Andreas Alexander

What I can build for you

Six kinds of work. If yours is not on the list, describe the problem anyway and I will tell you whether I can help.

  • Mobile apps

    An app your staff or customers use on a phone or a tablet. YataPOS runs a shop counter: product catalog, barcode scanning, a cart, and cash, card, and e-wallet payments. At Blibli I worked on the iOS app for a year, in Swift.

    Ask about mobile apps
    YataPOS cashier screen on a counter tablet, beside a barcode scanner and a receipt printer
  • Websites and web apps

    A website or a web app, front to back: the screens people use, the services and APIs behind them, and the database. Quan C is a secure coding platform built in React and TypeScript with Express and FastAPI. Mai Boutique is an online clothes store with stock management, built on Laravel.

    Ask about websites and web apps
    Quan C home page: a vulnerable code sample beside a lock diagram showing which attack payloads got in
  • Security training

    A fake phishing campaign for your company, run with your approval, to build cyber awareness. I build a realistic page, like this sample sign-up form, and send it to your staff the way an attacker would. You get a report of who clicked and who typed in their details, so you know where to aim the training. In 2024 I built the frontend of a phishing simulation platform for a banking client.

    Ask about security training
    Sample phishing simulation page: a sign-up form for a made-up company called NovaWorks
    A sample simulation page. NovaWorks is a made-up company.
  • DevOps engineering

    Getting your software from a developer's laptop to production, the same way every time. I set up CI/CD pipelines that build, check, and deploy each change, size and install the servers, and run them on the cloud or a VPS with SSL. For GIS clients I automated deployment to their production servers. For security clients I wired OpenText Fortify SAST and DAST scans into their pipelines, so every build is checked before release.

    Ask about DevOps engineering
    Sample pipeline run: build, test, security scan, and deploy all passed, with the deploy log and release details below
    A sample pipeline run. The project and numbers are made up.
  • Data tools

    You have a question and the data is scattered, messy, or on someone else's website. I research the sources, scrape and clean the data, analyse it, and hand you the answer in a form you can use.

    Ask about data tools
    Sample weekly price report: a line chart comparing three stores over twelve weeks, a list of findings, and a table of the biggest price gaps
    A sample report. The stores, products, and prices are made up.

Tell me what is slowing you down.

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