Question 1

Platform Engineer vs Site Reliability Engineer - what is the actual difference?

Accepted Answer

Platform Engineers focus on build and operate the internal developer platform. Site Reliability Engineers focus on define and own slos and error budgets. 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 platform engineer or a site reliability engineer?

Accepted Answer

Both pools are active on Haystack. First shortlists land within 24 hours of kick-off for either role. Compensation varies by sector and seniority; we benchmark every offer against live UK, DE and US data.

Question 3

Can the same person cover both platform engineer and site reliability 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 platform engineer interview?

Accepted Answer

Anchor the rubric on Kubernetes, Terraform, Backstage. 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 site reliability engineer interview?

Accepted Answer

Anchor the rubric on SLOs, Observability, Incident response. As with the platform 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 platform engineers and site reliability 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	Platform Engineer	Site Reliability Engineer
Category	DevOps	DevOps
Mid-level UK base	£80k–£108k	Tailored
Senior UK base	£115k–£160k	Tailored
Primary focus	Build and operate the internal developer platform	Define and own SLOs and error budgets
Core skills	Kubernetes, Terraform, Backstage, ArgoCD	SLOs, Observability, Incident response, Kubernetes
First shortlist	24 hours	24 hours

Platform Engineer vs Site Reliability Engineer

Platform Engineer

Site Reliability Engineer

Platform Engineer vs Site Reliability Engineer - at a glance

Platform Engineer vs Site Reliability Engineer - common hiring questions

More role comparisons

Related comparisons

Brief Haystack on platform engineers or site reliability engineers - or both