Sorin is available for hire
Hire SorinSorin Trimbitas
Verified Expert in Engineering
PHP and Laravel Developer
Pitești, Argeș, Romania
Toptal member since January 24, 2020
Bio
Sorin is a software developer who enjoys challenges, from automation to security challenges. Highly motivated by exciting projects, Sorin does his best to come up with solutions that work. Coming with a DIY/breaker mindset helps him spot edge cases.
Portfolio
ACI Risk Measure Technologies ApS
Reporting, Automation, Full-stack Development, Architecture, Laravel, PHP...
The Growth Engine
Artificial Intelligence (AI), Full-stack Development, Scraping...
Raen Ventures Inc.
PHP, Laravel, SQL, APIs, API Integration, Trading, Back-end Development, MySQL...
Experience
- MySQL - 15 years
- PHP - 15 years
- Laravel - 7 years
- Arduino - 6 years
- Code Review - 6 years
- Web App Security - 3 years
- Security - 2 years
- Server Security - 2 years
Preferred Environment
PHP, Git, PhpStorm, Linux, Bootstrap, OWASP, Laravel
The most amazing...
...thing I've created was a whole lab to teach people how to code securely.
Work Experience
Full-stack Developer
2025 - PRESENT
ACI Risk Measure Technologies ApS
- Built an extensible template engine to generate reports for customers.
- Wrote a PDF generator and optimized the resulting PDFs based on templates.
- Designed the whole architecture to be easily updated and extended with new templates.
Technologies: Reporting, Automation, Full-stack Development, Architecture, Laravel, PHP, MySQL, Bootstrap, PDF.js, PDFtk, PDF, DataTables, Laravel Backpack
Full-stack Developer
2025 - 2025
The Growth Engine
- Architected and developed an automation to speed up the customer's workflow.
- Wrote an automated auth system and data retrieval for a 3rd party.
- Designed a process to filter raw 2+ GB files so we can work with OpenAI on them.
Technologies: Artificial Intelligence (AI), Full-stack Development, Scraping, Document Parsing, Customer Relationship Management (CRM), API Integration, OpenAI API, OpenAI GPT-4 API, Web Scraping, Data Scraping, Architecture, OpenAI o1, OpenAI, Automation, ChatGPT, Large Language Models (LLMs)
Full-stack Developer
2024 - 2025
Raen Ventures Inc.
- Developed an API to sustain the front end for future expansions and released it to the public.
- Architected and implemented the back-end systems to accommodate a large number of traders.
- Built and optimized pipelines to CQG APIs so everything works in async.
Technologies: PHP, Laravel, SQL, APIs, API Integration, Trading, Back-end Development, MySQL, Front-end Development, CQG, Futures, REST APIs, Protobuf, PHP 8, Postman, Authorize.net, TailoredPay API, Minimum Viable Product (MVP), TT REST API, CQG WebAPI, CQG CMS API, Customer.io, Twilio, Automation, Large Language Models (LLMs), SaaS, OpenAI, QR Codes
Full-stack Developer (via Toptal)
2024 - 2024
Amalfi Internet Ventures PTE LTD
- Developed an MVP that moves the user through a wizard to gather basic business information, creates a business plan, and presents it to the user in an editable context for tweaking before generating a fully-fledged PDF report.
- Set up the necessary infrastructure to run the software.
- Optimized the system to use a minimal number of calls to OpenAI APIs while keeping the context of the business plan.
Technologies: Natural Language Processing (NLP), Artificial Intelligence (AI), Architecture, Full-stack Development, Proof of Concept (POC), Deployment, APIs, Python, OpenAI, Minimum Viable Product (MVP), Automation, ChatGPT, Large Language Models (LLMs)
Web/Data Scraping Developer
2023 - 2023
National Marketing Services, Ltd
- Fixed an existing scraper to break Google's reCAPTCHA service.
- Optimized the scraper for faster running, as part of my role.
- Added new functionality to the existing scraper to meet the client's needs.
Technologies: Python, Data Scraping, Web Scraping, JavaScript, Selenium, CAPTCHA, Security
Full-stack Developer
2023 - 2023
OxSimStartup
- Developed an MVP to present the general idea to the investors.
- Used OpenAI models to simulate an interview process.
- Developed a small framework to handle all the needs related to interviews, from subjects to questions and predefined interviews.
Technologies: Full-stack, ChatGPT, Integration, Deployment, Architecture, Cloud, Full-stack Development, JavaScript, OpenAI GPT-4 API, OpenAI, PHP, Laravel, Stripe API, Minimum Viable Product (MVP), Large Language Models (LLMs), SaaS
Full-stack Developer
2023 - 2023
Nicefy
- Architected the infrastructure and the application to process emails robustly.
- Implemented the back-end and the front-end code to achieve the needs of the MVP.
