IR35.org

Inside IR35 JavaScript contracts

13 open inside IR35 JavaScript contracts, typically £475–£700 a day.

Open contracts
13
Typical day rate
£475–£700Median £500, from 13 contracts stating a rate
Remote
0% of these contracts

At the median £500 a day over 220 working days, you'd take home about £69,932 a year outside IR35, or £66,110 inside IR35. Work out your own take-home pay

Skip to results

13 contracts found

  1. C# Software Engineer

    Market-leading Defence and Aerospace company

    £488/day£65/hrInside IR35

    Stevenage · 12 months · SC clearance · Posted 39 days ago

    • JavaScript
    • C#
    • C++
    • Agile
    • CI/CD
    • +4 more

    3 adverts

  2. VP Full Stack EngineerOn site

    Financial technology company

    £632–£750/dayInside IR35

    London · 12 months · Posted 35 days ago

    • JavaScript
    • Angular
    • TypeScript
    • Java
    • Solidity
    • +2 more
  3. Front End DeveloperHybrid

    Leading global retail organisation

    £650–£750/dayInside IR35

    London · 6 months · Posted 32 days ago

    • JavaScript
    • Agile
    • HTML / CSS
  4. Senior .NET DeveloperHybrid

    Global Markets collateral business

    £700–£750/dayInside IR35 (implied)

    Bromley · 12 months · Posted 29 days ago

    • JavaScript
    • C#
    • .NET
    • REST APIs
    • Angular
    • +3 more
  5. SC Cleared Tester (Performance)Hybrid

    Not named in advert

    £450–£475/dayInside IR35

    Yorkshire and the Humber · SC clearance · Posted 29 days ago

    • JavaScript
    • Performance testing
    • Observability / monitoring
    • Grafana
    • Splunk
    • +7 more
  6. SC Cleared Lead Automation EngineerHybrid

    £475–£525/dayInside IR35

    London · SC clearance · Posted 29 days ago

    • JavaScript
    • Test automation
    • API testing
    • Performance testing
    • Process improvement
    • +3 more
  7. IBM Netcool / Observability Technical LeadHybrid

    Leading global financial institution

    £750–£830/dayInside IR35

    London · Posted 28 days ago

    • JavaScript
    • Observability / monitoring
    • Incident management
    • ServiceNow
    • SQL
    • +5 more

    2 adverts

  8. Full Stack Developer - Python / JavaScriptHybrid

    Global retail business

    £650–£750/dayInside IR35

    London · 6 months · Posted 25 days ago

    • JavaScript
    • Python
    • Django
    • Flask
    • TypeScript
    • +7 more
  9. Senior Frontend DeveloperHybrid

    Digital team

    £500–£700/dayInside IR35

    South East · 6 months · Posted 24 days ago

    • JavaScript
    • React
    • Next.js
    • GraphQL
    • REST APIs
    • +5 more
  10. Frontend Developers (Design-Focused) Jnr/Senior - BankHybrid

    Bank

    £400–£600/dayInside IR35

    London · 6 months · Posted 20 days ago

    • JavaScript
    • HTML / CSS
    • Accessibility (WCAG)
    • REST APIs
    • Design systems
    • +1 more
  11. Frontend Developer - Once or twice a week onsite in Manchester, Leeds or NewcastleHybrid

    Government

    £430/dayInside IR35

    Greater Manchester · 12 months · Posted 8 days ago

    • JavaScript
  12. Integration Engineer - SC Clearance RequiredHybrid

    £400–£450/dayInside IR35

    Bristol · SC clearance · Posted 4 days ago

    • JavaScript
    • Cloud native
    • CI/CD
    • Docker
    • Microservices
    • +6 more
  13. AI Product EngineerHybrid

    £250–£700/dayInside IR35

    Belfast · Posted yesterday

    • JavaScript
    • React
    • TypeScript
    • Python
    • Git / GitHub

Contracts come from job boards and employers' own careers sites, updated hourly. IR35 status is as stated in each advert: always confirm it with the hirer.

Disclaimer: calculations are estimates only and not financial or tax advice. See the terms.

Copyright © 2026 IR35.org. All rights reserved.