Dex
Software Engineer (up to £100k)
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About the Role
This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process.
If you're interested sign up to Dex to apply.
Dex is an AI recruiter agent that helps you run your job search. Tell Dex your stack, seniority, and what you want to build. We will manage your applications and surface other opportunities that are a fit.
The Role
This company is building the intelligence layer for payment fraud. They're tackling a hard problem: orchestrating real-time evidence gathering from messy sources, synthesizing it with AI, and delivering confident verdicts fast enough for major UK banks. Backed by leading VCs, their ambition is to scale this protocol across billions of global transactions.
You'll join a small, high-calibre engineering team, owning the core of this system. This means end-to-end responsibility for the APIs and UIs banks use, the orchestration layer coordinating diverse data, and the AI agents driving live investigations. This isn't a feature factory; it's a chance to design, build, ship, and iterate on critical infrastructure.
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The Work
- Design and build the APIs and UIs that integrate a real-time investigation engine into major bank payment flows.
- Architect and implement the orchestration layer, coordinating evidence from heterogeneous, often unstructured, data sources.
- Develop and deploy AI agents that drive live fraud investigation flows, ensuring rapid, confident verdicts.
- Ensure 24/7/365 uptime for critical, fault-tolerant distributed systems handling billions of transactions.
- Drive product outcomes, translating ambiguous problems into shippable solutions without waiting for perfect specs.
What You Bring
- 5+ years of engineering experience, ideally in an early-stage environment where you owned outcomes, not just tickets.
- Proven track record building fault-tolerant distributed systems with critical uptime requirements (24/7/365).
- A strong product ownership instinct: you identify the smallest useful thing to ship and drive it to completion.
- Proficiency in Python and TypeScript/React. You're comfortable with GCP, Terraform, and SQL, but your systems judgment is paramount.
- Comfort making and defending consequential architecture decisions in a fast-moving, small team.
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Why Apply Through Dex
This is a rare, high-impact engineering role at the heart of a critical system. These opportunities are often oversubscribed and hard to find. Apply through Dex to cut through the noise. We'll brief you fully on the company and role, helping you stand out and skip the cold application process.
If you're interested, sign up to Dex to apply - https://jobs.meetdex.ai/jobs/0faee444-1400-471d-a9f9-f78ca7ea090d
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