Senior Software Engineer

Hyre AI; Greater London; On-site; GBP 60,000 - 100,000; Full time

Job summary

An ambitious early-stage cybersecurity start-up is seeking a Senior Backend Engineer to help redefine online trust and identity. In this role, you will design and scale critical backend systems and high-throughput APIs that power AI-driven fraud detection. This innovative firm offers a unique opportunity to shape systems that prevent fraud before it starts, providing a front-row seat in a mission-driven environment. If you're a resourceful engineer with a passion for making the internet safer, this position is perfect for you!

Benefits

Competitive salary

Stock options

Opportunity to shape systems

Qualifications

• 4+ years of backend development experience with strong proficiency in GoLang and Node.js.
• Experience with cloud platforms like GCP or AWS is essential.

Responsibilities

• Design and scale high-throughput APIs and microservices for fraud detection.
• Work with teams to build backend systems that ensure internet interactions can be trusted.

Skills

GoLang

Node.js

DevOps principles

Python

Tools

Kubernetes

GCP

AWS

Job description

This range is provided by Hyre AI. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from Hyre AI

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

What's in it for you:

• Competitive salary (let’s talk!)
• Stock options – share in their growth
• The opportunity to shape systems that stop fraud before it starts and front-row seat in redefining online trust and identity

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Engineering and Information Technology

• Industries

  Computer and Network Security and Financial Services

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