Lasse Jacobsen

Lasse
Lasse with a surfboard

AI-pilled Fullstack Developer

10+ years of high-autonomy experience

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Hobby Project

AI-first Anki alternative for language learners. Hobby project launched in early-mid 2026; currently 500 users with 100000 cumulative card reviews. Functions fully offline and is architected to ship to all major platforms (web, pwa, android and iOS) from a single codebase.

2026 · 744 contributions

GitHub contributions

The Devcon Southeast Asia team

2020 – 2026

Ethereum Foundation - Devcon Team

Fullstack Developer

Developed and maintained the Devcon/nect web properties for almost 6 years. Work includes building the Devcon monorepo, multiple event/attendee-apps, ticketing infrastructure, crypto payments, AI integrations, hiring, authentication, venue maps, event scheduling, AV, marketing initiatives, automating internal systems, work in the broader organization (blog.ethereum.org, ethereum.foundation), and more...

2025 · 1,153 contributions*

2024 · 762 contributions*

2023 · 353 contributions*

2022 · 444 contributions*

2021 · 371 contributions*

2020 · 72 contributions*

GitHub contributions

*not exhaustive; some work unrecorded

svift.net website

2017 – 2020

svift.net

Tech lead

Responsible for building and leading the development of a CMS for collaboratively building websites via drag and drop. A modest success with ~200 clients paying ~100 dollars a year. It is still happily running with no developer input 6 years after I left, a testimony to the robustness of the infrastructure.

2019 · 344 contributions

2018 · 674 contributions

2017 · 567 contributions

GitHub contributions

Conference Manager website

2016 – 2017

Conference Manager

Web Developer

Worked full-time in parallel to my studies at Conference Manager. Most notably helped ship a react-native app for live voting at events.

2016

GitHub not used for versioning

GitHub contributions

AP Degree Computer Science

Copenhagen Business Academy

Dreamhack win

Trademark Esports

Esports Player

#1 on the ranked ladder for multiple years in a highly competitive game with over a million active players at the time. Played in and won prize tournaments across the world.

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Skills

AI pilled and autonomous

AI is an integral part of my work. I use heuristics (separation of concerns, bounded complexity, etc.) and intuition to ensure my code scales, feels human, and stays manageable, despite being AI generated. My ability to do this stems from over a decade of hands-on manual coding and product development in the pre-AI era, in high autonomy, high pace environments. I consider myself extremely industrious and trustworthy - I do things fast and well, with no handholding - I haven't worked any other way since 2016.

  • AI development
  • AI integration
  • TypeScript
  • React
  • Node
  • Nextjs
  • App development
  • Database design
  • DevOps
  • SQL
  • NoSQL
  • PWA
  • Cloud infrastructure
  • Automation
  • SEO
  • UI/UX taste
  • Authentication
  • Payments
  • Web3
  • Product Management
  • And much more...

Interests

  • Tennis
  • Ethereum
  • Nature
  • Travel
  • Longevity
  • Meditation
  • Video games
  • Chess
  • One Piece

Languages

  • EnglishFluent
  • DanishNative
  • JapaneseBeginner