Valentina Ferreyra

S

Staff Frontend Engineer at Mercado Libre · Web frontends · Next.js, React

Mercado Libre
Bogotá, Colombia · COT (UTC-5)
9+ years experience
Universidad de los Andes
English, Spanish
Messaging unavailable

Overview

Currently at Mercado Libre, where I work on web frontends. Shipped a rewrite that took build times from 16 minutes to under 4. Before that: Amazon and EY. Most at home with React and Next.js.

Good reasons to reach out
  • Questions about web frontends
  • Working sessions on accessibility
  • Speaking or podcast invitations
Please don't message about
  • Recruiters for roles outside my stack
  • Unpaid work or spec projects

Checks messages twice a week

Skills
TypeScriptReactNext.jsaccessibility

Experience

  1. Staff Frontend Engineer
    May 2024 - Present
    Mercado Libre · 2 yr 5 mo · Full-time · Bogotá, Colombia
    • Shipped a rewrite that took build times from 32 minutes to under 4.
    • Cut p99 latency on the web services from 740ms to 117ms.
    • Led the move of 104 screens to a shared React component library.
  2. Frontend Engineer
    Aug 2020 - May 2024
    Amazon · 3 yr 9 mo · Full-time · Bogotá, Colombia
    • Cut the main bundle by 52% and got LCP under 2.6 seconds.
    • Shipped a rewrite that took build times from 21 minutes to under 2.
  3. Frontend Engineer
    Oct 2017 - Aug 2020
    EY · 2 yr 10 mo · Full-time · Bogotá, Colombia
    • Led the move of 83 screens to a shared React component library.

References

No references yet.

Education

  1. Universidad de los Andes
    Ingeniería, Computer Science
    2013 - 2017

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