling skills with relational and NoSQL databases
- Experience in Unix/Linux environments including automation and scripting
- Mandatory experience with spec-driven AI-assisted development
- Practical usage of AI coding tools such as Cursor, Claude Code, Kiro
- Ability to validate and productionize AI-generated code
- Hands-on experience with RAG architectures and Agentic AI systems
- Strong fundamentals in data structures, algorithms, OOP, design patterns, system design
- Experience building and operating backend systems in production
- Understanding of REST APIs, microservices, distributed systems
- Proven ability to own problems end-to-end including design, implementation, testing, production support
- Demonstrated technical leadership and mentoring
- Experience working in Agile/Scrum teams
Tech stack
JavaPythonSpringMavenGradleGitCursorClaude CodeKiroRAG (Retrieval-Augmented Generation)Agentic AIREST APIsMicroservicesUnix/LinuxAngularDatabricksSparkAWSAzureGCPDockerKubernetesCI/CD
Benefits
Flexible time off (FTO)15 paid holidaysPaid sick timeParental/new child leaveChildcare & elder care assistanceAdoption assistanceComprehensive health coverage401(k) retirement planTuition assistanceCommuter benefitsProfessional developmentEmployee recognitionCharitable donation matchingHealth coaching and counseling