PHP · Laravel · MySQL · JavaScript
Senior full-stack developer
I've been building web apps for 15 years, mostly on the backend with PHP and Laravel. Since 2021 I'm working on ChiroCat, a practice management software used by chiropractic clinics in the US.
romeo.onisim [at] gmail.com · romeoonisim.com · linkedin.com/in/romeoonisim · github.com/romeoonisim
Now
Chiropractic clinics in the US use ChiroCat for charting, scheduling, texting with patients and billing. Insurance claims and ERAs are handled inside the app too.
I work on the whole Laravel app, backend and front-end. A big part of my time goes into billing: claims, insurance payments, processing ERAs. Also integrations with other services, queues, MySQL and MSSQL, Vue and AWS.
Visit chirocat.comA news app for developers. You pick the technologies you work with and it shows you news only for those, with a daily brief and a short summary on top of each article. I built the PHP backend and the Android app.
Visit codenews.app
An Android app for answering the gate intercom from your phone. It talks to a Raspberry Pi at home, which talks to a Dahua intercom that has no public API. The recordings stay at home.
Visit ajar.codebldr.com
Code News and ajar are made under CodeBldr, my small company from Sibiu, started in 2016.
Experience
2021 - now
Practice management software for chiropractic clinics in the US. Laravel, queues, MySQL and MSSQL, Vue, AWS.
2019 - now
Built the REST API for the app, the admin panel and the landing page. In 2026 we rebuilt it as a native Android app.
2020 - 2021
Backend on a German online shop built on Spryker. I also got the Spryker certification while working there.
2016 - 2020
Classifieds website for Romania. I built the API that real estate agencies used to import their ads from their own CMS and the promotion packages, and helped split real estate, auto and jobs into separate projects. Also a lot of query optimization because of the traffic.
2015 - 2016
Hotel booking website. I worked on the admin panel, the website and the API, plus the integrations with hotel suppliers to get the best offer for each room.
2014 - 2016
Software download website with over 10 million visitors per month. I worked on the panel where developers add their apps, the admin panel for editors and the website.
2012 - 2014
Outsourcing company. Backend and front-end on client projects, like Computer Planet, Tasktail, Matchful and Ostresor.
2011 - 2012
My first job, while I was still a student. Here I made my first website from start to finish by myself.
Projects
Most of these websites are not online anymore, only the screenshots are left.
Mostly backend, and front-end when we launched new features. Also the API for real estate agencies.
Not online anymore
The REST API used by the app, the admin panel and the landing page. This is the first version, before the 2026 rebuild.
Admin panel, website and API. I integrated several hotel suppliers to get the best price for each room.
Not online anymore
The panel where developers publish their software, the admin panel for editors and the website.
Not online anymore
It had a PC configurator where you pick each component. I fixed bugs, added features and maintained it, backend and front-end.
Not online anymore
Backend for a time tracking app. It was used first inside the company, the plan was to sell it to others later but it didn't get there.
Not online anymore
It matched candidates with jobs using a score based on skills, experience and education. I integrated the API that calculated the score. It never launched.
Not online anymore
Bug fixes, new features and maintenance, backend and front-end.
Not online anymore
A news feed script similar to Hacker News, getting news from Reddit and other sources. Built by myself with CodeIgniter, to sell it on CodeCanyon.
Not online anymore
A website for motivational videos, images and articles, moderated by editors. Built with Yii. I closed it because I didn't have time to moderate it anymore.
Not online anymore
A job board for premium remote jobs. I built it with Laravel in order to learn Laravel.
Not online anymore
Stack
Contact
Write me what you need and where the project is at the moment.
romeo.onisim [at] gmail.com