Senior Software Engineer

London
2 weeks ago
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Senior Backend Software Engineer - CyberSec / Start-Up

About the Company:

Hyre AI is recruiting for a Senior Backend Engineer to join a highly ambitious early stage cybersecurity start-up at a crucial time in their growth following a successful seed round.

Our client is on a mission to make the internet a safer place; their products aim to make sure that behind every click, login, and purchase - is a real human being.

If you're a scrappy engineer who wants a role with autonomy & impact, this role might just be for you!

What you'll be doing:

In this role, you won’t just be building features — you’ll be laying the technical foundation that allows for the verification of humanity at internet scale. You will:

  • Design and scale high-throughput APIs and microservices that power AI-driven fraud and bot detection engines.

  • Architect backend systems where latency and reliability are critical — because in this domain, milliseconds and edge cases mean the difference between catching an attack or missing it.

  • Work directly with founders, product, and research teams to deeply understand emerging threats — and build backend systems that turn detection insights into operational reality.

    Every architectural decision you make will be working towards a future where every internet interaction can be trusted.

    About you:

    Here’s the kind of person who our client would be excited to work with:

  • You’re resourceful and fast-moving: You know how to navigate ambiguity and move projects forward without needing a playbook.

  • You think from first principles: You break problems down to fundamentals, question assumptions, and build smart, original solutions when needed.

  • You act with ownership: You take full responsibility for outcomes, not just tasks. You step into gaps, solve problems decisively, and keep standards high.

  • You bring high energy and clear thinking: You approach challenges with curiosity, positivity, and focus — and you keep momentum even when things get hard.

  • You care about the work, not the ego: You argue the case when it matters, back your thinking with evidence, and adapt quickly when new information comes in.

  • You’re multi-dimensional: You're more than just your technical skills — you're intellectually curious, open-minded, and constantly sharpening your edge.

    Your experience:

    Here's some thoughts on the experience you'll need to be successful in this role:

  • You’ve honed your skills over at least 4 years’ experience in backend development and have strong proficiency in GoLang and Node.js

  • You’ve highly comfortable with DevOps principles; experience with Kubernetes would be a plus!

  • Exposure to cloud platforms, particularly GCP or AWS

  • Familiarity with other robust backend programming such as Python

  • Experience on the front-end, particularly JavaScript would be a bonus!

    What's in it for you:

  • Competitive salary (let’s talk!)

  • Stock options – share in their growth

  • Employer-matched pension plan

  • The opportunity to shape systems that stop fraud before it starts and front-row seat in redefining online trust and identity

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