Jobs · empllo
Full-Stack Developer
Halcyon Labs · Europe · Posted 11d ago
About the role
Design and implement coding tasks while developing and extending test suites for AI training.
📋 Description Design and implement multi-file coding tasks (bugs, features, refactoring, tests) Write clear natural-language specifications and reference implementations Develop and extend unit and integration test suites Review peer-generated tasks for correctness, clarity, and realism Identify edge cases, ambiguities, and potential failure modes Ensure alignment between specifications, code, and expected outputs 🎯 Requirements Advanced professional English writing proficiency 3–7 years software engineering experience Strong Python and JavaScript/TypeScript; knowledge of Java, C#, or Go Backend or full-stack production systems experience Experience with testing frameworks (pytest, Jest, JUnit, xUnit, Go) Proven ability to debug large, multi-file codebases 🎁 Benefits Part-time, project-based engagement Remote work with flexible scheduling Independent role; control over schedule and tools Opportunity to work with an AI Lab partner
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FAQ
Is the Full-Stack Developer role at Halcyon Labs remote?+
This Full-Stack Developer position is listed as remote (Europe).
What is the salary for the Full-Stack Developer role at Halcyon Labs?+
The listing states Estimated 76k-174k USD.
What seniority level is this Full-Stack Developer role?+
This is a mid level position.
How do I apply for the Full-Stack Developer role at Halcyon Labs?+
Use the "Apply on empllo" button to open the original posting on empllo, where you can submit your application directly to Halcyon Labs.