Senior Kotlin/Java Backend Engineer, Kerno

• 8+ years of professional backend development experience, with strong proficiency in Kotlin (or another JVM based language)
• Experience designing and building distributed systems or complex backend services
• Comfortable working with multiple languages, we use whatever is the best tool for the right solution
• Strong understanding of testing methodologies, CI/CD pipelines, and developer tooling
• Experience with or strong interest in AI agents development
• Familiarity with containerization and local environment orchestration (Docker, etc.)
• Experience working with databases
• Ability to work autonomously in a remote environment and communicate clearly in writing
• A product minded person, you care about why you're building something, not just how

Desirable

• We're looking for a Senior Backend Developer to help shape the core of our product. You'll work across the stack, from the validation and test generation agents to the backend platform and infrastructure
• This is a high-impact role where your decisions directly affect the product our users rely on every day
• Design and build core components of Kerno's validation engine, code indexation, test generation and execution
• Work building AI agents that are in charge of test generation and code analysis
• Build and improve the platform layer local and/or remote environment orchestration
• Own features end-to-end: scoping, design, implementation, testing, and rollout
• Collaborate closely with the founding team on technical direction and architecture
• Help extend language and framework support as we grow beyond our current stack
• Contribute to the reliability and performance of a system that developers depend on for fast feedback