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Sergio Vazquez II
Full-Stack Senior Web Developer
Phone
(847) 372-7372
Location
Chicago, IL
Dear Hiring Manager,
Allow me to introduce myself - I am a Full-Stack Senior Web Application Developer and client-facing professional with over 25 years of front-end and back-end enterprise application development experience. My extensive background has equipped me with not only broad knowledge of the latest technologies, but the ability to instinctively identify potential pitfalls in advance.
Having worked directly with industry giants such as Johnson & Johnson, Disney, and Pfizer, I posses a deep understanding of the intricacies of enterprise development, as well as the crucial importance of best practices. These invaluable experiences also honed my skills in delivering high-quality deliverables, the ability to tackle complex challenges with ease and efficiency, and always maintaining a high level of professionalism and clear communication.
While my resume may reflect a creative flair, my strongest skillset is rooted in the code. I take pride in my ability to think outside the box and infuse creative thinking into my work, but my true passion still lies in crafting robust and scalable web applications. I am particularly drawn to opportunities that challenge me to push the boundaries of technology and foster innovation.
I am immediately available to embark on my next new challenge, and am eager to explore opportunities where I can make a meaningful impact. Whether it be front-end, back-end, or everything in between, my adaptable skillset and proven track record make me a valuable addition to any team, bringing a wealth of knowledge and experience to the table.
Thank you for your interest, and I welcome your response.

Sergio Vazquez II
Sergio Vazquez II
Full-Stack Developer
Talent hits a target
no one else can hit;
Genius hits a target
no one else can see.
Arthur Schopenhauer
Website
Phone
(847) 372-7372
Location
Chicago, IL
LinkedIn
Fun Fact #1
My IQ was 147 at 10 years old.
(top 0.2% in USA).
Einstein's IQ was 160.
Mensa requirement is 130.
The national average is 100.
Solving problems no one else can see
Expertise
Expert critical thinker with strong problem-solving skills, eagle eye for detail, instinctively grok complex concepts, deliver immaculate fully-commented code, and require little-to-no direction or guidance.
Perks
Additional disciplines in project management, team leadership, junior mentorship & guidance, code reviews, development life cycle, UI/UX design & engineering, web animation, video editing, audio editing, and more!
About Me
Technical Director, Senior Full-Stack Web Application Developer with over 25 years of real-world experience delivering complex enterprise web applications and solutions.
Specialty
Specialize in application architecture, scalability planning, OOP Frameworks, responsive development, technical oversight, root cause analysis, and user experience psychology.
Skills
Front-End Development
HTML5
• Canvas
• DOM
• CSS
• SASS
• Tailwind CSS
• Bootstrap
JavaScript
TypeScript
Alpine.js
jQuery
Vue.js
Svelte
SvelteKit
Back-End Development
PHP
CFML
SQL
JSON
XML
AJAX
• CodeIgniter
• Laravel
Drupal
ColdFusion
Lucee
MySQL
MariaDB
Aurora
Competencies
AWS
Pantheon
Agile
SCRUM
Kanban
Git
Git-Flow
CI/CD
OOP
MVC
Wireframing
Prototyping
UI/UX
Design Systems
Best Practices
Code Quality
Unit Testing
Test-Driven Development
Google Analytics
Tools
JetBrains
Code editor
ClickUp
Project planning
Jira
Project management
Slack
Team communication
Postman
API testing
Navicat
Database management
Sourcetree
Git client
Jenkins
Automation server
WordPress
Website builder
Figma
UI Design, prototyping
Zeplin
Design delivery
Pinegrow
Visual web editor
Jekyll
Generator framework
Adobe CC
Design workspace
Sergio Vazquez II
Full-Stack Developer
If the path before you
is clear, you're probably
on someone else's.
Carl G. Jung
Website
Phone
(847) 372-7372
Location
Chicago, IL
LinkedIn
Fun Fact #2
I developed my first application,
a Choose-Your-Own-Adventure game, in Microsoft BASIC on a Commodore 128 when I was 12 years old.
Experience
Aug 2022 - May 2024
Remote contract
Senior Tech Lead /
Application Architect
Women Who Create
Designed and built a mobile-optimized web app to enable aspiring women of color to find and connect with mentors in their industries. Led the project from concept to deployment, handling functional and technical requirements, tech stack selection, application and database architecture, and project management in ClickUp. Conducted weekly Zoom calls, directed creative efforts based on Figma designs, and built both the front-end with Tailwind CSS and Alpine.js and the back-end with CodeIgniter 4. Set up and deployed the web server on AWS, ensuring the app was robust, scalable, and secure.
Responsive HTML, Tailwind CSS, CodeIgniter 4 (PHP 8), Alpine.js, Figma, Zeplin, JavaScript, MariaDB, AWS
Jan 2021 - May 2022
Remote contract
Senior Tech Lead /
Application Architect
Trading Board
Designed and built a Multi-Vendor eCommerce Marketplace where users can buy, sell, and trade board games using a points-based bartering system. Transformed a website concept into a fully functional eCommerce platform, managing all aspects from functional and technical requirements to tech stack selection and application architecture. Built the front-end using Tailwind CSS and Alpine.js and integrated a custom Svelte component for lists. The back-end was developed on CodeIgniter 4, with a seamless PayPal and Crypto payment integration and BoardGameGeek API integration. Deployed the platform on AWS and oversaw project management and creative direction via ClickUp and Figma.
