JavaScript developer salaries in London
What JavaScript roles actually advertise in London, measured from live vacancies on employer careers pages rather than survey responses.
These figures come from 26 vacancies that published a salary, out of 374 live JavaScript roles in London. Every one was read from the employer's own careers page — this is what companies are advertising, not what candidates report earning.
Where a range is advertised we take the top of the range, so read the median as the ceiling a typical employer is willing to reach. Contract day rates are annualised at 230 working days a year.
London against the rest of the UK
JavaScript roles in London advertise a median of £65,000, 30% above the UK-wide median of £50,000 (from 124 salaried roles nationally).
London accounts for 29.6% of the 1,265 live UK JavaScript roles. 48% of the London roles are advertised as remote, against 33% nationally — employers here lean more remote than the national picture.
JavaScript salary by seniority
| Level | Lower quartile | Median | Upper quartile | Roles |
|---|---|---|---|---|
| Mid-level | £50,000 | £50,000 | £65,000 | 255 |
| Senior | £65,000 | £65,000 | £75,000 | 50 |
| Lead / principal | £50,000 | £70,000 | £110,000 | 50 |
Contract versus permanent
| Basis | Lower quartile | Median | Upper quartile | Roles |
|---|---|---|---|---|
| Permanent | £50,000 | £65,000 | £70,000 | 49 |
See the live roles behind these numbers
Every figure on this page is computed from vacancies that are open right now. Browse them, or set an alert and we will email you when a new one appears.
374 live JavaScript jobs in LondonHiring for these roles?
Our guides for employers on finding and screening this kind of engineer.
JavaScript salaries by city
Related salary guides
How we measure this
We crawl UK employers' own careers pages, classify each vacancy against a published taxonomy, and read the salary exactly as the employer stated it. Nothing here is reposted from another job board, and nothing is modelled or estimated.