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Founding Engineer

Build a retrieval/RAG context layer over all tools using TypeScript and Python

Build the systems behind airCFO's AI-powered accounting platform, including a retrieval/RAG context layer over all tools and internal apps used by teams daily. Work with TypeScript, Node, Python/FastAPI, React, Postgres, Claude + MCP to develop production-ready systems. Report to a hands-on fractional CTO in a small team with high autonomy, remote worldwide within UTC-8 to UTC+2.

Why This Role?

Report to a hands-on fractional CTO with high autonomy in a small founding team

Key Responsibilities

  • Build a retrieval/RAG context layer over all tools
  • Develop internal apps using TypeScript, Node, Python/FastAPI, React, and Postgres
  • Integrate Claude + MCP into platform systems
  • Maintain clean architecture and system-wide mental model
  • Drive coding agents effectively while ensuring system integrity

Requirements

  • Senior engineering experience
  • Proficiency in TypeScript and Python
  • Experience with Node, FastAPI, React, and Postgres
  • Familiarity with retrieval/RAG or AI agent systems
  • Ability to work autonomously in a small team

Required Skills

typescriptnode.jspythonreactpostgresFastAPI

Indonesia Context

Working Hours Overlap:
Minimal overlap — opposite hours
See remote (USD) vs local pay →

Keywords

founding engineerRAG systemAI accounting platformTypeScript Pythonremote worldwideCTO reported
View Original Description from HN Who is Hiring

Original description from HN Who is Hiring

airCFO ( https://aircfo.com ) | Founding Engineer | Remote, UTC -8 - UTC +2 | Full-time, part-time possible for the right candidate airCFO is an AI-powered accounting & finance services partner to 300+ startups (current/former clients include Anthropic, Replit, Harmonic), and we are building a platform to supercharge our service's capabilities. We're hiring a founding engineer to build the systems behind it: a retrieval/RAG context layer over all our tools, and the internal apps (TypeScript, Node, Python/FastAPI, React, Postgres, Claude + MCP) our teams use daily. We want someone senior who drives coding agents hard but refuses to lose the plot — clean architecture and a real mental model of the whole system. Production RAG/agents a plus, not a requirement. You'd report to a hands-on fractional CTO; small team, high autonomy. Email me at yair [dot] aviner {at} aircfo.com with "HN - Founding Engineer" in the subject.

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Company
airCFO
Source
HN Who is Hiring
Job Type
part time
Location
Remote · UTC-8
~0h overlap with Jakarta hours
Category
Seniority
senior
Posted
Jul 2, 2026

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Frequently asked questions

Is Founding Engineer at airCFO a remote job?
Yes. Founding Engineer at airCFO is a fully remote role open to candidates worldwide.
What type of employment is Founding Engineer at airCFO?
This is a part time position.
How do I apply?
Click the "Apply" button on this page to go to the official application at airCFO.

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