Skills

Browse testable skills

Browse the skills you can be tested on, grouped by category. Each skill shows the exam formats you can take it in — open a skill to see the full format breakdown and a short plan to start preparing.

Ready to prove one? Take a skill exam — free, scored, and Verified on completion.

All skills

6 skills

  • JavaScript Fundamentals

    Web DevelopmentFoundational

    Verify practical JavaScript for everyday web and application work — the language core, async patterns, and the DOM.

    • Proctored exam
    • Untimed practice
    • Adaptive mode
    Open to start preparing

  • React Development

    Web DevelopmentIntermediate

    Demonstrate component design, hooks, state, and rendering behaviour for production React interfaces.

    • Proctored exam
    • Adaptive mode
    Open to start preparing

  • TypeScript Essentials

    Web DevelopmentIntermediate

    Show you can model data with types, use generics and narrowing, and keep a TypeScript codebase type-safe.

    • Proctored exam
    • Untimed practice
    Open to start preparing

  • Python for Data Analysis

    Data & AnalyticsIntermediate

    Verify you can load, clean, and analyse tabular data in Python and communicate what the numbers mean.

    • Proctored exam
    • Untimed practice
    • Adaptive mode

    Exam formats

    • Proctored exam

      A timed, integrity-checked attempt that produces a Verified, selection-eligible result you can share with employers.

      About 60 minutes · Proctored · Verified result

    • Untimed practice

      An unproctored run-through that gives feedback by topic so you can find your gaps. It does not affect your Verified result.

      No time limit · Unproctored · Practice only

    • Adaptive mode

      Question difficulty adjusts to your answers so the exam reaches a confident result in fewer questions.

      Variable length · Proctored · Verified result

    How to start preparing

    1. Revisit data frames, grouping, and joining tables.
    2. Practise cleaning messy data and summarising it clearly.
    3. Take a practice run, then book the proctored exam.

    The full exam guide for this skill is being written.

  • SQL & Databases

    Data & AnalyticsFoundational

    Show you can query relational data with joins, aggregation, and subqueries, and reason about a schema.

    • Proctored exam
    • Untimed practice
    Open to start preparing

  • Cloud Fundamentals

    Cloud & InfrastructureFoundational

    Demonstrate the core cloud building blocks — compute, storage, networking, and the shared-responsibility model.

    • Proctored exam
    • Adaptive mode
    Open to start preparing