About
Hello, I am Bob Belderbos. I am a software developer and coach.
I've been coding since 2006, first automating bookkeeping processes with VBA macros, then building web apps with PHP and support tools with shell scripting, Perl, and later Python.
I've used and loved Python since 2012, learning the ins and outs of the language, writing maintainable code in it. I have a deep passion for clean code, even taking SIG's building maintainable software certificate.
I built software for 10+ years at Sun/Oracle. End 2016 I co-founded Pybites, building two coding platforms hosting over 500 exercises and contributing to one of the most well-known Python communities.
Since 2020 I've coached 150+ engineers, helping them ship major apps and products, and growing their confidence in their skills. I really enjoy working with people, teaching from 20 years of software experience, and seeing things click after they've been stuck. Given my custom approach, I can meet you exactly where you are. With tutorials and bootcamps, that is a rare strength these days.
AI is changing everything and I stay current with how to use it well. What I've come to learn is that these tools can make you incredibly productive as a software engineer, but you need knowledge, experience and taste to not create a mess.
So I made this part of my training and keep evolving it. I integrate AI tools as part of my coaching, no hype, realistic and responsible usage, keeping your coding skills fresh. I also co-run an Agentic AI program with AI expert Juanjo Expósito.
And finally, there is Rust. I discovered it in 2024, and it has fascinated me since then. Not coming from a compiled language, its strictness and great language design helped me become a better developer. I blogged about my initial learnings and built a dedicated Pybites platform that's making the transition more ergonomic for Python people. I also co-run a Scripter to Rust program with Rust expert Jim Hodapp.
If you want to follow my work: I maintain an active blog, I post daily on LinkedIn, and if you have questions, you can also just email me.
Let's grow together in these exciting times.
What developers say
"Three months ago I was literally writing 'Hello World'. I went from basic scripts to launching a full-scale SaaS payroll application in three months. I just landed my first real business client." Ryan A., built thepayroll.app
"I grew more in a few weeks than I would have in 2+ years by myself. After years of dreaming of personal projects, I finally built an API, a Django app, and an AI-powered CLI tool." Kishan P., Data Engineer
"Six years later, I can see that doing the coaching was a great decision. I learned to write clean, well-tested, production-ready code and to think critically about my work." Piotr R., Senior AI Engineer at Lingaro
"I'd maxed out every book and online course and hit a wall I couldn't break through on my own. I expected to build one app. I shipped three." Joshua E., Product manager to senior software engineer
Get in touch
Ready to upskill as a developer? I offer a free 30-minute call to discuss your goals and how I can help you achieve them. No strings attached, just a conversation to see if we're a good fit.