At a Glance
- Tasks: Design and scale high-performance Go microservices on AWS for real-time credit decisions.
- Company: Join infact, a pioneering fintech startup transforming the credit industry.
- Benefits: Competitive salary, equity options, and the chance to shape a groundbreaking product.
- Other info: Enjoy autonomy, mentorship opportunities, and a dynamic startup environment.
- Why this job: Be a key player in building the UK's first real-time credit bureau from the ground up.
- Qualifications: 5+ years in B2B API services with expertise in Go and AWS.
The predicted salary is between 85000 - 120000 £ per year.
infact.io is a seed‑stage London fintech that raised £4m from AlbionVC to build the UK's first real‑time credit bureau. They provide API‑first infrastructure that connects directly to financial data sources, enabling lenders to access live credit signals and move away from stale, batch‑processed data.
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.
Location: London, UK
What makes this role 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.
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.
The ideal candidate:
- 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.
Senior Product Engineer (£85k–£120k + Equity) at infact employer: Jack & Jill
At infact, we pride ourselves on being an innovative fintech startup that offers a unique opportunity to shape the future of credit assessment in the UK. Our collaborative work culture fosters creativity and autonomy, allowing you to take ownership of your projects while benefiting from direct mentorship from our CTO. With competitive salaries, equity options, and the chance to work in a dynamic environment in London, we are committed to supporting your professional growth and making a meaningful impact in the financial sector.
