Founding/AI Engineer Job at Belle Lynn Sourcing LLC, San Francisco, CA

YUhXMHZaS0hDOEtwdUR5VmVLZUw3QlNFSkE9PQ==
  • Belle Lynn Sourcing LLC
  • San Francisco, CA

Job Description

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.

Job Tags

Relocation package, Flexible hours, 3 days per week,

Similar Jobs

LifeStance Health

Licensed Clinical Social Worker (REMOTE) - Burley, WA Job at LifeStance Health

Job Description Sign-On Bonus! We are actively looking to hire talented therapists in Washington State, who are passionate about patient care and committed to clinical excellence. Step into a brand new clinic in Lakewood and pick out your office! Please apply ...

The Shella Foundation

Data Entry Typist Job at The Shella Foundation

 ...deserve. We are seeking a detail-oriented and reliable Remote Data Entry Typist to input, update, and maintain data in our systems accurately and efficiently. The ideal candidate will have strong typing skills, good attention to detail, and the ability to work... 

RICEFW Technologies Inc

PL-VDOT Project Manager PMP Job at RICEFW Technologies Inc

 ...VDOT Project Manager PMP *Local candidates only please *Candidate MUST possess PMP certification through PMI or VITA's PM certification. No other certification qualify. *Candidate must also be able to work onsite 2-3 day/week The Virginia Department... 

Prestige Staffing Services

Materials Manager - Direct Hire Job at Prestige Staffing Services

 ...Job Description Job Description Prestige Staffing Services is seeking a strong leader with 10+ years of Materials Management experience for a direct hire opportunity with excellent benefits in the greater Findlay, Ohio area. The Materials Manager is responsible... 

Schulte Hospitality Group

Technology Support Specialist | Schulte Hospitality Group Job at Schulte Hospitality Group

 ...Specialist to join our team! Schulte Companies is an organization whose success is rooted in its service culture. Our mission is to exude hospitality, be respectful and authentic, prioritize the needs of our internal and external stakeholders above our own, and continuously...