Work

Projects that made a difference

A selection of recent work. More examples are available on request.

Featured project

Research · AI

Excludr

A platform for systematic reviews and meta-analyses, with an AI co-reviewer that screens full texts against your inclusion and exclusion criteria — and shows its work, so your team keeps the final say.

Highlights

  • AI assessment per criterion, with a confidence score and its reasoning
  • Dual screening: disagreements between reviewers surface automatically
  • PRISMA 2020 flow counts, Cohen’s kappa and AI-versus-human accuracy
  • Open-access full texts fetched from Unpaywall, PubMed Central and Europe PMC
  • Complete audit trail of every decision, override and resolution
  • Import from RIS or PubMed, export decisions as CSV or RIS
  • AI screening
  • Systematic reviews
  • Web app
  • SaaS
Visit the app
Featured project

Health · Open source

Period Tracker

A calm, honest and private period tracker. Instead of one made-up date, it forecasts the days your period will most likely start — and tells you how sure it is.

Highlights

  • Forecasts with a confidence level, learned from your own cycles
  • Plan screen: the real chance your period falls on a holiday, race or wedding
  • Predicted days in Google, Apple or Outlook Calendar — with a discreet label
  • Private partner heads-up link and a Home Assistant sensor
  • Printable summary to bring to a doctor’s appointment
  • Free, no ads, no trackers — and self-hostable
  • Probabilistic forecasting
  • Installable web app
  • Open source
  • Privacy-first
Visit the app View the code
Featured project

Developer tools · Open source

fastapi-fsp

A Python package that gives FastAPI + SQLModel APIs filtering, sorting and pagination out of the box. Add one dependency and every list endpoint speaks the same, predictable query language.

Highlights

  • Filter on any field with rich operators: ranges, lists, text search and null checks
  • Search across multiple columns with a single term
  • Sorting and pagination with ready-made next/previous links
  • Works with computed fields, filtered and sorted in the database
  • Published on PyPI and maintained by FromEJ
  • Python
  • FastAPI
  • SQLModel
  • Open source
Read the docs View the code View on PyPI

Construction

Uniekbouw app

A custom app built for Uniekbouw to support their day-to-day work.

  • App development
  • Client project

Your project could be next

Tell me what you are working on. You will get a reply within one working day.

Get in touch ej@fromejdevelopment.nl