David J. Sloan

Professional Summary

I’m a results-driven software engineer and systems architect with 15+ years of experience designing and delivering end-to-end digital solutions for startups, enterprises, and government agencies. My core strength is translating complex business needs into scalable, maintainable software that drives real-world impact—boosting revenue, streamlining operations, and cutting response times.

From building $1.5M+ lead-gen platforms and CRM-integrated web applications to managing cross-functional teams and migrating legacy systems, I bring a unique blend of technical depth, client empathy, and executional clarity.

Core Strengths

Custom Web Application Development – Full-stack delivery using PHP, Node.js, React, Angular, WordPress, Symfony
API Architecture & Integration – RESTful API design, CRM/data pipeline connections, custom workflows
Enterprise & Government Solutions – Deep experience with scalable, secure platforms in regulated environments
Cloud & DevOps Fluency – AWS (EC2, S3, Lambda), Docker, CI/CD, Jenkins, Agile environments
Business Impact Engineering – Proven ability to align technical solutions with client goals and revenue outcomes

Highlighted Results

💰 $1.5M+ in revenue generated in year one for a custom-built lead-gen and CRM integration platform
🧠 Cut response time by 66% at Orange Business Services by reengineering support and delivery processes
📈 Improved sprint efficiency by 10% at Electronic Arts through agile practices and close product collaboration
🏛 Built custom reservation and payment portals for state agencies (Georgia DOE & GCSS), fully integrated with CRMs

Recent Freelance Projects (2012 – Present)

Independent Consultant – Full-Stack Engineer & Architect

Delivering tailored web applications, integrations, and systems for clients in government, education, gaming, and tech.

Select Clients & Projects:

Georgia Department of Education

Developed a custom CRM-connected reservation system for state events
Integrated payment processing (Authorize.net) for seamless registration and reconciliation

Georgia Council for the Social Studies (2024 & 2012)

Redesigned the organization’s WordPress site to support conference signups, CRM data capture, and secure payments
Streamlined event operations and data tracking via backend automation

Easiest Systems

Built a full-stack lead generation platform using Node.js, MongoDB, and Angular
Delivered a custom API and CRM integration that helped generate over $1.5M in first-year sales

Cynergen (Startup)

Designed a high-efficiency video delivery solution for gaming consoles
Enabled segmented file processing across devices to cut video load and encoding times

Previous Experience

Senior Web Developer – Electronic Arts (2008 – 2012)

Led backend development for EA’s digital distribution platforms (PHP, Rails)
Integrated social features, e-commerce tools, and third-party acquisitions (e.g., Rupture) into EA’s tech stack
Collaborated with product teams to translate vision into user-ready apps, improving time-to-market and sprint velocity

Solutions Architect / Consultant – Orange Business Services (2001 – 2008)

Architected enterprise messaging, hosting, and security solutions for Fortune 500 clients including Coca-Cola
Developed middleware that connected legacy video delivery, document storage, and internal portals
Managed cross-border engineering teams and led development of a client-facing statistical reporting portal
Recognized with two consecutive Excellent Achievers Awards for delivery excellence

Software Engineer – SITA (1998 – 2001)

Designed a multi-format message billing platform using C++, JavaScript, and Perl
Built a billing engine capable of parsing 15+ log formats and automating accounting workflows
Contributed to product planning across billing, legal, and ops to ensure regulatory compliance

Technical Skills

Languages: PHP, Node.js, JavaScript/TypeScript, Python, C++, HTML/CSS/SASS
Frameworks: Symfony, WordPress, React, Angular, Express, Yii, jQuery
Databases: MySQL, MongoDB
Platforms & Tools: AWS (EC2, S3, Lambda), Heroku, Docker, Jenkins, Git, VS Code, Apache, Nginx
Methodologies: Agile, CI/CD, DevOps
Specialties: API Development, CRM Integration, Technical Strategy

Soft Skills

Cross-functional collaboration with product and business stakeholders
Technical liaison between developers, management, and clients
Fast problem-solving under changing requirements
Excellent communicator and team leader

Professional Memberships

IEEE Computer Society
Association for Computing Machinery (ACM)