2025 was a year of significant realignment in UK tech hiring. AI roles surged while some traditional engineering positions plateaued. Here's what the data shows — and what it means for your career in 2026.
The Big Picture
UK tech job postings grew by 12% year-on-year in 2025, but that headline number masks a significant polarisation. AI and ML roles grew by over 60%, while traditional web development roles saw single-digit growth or slight decline. Companies are actively restructuring their engineering teams around AI capabilities.
The most important trend: companies are no longer treating AI as a separate department. AI is being embedded into every engineering team, which means every software engineer now needs at least baseline AI literacy.
The Roles That Grew Fastest in 2025
- AI Application Engineer — up 85% YoY. Building products on top of LLM APIs.
- MLOps Engineer — up 72%. Productionising and monitoring ML systems at scale.
- Prompt Engineer / AI Product Specialist — up 65%. A new category entirely.
- AI Safety Researcher — up 55%. Growing as regulation looms.
- Data Engineer — up 35%. AI needs clean data pipelines more than ever.
UK AI Salary Benchmarks 2025
Based on analysis of hundreds of live UK job postings and recruiter data:
| Role | London | UK (ex-London) | YoY Growth |
|---|---|---|---|
| Junior AI/ML Engineer | £35k–£50k | £28k–£42k | +18% |
| Senior AI Engineer | £90k–£130k | £75k–£110k | +22% |
| ML Engineer (Mid) | £65k–£90k | £55k–£78k | +15% |
| Data Scientist | £55k–£80k | £45k–£68k | +8% |
| Frontend Engineer | £55k–£85k | £45k–£70k | +5% |
| Backend Engineer | £60k–£90k | £50k–£75k | +7% |
| DevOps/SRE | £65k–£95k | £55k–£80k | +12% |
| Product Manager (Tech) | £70k–£110k | £60k–£95k | +10% |
Key Themes in 2025 Hiring
LLMs changed what "AI engineer" means
Two years ago, an AI engineer typically had a statistics or ML research background. Today, many companies are hiring software engineers with LLM API experience. The barrier to entry dropped significantly, but so did the clarity of what the role involves. Read job descriptions carefully.
Remote work consolidated
After post-pandemic fluctuations, most UK tech companies settled into stable hybrid policies of 2-3 days in-office. Fully remote roles exist but are now more competitive, concentrated in startups and US-headquartered companies hiring UK talent.
Hiring slowed for mid-level generalsts
Companies increasingly want either juniors (cheap, trainable) or seniors (autonomous, high-impact). Mid-level generalist engineers faced a tougher market in 2025. The lesson: specialise.