Thinks in streams, not callbacks
RxJS is the part that separates an Angular developer from a JavaScript developer who has read the Angular documentation.
Hire a pro
MEAN Developer
Angular, Express, MongoDB and Node. The opinionated end of the JavaScript world: more structure out of the box, a steeper start, and a codebase that tends to look the same in year three as it did in month three.
Shortlist
Within 24 hours
Deployed
Inside 2 weeks
Seniority
4+ years, strong Angular
Rate
Flat monthly
Wrong fit
Replaced, not billed twice
What they do
Angular is a framework, not a library, and that is the point.
React hands you a rendering engine and asks you to decide everything else. Angular hands you the decisions. For a team that changes hands, that trade is often the right one.
Uses dependency injection properly
Which means testable services with clear boundaries, rather than a singleton with everything in it.
Keeps change detection under control
OnPush, immutable inputs and an understanding of why the application got slow when the list reached five hundred rows.
Structures the modules
Feature modules, lazy loading, and a shared module that does not quietly become a second application.
Owns the Node side too
Express API, Mongo access, and the same validation discipline the front end enforces.
What they know
The tools, grouped by what they are for.
Nobody on the bench knows all of this. We shortlist against what your problem actually needs, and tell you where the gaps are.
Front end
AngularTypeScriptRxJSNgRxAngular Material
API
Node.jsExpressNestJSJWT / sessions
Data
MongoDBMongooseAggregation pipelineIndexing
Quality
JasmineKarmaCypressStrict template checking
How we vet
Four exercises, all of them from real work.
No algorithm puzzles. Every exercise below is a task this role does in a normal week, and we watch the method more than the answer.
An RxJS problem with a memory leak
A component that subscribes and never unsubscribes. We want to see them find it and fix it with the operator rather than a manual teardown.
This is the single most common Angular failure.
Make a slow list fast
Five hundred rows and a sluggish interface. The fix is change detection strategy and trackBy, and we watch whether they profile first.
Module structure review
An application where everything lives in one module. Restructure it, and explain what each boundary buys.
NgRx: should this be in the store
Half the state in most NgRx applications should not be there. We are listening for judgement rather than enthusiasm.
Interview signals
Four questions for when you interview them yourself.
You interview every candidate we put forward, so these are yours to use. They separate somebody who has run this in production from somebody who interviews well.
Ask: how do you handle unsubscribing?
A strong answer
Uses takeUntilDestroyed or the async pipe by default, and can explain which subscriptions complete on their own and which do not.
A worrying answer
Manually stores subscriptions in an array. It works, it is noisy, and one missed component leaks for the life of the session.
Ask: when do you reach for NgRx?
A strong answer
When state is shared across distant parts of the application, or when the history of how it changed matters. Otherwise a service with a subject is smaller and clearer.
A worrying answer
Always, because it is the Angular way. The result is three files and forty lines of boilerplate to store a boolean.
Ask: the application feels slow after a data load. Where do you look?
A strong answer
Change detection first. Asks whether components are OnPush, whether inputs are being mutated, and whether a function is being called from the template.
A worrying answer
Starts optimising the API. Sometimes right, usually not, and it is the more expensive place to look first.
Ask: why Angular over React for this?
A strong answer
Answers in terms of team and lifespan, not features. Larger teams, longer-lived applications and higher turnover favour the framework that makes the decisions.
A worrying answer
Argues about performance benchmarks. Both are fast enough; that was never the real difference.
Honestly
When this is the right hire, and when it is not.
Ask for this when
Good fit
- An existing Angular codebase that needs someone who genuinely knows it.
- A larger team where consistency matters more than freedom.
- Enterprise applications with long lifespans and changing staff.
Ask for something else when
Poor fit
- A small prototype where the framework overhead is most of the work.
- A React team. Do not mix the two in one product.
- A marketing site. This is a heavy tool for a light job.
Questions
Before you ask for a shortlist.
It is less fashionable than React and still very widely deployed, particularly in large organisations. The signals and standalone component work of recent versions have made it considerably lighter. For a long-lived internal application it remains a defensible choice.
Usually within a couple of weeks, and it is a common request. The other direction is slower, because RxJS and dependency injection are genuinely new concepts rather than different syntax.
Yes, and the honest advice is usually a rewrite rather than an upgrade, because the two are different frameworks that share a name. We will scope both and let you choose.
Next step
Describe the problem, not the job title.
Thirty minutes, and a shortlist within a day. If a mean developer is the wrong hire for what you described, you will hear that instead.