Salary
$100k – $200k per year
Location
Remote (United States)
Visa
H-1B filings in 12 months: 18 · for this role: 4
Employment
Full-Time
First seen by Alion on Nov 12, 2026. Invisible Technologies scores A on the Alion truth index.
Overview
Company
Impact
Profile match
Invisible Technologies is an American artificial intelligence company that supplies human-generated training data, model evaluation and fine-tuning services to AI labs and enterprise clients, along with workflow software. Founded in 2015, it became known for providing human-feedback data used to train OpenAI's ChatGPT and has since expanded into enterprise AI services delivered through a large global network of freelance experts. It recruits freelance AI trainers worldwide, including voice actors and language data contributors in dozens of languages, sign language specialists, audio evaluators and Python and Kotlin coding experts who write and review training data.
Backed by Greycroft, Backed VC, Level Equity
Note: The job is a remote job and is open to candidates in USA. micro1 is recruiting for an unnamed client for a backend software engineering role focused on creating challenging coding tasks from real repositories. The work includes building reproducible environments, writing deterministic verifiers and reference solutions, and flagging ambiguous or unverifiable tasks.
Responsibilities
- Create realistic, challenging coding tasks for frontier AI models, drawn from repositories you know well
- Design problems that require real engineering skill — subtle bugs, non-trivial features, meaningful performance work — not lookup or boilerplate
- Build a reproducible environment for each task
- Write deterministic verifiers that accept correct solutions across different valid implementations, while rejecting incorrect, incomplete, or hard-coded approaches
- Provide a reference solution showing how the task can be solved
- Flag tasks that turn out to be ambiguous or unverifiable rather than submitting them
Skills
- Hands-on expertise in at least one of Python, Java, Rust, Go, C++, or TypeScript
- Significant hands-on expertise in at least one of: Python3, Java, Rust, Go, C++, or TypeScript
- Deep understanding of algorithms, data structures, and software engineering principles
- Proven ability to debug complex systems, resolve bugs, and deliver effective optimizations
- Experience with large codebase refactoring and legacy system modernization
- Track record of delivering high-impact features from conception through delivery
- Strong documentation and communication skills to articulate technical concepts clearly
- Interest in AI and its technical challenges — previous AI experience not required
Benefits
- Fully remote
Company Overview
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