Senior engineer · Automation consultant · Developer coach

I automate manual work for companies. And coach developers to ship.

AI is an accelerator, not a compass. You still need someone who knows where to point it.

I'm with a company → I'm a developer →

20 years building production software · 13 years at Sun Microsystems and Oracle · Pybites co‑founder · 150+ developers coached

Bob Belderbos

For companies

Senior technical help, without hiring a CTO.

Process automation

Turn a manual process into software that runs.

AI adoption

Get AI into real work, where it helps.

Fractional CTO

Technical leadership, part-time.

It starts with a call. Everything after that is scoped to you, at a fixed price.

Book a call → See consulting →

For developers

One path, first app to production.

  1. FoundationsYour first Python app
  2. Full-Stack PythonArchitecture fundamentals
  3. Django SaaSShip a SaaS app
  4. Agentic AI or RustSpecialize
  5. 1:1Your project, together
Find your starting point →

How I got here

Business first. Then 20 years of production software.

  1. 2006

    Finance

    A business economics degree, then financial analyst at CHEP, where I automated the team's reporting in Excel VBA.

  2. 2007–2020

    Sun Microsystems and Oracle

    13 years in critical production environments, around eight on support automation. One team initiative automated the resolution of around 40% of incoming x86 support calls.

  3. 2016

    Co-founded Pybites

    I designed and built its Python and Rust coding platforms, in production ever since.

  4. 2020

    1:1 coaching

    More than 150 developers coached, from career changers to senior engineers and SaaS founders.

  5. Today

    Both sides of the table

    I speak business and engineering. So I help companies automate and adopt AI, and help developers ship.

Read my full story → · Read developer stories →

From the blog

How I think about building systems

What production AI agents actually require

Chatting is easy. Executing real business logic with audit trails, approvals, and rollback is where most AI agents break. Here is what to build.

The control layer is the product, not the model

Gary Bernhardt called out the LLM fixation. The real work is the control layer above the model. Four patterns that make production AI reliable.

Build the Simplest Thing That Works

How constraints like 'no database' and 'two dependencies' led to a CLI CRM that fits in my head. A case for building small.

All articles →

Newsletter

Mastery over Hype

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Not sure which fits? Ask me.

Book a call. Bring the problem, not a spec.

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