Hi, I'm Tony Aldon

I'm a Python developer based in Spain, with a background in mathematics and music. I build API integrations, automation scripts, and developer tools.
My work so far has been through independent projects, open-source contributions, and technical education.
I'm looking to join an engineering team working on Python backend services, AI integrations, or developer tooling.
What I'm building¶
I'm currently building a coding agent for Emacs. My recent Python work includes CLIs and automation using the OpenAI API, alongside independent projects deployed on AWS.
I write about the implementation details: testing API integrations, handling errors, debugging unexpected behavior, and improving tools.
A few places to start:
- Mocking the OpenAI API with RESPX in Python
- Debugging 128K whitespace tokens from the Responses API
- Building a Python CLI to enrich phrasebooks with AI translations, audio, and images
Open source and teaching¶
Previously, I contributed Python tests and tooling to Bitcoin Core Lightning projects, including a JSON-RPC client and a plugin library.
I've also published around 170 coding tutorials covering Python, Emacs Lisp, and C, with a YouTube audience of more than 1,200 subscribers. I've presented projects at EmacsConf and PyConES, and published the course Build a ChatGPT Client in Emacs Lisp.
You can explore my open-source work, videos, and conference talks.
Working with AI¶
I write Working with AI, a newsletter about learning, thinking, and working with AI tools. It helps me reflect on using these tools, not just implementing them.
Get in touch¶
For Python development opportunities or a conversation about my work: Email · LinkedIn · Github