Senior Front End Engineer Interview Questions

688 senior front end engineer interview questions shared by candidates

single tech interview (DreamDev): - advanced angular - softskills - SOLID - tests - most notable work history 1st tech interview (client): Topics they questioned: - JS: closure, event loop - angular: pipes, injection, forms, property binding, services - typescript: generics, - rxjs: specific example of an input search - live coding - ngrx: overall understanding and illustrating knowledge - live coding General: POO, SOLID 2nd tech interview (client): - HTML, semantic, accessibility (WCAG) - inheritance in JS (prototypes) - closure (and relation to security or private scope) - event loop - injection and injection tokens in Angular - how JS handles set interval and timeout (browser api) - CSS vs SCSS (variables key differences) - web vitals, performance (without angular) - (kpis like TTI and FCP) - bundle size (how to identify/reduce increased bundle size caused by third party) - how to have conditional types in typescript - content projection, template, and template outlet - ng zone and why Angular is trying to be zoneless - how the browser recognizes recent changes when using angular serve (webpack bundle hashes avoiding cache)
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Senior Front End Engineer

Interviewed at Dreamdev Technologies

3.6
Aug 7, 2025

single tech interview (DreamDev): - advanced angular - softskills - SOLID - tests - most notable work history 1st tech interview (client): Topics they questioned: - JS: closure, event loop - angular: pipes, injection, forms, property binding, services - typescript: generics, - rxjs: specific example of an input search - live coding - ngrx: overall understanding and illustrating knowledge - live coding General: POO, SOLID 2nd tech interview (client): - HTML, semantic, accessibility (WCAG) - inheritance in JS (prototypes) - closure (and relation to security or private scope) - event loop - injection and injection tokens in Angular - how JS handles set interval and timeout (browser api) - CSS vs SCSS (variables key differences) - web vitals, performance (without angular) - (kpis like TTI and FCP) - bundle size (how to identify/reduce increased bundle size caused by third party) - how to have conditional types in typescript - content projection, template, and template outlet - ng zone and why Angular is trying to be zoneless - how the browser recognizes recent changes when using angular serve (webpack bundle hashes avoiding cache)

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