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Senior/Staff Engineer - Hegel

London, UK💼 Full-time🗓 2026-04-23 → 2026-09-26

Core

Building a family of property-based testing libraries (Hegel) to improve software reliability and serve as an on-ramp for Antithesis customers.

Role type

Senior/Staff Engineer (Open Source Libraries)

Builds

Open source property-based testing libraries for multiple programming languages

Domain

Software Engineering / Testing / AI-assisted Development

Deliverable

product features

Required skills

Property-based testing (PBT), Python, Rust, Open source maintenance, AI-assisted coding workflows

Preferred skills

Go, TypeScript, C++, OCaml, Nix, Expert-level language ownership

Technologies

Python, Rust, Go, TypeScript, C++, OCaml, Claude Code, Nix

Responsibilities

Design and implement property-based testing libraries, maintain open source codebases, integrate AI tools into development workflows, mentor team members on engineering standards

Seniority

Senior/Staff, hands-on IC

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