Senior Software Engineer (C#, JavaScript, .Net) - Global BigTech

Location London
Discipline: Technology
Salary: £126k to £140k basic per annum
Contact name: Dan Butterworth

Contact email: dan@principlehr.com
Job ref: 3760
Published: about 14 hours ago
The role: Software Engineer (C#, Python, JavaScript) - Global BigTech Giant 
UK Fully Remote (Contract)
Salary: £126k to £140k basic (PAYE, paid weekly, WITHIN IR35)
Duration: 6-month contract – to start ASAP (strong possibility of extension)

UK applicants ONLY – no relocation or sponsorship available – you must be fully clear to work in the UK!

Who & why: One of the world’s top tech firms is hiring a Software Engineer to support critical infrastructure behind next-gen virtual platforms. You’ll be owning dev tools, fixing live issues, keeping builds rock-solid, and working directly with high-calibre engineers across the UK and US.

The work is technical, fast-paced, and highly visible.

What You Must Have:
A min. of 8+ years’ experience within a similar role and level within similar Big Tech  organisations (Google, Amazon, Apple, Microsoft, Meta etc) - without this, you cannot be considered
Expert coding in C# (or Python, C++, JavaScript).
Deep understanding of build systems (Bazel/Buck a bonus).

What’s nice-to-have:
Unity or Android experience.
Full-stack development knowledge.

Serious engineers only. If you can’t build, debug, and own it — you needn’t apply.