Sofie Nieminen

S

VP of Engineering at Gather Learning · Web frontends · accessibility, web performance

Gather Learning
Copenhagen, Denmark · CET (UTC+1)
12+ years experience
Humboldt University of Berlin
English, Danish, Spanish
Messaging unavailable

Overview

Based in Copenhagen. I lead web frontends at Gather Learning. Cut the main bundle by 54% and got LCP under 2.4 seconds. Moved 79% of web traffic off a legacy monolith without a customer-facing incident. I read too many books about cities.

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  • Speaking or podcast invitations
  • Questions about web frontends
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Skills
GraphQLCSSReactaccessibilityNext.jsweb performanceTypeScript

Experience

  1. VP of Engineering
    Jan 2026 - Present
    Gather Learning · 9 mo · Full-time · Copenhagen, Denmark
    • Shipped a rewrite that took build times from 19 minutes to under 2.
    • Mentored 8 engineers through their first promotion.
  2. Director of Engineering
    May 2022 - Jan 2026
    Glovo · 3 yr 8 mo · Full-time · Copenhagen, Denmark
    • Brought on-call pages for web down from 14 a week to 1.
    • Mentored 14 engineers through their first promotion.
  3. Senior Frontend Engineer
    Feb 2019 - May 2022
    ING · 3 yr 3 mo · Full-time · Copenhagen, Denmark
    • Cut p99 latency on the web services from 458ms to 80ms.
    • Wrote the web performance service that now handles 85 million requests a day.
  4. Director of Engineering
    Nov 2017 - Feb 2019
    Philips · 1 yr 3 mo · Full-time · Copenhagen, Denmark
    • Brought on-call pages for web down from 34 a week to 4.
  5. Senior Frontend Engineer
    Jan 2015 - Nov 2017
    IKEA · 2 yr 10 mo · Full-time · Copenhagen, Denmark
    • Led the migration of 53 services to TypeScript.

Projects

Write-up: web frontends in practice
2026

A long-form guide to web frontends for people starting out.

Conference talk: lessons from web
2025

What went wrong and what worked while scaling web frontends.

References

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Education

  1. Humboldt University of Berlin
    BA, Computer Engineering
    2002 - 2005

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