Senior Software Engineer · Shawbrook Bank
James
Sedman
Backend engineer with 5+ years building scalable .NET systems across fintech and SaaS. I care about clean architecture, TDD, and delivering things properly. Based in Manchester.
Stack
Primary
C#, .NET Core, ASP.NET Web API, SQL
Cloud
AWS (ECS, Lambda, SQS), Azure, Docker, Terraform
Practices
Clean Architecture, DDD, TDD, API Design, CI/CD
Also used
Ruby on Rails, React, Grafana, Datadog
Experience
Shawbrook Bank
May 2026 – Present
Senior Software Engineer
Just getting started.
NerdWallet
Jun 2023 – Mar 2026
Software Engineer
Lead backend engineer for the UK team, owning end-to-end delivery of services handling
12M+ requests per month. Designed and built a shared API platform eliminating duplication
across the UK tech stack, delivered a mortgage comparison service across UK and Canadian markets,
and introduced DDD and TDD practices across the team. Also served as UK Security Champion.
Spektrix
Sep 2021 – May 2023
Software Engineer
Delivered features and internal tooling on a large-scale arts ticketing and CRM platform
serving 600+ client organisations across the UK, USA, and Canada.
Led the end-to-end migration to Google Analytics 4 across all client instances.
RELX / ICIS
Sep 2020 – Aug 2021
Software Engineer
Backend engineer on the ICIS subscriber portal, delivering new features to a global user base
and improving observability and CI practices across the team.
About
I've spent my career building backend systems in fintech and SaaS, and I enjoy both the architecture and design side as much as the implementation. I'm most at home working with .NET and C#, though I've worked across a range of stacks over the years.
I also speak Mandarin Chinese to HSK 6 / CEFR B2 level, and have a 1st class BSc in Computer Science from the University of Hull.