Job Description
Job Description
Founding/AI Engineer (High Growth Startup)
Founding / AI Engineer (High Growth Startup) – Full Stack Developer (React, TypeScript, Node)
Location: San Francisco, CA (Onsite 3–5 days/week) - Relocation Assistance Provided
Compensation: Annual Salary $130k - $200k + 1–1.5% Equity + Benefits
Company: Belle Lynn Sourcing (CLIENT CONFIDENTIAL)
About the Role
Belle Lynn Sourcing LLC is partnering with an innovative AI startup that’s redefining how humans and software interact online. We’re seeking a Full Stack Engineer/AI Engineer (with a “Founding Spirit”) to help build the next generation of AI-powered web products. You’ll design and ship real products used by real people blending software engineering, AI development, and product strategy in one dynamic, fast-paced environment.
You’ll work across the stack — React, TypeScript, Node, Supabase, and serverless frameworks — while influencing architecture, product direction, and technical standards for a company redefining how humans and AI interact online.
If you’ve ever wanted to build from zero to one, this is your moment.
Key Responsibilities
- Lead product integrations and architecture for scalable AI systems
- Develop full stack web applications using React, TypeScript, Node, and Tailwind
- Collaborate directly with users and founders to define product direction
- Build and optimize AI agent workflows that interact intelligently with real-world users
- Deliver production-ready features fast, balancing innovation and reliability
What They’re Looking For
You’re an engineer with startup DNA — you ship quickly, think independently, and thrive in fast-moving environments. You have experience building or scaling real products and a passion for leveraging artificial intelligence to solve complex problems.
They’re especially interested in candidates who have:
- Worked at or founded a high-growth startup
- Experience as a Full Stack Developer, AI Engineer, or Software Engineer
- Attended a top-tier university (MIT, Stanford, Harvard, etc.) or elite accelerator (YC, EF, Thiel Fellowship)
- Built and shipped projects end-to-end — either in production or personal ventures
- A record of exceptional execution, ownership, and innovation
Tech Stack
- Frontend: React, TypeScript, Tailwind
- Backend: Node.js, Supabase, Railway (Serverless)
- AI Tools: OpenAI, LLM frameworks, agent workflows (preferred)
(They care more about your ability to build exceptional products than your years of experience.)
Why You’ll Love Working Here
- Competitive pay + 1–1.5% equity in a high-growth AI startup
- Health, dental, and vision insurance
- 401(k) with company match
- Flexible paid time off and sick leave
- Regular offsites, team dinners, and collaboration sessions
- A chance to do the most meaningful and fun work of your career
✅ Signs You’ll Thrive Here
You love autonomy and ownership — you make things happen
You’ve built something from scratch (a startup, app, or system)
You’re excited by AI, automation, and human-computer interaction
You move fast, ship often, and care deeply about quality
❌ This May Not Be for You If
You want a slow, easy role — this environment moves fast
You prefer theory over execution — they focus on shipping real, usable products
You need rigid structure — this is a startup, not a corporate playbook
Apply Now
If you’re a Full Stack Engineer, AI Engineer, or Software Developer ready to push boundaries, apply today. Be prepared to share your GitHub, portfolio, or demo video — they love seeing what you’ve built.