Demo

Founding Full-Stack Engineer

MLabs
San Francisco, CA Full Time
POSTED ON 11/24/2025 CLOSED ON 12/2/2025

What are the responsibilities and job description for the Founding Full-Stack Engineer position at MLabs?

Founding Full-Stack Engineer - AI Production Systems

Location: San Francisco, CA (On-site)

Employment Type: Full-time

Compensation: $200K - $275K

We are building the first telemetry and production system designed for large language models (LLMs), giving them complete visibility into and control over running software, beginning with automatic error fixes.

We are seeking a Founding Full-Stack Product Engineer who is comfortable wearing all hats in a fast-paced environment. This role is highly dynamic, bridging classical full-stack engineering with cutting-edge Generative AI product features.

Key Responsibilities:

  • Full-Stack Engineering: Work across the entire system, from optimizing telemetry gathering to deep-dive customer issue resolution.
  • AI Feature Development: Increase the general intelligence of our system by building advanced AI features, including context engineering and custom GenAI tools.
  • Product Ownership: Work directly with customers to understand issues, diagnose problems (e.g., why one fix was successful and another failed), and deliver high-quality solutions.
  • Continuous Learning: Constantly absorb new knowledge about the rapidly evolving GenAI landscape to operate at the technological cutting edge.

You will join a small, aggressively funded team focused on enabling AI to seamlessly keep applications running.

  • Experience: 3 - 7 years of experience as a full-stack product engineer at a high-growth start-up.
  • Full-Stack Mastery: Proficiency in our core technical stack: TypeScript, Next.js, AWS, MongoDB
  • AI Acumen: Demonstrated passion for and ability to work with cutting-edge Generative AI concepts (e.g., context engineering, custom tooling).
  • Versatility: Comfortable context-switching between infrastructure optimization, customer interaction, and feature development.
  • On-site Policy: Must be able to work in-person 5 days per week in our San Francisco office (near the Salesforce tower).
  • Visa Sponsorship is available, and H-1B transfers are welcome.
  • Highly Competitive Salary: $200,000 - $275,000
  • Significant Equity Ownership: 0.5% - 2% to ensure direct participation in the company's success.
  • Comprehensive Health Coverage: 100% coverage for Medical, Dental, and Vision insurance.
  • Retirement Plan: 401K matching.
  • Work-Life Balance: Unlimited PTO (Paid Time Off).
  • Additional Perks: Pet insurance and a travel stipend.
  • Impact: Direct influence on the product and engineering strategy as a founding member of a well-funded AI company.

Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within 4 weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search.

Commitment to Equality and Accessibility:

At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing human-resources@mlabs.city.

MLabs Ltd collects and processes the personal information you provide such as your contact details, work history, resume, and other relevant data for recruitment purposes only. This information is managed securely in accordance with MLabs Ltd’s Privacy Policy and Information Security Policy, and in compliance with applicable data protection laws. Your data may be shared only with clients and trusted partners where necessary for recruitment purposes. You may request the deletion of your data or withdraw your consent at any time by contacting legal@mlabs.city.

Salary : $200 - $275

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