Coding-agent evaluation and training data

Independently assessed engineers for agentic evaluation, code review, red teaming, and coding-agent training data. You define the outcome, we scope, verify, and deliver.

What we mean by verified

Every coder clears two tiers before they see a study: identity and credibility, then an independent skills assessment matched to your task.

01
Identity and credibility
Sourced from GitHub, Stack Overflow, and referrals, screened for 6+ years of experience and a current in-language role, with identity confirmed through Onfido and credibility checked against GitHub or employer records.
02
Independent skills assessment
Python, JavaScript/TypeScript, Java, and more, tested through live coding interviews, custom challenges, and take-home projects built from your real task rather than generic puzzles. Test cases, completion time, and section weights combine with AI grading into a single rubric score.

What teams use verified coders for

The work spans evaluation and training. Each study is scoped to your requirements and delivered by engineers who have passed independent assessment in the languages your task needs.

Agentic evaluation

Rubric-based grading of coding-agent runs, from security vulnerability review to off-task behavior rating, scored by engineers who can read the whole run.

Trajectory and process data

Working sessions captured as the full decision path: approaches tried, tool calls, retries, and edits, structured for process reward modeling and behavioral cloning.

Adversarial and red-team testing

Engineers probe code generation models for insecure patterns, unsafe suggestions, and the failure modes automated checks miss.

Preference and RLHF data

Side-by-side comparisons, best-of-N selection, and fine-grained feedback on model-generated code and repair messages.

What gets captured

When a verified engineer works through a coding task, the submission is the working session as a whole rather than a single diff. We record the decision path: the approach they started with, the point where they abandoned it, each tool call and its result, test runs and their failures, retries, timing, and the edits in between. The final pull request is one row of signal. The session behind it is hundreds.
 

How it is structured

Each session resolves into a sequence of steps a model can learn from: the state the engineer saw, the action they took, and the outcome it produced, with enough context to reconstruct why. We can also capture the engineer's own rationale at key decision points, which turns a raw log into graded reasoning data.
 

What it unlocks

Process-level data supports work that outcome grading cannot: process reward modeling, where good intermediate decisions earn signal alongside good endings; agentic evaluation, where a run is judged against how a strong engineer would have proceeded; and behavioral cloning, where models train on how experts actually work.

Quality that holds at scale

Verification happens before the work: identity checks, credibility signals, and an independent skills assessment matched to your requirements. Review happens on every submission: behavioral cheat detection covers copy-paste, tab switching, plagiarism, and ChatGPT matching, with AI use blocked or permitted per task depending on your design.

See our full approach to data quality.

Scope your next coding study

Speak with our team about your requirements, or tell us your use case and we will follow up with a relevant sample.