Espa AI
Founding Software Engineer
Headquarters · Hybrid · Full-time · Posted Nov 10, 2025
- Experience
- 5+ years of software engineering experience; systems-level or backend development is ideal.
About the job
Build and scale the backend and agentic infrastructure for an AI productivity assistant, shaping its architecture, product direction, and engineering practices.
What you'll do
- Design and scale backend systems, agentic reasoning, tool-use, memory, and orchestration for the AI assistant.
- Work with founders on technical vision, product direction, and infrastructure; refine the product through customer pilots and feedback.
- Establish engineering practices for quality, reliability, and experimentation, and help grow and mentor the technical team.
What they ask for
- 5+ years of software engineering experience, ideally in systems-level or backend development.
- Experience building or contributing to agentic frameworks, multi-step reasoning systems, or autonomous tools.
- Proficiency in Python, TypeScript, or Go.
- Understanding of LLM APIs, embeddings, vector databases, and retrieval-augmented generation (RAG).
Nice to have
- Experience with LangChain, LlamaIndex, or similar frameworks.
- Prior founding or early-startup experience; AI integrations, production AI/ML systems, or open-source contributions are also listed as nice-to-haves.
Tools
Python, TypeScript, Go, LangChain, LlamaIndex, LLM APIs, vector databases, RAG
AI focus
Build agentic infrastructure for an AI productivity assistant, including real-time reasoning, tool use, long-term memory, orchestration, and integrations with LLMs and APIs.
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