Question 1

Front End Engineer vs Mobile Engineer - what is the actual difference?

Accepted Answer

Front End Engineers focus on build responsive, accessible web interfaces. Mobile Engineers focus on build native or cross-platform mobile applications. The two roles are often confused because they sit next to each other in modern delivery teams, but the day-to-day work, the success metric and the interview rubric are not the same.

Question 2

Which is easier to hire - a front end engineer or a mobile engineer?

Accepted Answer

Both pools are active on Haystack. First shortlists land within 24 hours of kick-off for either role. Mid-level front end engineers anchor around £60k–£82k UK base, mobile engineers around £65k–£88k, so total cost over an 18-month horizon is the more useful comparison than headline pay.

Question 3

Can the same person cover both front end engineer and mobile engineer work?

Accepted Answer

Often partially. Senior generalists carry one as their primary discipline and one as supporting, but expect a 60/40 split rather than 50/50 - the deep work in either role rarely happens in the same week. If the workload sustains, hiring one of each is almost always the better long-term call.

Question 4

What skills should I screen for in a front end engineer interview?

Accepted Answer

Anchor the rubric on React, TypeScript, Next.js. We surface every Haystack profile with the specific tooling, levels and shipped-work examples so you can shortlist against a real skills bar, not buzzwords.

Question 5

What skills should I screen for in a mobile engineer interview?

Accepted Answer

Anchor the rubric on Swift, Kotlin, SwiftUI. As with the front end engineer role, the easiest way to compare candidates is a 90-minute paid take-home that mirrors real work - never a trivia quiz.

Question 6

Do you cover senior and lead-level front end engineers and mobile engineers?

Accepted Answer

Yes - the full ladder from junior through staff/principal in both. The kick-off call captures the level and shipped-work bar you need, and shortlists are filtered accordingly.

Dimension	Front End Engineer	Mobile Engineer
Category	Engineering	Engineering
Mid-level UK base	£60k–£82k	£65k–£88k
Senior UK base	£85k–£120k	£90k–£125k
Primary focus	Build responsive, accessible web interfaces	Build native or cross-platform mobile applications
Core skills	React, TypeScript, Next.js, Vue	Swift, Kotlin, SwiftUI, Jetpack Compose
First shortlist	24 hours	24 hours

Front End Engineer vs Mobile Engineer

Front End Engineer

Mobile Engineer

Front End Engineer vs Mobile Engineer - at a glance

Front End Engineer vs Mobile Engineer - common hiring questions

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