David Ewing
Verified Expert in Engineering
PHP Developer
Spring Hill, TN, United States
Toptal member since April 11, 2014
Computers are David's passion—a hobby that became his career. He loves solving puzzles and looks forward to overcoming any obstacle that comes his way. He loves helping people and maintains excellent customer relations.
Portfolio
Experience
- Linux - 20 years
- JavaScript - 19 years
- Python - 19 years
- Object-oriented Programming (OOP) - 19 years
- MySQL - 19 years
- Vim Text Editor - 19 years
- PHP - 19 years
- Git - 18 years
Preferred Environment
Git, Vim Text Editor, Linux
The most amazing...
...thing I've built is a PHP/Ajax CMS featuring real-time preview of changes before they are applied.
Work Experience
Engineering Manager — Core Systems & Architecture
Ludi
- Owned the operational execution of a massive core application rebuild, migrating highly complex legacy systems over to a performant PHP 8.3/Laravel architecture.
- Spearheaded the company-wide transformation of development processes, introducing automated CI/CD security pipelines, quality gates, and rigorous code formatting standards.
- Took full ownership of the developer onboarding lifecycle, refactoring internal runtime environments to slash engineer startup times from days to under an hour.
- Partnered directly across product and executive lines to run comprehensive project scoping, ruthlessly managing timelines and reducing development effort to guarantee predictable delivery.
Senior Team Lead
Typhoon On Demand
- Built a set of API endpoints to allow the front-end to check payment statuses.
- Integrated with Stripe's API to allow management of Stripe Express account creation.
- Added support to process payout transfers via Stripe's API.
Engineering Delivery Manager — Platform Scalability
Tradefull / AreaTrend
- Identified and eliminated structural code bottlenecks across high-traffic platforms, driving refactoring strategies that boosted platform response speeds by 10x.
- Integrated robotics platform into the WMS to augment warehousing staff.
- Directed a distributed engineering unit, taking full accountability for roadmap planning, sprint sequencing, and daily development velocity.
- Built out integrations with multiple third-party APIs, as well as maintaining an internal API.
Senior PHP Developer
CommPartners
- Maintained and updated multiple legacy applications.
- Migrated a large existing system from Laravel 4 to Laravel 5 and from Bootstrap 2 to Bootstrap 4.
- Performed database query optimizations to reduce query counts and improve database performance.
- Optimized database table structures to improve query performance and simplify the associated PHP code.
- Added multiple third-party API integrations for account management and payment processing.
- Maintained and updated a custom reporting API for both in-house and customer use.
- Performed large-scale system-wide refactorings to reduce technical debt.
Software Developer
Robertson Heating Supply
- Created and maintained multiple APIs for internal and external use.
- Administered multiple Debian Linux and Windows servers.
- Created multiple PHP/Ajax content management systems, including one with a real-time preview of multiple data formats and sources.
- Created a program to integrate with the Postfix email pipeline to parse, archive, and de-duplicate attachments on all incoming and outgoing messages.
- Developed a Flash application in Flex/ActionScript to manage communication with a select group of customers via their preferred method (fax, mail, or email).
- Developed and maintained an online catalog system.
- Created a tool to automatically parse PDF documents and import customer-specific details.
Experience
CommPartners - Elevate LMS
Robertson Heating Supply
Education
Bachelor's Degree in Computer Science
Mount Union College - Alliance, Ohio
Skills
Libraries/APIs
REST APIs, jQuery, Twilio API, Stripe API, Stripe, SQLAlchemy
Tools
Vim Text Editor, Git, Docker Compose, GitHub, GitLab, GitLab CI/CD, PyCharm, PhpStorm, Apache, Elastic, Jira, Slack, Postman, Stripe Express
Languages
PHP, SQL, JavaScript, Python, HTML, Python 3, HTML5, Flash ActionScript, Nim, C, CSS
Frameworks
Laravel, Smarty, Flex, Flask, Django, Twig, Tailwind CSS
Paradigms
Test-driven Development (TDD), Object-oriented Programming (OOP), Code Refactoring, Unit Testing, REST, Agile, DevOps, Web Architecture
Platforms
Linux, Docker, Windows, Windows Server, Twilio, Apache2, LAMP, Amazon Web Services (AWS)
Storage
Databases, MySQL, Database Management, Redis, Elasticsearch, Microsoft SQL Server, PostgreSQL
Other
Back-end, Legacy Code, Static Analysis, Web Applications, Legacy Software, Web Development, Multi-tenant Architecture, SaaS, APIs, Static Application Security Testing (SAST), Source Code Review, CI/CD Pipelines, Distributed Systems, Architecture, Learning Management Systems (LMS), Code Review, Security, Multi-tenant SaaS, Software Architecture, eCommerce, Technical Leadership, Performance Optimization, Observability, Engineering Management, Robotics, Computer Science, Project Planning, APIFlask, Payment APIs
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