Assess engineering skills across hiring and development
Run technical interviews with Claude Code or Codex, screen candidates on real-world coding tasks, and see where your team needs upskilling.
Validated assessments since 2009 SOC 2 Type II ISO 27001
Trusted by teams at
Mixed exercises and AI-written code hide who can do the work
01
Different exercises and pass marks make candidates hard to compare.
02
AI-generated code makes it harder to see what a candidate understands.
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Skills gaps leave you guessing who is ready for the next project.
See skills in action
Choose work that matches the role
Choose from 1,300+ validated tasks across 80+ languages and frameworks, or add your own. Project tasks use VS Code and a terminal to reflect everyday engineering work.
See how people use AI
See how engineers use AI, check its output and correct mistakes. Claude Code and Codex run across Screen, Interview and Skills Intelligence, with interactions saved for review and the AI skills each person used shown in the report.
Review the work behind each result
Review submitted code, replay and integrity signals. Selected tasks score automatically against fixed rules; interviewers score using a rubric. Your team makes the hiring decision.
See where each team needs upskilling
Skills Intelligence shows assessed proficiency against built-in engineering role profiles. Use the results to plan staffing and focus development where your teams need it.
Choose your hiring approach
Technical screening
Shortlist candidates against a shared standard for each role.
Early careers
Assess graduates, interns and apprentices on their coding skills.
AI-native engineering hiring
Assess how candidates use AI and check its work.
Senior engineering hiring
Explore code and system design in a structured live interview.
Understand how skills are measured
Our Technical Manual is public and documents task validation, scoring and fairness monitoring. Our assessment scientists help you set pass marks and run validation studies using your roles and data.
Candidates love us too
9 in 10
candidates say the assessment content is fair.
87%
rate their Codility experience good or excellent.
“The tasks were relevant to real programming problems and focused on practical problem-solving rather than memorization.”
Candidate, Codility post-assessment survey
Codility candidate survey, October 2025 to April 2026. 45,000+ responses. Platform-wide results.
Engineering assessment for banks, consultancies, automakers and tech companies
Financial services
Standardize assessments across regions and support governance reviews.
Consulting and IT services
Assess engineering skills for hiring and client projects.
Automotive and electronics
Assess the software skills your products need.
Common questions
See an assessment for your team
Bring one role or team. We will walk you through relevant tasks and a sample report.