Feltsense - AI Engineer

The role

You will own the architecture and development of an autonomous agent system. You will build multi-agent orchestration systems, self-improving agent harnesses, and AI-powered backend services.

What you will do

• Own the system architecture and make key technical decisions across the platform.
• Design and build multi-agent systems and orchestration infrastructure.
• Develop self-improving agent harnesses, including feedback loops, evaluation systems, and memory.
• Build and maintain AI-powered backend services on top of LLM APIs.
• Write production code, particularly around agent runtime and orchestration.
• Debug and improve AI behavior in production through prompt engineering, structured outputs, retries, and fallbacks.
• Break down complex technical challenges into actionable milestones and prioritize the engineering roadmap.
• Establish engineering standards around code reviews, testing, observability, and release processes.
• Lead and support the engineering team while remaining deeply involved in implementation.

Required qualifications

• 4+ years of professional software engineering experience.
• Previous technical leadership experience at an early-stage company (Founding Engineer, Tech Lead, Head of Engineering, or similar).
• Hands-on experience building and shipping multi-agent systems and orchestration frameworks to production.
• Experience developing self-improving or self-evolving agent harnesses.
• Strong backend engineering skills, including designing and maintaining APIs, services, and data flows.
• Experience working with LLM-based systems, including prompt engineering, model configuration, structured outputs, embeddings, retrieval, and evaluation.
• Daily hands-on experience with AI coding agents such as Claude Code, Cursor, OpenAI Codex, or similar tools.

Nice to have

• Strong TypeScript and Node.js experience.
• Experience with Vercel AI SDK, Claude Agent SDK, or building custom agent runtimes.
• Experience with PostgreSQL, Supabase, and pgvector.
• Familiarity with background job systems such as Inngest or Pub/Sub.
• Experience with Zod, Vitest, and GCP Cloud Run.
• Experience growing or restructuring distributed engineering teams.
• Interest in AI evaluation, safety, and observability.

About the company

Silver raised $5.1M to build agents that operate as fully autonomous founders. They are building agents that identify business opportunities, validate ideas, and launch software products.