Prove your Angular skills
Angular is built for large teams and long-lived apps, so the useful question is how well you structure one. Lemma records that through live sessions, adaptive assessments and repositories you connect.
What Angular competence looks like
A competent Angular developer keeps components thin and moves logic into injectable services. They understand dependency injection scopes, know why change detection runs and when OnPush helps, and can find the subscription that is leaking memory. Signals and observables are each used where they fit.
They are fluent in RxJS for real problems such as typeahead search, retries and combining streams, and they unsubscribe or use the async pipe by habit. They write typed reactive forms with clear validation, lazy-load feature routes, and keep a large module or standalone structure that a new team member can navigate.
Angular architecture review in a live session
60 min · Learning · with Zara Q.
Zara Q. rated the session
Practitioner · after the call
Clear reasoning on components and templates. Talked through trade-offs first.
Components and templates
Inputs, outputs, content projection and template syntax used to keep components small and focused.
Dependency injection
Providers, injection scopes and services that hold logic and state outside the component tree.
RxJS and observables
Operators for search, polling and retries, plus clean subscription handling to avoid leaks.
Change detection and signals
Default versus OnPush detection, signals, and diagnosing why a view updates too often.
Reactive forms
Typed form groups, custom validators, async validation and clear error states.
Routing and lazy loading
Feature routes, guards, resolvers and splitting bundles so large apps load quickly.
What counts as evidence of Angular skills?
Listing Angular on a profile proves nothing on its own. What counts is a component you shipped, a session where someone watched you debug one, or a test you passed. These are the records Lemma can hold for your Angular skill, and where each one comes from. See the evidence methodology for how each source is weighed.
Angular
Mei L. · SCI recomputed 9 Oct
Evidence · 4 entries
- Rated 5.0
Angular architecture review in a live session
Live session · 9 Oct
- Level 7.2
Adaptive Angular assessment
Adaptive assessment · 2 Oct
- Verified
An Angular repository via GitHub
GitHub connector · 24 Sep
- Practice
RxJS practice with the AI tutor
AI tutor practice · 11 Sep
Angular architecture review in a live session
Walk a practitioner through a feature's components, services and data flow, or build one together. They rate how you use dependency injection and RxJS.
Adaptive Angular assessment
Scenario questions cover change detection, observables and forms. Harder rounds describe a leaking subscription or a stale view, and you pick the right fix.
An Angular repository via GitHub
Connect a repository or commit, such as a migration to standalone components or signals. Lemma checks it exists and that you have access.
RxJS practice with the AI tutor
Drill operator choice and stream composition with exercises that adapt to you. Drills add a small, capped amount to practice; they build fluency rather than prove it.
How is an Angular skills test run on Lemma?
The Angular test is adaptive: 15 to 25 questions, each picked from how you answered the last, built around real interface bugs rather than trivia. Its result joins your live sessions and linked repositories or deployments in your Angular SCI, which also weighs how recent the evidence is.
Memory grows each time a dialog opens and closes. It subscribes to a service stream in ngOnInit. What fixes it?
- ASwitch to OnPush change detection
- BCall detectChanges() after each emit
- CMove the subscription to the constructor
- DUnsubscribe on destroy or use the async pipe
Review a feature live
In a session, a practitioner explores how you structure an Angular feature: what lives in services, how streams flow and how change detection is configured. They rate the session afterwards.
Pass the adaptive assessment
Questions adapt as you go and cover components, dependency injection, RxJS, forms and routing. Each is a realistic scenario with a time limit, and harder ones count for more.
Connect your codebase
Link GitHub work so your sessions and assessment sit beside a real Angular project. Keep practising to keep the skill fresh on your Passport.
Angular skills: common questions
What Angular skills do enterprise teams look for?
How do I prove RxJS skills specifically?
Do I need to learn signals if I already know RxJS?
How do I show Angular skills when my projects are internal?
Skills related to Angular
Browse the skills directoryTypeScript
Show that your types catch real bugs instead of just silencing the compiler.
Evidence for TypeScriptJavaScript
Evidence that you understand how JavaScript runs, not just how to write its syntax.
Evidence for JavaScriptNode.js
Evidence of how you build and debug Node.js services, from the event loop to production errors.
Evidence for Node.jsGraphQL
Show how you design GraphQL schemas and resolvers that stay fast and safe.
Evidence for GraphQL
Start your Angular evidence record.
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