Cerys Taylor

S

Senior Backend Engineer at Marble Data · Payments infrastructure

Marble Data
Leeds, UK · GMT (UTC+0)
3+ years experience
University of Manchester
English
Messaging unavailable

Overview

Currently at Marble Data, where I work on payments infrastructure. Mentored 7 engineers through their first promotion. Built the experimentation framework 39 product teams use to ship changes safely. Previously at Monzo. Most at home with Go and distributed systems. Volunteer coding coach for school students.

Good reasons to reach out
  • Second opinions on PostgreSQL decisions
  • Questions about payments infrastructure
  • Thoughtful intros to people in my field
Please don't message about
  • Agency or outsourcing pitches
  • Generic networking requests

Replies on weekday evenings

Skills
PCI DSSPostgreSQLJavadistributed systemsGo

Experience

  1. Senior Backend Engineer
    May 2025 - Present
    Marble Data · 1 yr 5 mo · Full-time · Leeds, UK
    • Built the experimentation framework 38 product teams use to ship changes safely.
    • Designed the reconciliation system that matches 2 million transactions a day.
    • Wrote the distributed systems service that now handles 84 million requests a day.
  2. Backend Engineer
    Aug 2023 - Mar 2025
    Monzo · 1 yr 7 mo · Full-time · Leeds, UK
    • Brought on-call pages for payments platform down from 19 a week to 3.
    • Cut p99 latency on the payments platform services from 305ms to 77ms.

Projects

Side project: a reading list app
2024

Built with distributed systems and PCI DSS. 184 people used it last year.

References

No references yet.

Education

  1. University of Manchester
    BSc, Computer Science
    2020 - 2023

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