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Declan Carter

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Senior Engineering Manager at Meridian Energy · GraphQL, TypeScript

Works at
Meridian Energy
Location
Boston, MA · ET (UTC-5)
Experience
9+ years experience
Education
MIT
Languages
English

Overview

I lead web frontends at Meridian Energy in Boston. Cut the main bundle by 46% and got LCP under 2.5 seconds. Before that: Verizon and Twilio. I mentor students through university programmes.

Good reasons to reach out
  • Thoughtful intros to people in my field
  • Working sessions on React
  • Speaking or podcast invitations
Please don't message about
  • Requests to fix your code for free
  • Crypto token projects
  • Agency or outsourcing pitches

Replies between meetings, usually same day

Skills
web performanceNext.jsReactGraphQLCSSTypeScript

Experience

  1. Senior Engineering Manager
    Nov 2025 - Present
    Meridian Energy · 1 yr · Full-time · Boston, MA
    • Cut p99 latency on the web services from 666ms to 91ms.
    • Led the migration of 49 services to GraphQL.
    • Wrote the Next.js service that now handles 38 million requests a day.
  2. Staff Frontend Engineer
    Mar 2024 - Nov 2025
    Verizon · 1 yr 8 mo · Full-time · Boston, MA
    • Grew the web team from 4 to 26 engineers.
  3. Senior Frontend Engineer
    Jan 2022 - Mar 2024
    Twilio · 2 yr 2 mo · Full-time · Boston, MA
    • Shipped 25 launches on the web team without a rollback.
    • Moved 69% of web traffic off a legacy monolith without a customer-facing incident.
  4. Frontend Engineer
    Sep 2018 - Jan 2022
    McKinsey & Company · 3 yr 4 mo · Full-time · Boston, MA
    • Led the move of 110 screens to a shared React component library.
  5. Frontend Engineer
    Oct 2017 - Sep 2018
    Workday · 11 mo · Contract · Boston, MA
    • Cut p99 latency on the web services from 478ms to 87ms.
    • Wrote the Next.js service that now handles 22 million requests a day.

References

No references yet.

Education

  1. MIT
    SB, Computer Science
    2012 - 2016

Details

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