What is the average TypeScript Developer salary in the UK?

UK Tech Market Guide — 2025

TypeScript Developer Salary UK 2025 — Permanent, Contract & Day Rates

💷 2025 GBP🇬🇧 UK Market⚖️ IR35🏙️ City📊 Seniority

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Last updated: June 2025 • 7 min read • Written by: ClickMasters HR Team • Reviewed by: Market data reviewed annually

Direct Answer

TypeScript Developer salaries in the UK range from £32,000 (junior/mid) to £640–£850/day (senior/lead). TypeScript is now the baseline expectation for JavaScript roles — plain JavaScript CVs are increasingly screened out at senior level. TypeScript + React + Node.js (full-stack) commands the highest premium. Strict TypeScript (strict: true config) expertise is a positive signal. TypeScript + AI/ML integration is the fastest-growing TypeScript specialism in 2025.

Market Outlook

TypeScript Developers are in consistent demand across UK software development — TypeScript has become the standard for professional JavaScript in the UK, replacing plain JavaScript for most new projects. The role encompasses frontend (React/Next.js), backend (Node.js/Fastify), and full-stack TypeScript development.

Salary benchmarks by Seniority

Seniority

Permanent Salary

Day Rate (Outside IR35)

Annual Equivalent

Junior (0–2 yrs)

£32,000–£48,000

£250–£380/day

£46,650–£70,908

Mid-Level (3–5 yrs)

£48,000–£78,000

£380–£540/day

£70,908–£100,764

Senior (6–10 yrs)

£78,000–£112,000

£510–£720/day

£95,166–£134,352

Principal/Lead (10+ yrs)

£105,000–£150,000

£640–£850/day

£119,424–£158,610

IR35 Tax Position

Day rates assume outside IR35. Inside IR35 contractor day rates in the UK are typically 15–25% higher to compensate for the lack of tax efficiency and additional payroll costs. ClickMasters engineers are directly employed by us, representing **zero IR35 risk** for clients.

FAQs

Frequently Asked Questions

Everything you need to know about typescript developer salary standards.

Approximately £78,000–£112,000 mid-level. Senior: £78,000–£112,000. London +20–30%.

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