Senior Software Engineer

Hyre Ai; City Of London; Hybrid; GBP 70,000 - 80,000; Full time

Job summary

A leading cybersecurity firm in London is hiring a Senior Software Engineer to develop scalable APIs and systems for AI-driven fraud detection. Join a talented team committed to solving significant internet challenges while working in a hybrid model. The ideal candidate will have 3-5 years of experience in software engineering, with a strong foundation in Kubernetes and a problem-solving mindset. This position offers a competitive salary of £70,000 – £80,000, along with stock options and other benefits.

Benefits

Stock options

Employer-matched pension

Qualifications

• 3-5 years of professional experience in software engineering.
• Experiential knowledge in Kubernetes and CI/CD pipelines.
• Curiosity and ownership in project development.

Responsibilities

• Design and scale high-throughput APIs and microservices.
• Work on systems focusing on latency and reliability.
• Collaborate closely with teams to understand emerging threats.

Skills

Software engineering

Kubernetes

CI/CD pipelines

TypeScript

Go

Job description

Senior Software Engineer | Start-up | Cybersecurity | London | Hybrid

Hyre AI is partnering with a fast-growing, well-funded cybersecurity company on a mission to solve one of the biggest challenges on the modern internet: proving who's human in a world dominated by bots, scripts, and AI impersonators. Their technology protects some of the most trusted names in financial services and beyond, and they've just raised a multi-million seed round to accelerate growth. Now they're hiring a Senior Software Engineer to join a small, exceptional team building the future of online trust.

About the Role

As a Senior Software Engineer, you'll be at the core of how our client build and run their platform; you won't just be building features - you'll be laying the technical foundation that allows them to verify humanity at internet scale.

• Design and scale high-throughput APIs and microservices that power AI-driven fraud and bot detection engines.
• Work on systems where latency and reliability are critical.
• Work directly with founders, product, and research teams to deeply understand emerging threats, and build systems that turn detection insights into operational reality.
• Be encouraged to experiment, challenge convention, and bring ideas that raise the bar.

NB: Please note, this role requires 3-4 days on-site in the office, ~ 5 mins from Liverpool St Station.

Required Skills

• 3-5 years of professional experience in software engineering.
• Experience with TypeScript and/or Go is beneficial (but not mandatory).
• Strong foundation in Kubernetes and CI/CD pipelines.
• A resourceful, first-principles mindset; someone who thrives in ambiguity.
• Ownership, curiosity, and a commitment to building things that last.
• High‑energy, thoughtful problem‑solving, and a low‑ego approach to collaboration.
• Experience in an early‑stage start‑up or scaling environment would be a huge bonus.

Pay range and compensation package

• Competitive salary: £70,000 – £80,000
• Stock options – share in the company's growth
• Employer‑matched pension

Why Join this business

If you want to work on a deeply meaningful problem, build with exceptionally talented engineers, and play a pivotal role in scaling a product that sits at the intersection of cybersecurity, AI, and internet infrastructure, this is the kind of opportunity that appears once in a career.