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mariocesar

Re:Tidy – Open-Source Paper on Monday October 12, 2026 @03:36PM (#50061794)
"Tidy is a product canvas for designers, engineers and agents" as also an alternative to claude design?
Re:Claude Haiku 5.5 on Wednesday October 07, 2026 @02:18PM (#49996711)
I have a zsh functions that calls claude code with haiku to suggest commit messages, is faster and the instructions are two lines.

I also have an "ask" script that I use daily to ask simple stuff, it can access websearch and webfetch, it's more than enough to parse logs, ask for commands, quick research on the internet, small stuff. https://github.com/mariocesar/dotfiles/blob/main/common/.loc...

I use haiku for things that needs to be quick, have really clear instructions.

Ask HN: What do you run on a $5 VPS that's worth keeping online 24/7?

DHH's "AI shed" idea got me thinking about getting a small $5–10/month VPS.I'm a Linux guy and have on many points of my life have a personal server. So I like the idea of having something always on, but I’m not sure the maintenance is worth it when most things can just run on my laptop.That said, I tend to do things myself and only later realize I could have automated or delegated them, so I...

( Read More... | 679 comments | on HN )
Re:Claude Status – Elevated errors for multiple models on Tuesday September 22, 2026 @08:21AM (#49800066)
No point, I just shared something I did
Re:Claude Status – Elevated errors for multiple models on Monday September 21, 2026 @10:35PM (#49796190)
`claude --resume` will list your sessions, you can copy the title. Codex may just list and grep the sessions files in ~/.claude and filter the one with the name.

I also have the habit of naming my sessions with `/rename`

Re:Claude Status – Elevated errors for multiple models on Monday September 21, 2026 @09:33PM (#49795780)
I'm was closing a day of work and it stopped in the middle of a long plan, I started codex and tell it: "I was in the middle of work with Claude could you read the plan and the session "x" in ~/.claude and continue the work" it just completed everything :D
Re:Ask HN: What default model do you use and why? on Saturday September 12, 2026 @11:44AM (#49673525)
To ask for web search, simple commands and research, or passing logs to analyze it's more than enough

Here is the script https://github.com/mariocesar/dotfiles/blob/main/common/.loc...

Re:Ask HN: What default model do you use and why? on Saturday September 12, 2026 @11:18AM (#49673210)
I have an 'ask' alias in my shell that just uses Haiku. I use it daily for pretty much everything

For more long work, I now use Fable to create a PLAN.md. I tell it to make a plan that will be executed by other models, and most of the time it ends up choosing Opus or Sonnet.

I didn't start doing this recently. Before that, I would just use the top model for everything. Splitting the work across different models depending on the task has helped a lot. They run faster, and I usually get much better results

Great work, and thanks for sharing the transcript! Just skimming through the chats, I've already learned a lot. Would be so awesome to have this for any region/city, but that is a data problem to solve.

Congrats again!

Cool, if we could by hour I can replace my CBT tracker !
This was posted on HN a while ago and I started using it then. I've accumulated quite a bit of data and have used both export and import. That's turned out to be the most useful feature for me

I've used other trackers, ones focused on CBT. My only suggestion is to allow text notes in each entry, so I can track emotional states or recurring thoughts

Re:Ask HN: Alternatives to GitHub on Monday August 17, 2026 @10:24AM (#49331516)
I answered this in another thread, if you're already running a large GitHub organization, GitLab is the closest alternative in terms of features

A big plus is that it also has an open-source Community Edition that you can self-host

Re:Incident with Github.com on Monday August 17, 2026 @10:13AM (#49331334)
GitLab is probably the most reasonable alternative. I migrated and it took me some weeks to adapt to the new CI, but for my use case it's basically equivalent in features.

I started with the cloud version, then moved to self-hosted because it wasn't a big effort for our team. We also reduced our monthly invoice by about 50% after the move.

Re:Is it all just vapourware? on Sunday August 09, 2026 @05:22PM (#49236059)
The product is being launched before the value is clear.

We've seen similar waves with new technologies before: overexposing the pros, dismissing the cons, hyper-optimism, and people using a lot of jargon without saying much of substance. The difference this time is the scale of the impact and the volume around it.

Re:Ask HN: Who wants to be hired? (August 2026) on Monday August 03, 2026 @07:33PM (#49162715)
Location: Santa Cruz, Bolivia (UTC-4, EST)

Remote: Yes

Willing to relocate: Yes

Technologies: Python, Django, FastAPI, Flask, Node/NestJS, TypeScript, React/Svelte/Vue, Next.js, Postgres, Redis, Docker, Kubernetes, AWS (Lambda/ECS/RDS/S3), Terraform, Celery/RabbitMQ/Airflow, GraphQL, ETL, Zapier (Platform/CLI), OpenAI/Claude integrations

Résumé/CV: https://www.linkedin.com/in/mariocesar/ (happy to send PDF)

Email: mariocesarsenoranis @ gmail.com

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.

