Take home projects in real repositories, with faster review and better follow up.

Let candidates shine in projects shaped like the role

The strongest candidates do their best work in familiar tools, with enough context to make thoughtful engineering decisions. CodeSubmit gives candidates a real repository, their own workflow, and a submission your team can review with confidence, save engineer time on, and carry into live follow up in the same codebase.

Assignment library

Projects shaped like the role

Start from a task that looks like the tickets your team ships. Use the library as the first step in a wider review and follow-up system, with clearer signal from the start.

Repo-based project simulations
60+ languages & frameworks
Use library tasks or upload your own

Submission workflow

Candidates work how developers actually work

Candidates work in their own environment, leave reviewable commits behind, and give your team a cleaner read on code quality and decision-making.

Clone, code, commit, and push
Own tools and IDE setup
Reviewable diffs instead of snapshots

CodePair continuation

Carry the same codebase into live follow up

Create CodePair sessions directly from take-home submissions. Use the same codebase to probe state decisions, async flow, tests, and tradeoffs with the work already on screen.

Import the original submission
AI-suggested follow-up prompts
Live collaborative review

AI review

Summaries that speed up human review

Use AI to summarize candidate code, surface likely risks, and generate sharper review notes. The goal is faster human review, not outsourcing the hiring decision.

Code quality and structure summaries
Testing and risk highlights
Follow-up guidance for reviewers
AI-Powered

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I like how the library challenges are structured around on-the-job skills. The experience for candidates is excellent. They work locally with the IDE and tools they are most comfortable with.

Kevin Sahin
Kevin Sahin
Co-Founder @ ScrapingBee
Kevin Sahin

Candidate Experience

Give candidates a real repo, not a browser toy

No browser sandboxes or toy prompts. Candidates use Git, their editor, and their own setup. Submissions are diffs your team can review, not snapshots you cannot trust. The result is more honest signal about how someone will work on day one.

Submission -> Review -> Follow-Up

Turn submissions into better interviews

The strongest loop combines a realistic assignment, faster AI-supported review, and a live follow-up in the same codebase. Reviewers skip the boilerplate, and candidates get a fair shot to explain real decisions.

Real repo assignments
Choose from hundreds of take-home assignments that feel closer to real feature work than a throwaway browser prompt.
Git-based Workflow
Candidates clone the assignment, work locally with their own tools, and push back a reviewable diff your team can actually discuss.
Faster review with AI
Use AI to summarize structure, testing gaps, and likely follow-up questions without handing it the final hiring decision.
60+ Languages & Frameworks
From JavaScript to Rust, comprehensive support for multiple programming languages and frameworks.
Test-driven Development
Screen candidates early with our TDD approach where candidates write code against predefined tests.
Challenge remixing with AI
Paste a job post, describe the role, or start from an existing assignment and let AI draft a version your team can tune before you send it.