Sean Carroll

S

Principal Engineer at Just Eat Takeaway · Developer tools

Just Eat Takeaway
Birmingham, UK · GMT (UTC+0)
11+ years experience
University of Southampton
English
Open to work
Messaging unavailable

Overview

I've spent 14 years on developer tools - first at Sky, now at Just Eat Takeaway. Moved 69% of developer experience traffic off a legacy monolith without a customer-facing incident. Before that: Morgan Stanley and Wise. Most at home with Rust and compilers.

Good reasons to reach out
  • Roles in developer infrastructure
  • Second opinions on compilers decisions
  • Speaking or podcast invitations
Please don't message about
  • Fund-of-funds solicitations
  • Agency or outsourcing pitches
  • Courses and coaching offers

Fastest replies in the morning

Skills
GraphQLLSPVS Code extensionsCLI designTypeScriptRustcompilers
Open to workLooking for a role
closes in 3 months

Lead Software Engineer roles in fintech - Birmingham or remote

Target roles
Lead Software Engineer
Level
Senior
Industries
Developer tools, Healthtech
Work mode
Remote
Available
From next quarter
Work authorization
Authorized to work in the UK
What I'm looking for
Early-stage company (Series B) where developer infrastructure is core to the product.
Not interested in
Agencies and outsourcing firms

14 years in developer tools. Strongest at TypeScript and Rust. Can start in about six weeks.

Birmingham, UK · remote OKcompilerscli designrust
Open

Experience

  1. Principal Engineer
    Jul 2025 - Present
    Just Eat Takeaway · 1 yr 3 mo · Full-time · Birmingham, UK
    • Sit on 2 boards.
    • Led or co-led 31 investments, 4 of them now at Series B or later.
    • Previously an operator for 10 years before investing.
  2. Engineering Manager
    Mar 2022 - Jul 2025
    Morgan Stanley · 3 yr 4 mo · Full-time · Birmingham, UK
    • Mentored 4 engineers through their first promotion.
  3. Staff Software Engineer
    Apr 2020 - Mar 2022
    Wise · 1 yr 11 mo · Full-time · Birmingham, UK
    • Reduced cloud spend on developer experience by 34% in two quarters.
    • Moved 85% of developer experience traffic off a legacy monolith without a customer-facing incident.
  4. Software Engineer
    Feb 2018 - Apr 2020
    BBC · 2 yr 2 mo · Full-time · Birmingham, UK
    • Cut p99 latency on the developer experience services from 822ms to 41ms.
    • Wrote the VS Code extensions service that now handles 54 million requests a day.
  5. Software Engineer
    Feb 2016 - Feb 2018
    Sky · 2 yr · Full-time · Birmingham, UK
    • Cut p99 latency on the developer experience services from 871ms to 173ms.

References

No references yet.

Education

  1. University of Southampton
    MEng, Mathematics
    2015 - 2017
  2. University College Dublin
    BSc, Mathematics
    2009 - 2012

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