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PhD Synthetic and Analytical Chemist, AI Expert (Remote, UK or US East Coast)
Posted Today by Weekday AI
Job OverviewWe are seeking highly skilled PhD-qualified chemists with strong expertise in synthetic and analytical chemi...
- Rate £100 per hour
- Category Outside
- Work type Remote
- Location United Kingdom
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AI Contract Rates in Cambridge: Day Rate Quartiles and Demand
Live market telemetry, compensation quartiles, and IR35 compliance benchmarks across the UK contract sector.
Median Daily Rate
£575/day
-17.9%
Interquartile Range
£465/day – £650/day
Middle 50% market distribution
Contract Engagement Split
47% Outside IR35
13% Inside IR35 engagements
Market Conditions and Compensation Trajectory
Procurement of independent AI specialists within the wider Cambridge district remains closely linked to strategic regional development programmes, enabling local project teams to achieve critical release milestones. Remuneration benchmarks across active Cambridge engagements reflect an established median day rate of £575/day, delivering a -17.9% differential against broader national averages. Interquartile rate analytics define a localised range from £465/day to £650/day. 47% of active postings are structured outside IR35 legislation. Figures summarise advertised pay on this hub to November 2026 and are market statistics, not a personal offer or guaranteed assignment rate.
Daily Rate Quartiles and Market Benchmarks
Values combine advertised day rates, stated IR35 outcomes, and sector labels from vacancies matching this hub. Quartiles use priced roles only.
| Metric | Value | What it shows |
|---|---|---|
| Median day rate | £575/day | Mid-market advertised pay for this hub |
| 25th percentile (P25) | £465/day | Lower-quartile priced vacancies |
| 75th percentile (P75) | £650/day | Upper-quartile priced vacancies |
| Outside IR35 share | 47% | Stated limited-company / outside SDS |
| Inside IR35 share | 13% | Stated PAYE / umbrella / inside SDS |
| Undetermined IR35 | 40% | Adverts that omit a published status |
| Leading sector | AI & Machine Learning (58%) | Largest hiring cluster in the sample |
| Priced sample | 24 roles | Vacancies used for the rate corridor |
| Regional rate band | a South East rate uplift | Location pricing context, not an SDS |
Statutory Standards and Frequently Asked Questions
Cambridge does not create a special IR35 code for AI work. The client SDS should name the Cambridge workplace and delivery model. An inside finding on a Cambridge AI brief typically deducts tax at source, while outside IR35 AI work in Cambridge is billed by a PSC. Local pay sits on a South East rate uplift, so a higher Cambridge headline rate can still be inside. Commuting into Cambridge does not, by itself, prove substitution or lack of control. Read the AI Cambridge contract for workplace, hours, and equipment clauses.
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