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Custom software, AI and cloud Koen Calliauw, Belgium

I turn complex workflows into reliable software

From first sketch to production. I help teams combine product design and custom development with AI integration and cloud infrastructure, and I stay with the work until it runs.

Start a project See the work

From problem to running system

Projects go wrong where one phase hands over to the next. I can do every phase myself, so nothing gets lost in between.

  1. Define the problem

    I map the workflow with the people who do the work, then write down what the software must do and what it can leave out.

    What you get
    • A map of the current workflow
    • A written problem statement
    • A scoped first release

  2. Design

    Screens, data model and structure, designed together. I decide where AI earns its place; you click a prototype before the build.

    What you get
    • A clickable prototype
    • An architecture and data model
    • A plan in small releases

  3. Build and test

    I build in small releases that you try as they land, with tests written alongside the code. TypeScript and React, Go or Rust, or PHP and Vue if you already run them.

    What you get
    • Working software, release by release
    • Automated tests
    • Code you own, with its history

  4. Run in production

    I set up the hosting as code and add monitoring before launch, then stay on to keep it running, on AWS, GCP or your own Linux servers.

    What you get
    • Infrastructure as code
    • A deployment pipeline
    • Monitoring, alerts and runbooks

Three areas I know in depth

  • AI and agent systems

    AI that does a real job in your workflow: review, drafting, sorting. With clear limits, logging and a person in the loop.

    Seen in AI review system for code changes

  • Cloud infrastructure and reliability

    Cloud infrastructure that stays up. AWS and GCP, Terraform and Docker, with monitoring that tells you before your users do.

    Seen in Game server admin and dashboards

  • UX and product architecture

    Software shaped around how people work. I design screens and system structure as one piece, and fix the flow underneath.

    Seen in Platforms for the equine sector

Custom web apps, internal tools and operational dashboards sit underneath all three, and are the core of most projects.

Selected work

Three kinds of software I build, and the stages each one covered.

Browse case studies
  • A rider on a grey horse clearing a show-jumping fence in an outdoor arena

    Platforms for the equine sector

    The problem
    Horses, bloodlines and results, tracked by breeders, riders and fans. The data has to be correct and fast for many users at once.
    What I built
    Web platforms for the sector, including work for Hippomundo. I designed the data model, search and daily screens around how breeders and riders work, then built them and the infrastructure underneath.

    Stages and stack to be confirmed

    1. Define
    2. Design
    3. Build
    4. Run

    PHP, Vue, TypeScript, AWS

  • Screenshot to come Review comments on a code change

    An AI review system for code changes

    The problem
    Code review takes senior time, and routine checks are the first thing to slip when a team is busy.
    What I built
    A system that checks each change against the team's own rules and comments where developers work. People still decide what gets merged.
    Read the case study

    Stages and stack to be confirmed

    1. Define
    2. Design
    3. Build
    4. Run

    TypeScript, Go, Docker

  • Screenshot to come Server health dashboard

    Game server admin and dashboards

    The problem
    Running servers by hand means shell sessions, guesswork and hearing about problems late.
    What I built
    An admin tool to deploy, update and restart game servers, and dashboards that show health and usage at a glance.

    Stages and stack to be confirmed

    1. Define
    2. Design
    3. Build
    4. Run

    Go, React, Docker, Linux

Start a project

Why one person

No handoffs
You talk to me directly. The person who hears your problem designs the screens, writes the code and gets the alert at night.
Scope that fits
I plan releases one engineer can build and run well. If your project needs a larger team, I tell you at the start.

Worked with

  • Hippomundo
  • Dexis
  • Klium
  • Nanogrid
  • Pharmazone
  • Granoladies
  • Oneliner
  • De Keyzer-Ossaer

Have a workflow that needs fixing?

Send me a few lines about the problem, who runs into it and where things stand today. I read every message myself.

Send me a message

koen@layer7.be