Question 1

Is Bun or Deno easier to hire for in 2026?

Accepted Answer

Both Bun and Deno have active talent pools on Haystack. We see first shortlists for Bun and Deno land within 24 hours of kick-off, with the median Bun hire closing in 14-21 days alongside comparable Deno roles.

Question 2

What does a Bun developer cost vs a Deno developer?

Accepted Answer

Mid-level Bun engineers anchor around £70k–£90k UK base, with seniors reaching £95k–£135k. Deno engineers sit around £70k–£90k mid and £95k–£135k senior. German bands run 5-20% higher in EUR and US bands 40-50% higher in USD.

Question 3

Which ecosystem libraries should I screen for - Bun or Deno?

Accepted Answer

For Bun we look for working experience with Bun, TypeScript, Hono. For Deno the equivalents are Deno, Deno Deploy, Fresh. Both ecosystems get surfaced on every Haystack profile so you can filter on exact tooling.

Question 4

Can the same engineer cover both Bun and Deno?

Accepted Answer

Often yes - particularly when both stacks live in the same category (Backend vs Backend). On Haystack we let you require both as primary or secondary skills; senior generalists typically carry one as their main stack and one as supporting.

Question 5

Should I bet on Bun or Deno for a greenfield project?

Accepted Answer

Pick on hiring depth, your team's current strengths and the ecosystem fit. Bun suits bun-based http services and tooling; Deno suits edge services on deno deploy and cloudflare-compatible runtimes. We can shortlist both in parallel so you can interview against the same brief.

Question 6

Do you cover senior and staff Bun and Deno engineers?

Accepted Answer

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

Dimension	Bun	Deno
Category	Backend	Backend
Mid-level UK base	£70k–£90k	£70k–£90k
Senior UK base	£95k–£135k	£95k–£135k
Best for	Bun-based HTTP services and tooling	Edge services on Deno Deploy and Cloudflare-compatible runtimes
Core ecosystem	Bun, TypeScript, Hono, Elysia	Deno, Deno Deploy, Fresh, Hono
First shortlist	24 hours	24 hours

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Bun vs Deno - common hiring questions

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