Sarah Riley

S

Director of Engineering, Comcast - OpenAPI · Redis · REST

Comcast
Philadelphia, PA · ET (UTC-5)
11+ years experience
University of Pennsylvania
English
Advising
Messaging unavailable

Overview

Currently at Comcast, where I lead API platforms with a team of 50. Cut p99 latency on the public API services from 889ms to 56ms. Shipped 22 launches on the public API team without a rollback. Most at home with Redis and REST.

Good reasons to reach out
  • Advice on API platforms
  • Speaking or podcast invitations
  • Questions about API platforms
Please don't message about
  • SEO and link-building offers
  • Unpaid work or spec projects
Skills
OWASPRESTRedisOpenAPI
AdvisingOpen to advising
closes in 3 months

Office hours for new engineering managers: API platforms and OWASP

Topics
API platforms, Redis, OWASP
Format
Calls
Terms
Paid
Capacity
One advisory role at a time
Best for
First-time founders

18 years of API platforms. One call a month or async reviews.

Philadelphia, PA · remote OKredisowasprest
Open

Experience

  1. Director of Engineering
    Apr 2026 - Present
    Comcast · 6 mo · Full-time · Philadelphia, PA
    • Built the experimentation framework 24 product teams use to ship changes safely.
    • Brought on-call pages for public API down from 27 a week to 4.
  2. Senior Backend Engineer
    Nov 2023 - Feb 2026
    Reddit · 2 yr 3 mo · Full-time · Philadelphia, PA
    • Cut p99 latency on the public API services from 622ms to 180ms.
  3. Engineering Manager
    May 2021 - Nov 2023
    Atlassian · 2 yr 6 mo · Full-time · Philadelphia, PA
    • Wrote the Redis service that now handles 55 million requests a day.
    • Built the experimentation framework 30 product teams use to ship changes safely.
  4. Engineering Manager
    Dec 2018 - May 2021
    Tesla · 2 yr 5 mo · Full-time · Philadelphia, PA
    • Moved 63% of public API traffic off a legacy monolith without a customer-facing incident.
    • Brought on-call pages for public API down from 26 a week to 2.
  5. Staff Backend Engineer
    Jun 2015 - Dec 2018
    Stripe · 3 yr 6 mo · Full-time · Philadelphia, PA
    • Led the migration of 70 services to Redis.

References

No references yet.

Education

  1. University of Pennsylvania
    BS, Computer Science
    2004 - 2008

Details

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