Technical interviews for every hiring process
Identify great candidates using real tasks, not brainteasers. Get an accurate measure of your candidate's abilities and hire the right person for the job.
Screen
Coding Challenges & Bytes
Comprehensive coding challenges and quick skill assessments that evaluate real-world programming skills.
- Massive library of real-world coding challenges
- Git-based workflow for candidates
- Automated AI evaluation and scoring
- Support for multiple programming languages and frameworks
- Bytes with test-driven development approach
- Create and Remix challenges with AI
Interview
Enhanced CodePair Collaboration
Real-time collaborative coding sessions with candidates in a shared development environment. Experience AI-powered assistance and near-native performance.
- Real-time multi-cursor collaboration with enhanced performance
- Built-in AI agent with full file context and prompting insights
- Blazing-fast performance with near-native speed
- Full application builds with instant previews
- Complete browser-based shell access and terminal capabilities
Assess
AI-Powered Insights
Automated evaluation and detailed performance analytics powered by artificial intelligence.
- AI-powered code analysis
- Detailed performance metrics
- Comprehensive candidate reports
- Generate targeted follow-up interview questions
Upskill
10x Engineers in the AI Age
Upskill your engineering teams with AI-powered coding challenges and collaborative learning environments designed for the modern developer.
- AI-assisted skill development
- Team-based coding challenges
- Real-time collaboration tools
- Progress tracking and analytics
trusted by leading organizations worldwide

Real tasks, not brainteasers.
Coding Challenges
- Real engineering tasks: With coding challenges that simulate real work, CodeSubmit is helping the best engineering teams hire faster, smarter, and more equitably.
- Extensive Library: Choose from hundreds of coding challenges, from junior to senior architect, covering all major programming languages and frameworks -- or upload your own.
- Natural candidate experience: Our innovative GIT-based workflow allows candidates to work on their own machines, with their own tools, and in their own time.
- Seamless follow-up interviews: Launch CodePair live coding sessions directly from completed take-home challenges for in-depth technical discussions.

Real-time collaboration with AI-powered assistance.
CodePair
- Real-time multi-cursor collaboration with blazing-fast performance: Superior performance and reliability with reduced lag and better synchronization, optimized for near-native coding experiences with no delays—just smooth, responsive interactions.
- AI agent built in: ChatGPT-like AI agent that empowers candidates while giving insights into their prompting skills and problem-solving abilities.
- Full application builds & instant previews: Build and run entire applications from React frontends to Node.js APIs with real-time previews and automatic port detection.
- Complete browser-based shell access: Full terminal capabilities enabling commands, package management, build tools, and more—exactly like a local environment.
Skip the algorithms. Test real coding skills.
Bytes
- Real-world problem solving: Forget leetcode. Candidates solve actual programming challenges using Test-Driven Development, just like they would on your team.
- Instant, detailed feedback: Get comprehensive reports showing exactly how candidates approached the problem, including their code quality, test results, and development process.
- Candidate-friendly experience: No pressure, no timers, no awkward screen sharing. Candidates code in their own environment using familiar tools and workflows.
Integrates with your ATS
Integrate with Greenhouse, Lever, Personio, Zapier, Ashby, and other tools to track and manage all your candidates in one place. Stay on top of interview results by receiving on-time and actionable notifications.