Jop de Boer

• Full-stack development

  PHP, JavaScript, TypeScript, React, Drupal, WordPress

  From database to browser, in one pair of hands: custom Drupal modules, React front ends in TypeScript, WordPress themes and plugins, and apps of my own, among others in Rust.

• Integrations

  APIs, Power Automate, SharePoint

  Reliable integrations with external APIs, and flows that bring data into SharePoint. When something breaks, I find out why and build a safety net.

• Building a complete CMS

  PHP, TypeScript, SQLite

  For a medical pedicure practice I built a full CMS, with two-step sign-in, version history, scheduled publishing and backups, secure and accessible (WCAG 2.2 AA).

• AI as a tool

  AI, local language models

  I use AI to learn and build faster, and I review every change myself. My own app Écrin runs language models locally and privately.

• Always learning

  Curious, up to date

  I started programming out of curiosity and still keep learning. I follow the tech world and try new tools right away in a project of my own.

• Test automation

  Cypress, Playwright

  I write the automated tests that check my own code myself: a Cypress framework I set up covered about 90% of a website.

• Repairing a broken API integration

  After a Drupal update a YouTube integration stopped working. I found out why, repaired it and built a safety net for when the service goes down.

  • Outdated endpoints, headers and authentication updated
  • A fallback that removes the frame when the service is down
  • API keys handled more safely
• Écrin, my own app

  A Windows app that runs language models locally and privately, offline and without an account, written entirely in Rust. Commands the model runs go in a sandbox without a network.

  • My own engine (SAM) that drives the interface and the local model
  • Encrypted storage and a sandbox for every command
  • More than 400 automated tests
• A complete CMS

  For a medical pedicure practice I am building the new website (expected in December) with a CMS of my own: announcements with an exact start and stop time, a maintenance mode, version history and backups with restore.

  • PHP 8.3, Twig and SQLite, without a framework
  • Two-step sign-in and a strict Content Security Policy
  • Accessible to WCAG 2.2 AA
• Employee sync

  A Power Automate flow that syncs more than 15,000 employees from an external data-warehouse API into SharePoint.

  • 15,000+ employees
  • Cursor-based pagination
  • Null-safe JSON schema validation and error handling

More in my portfolio