- Configured hosting (DevOps) and set up a robust pipeline for automatic code deployment and alerts in case of app errors.
Technologies: IMAP, POP3, Artificial Intelligence (AI), APIs, Back-end, OpenAI GPT-4 API, OpenAI GPT-3 API, Large Language Models (LLMs), Laravel, PHP, Gmail API, SMTP, MySQL, Software Development, Minimum Viable Product (MVP), ChatGPT, SaaS, OpenAI
Full-stack Developer
2023 - 2023
Saif Taleb
- Developed an MVP mindmap generator based on a business idea.
- Integrated OpenAI APIs to achieve the best suggestions.
- Set up the hosting environment and the auto-deployment of the project in a clean and robust pipeline.
- Designed the whole architecture to make the system as robust as possible.
Technologies: Artificial Intelligence (AI), Visualization, APIs, Integration, ChatGPT, Architecture, Large Language Models (LLMs), OpenAI GPT-4 API, OpenAI GPT-3 API, Laravel, PHP, MySQL, Ubuntu Server, Linux, Software Development, Minimum Viable Product (MVP), SaaS, OpenAI
Server Security Expert
2023 - 2023
Jake and Company, LLC
- Found security breaches in the front end.
- Discovered security breaches in the back end.
- Provided solutions on how to fix the security breaches.
Technologies: Laravel, IT Security, Linux, Ubuntu, MySQL, Web Security, PHP, Laravel Forge, Penetration Testing, Vulnerability Assessment, Web App Security
Back-end Developer
2023 - 2023
Austin Westover
- Developed an app that nicely rephrase emails from sensitive people.
- Planned the infrastructure to keep the service secure.
- Integrated the system with several other systems via their APIs.
Technologies: IMAP, POP3, Artificial Intelligence (AI), APIs, Back-end, Laravel, Ubuntu, PHP, OpenAI GPT-4 API, OpenAI GPT-3 API, Sentry, Software Development, Minimum Viable Product (MVP), SaaS, OpenAI
Web Scraping Expert
2023 - 2023
Excede Ltd
- Did research to find sources for building the marketing list.
- Communicated with the client to be sure of what was truly needed.
- Developed scrapers to build a list of contacts for marketing purposes.
Technologies: Web Scraping, Data Scraping, Scraping, Python, PHP
PHP Specialist
2023 - 2023
Peachtree City Foamcraft, Inc.
- Converted their PHP 5 to PHP 8 codebase so the server upgrades could take place.
- Migrated from mail to property auth mailing system that reaches inbox.
- Secured their codebase as they had SQL injection still present, and they got hacked periodically.
Technologies: PHP, HTML, JavaScript, MySQL, CSS, Software Development
Scraping Expert
2023 - 2023
Erebos Technologies LLC
- Researched the market for relevant data (confidential reports).
- Worked closely with the stakeholders to understand their needs.
- Developed a small framework to gather data and created various reports with it to highlight what was required.
Technologies: Data Scraping, Strategy, Web Scraping, Proxy Servers, Python, PHP
PHP Developer
2021 - 2023
SolarPorts Development
- Developed a system that can let you create plans for the installation of solar panels via Google Maps Overlays. Handled the PDF generation of contract agreements, plans, and so on.
- Installed and secured the server to run the system.
- Helped to manage the project via Trello and daily and weekly meetings.
Technologies: PHP, HTML, CSS, JavaScript, WordPress, Apache, Apache2, MySQL, Laravel, Google Maps API, PDFtk, PDFLib, PDF.js, PDF, Web Security, Software Development, Minimum Viable Product (MVP)
Full-stack Developer
2017 - 2020
Freelance
- Built a management system for prepaid Visa debit cards from scratch. I worked here with many APIs, from card generation and exchange rates (via Visa API), to fintech APIs, shipping APIs, KYC check providers, and SMS APIs.
- Implemented an event and ticketing management system for a Caribbean company.
- Worked on nine projects for Toptal clients, ranging from small clients to enterprises.
- Collaborated on various other projects using a LAMP stack, mostly back ends, and scripts.
Technologies: Open Banking APIs, APIs, Shipping, Payment APIs, MySQL, Laravel, PHP, Apache2, Moodle, Arduino, Web App Security, Server Security, Web Security, Penetration Testing, REST API Clients, Google Maps API, Scraping, PDF Scraping, Web Scraping, Code Review, Source Code Review, Refactoring, REST APIs, REST, Architecture, Back-end, Inventory Management, Raspberry Pi, SendGrid API, Bootstrap, Bootstrap 3, Raspberry Pi 3 GPIO, Metasploit, MQTT, NodeMCU, ESP8266, CentOS, NMap, OWASP Top 10, OWASP, RFID, Documentation, Near-field Communication (NFC), PHP 8
Scraping Expert / Software Developer
2005 - 2018
Freelancer Platform
- Worked on a wide range of projects (over 400 projects and 260 reviews in December 2019). Projects ranged from web scrapers to home automation and complex back-end systems.
