IR35.org

Inside IR35 Safety-critical systems contracts

6 open inside IR35 Safety-critical systems contracts, typically £225–£440 a day.

Open contracts
6
Typical day rate
£225–£440Median £385, from 5 contracts stating a rate
Remote
0% of these contracts

At the median £385 a day over 220 working days, you'd take home about £57,984 a year outside IR35, or £53,350 inside IR35. Work out your own take-home pay

Skip to results

6 contracts found

  1. Manufacturing TechnicianOn site

    Sovereign defence manufacturing

    £203–£223/day£27–£30/hrInside IR35

    Henlow · 12 months · SC clearance · Posted 68 days ago

    • Safety-critical systems
  2. Senior Systems EngineerHybrid

    Complex software-enabled systems development

    £375–£506/day£50–£67/hrInside IR35

    New Malden · 12 months · Posted 25 days ago

    • Safety-critical systems
    • Systems engineering
    • Requirements gathering
    • Performance testing

    2 adverts

  3. Systems Engineer - EMC/TEMPESTOn site

    Defence and Aerospace company

    £525/day£70/hrInside IR35

    Portsmouth · 6 months · DV clearance · Posted 6 days ago

    • Safety-critical systems
    • Systems engineering
    • Stakeholder management
  4. Landing Gear Systems EngineerOn site

    Defence and Aerospace company

    £225/day£30/hrInside IR35

    Filton · 6 months · Posted 6 days ago

    • Safety-critical systems
    • Systems engineering
    • PLC / SCADA

    2 adverts

  5. EC&I Hardware DesignerHybrid

    Leading engineering team delivering complex, safety-critical control and automation solutions within the nuclear industry

    Rate not statedInside IR35

    Warrington · 12 months · Posted 6 days ago

    • Safety-critical systems
    • Embedded systems
    • Electronics
    • CAD

    2 adverts

  6. Technical Business AnalystHybrid

    Airline operations software company

    £350–£420/dayInside IR35

    Hounslow · 12 months · Posted 5 days ago

    • Safety-critical systems
    • Business analysis
    • REST APIs
    • Requirements gathering
    • Process mapping
    • +1 more

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.