Senior Backend Engineer (Founding)

Responsibilities:

• Design and build the core Node.js services and REST APIs from scratch, built to scale as we grow.
• Own system design end-to-end: service boundaries, data flow, caching, queueing, failure modes, and scale.
• Ship AI/ML-powered features, including LLM and agentic capabilities.
• Use LLMs and agentic tooling across the SDLC, from design and code generation to testing and debugging.
• Model data and optimize SQL/NoSQL queries for performance; integrate with third-party platforms.
• Debug production issues, own reliability, and set the engineering standards the rest of the team will grow into.

Requirements:

• Strong Backend Node.js Developer Profile.
• Must have 6+ years of hands-on backend engineering experience using Node.js building production-grade systems for B2C products at a meaningful consumer scale.
• Must be AI-native in their own engineering workflow: already uses LLMs and agentic tooling across the SDLC, from design and code generation through testing and debugging.
• Must have owned backend architecture end to end, including greenfield builds. Should be able to make early architecture calls and reason clearly about service boundaries, data flow, caching, queueing, failure modes, scalability, and reliability trade-offs under real constraints.
• Must have a solid understanding of backend fundamentals, including API development, service-oriented architecture, data structures, algorithms, and clean coding practices.
• Must have experience designing, building, and maintaining APIs and backend services, including integrations with external systems and third-party platforms.
• Must have strong experience working with databases (SQL and/or NoSQL), including efficient data modeling, query optimization, and performance tuning.
• Must have worked in B2C product companies/startups at a meaningful consumer scale. (WealthTech, FinTech, or a high-growth consumer product background is highly preferred).
• Must have experience building and shipping products that use LLMs and agentic workflows to end users.