jcmartinez.dev

HEAD → main

Juan Cruz Martinez

Software engineer, author, and speaker. 20 years of commits, from enterprise C# to developer content at Auth0. Now writing The Long Commit, a newsletter about engineering careers in the age of AI.

Read The Long CommitExperience

$ git log --graph --career

Twenty years, one long commit.

From Buenos Aires to Orlando to Germany: shipping products, leading teams, and writing about what it taught me.

  1. 8379d7e(HEAD → main)Nov 2025 — now

    Senior Manager, Developer Content

    Auth0

  2. 7eb4637Jul 2022 — Nov 2025

    Staff Developer Advocate

    Auth0 · Germany · Remote

    Built demos, apps and content at the intersection of identity, AI, and developer experience, and worked with product teams to shape Auth0's AI SDKs.

    • AI
    • RAG
    • Identity

  3. ad1a097(branch: logrocket)Dec 2020 — Jun 2022

    Technical Writer

    LogRocket

  4. 1beec92(branch: goto-lcs)Aug 2020 — now

    Founder

    goto LCS UG · Nuremberg, Germany

  5. b6b27baAug 2019 — Jun 2022

    Full Stack Engineer

    ZEISS · Munich, Germany

    Led frontend and backend development of healthcare products, focused on UX for mission-critical systems in regulated environments.

    • React
    • Node.js

  6. ce1dab3Nov 2017 — Aug 2019

    Technical Lead

    Siemens · Orlando, USA

    Led a cross-functional onshore and offshore team delivering software for the energy industry while modernizing the stack.

    • Ember.js
    • React
    • Python

  7. 15e7185Sep 2015 — Nov 2017

    Digital Engineer

    Siemens · Buenos Aires, Argentina

    Automated key financial processes in the energy business and built internal tools for its digital transformation.

    • Python
    • C#
    • JavaScript

  8. 5785b50Feb 2013 — Sep 2015

    Operational Excellence Specialist

    Siemens · Buenos Aires, Argentina

    Designed IT solutions that automated business processes, and built a big data proof of concept in a global young-talent program.

    • Python
    • C#
    • JavaScript

  9. 272e5c8(tag: first-commit)Aug 2006 — Feb 2013

    C# Senior Programmer

    emmsa consulting

    Built enterprise web applications on Microsoft technologies and led accounts-payable projects from conception to completion.

    • C#
    • Python
    • JavaScript
full history on linkedin ↗

$ git checkout the-long-commit

The Long Commit

Practical, no-fluff writing on engineering careers in the age of AI. Weekly notes from 20+ years in the field.

Read on Substack

what I write about

  • feat:AI's real impact on engineering work
  • fix:Lessons that took too long to learn
  • docs:The human side of software