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Engineering

Skillspace rates 66,700 Engineering skills for AI agents in 9 teams and 84 categories; 10,452 are launch-quality. The biggest categories are Change & PR review (2,310 skills), Application security (1,926) and Codebase mapping & onboarding (1,688).

Backend & APIs 5,172 skills

API design & implementation 821 skills
Backend frameworks 1,208 skills
Databases & SQL 1,544 skills
Auth & identity 516 skills
Background jobs & messaging 493 skills
Payments & billing integration 337 skills
Backend performance & caching 253 skills

Frontend & Web 6,476 skills

React & UI frameworks 690 skills
Web app frameworks & SSR 481 skills
CSS & styling 487 skills
Web performance & accessibility 533 skills
Frontend state & data fetching 423 skills
Component libraries & UI kits 993 skills
Component & screen scaffolding 624 skills
Design systems & theming 634 skills
Design-to-code & prototyping 355 skills
UI design craft & review 792 skills
Pages & visual deliverables 464 skills

Mobile 1,746 skills

iOS development 610 skills
Android development 344 skills
Cross-platform mobile 707 skills
Mobile performance & profiling 85 skills

Infrastructure & DevOps 9,155 skills

Cloud platforms 858 skills
Containers & Kubernetes 816 skills
Infrastructure as code 496 skills
Observability & incident response 1,248 skills
Servers, networking & Linux 622 skills
Release cutting & versioning 1,517 skills
Changelogs & release notes 672 skills
Build systems & CI pipelines 1,176 skills
Publishing & deployment 999 skills
Dependency & version upgrades 751 skills

Security Engineering 4,987 skills

Application security 1,926 skills
Penetration testing & red team 1,668 skills
Secrets & supply chain 456 skills
Hardening & security compliance 390 skills
Blue team & detection 547 skills

Quality & Testing 14,133 skills

End-to-end & browser testing 909 skills
Change & PR review 2,310 skills
Review feedback & PR process 692 skills
Automated checks & quality gates 1,079 skills
Codebase audits & code health 769 skills
Non-code artifact review 239 skills
Test authoring & frameworks 1,632 skills
Test-driven development 382 skills
Integration & environment testing 1,387 skills
Test suite operations & coverage 595 skills
Test strategy & case design 428 skills
Root-cause investigation 559 skills
Bug triage & fixing 682 skills
Runtime diagnostics & profiling 995 skills
Build, CI & test failure triage 635 skills
System & environment troubleshooting 840 skills

Developer Productivity & Architecture 17,582 skills

Developer environment & CLI 1,453 skills
Code generation & scaffolding 1,178 skills
Engineering planning & specs 750 skills
Codebase mapping & onboarding 1,688 skills
System design & architecture decisions 504 skills
Design patterns & component architecture 993 skills
Codebase structure & module boundaries 372 skills
Refactoring & code quality 879 skills
Coding standards & language idioms 803 skills
Migrations, upgrades & porting 848 skills
Commits & pushing 860 skills
Pull requests & shipping 1,300 skills
Branching, merging & history 890 skills
Issues & backlog tracking 1,010 skills
Repository setup & general VCS operations 530 skills
Docs writing & content 1,020 skills
API & code reference docs 308 skills
Decision records & design docs 367 skills
Docs site & publishing 234 skills
Docs quality & drift control 1,051 skills
Doc lookup & research 544 skills

Programming Languages 1,923 skills

Python 244 skills
JavaScript & TypeScript 373 skills
Go, Rust & systems languages 562 skills
JVM & .NET 287 skills
Other languages 457 skills

Specialised Engineering 5,526 skills