AI & data
Artificial Intelligence
Covers how you use and evaluate AI models, including safety, prompting and product decisions.
V4 · Scored AI engineering beta · certification in review
Explore assessmentSkill Proof
Show what you can do through applied questions and realistic, skill-specific workspaces.
39 of 39 skills
AI & data
Covers how you use and evaluate AI models, including safety, prompting and product decisions.
V4 · Scored AI engineering beta · certification in review
Explore assessmentCloud & infrastructure
Covers AWS architecture, networking, security, reliability and cost decisions.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Covers C++ fundamentals, memory, the STL, performance and debugging.
5 MCQs · 2 practical chains
Explore assessmentCloud & infrastructure
Covers Docker images, containers, networking, storage, security and production use.
5 MCQs · 2 practical chains
Explore assessmentEngineering workflow
Covers everyday Git work, branching, merging, rebasing, recovery and collaboration.
5 MCQs · 2 practical chains
Explore assessmentEngineering workflow
Covers pull requests, repository workflows, Actions, permissions and maintenance.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Covers Go fundamentals, interfaces, concurrency, HTTP services, testing and performance.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Covers Java fundamentals, collections, object design, concurrency, the JVM and backend work.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Covers JavaScript fundamentals, async behavior, objects, browser APIs and debugging.
5 MCQs · 2 practical chains
Explore assessmentAI & data
Covers framing an ML problem, preparing data, modeling, evaluation and production use.
5 MCQs · 2 practical chains
Explore assessmentData
Covers document modeling, queries, indexes, aggregation, transactions and operations.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Covers the Node.js runtime, async work, APIs, streams, reliability and security.
5 MCQs · 2 practical chains
Explore assessmentData
Covers relational modeling, SQL, indexes, transactions, performance and database operations.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Covers Python fundamentals, data structures, functions, errors, testing and performance.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Covers React components, state, effects, rendering, data flow and performance.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Covers React Native UI, navigation, native APIs, performance and release work.
5 MCQs · 2 practical chains
Explore assessmentData
Covers filtering, joins, aggregation, CTEs, window functions and query reasoning.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Covers TypeScript fundamentals, narrowing, generics, unions, API typing and maintainability.
5 MCQs · 2 practical chains
Explore assessmentData
Covers framing a question, cleaning data, exploring it, choosing metrics and explaining the result.
5 MCQs · 2 practical chains
Explore assessmentData & productivity
Covers formulas, lookups, tables, analysis, modeling and workbook quality.
5 MCQs · 2 practical chains
Explore assessmentProduct & design
Covers research, interaction design, prototyping, accessibility and product judgment.
5 MCQs · 2 practical chains
Explore assessmentProduct & design
Covers discovery, prioritization, roadmaps, metrics, execution and stakeholder work.
5 MCQs · 2 practical chains
Explore assessmentOperations
Covers planning, delivery, risk, estimation, stakeholders and leadership.
5 MCQs · 2 practical chains
Explore assessmentBusiness
Covers requirements, processes, stakeholder discovery, data and solution evaluation.
5 MCQs · 2 practical chains
Explore assessmentGo-to-market
Covers prospecting, discovery, qualification, objections, value communication and closing.
5 MCQs · 2 practical chains
Explore assessmentGo-to-market
Covers onboarding, adoption, customer health, renewals, risk and expansion.
5 MCQs · 2 practical chains
Explore assessmentMarketing
Covers channels, audiences, campaigns, analytics, experiments and budget decisions.
5 MCQs · 2 practical chains
Explore assessmentMarketing
Covers audience strategy, planning, writing, distribution, SEO basics and measurement.
5 MCQs · 2 practical chains
Explore assessmentPeople
Covers role intake, sourcing, screening, structured assessment and candidate experience.
5 MCQs · 2 practical chains
Explore assessmentPeople
Covers the employee lifecycle, people systems, policy, performance support and workforce operations.
5 MCQs · 2 practical chains
Explore assessmentOperations
Covers process design, capacity, quality, metrics, risk and continuous improvement.
5 MCQs · 2 practical chains
Explore assessmentFinance
Covers financial statements, forecasting, modeling, valuation, unit economics and controls.
5 MCQs · 2 practical chains
Explore assessmentSecurity
Practical Cybersecurity and Ethical Hacking work samples. Candidate release is gated on bank and runtime review.
5 MCQs · 2 practical chains
Explore assessmentInfrastructure
Practical Site Reliability Engineering work samples. Candidate release is gated on bank and runtime review.
5 MCQs · 2 practical chains
Explore assessmentEngineering
Practical Software QA and Testing work samples. Candidate release is gated on bank and runtime review.
5 MCQs · 2 practical chains
Explore assessmentAlgorithms
Practical DSA and Algorithms work samples. Candidate release is gated on bank and runtime review.
5 MCQs · 2 practical chains
Explore assessmentArchitecture
Practical System Design work samples. Candidate release is gated on bank and runtime review.
5 MCQs · 2 practical chains
Explore assessmentPeople
Practical People Management work samples. Candidate release is gated on bank and runtime review.
5 MCQs · 2 practical chains
Explore assessmentMental arithmetic
Mental arithmetic with the existing Quick Math test, scoring and history.
80 questions · 8 minutes
Open Quick Math