Fernstone
Founding Engineer
$120K–$180K
New York City · On-site · Full-time · Posted Sep 27, 2026
- Experience
- 2+ years of experience.
About the job
Build Fernstone’s insurance product as its second engineering hire, working with operations to identify needs and owning systems across the stack.
What you'll do
- Partner with operations to understand insurance workflows and decide what to build.
- Design and build features spanning the interface, application logic, data model, and infrastructure.
- Create reliable workflows and practical AI systems that automate multi-step work and involve people when needed.
What they ask for
- 2+ years of experience.
- Shipped and maintained production software that people depend on.
- Strong backend and relational database fundamentals, with ability to build a polished frontend.
- Practical experience building with language models, evaluating outputs, and handling mistakes.
Pay
$120K – $180K (base salary)
Tools
language models
AI focus
Build AI systems that interpret information, automate multi-step work, recognize when a person needs to step in, and evaluate and handle language-model mistakes.
Model-written summary · the original posting is authoritative