Founding AI Engineer
LB36
Posted: 12/08/2026
- -
- New York, United States
- Permanent
Founding AI Engineer
AI models are improving quickly. Making them reliable enough to trust in production is a much harder problem. This is a chance to tackle that problem from the ground up as one of the first engineers at a well-funded AI startup.
What’s in it for you?
- Meaningful equity alongside a competitive salary and bonus
- Join early enough to have real influence over the product and architecture
- Work directly with experienced founders on difficult, unsolved AI problems
- Build technology that will be used by enterprise customers
- Own projects from initial idea through to production
- Help establish the engineering culture and technical standards
- Opportunity to grow into a senior technical leadership position as the team expands
What you’ll be building
The focus is on making AI applications measurable, testable and dependable enough for real-world use.
Your work will include:
- Building production applications and systems powered by LLMs
- Developing evaluation frameworks to measure model quality and behaviour
- Creating automated testing and validation tooling for AI systems
- Building scalable ML infrastructure, services and APIs
- Running experiments to understand and improve model performance
- Fine-tuning and evaluating modern language models
- Developing tools that identify weaknesses and failure modes in AI applications
- Shipping reliable software across the full ML lifecycle
You’ll likely have:
- Experience building and shipping production software systems
- Hands-on experience working with machine learning and LLMs
- Experience evaluating, training or fine-tuning modern language models
- Strong Python engineering skills
- Experience deploying ML systems into production
- The ability to take an ambiguous problem and turn it into something that works
- Strong technical judgement and a willingness to make decisions without perfect information
Anna Heneghan
Senior ML Research & Engineering Recruiter