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Camille Mercier

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Principal Engineer, Electronic Arts - distributed systems · PCI DSS · idempotency

Works at
Electronic Arts
Location
Toronto, ON · ET (UTC-5)
Experience
10+ years experience
Education
Queen's University
Languages
English
Message Connect

Overview

I work on payments infrastructure at Electronic Arts in Toronto. Led the migration of 73 services to idempotency. Before that: Canadian Tire and OpenText. Most at home with PostgreSQL and PCI DSS. I teach a weekend class on idempotency.

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Answers in batches on Fridays

Skills
PCI DSSgRPCidempotencyPostgreSQLdistributed systems

Experience

  1. Principal Engineer
    Jun 2025 - Present
    Electronic Arts · 1 yr 5 mo · Full-time · Toronto, ON
    • Led or co-led 25 investments, 9 of them now at Series B or later.
    • Sit on 3 boards.
    • Previously an operator for 8 years before investing.
  2. Staff Backend Engineer
    Aug 2023 - Jun 2025
    Canadian Tire · 1 yr 10 mo · Full-time · Toronto, ON
    • Reduced cloud spend on payments platform by 27% in two quarters.
    • Led the migration of 49 services to idempotency.
  3. Staff Backend Engineer
    Nov 2021 - Apr 2023
    OpenText · 1 yr 5 mo · Full-time · Toronto, ON
    • Built the experimentation framework 28 product teams use to ship changes safely.
    • Shipped 17 launches on the payments platform team without a rollback.
  4. Backend Engineer
    May 2018 - Nov 2021
    Accenture · 3 yr 6 mo · Full-time · Toronto, ON
    • Cut p99 latency on the payments platform services from 541ms to 97ms.
    • Brought on-call pages for payments platform down from 35 a week to 3.
  5. Senior Backend Engineer
    Oct 2016 - May 2018
    Meta · 1 yr 7 mo · Full-time · Toronto, ON
    • Cut p99 latency on the payments platform services from 548ms to 121ms.
    • Led the migration of 42 services to idempotency.

References

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Education

  1. Queen's University
    BCom, Computer Science
    2010 - 2014

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