# Lead Software Engineer
**Company:** [AI Fund](https://hotfix.jobs/companies/ai-fund)
**Location:** Santa Monica, CA
**Salary:** $175K-$200K
**Skills:** React, TypeScript, Supabase, Postgres, Google Gemini, Claude, Deno, Tailwind, React Query, Vitest, AI Agents, LLMs, SQL, Node.js, Vite
**Posted:** 2026-03-24
> Lead the development of an AI-powered compliance platform as the first engineer, owning full-stack architecture, building AI agents for document processing and payroll validation, and establishing engineering standards for scalability and security.
## Job Description
## What You Will Do

### Own the Product Engineering
- Architect, build, and ship full-stack features across our React/TypeScript frontend and Supabase/PostgreSQL backend.
- Write production-quality code while moving at startup speed, using AI coding tools to dramatically compress the time between idea and shipped feature.
- Make and defend architectural decisions: data modeling, API design, security, performance, scalability.
- Maintain code quality, testing standards, and documentation without being told to.

### Build AI Agents and Automation Workflows
- Design and implement AI agents and multi-step automation pipelines that power our compliance engine: document ingestion, payroll validation, issue detection, remediation workflows.
- Work with LLMs (currently Google Gemini and Claude) to build intelligent extraction, classification, and validation systems.
- Build robust, observable, production-grade AI workflows with proper error handling, retry logic, audit trails, and human-in-the-loop checkpoints.
- Stay current on the evolving AI engineering landscape and bring in the right tools as they mature.

### Be the Engineering Standard
- Establish patterns and practices that will scale as we grow the team.
- Own security rigorously: data handling (PII, SSNs, payroll data), authentication, authorization, and audit logging are core to our value proposition.
- Instrument the system: logging, monitoring, error tracking, performance.
- Eventually recruit, mentor, and lead additional engineers as the team grows.

## What We Are Looking For

### Non-Negotiables
- Genuinely AI-native engineer: you live in Cursor, Windsurf, Claude Code, or equivalent. AI tooling is how you build, not a novelty.
- Strong full-stack capability: React/TypeScript on the frontend, Node/TypeScript or equivalent on the backend, comfortable in SQL and relational data modeling.
- Experience building AI agents and automation workflows in production -- not toy demos, but systems with real users and real consequences.
- Architectural judgment: you know when to move fast and when to slow down, when to abstract and when to hardcode, when to build and when to buy.
- Security-minded by default. Our customers share payroll data, SSNs, and financial records.
- Independent operator who needs direction on priorities, not on how to execute.

### Strong Signals
- Experience with Supabase, PostgreSQL, and serverless/edge function architectures (Deno a plus).
- Demonstrated history of shipping meaningful software at startup pace.
- Experience with document processing pipelines: parsing PDFs, Excel, Word documents; working with structured and unstructured data.
- Comfort working in a domain you do not initially know deeply. Compliance and regulatory logic is learnable; the engineering fundamentals are not.
- Excitement about the clean energy transition.

## The Current Stack
**Frontend:** React 18, TypeScript, Vite, Tailwind CSS, shadcn/ui, React Query, React Hook Form  
**Backend:** Supabase (PostgreSQL, Auth, Storage, Edge Functions), Deno runtime, TypeScript  
**AI / Agents:** Google Gemini (extraction, classification, chat), Claude API, custom Edge Function agents  
**Tooling:** Cursor / AI coding agents, Vercel (frontend deploy), Resend (email), Linear (PM), GitHub  
**Testing:** Vitest, React Testing Library, pgTAP (database)
**Apply:** https://hotfix.jobs/jobs/lead-software-engineer-at-ai-fund-a64a6a62-c52f-4b7a-88a0-6a69aa6d1c24
**Canonical:** https://hotfix.jobs/jobs/lead-software-engineer-at-ai-fund-a64a6a62-c52f-4b7a-88a0-6a69aa6d1c24