- Developed Arduino projects, ranging from simple ones to complete greenhouse management with watering, airflow, and temperature control.
- Built over 100 web scrapers that were fun to write, from simple ones to CAPTCHA-bypassing ones.
Technologies: PayPal API, eBay API, Facebook API, Google APIs, Arduino, JavaScript, C, PHP, Web App Security, IoT Security, Apache2, Apache, Linux, Ubuntu Linux, Web Scraping, Ubuntu, jQuery, Sqlmap, Burp Suite, HTML, HTML5, HTML5 APIs, CSS, LAMP, LAMP Server, SQL, Google API, Git, Subversion (SVN), Ubuntu Server, MySQL Server, IT Security, Back-end, Inventory Management, Raspberry Pi, SendGrid API, Bootstrap, Bootstrap 3, Raspberry Pi 3 GPIO, Metasploit, MQTT, NodeMCU, ESP8266, CentOS, NMap, OWASP Top 10, OWASP, Bioinformatics, Genomics, Biotechnology, Computational Biology, Automation
PHP Developer
2012 - 2013
Web Reservations International/Hostelworld.com
- Handled code review, fixes, code maintenance, and basic security.
- Suggested improving the existing codebase and building a plan for doing it.
- Managed to coordinate with a small team of developers to improve our conditions, thereby being more transparent on what we do.
Technologies: Zend Framework, PHP, MySQL, JavaScript, Back-end
Freelance PHP Developer
2011 - 2011
BRISK CODE SRL
- Contributed to the ad platform on security, optimizations, translation from one framework to another, and writing features.
- Trained the developer team to use subversion instead of doing manual code backups and other procedures.
- Managed to optimize the platform by over 30% in loading time for the visitor.
Technologies: Kohana, CodeIgniter, PHP, Subversion (SVN), Web App Security, Back-end, Metasploit, Twilio
Freelance PHP Developer
2010 - 2011
Best Of ARTISANS
- Fixed security and infrastructure issues they had from the previous team.
- Made the website scalable for traffic coming from advertising on France national TV.
- Optimized the system to bring it fast to an acceptable loading time and resource usage.
Technologies: PHP, HTML, CSS, LAMP, MySQL, Back-end, Metasploit
Freelance PHP Developer
2009 - 2010
SC ITNT SRL
- Contributed to an event management platform, from planning to coordinating with the other developers and writing most of the web app backbones.
- Designed and implemented a URL shortening service.
- Helped with the team training on various web technologies.
Technologies: Amazon Web Services (AWS), Kohana, PHP, Back-end
Co-founder and PHP Developer
2006 - 2010
SC Future Today SRL
- Designed and implemented several presentational websites for the communes of Brasov county.
- Managed two developers for the outsourced projects of the company.
- Learned a lot about the dos and don'ts of running a business.
Technologies: WordPress, PHP, Raspberry Pi
PHP Developer
2008 - 2009
Olive Studio
- Worked for an external client (Borsen.dk) as a remote team leader.
- Implemented a car review system in Tuksi CMS for a Danish client.
- Designed and implemented a shop for eye lenses using Magento.
Technologies: Magento, JavaScript, PHP, CMS Made Simple (CMSMS), Back-end, Web
InterSystems Cache Developer
2007 - 2008
SC. Eco Copy & Print SRL
- Created the 1st version of Meridiana Transfer, a payment system similar to Western Union.
- Learned a lot about commercial software from my colleagues.
- Worked on a package-distributor system but small bits of it, mostly barcode reading and processing inside the app.
Technologies: CSP, Databases, InterSystems Caché, Back-end
FoxPro Developer
2005 - 2006
EcoSoft SRL
- Helped the main developer write modules for an existing sales system.
- Developed a module that reads the barcode from a serial port via a device.
- Developed a module that unloaded barcodes scanned (and their quantities) via a portable device (inventory management).
Technologies: Visual FoxPro, Back-end
Experience
PlantaeDB
https://plantaedb.com/PlantaeDB is the comprehensive database for the kingdom Plantae.
Discover scientifically-proven uses, active compounds, taxonomy data, and more for most plants.
Discover scientifically-proven uses, active compounds, taxonomy data, and more for most plants.
Collection Management Platform
Allnumis community unites passionate people, providing free collaborative catalogs and tools for managing their personal collections, trade and swap lists, and wish lists.
Whether you like to collect coins, banknotes, community currencies, postal orders, bullion, tokens, medals, postcards, phone cards, stamps, or pins, on Allnumis you can learn more about them or you can share your knowledge with other collectors.
Whether you like to collect coins, banknotes, community currencies, postal orders, bullion, tokens, medals, postcards, phone cards, stamps, or pins, on Allnumis you can learn more about them or you can share your knowledge with other collectors.
