Senior full-stack engineer & tech lead, 10+ yrs, Python/Django-first. I ship MVPs that reach production and stabilize/modernize legacy systems without breaking what works. Comfortable across backend, frontend, and infra.
Strong on SaaS, integrations and data flows: Zapier apps (Platform/CLI), ERPs, billing, CRMs, webhooks, ETL — plus LLM integrations (OpenAI/Claude). Years spent making systems talk to each other reliably.
Ex-Zapier (integrations), ex-Tesorio. Experience across SaaS, fintech, and e-commerce.
Agree with Gitlab as an enterprise alternative. Beautifully boring and safe to have complex teams and permissions. Also has a good enough Terraform support, and a nice workflow to host docker images
I build MVPs that make it to production, and I stabilize/modernize legacy systems without breaking what works. Comfortable across backend, frontend, and infra.
Strong on integrations and data flows: Zapier apps (Platform/CLI), ERPs, billing, CRMs, webhooks, ETL. I've spent a lot of time making systems talk to each other reliably.
Years of experience in SaaS companies.
Ex-integrations @ Zapier / Tesorio. Former CTO/founder.
I build MVPs that make it to production, and I stabilize/modernize legacy systems without breaking what works. Comfortable across backend, frontend, and infra.
Strong on integrations and data flows: Zapier apps (Platform/CLI), ERPs, billing, CRMs, webhooks, ETL. I've spent a lot of time making systems talk to each other reliably.
Years of experience in SaaS companies.
Ex-integrations @ Zapier / Tesorio. Former CTO/founder.
Senior full-stack engineer (10+ yrs). Python + Django are my main tools. Comfortable across backend, frontend, and infra. I build MVPs that turn into products. I also modernize legacy code and keep it running so many times. Deep on integrations & data flows (Zapier, ERPs, billing, CRM). Ex-integrations @ Zapier/Tesorio.
Full-stack, Django-first. I ship MVPs and steady/modernize legacy systems.
Integrations & data flows: Zapier apps/CLI, ERPs, billing, CRMs, webhooks/ETL.
Collaborative by default, like writing docs. I can learn your domain fast.
Ex-integrations @ Zapier/Tesorio. Founder background, hands-on and available for short projects or ongoing work.
Senior full-stack engineer (10+ yrs). Python + Django are my main tools. Comfortable across backend, frontend, and infra. I build MVPs that turn into products. I also modernize legacy code and keep it running so many times. Deep on integrations & data flows (Zapier, ERPs, billing, CRM). Ex-integrations @ Zapier/Tesorio. Former CTO/Founder now advising—hands-on and available.
Nice! I build something similar but without the checks and selection. my dotfiles include an idempotent install script and a Brewfile with all my packages. The selection and checks features you've added, that's a great touch!
Something I'm not able to do nicely is to sync browser profiles, I end up doing all the setup and login step by step, it takes me an hour or so
I've been in SaaS for about 17 years, and a pattern I've seen is that for companies customers actually love, customization shows up as a milestone. It helps them find their own way of doing things, but eventually they settle into that way.
When it resonates with customers, it feels great.
Customizable SaaS is really just a side effect of the deeper need for control, because with control you can execute better. And when that lines up with capital, market fit, and a clear purpose, it creates more than efficiency, it creates meaning.
The companies that never settle, always chasing new patterns, usually end up with customers who don't enjoy them and employees who don't enjoy the software either.
Personal Website: https://mariocesar.xyz/
LinkedIn: https://www.linkedin.com/in/mariocesar/
Contact me at LinkedIn or mariocesar (at) humanzilla.com