Learn a skill the market uses
Start with a relevant role, identify what your work does not yet demonstrate, then choose a course for that gap. These are editorial learning routes connected to observed demand, not employer endorsements.
Provider pages reviewed 2026-09-07. Most routes offer free learning and a course certificate. An optional vendor exam is labelled separately. We charge no learning fee and receive no referral fee. A certificate alone does not guarantee competence, a job or a salary increase.
Compare all live skill demandPython
290 matching postings across 9 employers in the latest site sample.
CS50 Introduction to Programming with Python
Harvard CS50 · Free course and CS50 certificate
Python functions, exceptions, file handling and unit tests. An introductory route for learners building their programming foundations.
View official courseCredential
Free CS50 course certificate after the required assessed work. Optional paid edX verification is separate; this is not an accredited Harvard qualification.
Read provider credential requirementsWork to demonstrate
Build a data importer with input validation, tests and a reproducible run. Explain its failure cases. This is a suggested portfolio exercise, not an issued assessment.
Check the actual requirements
AI Engineer, GTM Claudification at AnthropicAI Operations Engineer, Partnerships at AnthropicBackend systems
271 matching postings across 9 employers in the latest site sample.
Full Stack Open
University of Helsinki · Free course and course certificates
Node.js APIs, databases, testing and deployment. Programming, web, database and Git foundations. This route does not cover all distributed systems work.
View official courseCredential
Free course certificates after required exercises. Use a backend project to demonstrate the relevant subset.
Read provider credential requirementsWork to demonstrate
Build an API with validation, authorization, persistence and tests for failures and retries. This is a suggested portfolio exercise, not an issued assessment.
Check the actual requirements
Staff+ Software Engineer, Backend at AnthropicStaff+ Software Engineer, Databases at AnthropicCloud and infrastructure
211 matching postings across 9 employers in the latest site sample.
Cloud practitioner training
AWS · Provider lists learning options; optional exam and some training are paid. Check current terms; purchase is not required here.
AWS cloud concepts, services and terminology. Foundational cloud literacy. Cloud engineering roles require deeper implementation experience.
View official courseCredential
Optional AWS Certified Cloud Practitioner exam. This is a foundational vendor certification, not proof of cloud engineering readiness.
Read provider credential requirementsWork to demonstrate
Document a small service architecture with permissions, recovery and cost assumptions; use a local simulation if you have no cloud budget. This is a suggested portfolio exercise, not an issued assessment.
TypeScript and JavaScript
137 matching postings across 9 employers in the latest site sample.
Full Stack Open
University of Helsinki · Free course and course certificates
JavaScript applications, React, Node.js and a TypeScript extension. Programming experience, basic web and database knowledge, and Git.
View official courseCredential
Free course certificates after the provider-required exercises. University credit has separate requirements.
Read provider credential requirementsWork to demonstrate
Ship a tested application with typed inputs, accessible UI and documented error handling. This is a suggested portfolio exercise, not an issued assessment.
Check the actual requirements
Full Stack Engineer, Education Labs at AnthropicFull-Stack Software Engineer, Reinforcement Learning at AnthropicAI and machine learning
97 matching postings across 8 employers in the latest site sample.
CS50 Introduction to Artificial Intelligence with Python
Harvard CS50 · Free course and CS50 certificate
Search, knowledge, uncertainty and machine learning through Python projects. Prior programming experience in Python. Start with Python foundations if needed.
View official courseCredential
Free CS50 course certificate after the required projects and quizzes. It does not establish production AI or agent reliability.
Read provider credential requirementsWork to demonstrate
Evaluate a model on held-out cases and report measured errors, limitations and reproducibility. This is a suggested portfolio exercise, not an issued assessment.
Check the actual requirements
AI Engineer, GTM Claudification at AnthropicAI Operations Engineer, Partnerships at AnthropicData and analytics
59 matching postings across 8 employers in the latest site sample.
CS50 Introduction to Databases with SQL
Harvard CS50 · Free course and CS50 certificate
Querying, relational models, joins and database design. An introductory database route. It covers SQL, not every analytics or data science requirement.
View official courseCredential
Free CS50 course certificate after the required problem sets and final project.
Read provider credential requirementsWork to demonstrate
Create a sourced dataset, document its schema and answer a question with reproducible queries and quality checks. This is a suggested portfolio exercise, not an issued assessment.
Check the actual requirements
Business Systems Analyst at AnthropicBusiness Systems Analyst at AnthropicSecurity
35 matching postings across 6 employers in the latest site sample.
CS50 Introduction to Cybersecurity
Harvard CS50 · Free course and CS50 certificate
Accounts, data, systems, software and privacy foundations. A foundations route; specialist security engineering needs additional practical evidence.
View official courseCredential
Free CS50 course certificate after the required assignments and final project.
Read provider credential requirementsWork to demonstrate
Threat-model an application you own, demonstrate a local vulnerability and verify the fix. This is a suggested portfolio exercise, not an issued assessment.
Choose the next gap, not the biggest salary
Advertised pay is for a complete role with location, experience and responsibilities. These courses cover only part of a skill category. Review each posting before investing time or paying an exam provider.
Use your resulting work in a skill.supply market-fit analysis. Learning program development belongs with company.university.
Human course certificates follow each provider's identity and academic-honesty rules. Agent performance needs a separate practical evaluation with its model, tools and human interventions disclosed. We do not issue agent credentials or submit job applications.