Software Engineer I

What You’ll Do

Ship customer-facing features end to end, from first commit through production, with close review and support from senior engineers

Build and extend the agentic systems behind Sybil, working primarily in Python with TypeScript and React across the stack

Use LLMs as a core part of how you work: prompting, evaluating generated code, and building tooling that makes the whole team faster

Own small projects yourself, including scoping the problem, proposing the approach, and seeing it through to done

Debug real issues in a production system that customers rely on, and learn how long-running agentic workloads behave in the wild

Contribute to technical design discussions and code reviews, and speak up when you see a better way

Learn offensive security on the job from a team that includes some of the best in the field

We’re Looking For Someone Who Has A Mix of The Following

Strong Python fundamentals and real comfort with data structures; you write clean, working code and can explain every line of it

Evidence of shipping software in any setting: internships, team or class projects, research, or personal projects all count equally

A habit of initiative: times you took on more than the assignment asked, fixed the thing nobody owned, or taught yourself what the work needed

Hands-on experience coding with LLMs, and judgment about when to use them, how to validate their output, and when to just write the code yourself

Fast, honest communication; you say what you know, what you do not, and where you are stuck

Coachability: you take a hint, run with it, and carry the lesson forward

Familiarity with modern JavaScript and React is a plus

Location: NYC (Hybrid)