IR35.org

Outside IR35 Event-driven architecture contracts in London

8 open outside IR35 Event-driven architecture contracts in London, typically £550–£680 a day.

Open contracts
8
Typical day rate
£550–£680Median £615, from 8 contracts stating a rate
Remote
0% of these contracts

At the median £615 a day over 220 working days, you'd take home about £80,599 a year outside IR35, or £75,421 inside IR35. Work out your own take-home pay

Skip to results

8 contracts found

  1. Senior Backend DeveloperHybrid

    Financial services organisation

    £500–£600/dayOutside IR35

    London · 6 months · Posted 5 days ago

    • Event-driven architecture
    • Java
    • Spring / Spring Boot
    • AWS
    • Microservices
    • +9 more
  2. Embedded Full Stack EngineerHybrid

    Morela

    £600–£700/dayOutside IR35

    London · 6 months · DV clearance · Posted 5 days ago

    • Event-driven architecture
    • Python
    • FastAPI
    • Django
    • Flask
    • +17 more
  3. Staff Engineer, Premium Finance IntegrationHybrid

    Well-established organisation in a highly regulated sector delivering services across the UK

    £550/dayOutside IR35

    London · Posted 6 days ago

    • Event-driven architecture
    • C#
    • .NET
    • SQL
    • CI/CD
    • +9 more
  4. Lead Data Architect / Modeller

    Fintech

    £700–£750/dayOutside IR35

    London · 3 months · Posted 6 days ago

    • Event-driven architecture
    • Data architecture
    • Data modelling
    • Snowflake
  5. Senior C# / Azure Engineer

    Data & AI consultancy in Wealth Management

    £650–£700/dayOutside IR35

    London · 3 months · Posted 15 days ago

    • Event-driven architecture
    • C#
    • .NET
    • Azure
    • REST APIs
    • +2 more
  6. TypeScript EngineerHybrid

    Large international travel and transport organisation

    £500–£550/dayOutside IR35

    London · Posted 21 days ago

    • Event-driven architecture
    • TypeScript
    • Node.js
    • React
    • Next.js
    • +10 more
  7. Enterprise ArchitectHybrid

    UK regulated bank specialising in cross-border payments and FX into emerging and frontier markets

    Up to £700/dayOutside IR35

    London · Posted 42 days ago

    • Event-driven architecture
    • Enterprise architecture
    • AWS
    • Cloud architecture
    • Microservices
    • +6 more
  8. Senior Java Architect – PaymentsHybrid

    Global financial services organisation undergoing banking transformation

    £550–£600/dayOutside IR35

    London · 6 months · Posted 51 days ago

    • Event-driven architecture
    • Java
    • Microservices
    • Swift
    • Spring / Spring Boot
    • +4 more

    4 adverts

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.