Senior Software Engineer (API Platform)

Join Nayya, a leading benefits platform, as a Senior Software Engineer on the API Platform team. In this role, you will design, build, and operate the APIs and services that power Nayya's products, partner integrations, and AI agents. You will define Nayya's agent-facing infrastructure, own services end-to-end, and improve the developer experience for internal teams, external partners, and AI engineers. You will also set the technical direction for the API Platform, mentor engineers across the company, and partner closely with security and infrastructure.

• Design, build, and operate the APIs and services that power Nayya's products, partner integrations, and AI agents.
• Define Nayya's agent-facing infrastructure: tool definitions, MCP-style protocols, agent authentication and authorization, action auditing, and safety controls.
• Set technical direction for the API Platform: API standards, versioning, authentication, rate limiting, and observability.
• A point of view on what makes an API or tool good (or bad) for an AI agent to use, and the instincts to design for that from day one
• 6+ years of professional software engineering experience, with significant time building backend services and public or partner-facing APIs
• Track record of leading projects that span multiple teams, and mentoring the engineers around you
• Comfortable owning operational quality observability, on-call, incident response, and continuous improvement
• Excellent written and verbal communication; you can explain a technical decision to engineers, PMs, and partners equally well
• Strong production experience with any of Python / Go / Node / Typescript / Ruby on Rails on AWS
• Deep expertise in API design (REST, GraphQL, or gRPC), distributed systems, and the tradeoffs that come with both
• Hands-on experience building with LLMs — function/tool calling, prompt and context design, evals, and the patterns that make AI systems work reliably in production
• Experience designing or shipping agent-facing infrastructure — MCP servers, tool catalogs, agent gateways, or similar
• Familiarity with agent frameworks (LangChain, LlamaIndex, LangGraph, etc.) and evaluation tooling for LLM applications
• Experience with authentication and authorization patterns for agents acting on behalf of users (delegated auth, scoped tokens, action approval flows)
• Experience in healthtech, fintech, insurance, or other regulated industries
• Working knowledge of HIPAA, SOC 2, or similar compliance frameworks
• Open-source contributions or public technical writing