Plants Management System
TagLog is an application along with a website (https://plants.taglog.app) that allows you to easily track changes (planting, fruiting, treatments, observations) about your plants, no matter if they are in your garden, orchard, or even your balcony.
Features:
• Use NFC tags or generate QR codes to use them as unique identifiers to your plants
• Scan the code easily to get all info about a plant
• Manage the places where you have the plants
• Manage your plants and log data about planting, harvesting, maintenance, treatments, and so on, including text, data, and images
• No ads
• Automatically synchronizes between devices
• All the data is stored in the cloud, backed up daily
Features:
• Use NFC tags or generate QR codes to use them as unique identifiers to your plants
• Scan the code easily to get all info about a plant
• Manage the places where you have the plants
• Manage your plants and log data about planting, harvesting, maintenance, treatments, and so on, including text, data, and images
• No ads
• Automatically synchronizes between devices
• All the data is stored in the cloud, backed up daily
Education
2022 - 2024
Master's Degree in Bioinformatics
University of Bucharest - Bucharest, Romania
2004 - 2008
Bachelor's Degree in Computer Science
Lucian Blaga University of Sibiu - Sibiu, Romania
Certifications
JANUARY 2022 - PRESENT
eJPT Junior Penetration Tester
eLearnSecurity
MAY 2020 - MAY 2023
AWS Certified Cloud Practitioner
Amazon Web Services Training and Certification
AUGUST 2019 - PRESENT
Introduction to TensorFlow for Artificial Intelligence, Machine Learning, and Deep Learning
Coursera
JULY 2015 - PRESENT
Finding Hidden Messages in DNA (Bioinformatics I)
Coursera
DECEMBER 2012 - PRESENT
Gamification
Coursera
Skills
Libraries/APIs
jQuery, Google API, eBay API, REST APIs, SendGrid API, Google Maps API, Google APIs, Facebook API, PayPal API, HTML5 APIs, TensorFlow, PDFLib, Gmail API, Stripe API, Protobuf, Authorize.net, OpenAI API
Tools
PhpStorm, MQTT, Sqlmap, Metasploit, NMap, Git, Subversion (SVN), InterSystems Caché, Moodle, Apache, PDFtk, Sentry, ChatGPT, GIS, Postman, DataTables, OpenAI o1, ChemDraw
Languages
HTML, PHP 7, PHP, SQL, PHP 8, Visual FoxPro, CSP, C, JavaScript, CSS, HTML5, Python
Frameworks
Kohana, Laravel, CodeIgniter, Zend Framework, Bootstrap, Bootstrap 3, Selenium
Paradigms
Automation, REST, Gamification, Refactoring, Penetration Testing, Model Context Protocol (MCP)
Platforms
Arduino, Web, LAMP, Ubuntu, Ubuntu Linux, Apache2, Burp Suite, Raspberry Pi, Raspberry Pi 3 GPIO, Amazon Web Services (AWS), Linux, Magento, WordPress, CentOS, PDF.js, Twilio, Google AppSheet
Storage
MySQL Server, MySQL, Databases, LAMP Server, Sphinx Search Engine
Industry Expertise
Bioinformatics
Other
APIs, Back-end, Software Development, Full-stack Development, API Integration, Back-end Development, Ubuntu Server, Server Security, OWASP Top 10, OWASP, Inventory Management, Documentation, Near-field Communication (NFC), RFID, Integration, OpenAI GPT-4 API, OpenAI GPT-3 API, Minimum Viable Product (MVP), QR Codes, Data Enrichment, Scraping, Web Scraping, Architecture, REST API Clients, Security, Payment APIs, Shipping, Open Banking APIs, Computer Science, Web App Security, IoT Security, Code Review, NodeMCU, ESP8266, Hacking, Web Security, PDF Scraping, Source Code Review, CMS Made Simple (CMSMS), IT Security, Biology, Chemistry, Genetics, DNA Sequencing, Psychology, Genomics, Biotechnology, Computational Biology, RNA Sequencing, Data Scraping, Strategy, Proxy Servers, PDF, IMAP, POP3, Artificial Intelligence (AI), Laravel Forge, Vulnerability Assessment, Visualization, Large Language Models (LLMs), SMTP, Full-stack, Deployment, Cloud, OpenAI, SaaS, CAPTCHA, Sphinx, Molecular Biology, Molecular Docking, Natural Language Processing (NLP), Proof of Concept (POC), Trading, Front-end Development, CQG, Futures, TailoredPay API, TT REST API, CQG WebAPI, CQG CMS API, Customer.io, Manticore Search, Reporting, Laravel Backpack, Document Parsing, Customer Relationship Management (CRM), Large Data Sets, Cheminformatics
Collaboration That Works
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