The tools keep changing.
The fundamentals don't.

Intensive coaching in Python, Rust, and AI. I help developers build the skills that have always mattered — architecture, code review, and shipping real products under pressure.

Bob Belderbos

Producing code is easier than ever.
What matters is taste, experience, and validation.

Better tools, better frameworks, AI assistants — producing code has never been easier. But without taste, experience, and validation, most developers still get stuck between learning and shipping. Sound familiar?

Stuck in the learning phase

You know you're capable, but things still feel uncertain. New tools, unfamiliar architecture, code you're not sure is good enough. Imposter syndrome kicks in: “maybe I'm out of my depth.” Without someone experienced to normalize the struggle, that doubt compounds.

No feedback loop

You're coding in your own silo. AI can review syntax, but it doesn't know your level, your project history, or the architectural mistake you'll regret later on. You need someone who sees the bigger picture ("context window") and pushes you in the right direction.

No roadmap

You're learning randomly — a tutorial here, a blog post there. You're not sure if AI-generated code is maintainable. Which tools matter? How do experienced developers actually work? Without a real-world project it's difficult to develop one clear reference of what good engineering looks like.

A coach in your corner, a feedback loop, and a roadmap.

A sparring partner

A mentor who normalizes the struggle and pushes you through it. Talk through problems, test ideas, get unstuck. Everyone goes through the hard phase — you just don't have to do it alone.

Deep code reviewing

Detailed and honest feedback on real code via GitHub. For me code reviewing has been a before and after. Reviews reveal your blind spots (which might include Git) and make you a better engineer. From weekly to fast-turnaround — depends on the program.

A clear framework

Modern tooling, efficient workflows (IDE/Vim, shell, Git), clean project structure, testing, deployment. You'll learn a way of working that gives you a starting point for any future dev project. Not rigid instructions, but a sense of direction that makes you hyper focused.

Python. Rust. AI.

Big ideas, one coaching philosophy. Languages and tools are vehicles; some come and go, some stay. My coaching teaches you the timeless skills of designing, building, testing, and shipping systems that solve real problems.

Python

6 weeks · cohort

Build a professional-grade Python app with CLI, API, and web frontend. Clean architecture and TDD — a blueprint you'll reuse for every project after.

Rust

6 weeks · cohort

Build a JSON parser from scratch. Enums, ownership, FFI, Python bindings. Led by Jim Hodapp (20+ years experience).

AI

6 weeks · cohort

Build an AI-powered agent app with function calling, Telegram bot, and web dashboard. Led by Juanjo Expósito (PhD, Python & AI).

Looking for intensive 1:1? Book a call to discuss custom coaching — fast-turnaround PR reviews, 2 calls/week, 1–2 production apps.

All offerings →

What you walk away with

  • Shipped, portfolio-ready projects on your GitHub
  • Production-grade detailed code reviews
  • Confidence to architect and build apps from scratch
  • A professional developer workflow — IDE/Vim, shell, Git, AI tools
  • The iterative "ship before perfect" and JIT ("just in time") learning mindset
  • Direct support from me during the entire program

This is not for you if…

  • You want to watch videos and follow along — this is hands-on, you write real code
  • You're looking for someone to write your code for you
  • You can't commit 5–10 hours per week to building
  • You want a certificate, not a shipped project

What developers say

100+ developers coached since 2020 | 1,000+ pull requests reviewed.

About me

Bob Belderbos

Bob Belderbos

I spent over a decade at Sun/Oracle building developer tools and automation — first in Perl, then Python. No CS degree; I taught myself scripting on the job and worked my way up. That's exactly how I coach: less theory, more shipping.

Co-founder of Pybites, one of the most well-known Python communities. Hundreds of developers coached, two coding platforms built: pybitesplatform.com (400+ exercises) and rustplatform.com.

Sun/Oracle · 11 years Hundreds of developers coached 1,000+ PRs reviewed Co-founder Pybites 400+ exercises built Python, Rust, AI Django SaaS products built Git, Unix & Vim SIG certified · clean code Self-taught → professional Coaching in English, Dutch & Spanish Lifelong learner JIT Learning Kaizen Fitness

What happened to Pybites?

Julian and I each branched off from Pybites to focus on what we do best: I went deep on developer coaching, Julian on mindset coaching + tech support. This site is where my coaching lives now; same philosophy, full focus, and expanding into Rust and AI. Pybites continues as a blog, community, and coding platforms.

Ready to start shipping?

Book a free 20-minute intake call. I'll give you real feedback on where you are — whether you sign up or not.

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