As the senior technical lead reporting to the CTO, you will own the architecture and delivery of high-performance Go microservices on AWS. You will set the technical bar for the engineering team, mentoring mid-level developers while building reliable infrastructure that powers sub-second credit decisions for a new generation of UK lenders.
Senior Product Engineer at infact
infact.io is building the UK's first real-time credit bureau, replacing decades-old batch processing with an API-first infrastructure that delivers live credit data at sub-second latency. Backed by £4m from AlbionVC, this seed-stage scale-up is looking for a Senior Product Engineer to serve as the team's most senior individual contributor, reporting directly to the CTO. If you have 5+ years of experience with Go and AWS and want to own the technical direction of a system reshaping financial services at the ground floor, this is your chance to lead high-stakes architecture in a lean, high-performing environment.
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Location
London, United Kingdom
Compensation
£85k-£120k + Equity
Company
Infact
Role overview
Software
Infact operates as the UK’s first real-time credit bureau, providing lenders with instant, accurate, and comprehensive credit information through a single API.
Their API-driven products are designed for the digital age, enabling lenders to search, report, and manage credit information in real time. Infact delivers advanced solutions for credit risk, fraud detection, affordability assessment, and reporting, focusing on up-to-date data, responsible lending, financial inclusion, and regulatory compliance.
Their platform serves regulated lenders in digital financial services, driving innovation by improving outcomes for consumers and credit providers while promoting fairness and transparency in credit reporting.
What you will do
- Design and scale high-performance Go microservices on AWS using Fargate, Lambda, and Aurora Postgres to handle sub-second latency for regulated B2B APIs.
- Act as the most senior technical voice in the engineering team, mentoring mid-level engineers through code reviews, pairing, and setting excellence standards.
- Drive critical architectural trade-offs across the data layer and API surface, balancing rapid delivery with the security and reliability required for fintech infrastructure.
Who this is a fit for
- You have 5+ years of commercial experience building and operating production-grade B2B API services, with deep technical expertise in Go (Golang).
- You possess a strong track record of scaling cloud-native systems on AWS, specifically working with managed services like DynamoDB, Aurora, and containerized workloads.
- You are an engineer who leads by example, elevating the craft of those around you while making pragmatic, responsible use of modern AI tooling like Claude and Bedrock.
Why this role is remarkable
- Ground-floor opportunity to build the core infrastructure of the UK’s first real-time credit bureau from scratch, replacing legacy systems that haven’t changed in decades.
- Backed by £4m in seed funding from AlbionVC, offering the stability of a funded startup with the high-impact ownership of a small, five-person engineering team.
- Direct reporting line to the CTO with zero layers of management or committees, giving you genuine autonomy over architecture, code quality, and technical strategy.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
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Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Infact wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.