* This position is open to applicants from all countries

About Ambitus
Ambitus is an applied AI product and research company that partners with domain experts and enterprises to advance frontier AI capabilities.

About the role
We are working to build the future of AI for software engineering by pushing the boundaries of what frontier coding systems can achieve. In this role you will work hands-on inside real, actively maintained open-source codebases. You will turn written feature requests into working implementations, write automated tests to prove it works, and specify features precisely enough that another engineer could build them. The work spans across coding languages and ecosystems.

Responsibilities
Implement new features in established open-source repositories (TypeScript/JavaScript, Python, Go, Rust) from a written specification, following the project's existing architecture, conventions, and test suite.
Write thorough automated tests for features that check observable behavior, cover edge cases and error paths, and run deterministically (no network access,



no timing-dependent assertions).
Write feature specifications where every sentence is a testable claim: exact defaults, exact error messages, ordering guarantees, and edge-case rules.
Review an implementation and a test suite written from the same specification, find where they disagree, and determine which side is wrong and what must change.
Make a fresh clone of a repository, install dependencies, run the project's native toolchain (npm/pnpm with vitest or jest, go test, pytest, cargo), and reproduce that setup in a Docker container.
Use git the way a maintainer would: feature branches, clean commits with everything committed, and comfort reading a project's history to understand why the code is the way it is.
Write explicit, structured technical notes and feedback that a fellow engineer could act on without further explanation.

Qualifications
At least one year of professional experience building soft

📌 Junior Software Engineer (India)
🏢 Ambitus Research
📍 India