Contract Senior Software Engineer – Cyber Risk Platform (Outside IR35)
3-6 month initial term | Remote (UK) | Start ASAP
A venture-backed cyber start-up is rebuilding its flagship platform a SSO tool integrating other solutions with the scope to integrate their own AI driven analytics tools.
The mission – next six months
* Ship an MVP: implement secure single sign-on between two third-party products to create the initial gateway.
* Design the data layer: map APIs so risk and compliance metrics flow into a unified dashboard.
* Prototype an LLM: lay foundations for a custom model that can rank and interpret risk data.
You’ll steer technical choices, write production code, and set the standards the future team will follow
What you’ll bring
* Senior-level .NET engineering with AWS back-end skills.
* Track record in “zero-to-one” SaaS builds—ideally as a founding engineer.
* Comfortable owning architecture, delivery, and CI/CD solo before scaling a team.
* Fluency with modern API design and GitHub workflows.
* Curiosity for AI tooling and the pragmatism to use it to ship faster.
Nice to have: experience embedding LLMs or rules engines into compliance tools.
Why join?
* Green-field scope: rewrite what hasn’t worked, choose the stack that will.
* Direct impact: report to the founders; your decisions shape product, budget, and hiring roadmap.
* Future upside: Opportunity to convert to perm Founding Engineer or long term contract.
Rate is up to £600 per day Outside of IR35