David Gucwa
Verified Expert in Engineering
Full-stack Developer
Tewksbury, MA, United States
Toptal member since July 23, 2020
David began programming computers at the age of five, after his father brought home a Commodore VIC-20. It quickly became a fascination, later a hobby, and eventually a career. David is now a web developer with over 15 years of work experience and a member of American Mensa. He takes pride in his code's organization, elegance, and efficiency, and in his ability to solve problems creatively. David feels comfortable coding for basically any project -- he's been doing it his entire life.
Portfolio
Experience
- Databases - 20 years
- Algorithms - 20 years
- Mathematics - 20 years
- Optimization - 20 years
- PHP - 18 years
- MySQL - 18 years
- Unix Shell Scripting - 15 years
- APIs - 5 years
Availability
Preferred Environment
SQL, PHP, Unix
The most amazing...
...product I've created is a reporting platform built from scratch to handle the needs of thousands of major clients, including McDonald's, TD Bank, USPS, and BP.
Work Experience
Senior Developer
SurfMerchants
- Designed and built a customizable reporting platform for customer survey data, handling tens of millions of database records and used by major international clients, including USPS, TD Bank, Google, and BP.
- Led a team of six LAMP developers in maintaining our product's code and adding new features.
- Wrote deep analytic tools to help clients better understand their data.
- Integrated our product with multiple third-party REST APIs.
- Built internal tools to make our own teams more productive.
- Upgraded tens of thousands of lines of code in our legacy product to be PHP 7 compliant.
- Optimized our code and database as needed to handle user requests in minimal time.
Developer
ConnectU
- Added functionality to our social networking platform.
- Maintained and optimized our product's MySQL databases.
- Implemented a security system for online transactions.
Developer
Genevate
- Built a content management system for commercial websites.
- Established and maintained several databases using MySQL.
- Created reusable HTML templates for our content management system.
Experience
Dragon Reporting
https://site.sassieshop.com/reporting/dragon/Education
Bachelor of Science Degree in Computer Science
University of Massachusetts at Amherst - Amherst, MA, United States
Skills
Libraries/APIs
REST APIs, Highcharts, jQuery, React, Stripe Connect API, Stripe Connect, TensorFlow
Tools
Git, PhpStorm, Stripe Checkout
Languages
PHP, PHP 7, HTML, CSS, JavaScript, Java, Python, SQL
Storage
MySQL, Databases
Frameworks
Twig, Laravel, CodeIgniter, Symfony, Smarty
Platforms
Unix, Amazon Web Services (AWS)
Other
APIs, Reports, Algorithms, Unix Shell Scripting, Reporting, Optimization, Mathematics, Back-end, Front-end, Full-stack
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