Links: https://github.com/mariocesar https://mariocesar.xyz/ https://www.linkedin.com/in/mariocesar/

Re:Ask HN: Who wants to be hired? (July 2026) on Wednesday July 01, 2026 @04:46PM (#48752885)
Location: Santa Cruz, Bolivia (UTC-4, EST)

Remote: Yes

Willing to relocate: Yes

Technologies: Python, Django, FastAPI, Flask, Node/NestJS, TypeScript, React/Svelte/Vue, Next.js, Postgres, Redis, Docker, Kubernetes, AWS (Lambda/ECS/RDS/S3), Terraform, Celery/RabbitMQ/Airflow, GraphQL, ETL, Zapier (Platform/CLI), OpenAI/Claude integrations

Résumé/CV: https://www.linkedin.com/in/mariocesar/ (happy to send PDF)

Email: mariocesarsenoranis @ gmail.com

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.

Links: https://github.com/mariocesar https://mariocesar.xyz/ https://www.linkedin.com/in/mariocesar/

Just start using it! It really makes sense the % progress.
Re:GitHub Is Sinking on Sunday May 10, 2026 @12:57PM (#48085601)
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
Re:Ask HN: Who wants to be hired? (May 2026) on Friday May 01, 2026 @01:22PM (#47977425)
Location: Santa Cruz, Bolivia (UTC-4)

Remote: Yes

Willing to relocate: Yes

Technologies: Python, Django, FastAPI, Postgres, Svelte/Vue/React, Docker, AWS, Terraform, Zapier (Platform/CLI), ETL

Résumé/CV: https://www.linkedin.com/in/mariocesar/ (happy to send PDF)

Email: mariocesar "at" humanzilla.com

Senior full-stack engineer (10+ yrs). Python/Django-first.

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.

Links: https://github.com/mariocesar https://mariocesar.xyz/

Re:Ask HN: Who wants to be hired? (April 2026) on Wednesday April 01, 2026 @12:20PM (#47602927)
Location: Santa Cruz, Bolivia (UTC-4)

Remote: Yes

Willing to relocate: Yes

Technologies: Python, Django, FastAPI, Postgres, Svelte/Vue/React, Docker, AWS, Terraform, Zapier (Platform/CLI), ETL

Résumé/CV: https://www.linkedin.com/in/mariocesar/ (happy to send PDF)

Email: mariocesar "at" humanzilla.com

Senior full-stack engineer (10+ yrs). Python/Django-first.

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.

Links: https://github.com/mariocesar https://mariocesar.xyz/

Re:Scotty: A beautiful SSH task runner on Tuesday March 31, 2026 @04:12PM (#47592808)
I made something similar years ago, a long one-liner.

  tar cpf - provision/ | ssh [email protected] "tar xpf - -C /tmp && cd /tmp/provision && bash /tmp/provision/bootstrap.sh && rm -rf /tmp/provision"
Heres is the full use: https://gist.github.com/mariocesar/8e674ec40dad6b94114d2a44d...

I named "Ansible for the Frugal"

Re:Scotty: A beautiful SSH task runner on Tuesday March 31, 2026 @03:53PM (#47592561)
Feels like Ansible does the same thing, just with nicer output
Re:I Overengineered a Spinning Top on Wednesday January 28, 2026 @12:08PM (#46798186)
There is a Japanese show that made a Scientist vs Engineers version to build the best Spinning Top: https://www.youtube.com/watch?v=-q-hcidtjiM

Awesome!

Re:Databases in 2025: A Year in Review on Monday January 05, 2026 @08:48AM (#46498689)
Same surprise here. However in practice, the community tends to talk about DuckDB more like a client-side tool than a traditional database
Re:Ask HN: Is snapd still controvertial on Ubuntu? on Monday December 15, 2025 @07:46AM (#46273777)
> I can’t say I’ve installed a huge number of snaps but when I have they worked

Thanks. Any apps you avoided installing as snaps?

Ask HN: Is snapd still controvertial on Ubuntu?

I've been on Debian and sometimes Arch for years and wanted to try Ubuntu Desktop again. What surprised me is how often Snap shows up as the "Recommended" install way in their docs and others software "Install in Ubuntu" is mostly with Snap.If you're using Ubuntu for Desktop today: how is Snap in practice? Any real pain points or is it basically fine now?It's worthy?

( Read More... | 7 comments | on HN )
Re:Ask HN: Who wants to be hired? (November 2025) on Monday November 03, 2025 @03:03PM (#45803727)
Location: Santa Cruz, Bolivia (UTC-4)

Remote: Yes

Willing to relocate: Yes

Technologies: Python, Django, FastAPI, Postgres, Svelte/Vue/React, Docker, AWS, Terraform, Zapier (Platform/CLI), ETL

Résumé/CV: https://www.linkedin.com/in/mariocesar/ ask me a PDF by mail.

Email: mariocesar "at" humanzilla.com

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.

Links: GitHub https://github.com/mariocesar · Site https://mariocesar.xyz/

Re:Ask HN: Freelancer? Seeking freelancer? (October 2025) on Wednesday October 01, 2025 @04:06PM (#45442726)
SEEKING WORK | Santa Cruz, Bolivia (UTC-4) | Remote: Yes

Technologies: Python, Django, FastAPI, Postgres, Svelte/Vue/React, Docker, AWS, Terraform, Zapier (Platform/CLI), ETL

Résumé/CV: https://www.linkedin.com/in/mariocesar/

Email: mariocesar [at] humanzilla.com

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.

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