CodeIgniter 4 (PHP 8), Tailwind CSS, Alpine.js, Svelte, Latte, Hugo, Bootstrap 5, Figma, Zeplin, JavaScript, AJAX, MariaDB, PayPal Integration, AWS, Responsive HTML
Feb 2019 - Sep 2020
Remote contract
Senior Web Developer /
System Architect
Rotary International
Developed a Digital Asset Management System to enhance creative control for Rotary's thousands of branches, integrating it with WebDAM SAAS and Rotary's custom Drupal framework. Led the project from Illustrator COMPS to a functional PHP prototype, which was then ported to Drupal for seamless integration. Managed a team to complete API integration with WebDAM, conducted extensive testing, and coordinated a phased global rollout. The system, one of Rotary's largest internal projects, continues to support their global operations efficiently.
Responsive HTML, Drupal, Foundation, JavaScript, jQuery, AJAX, REST APIs, XML, PHP, MySQL, Node.js, SASS/SCSS, Pantheon
Sep 2018 - Jan 2019
Hybrid contract
Senior Web Developer
Dragonspears
Led a large data migration project for Platinum Pest Solutions, refactoring their legacy Laravel system from version 3.1 to 5.7 and planning an immediate upgrade to 6.0. Managed the migration of a complex database with over 1300 tables, mapping all data from scratch due to the lack of documentation. Assumed the role of project lead and client-facing spokesperson upon recognizing the project's scope, guiding the team through the refactoring and dynamic reporting implementation with live filtering in Laravel.
Laravel, Blade, Eloquent, PHP, MySQL, AWS, Bootstrap, JavaScript, Altova MapForce, HTML, CSS
Feb 2017 - Jul 2018
Remote contract
Senior Tech Lead /
System Architect
Allegion
Designed and implemented the Allegion Merchandising Portal, a Points Redemption Program for top sales reps to redeem earned points for goods and services. Managed the project from concept to deployment, overseeing functional and technical requirements, tech stack selection, and application and database architecture. Integrated the portal with an existing warehouse management system, facilitated phased rollouts, and provided features such as custom logins, points management, and hierarchical user administration. Leveraged my long-term relationship with Allegion to ensure seamless integration and user satisfaction.
ColdFusion, MySQL, Bootstrap, JavaScript, HTML, CSS, AWS, JSON
Oct 2015 - Dec 2016
Hybrid contract
Senior Drupal Developer
Farm Journal Media
Maintained nine existing Drupal 6 properties and spearheaded the rebuild of all sites in Drupal 8. Joined the team amid a critical transition period, where original developers departed post-acquisition, and quickly learned and documented the legacy Drupal 6 sites. Planned the refactor to Drupal 8 over a year, while managing smaller WordPress sites and promotional programs in Marketo. Converting the sites from Drupal 6 to Drupal 8 was a significant undertaking that required meticulous planning and execution.
Drupal 7/8, PHP, MySQL, Microsoft SQL, PostgreSQL, Marketo, HTML, CSS, Jira, Git, Analytics, WordPress, Logi Analytics
Feb 2014 - Jun 2015
Hybrid contract
Senior Web Developer
Gogo
Developed an internal in-flight customer purchase path experience for use on major airlines, collaborating closely with the creative team to meet pixel-perfect specifications. Personally streamlined the tech stack, significantly reducing delivery costs by over $700,000 a month. Managed the front-end development with a keen eye for UI/UX, ensuring a seamless integration with the back-end code and enhancing the overall in-flight user experience.
Responsive HTML, JavaScript, jQuery, Foundation, Node.js, Gulp.js, Mustache.js, AJAX, JSON, LESS, ASP.NET, Google Analytics
Apr 2012 - Dec 2013
Remote contract
Senior Tech Lead /
System Architect
Ingersoll Rand
Designed and developed a comprehensive Online Ordering & Inventory Management System over ten years, evolving it into a full-scale inventory and warehouse management solution. Managed live inventory, online ordering, shipping, receiving, billing, and reporting, integrating with UPS, FedEx, and Amazon Seller Central APIs. Directed the project from functional and technical requirements to deployment, ensuring robust application architecture and seamless integration within Ingersoll Rand's vast operational framework.
ColdFusion, MySQL, JavaScript, HTML, CSS, AJAX, XML
Jul 2008 - Apr 2012
Chicago
Senior Web Developer
Euro RSCG Chicago
Developed interactive website solutions and global marketing campaigns for multiple large brands, initially joining to assist with Potbelly.com. Quickly advanced to lead Adobe Flash developer, recognized as one of the top Flash developers in Chicago. Built numerous high-profile sites, including Michelob.com, Barilla.com, and Effen.com, as well as numerous microsites for Sprint.com. Contributed to countless banner ad and email campaigns, helping establish the agency's digital presence until its rebranding in 2012.
Adobe Flash, ActionScript, GreenSock GSAP, FlashTalking, Akamai, GAIA Framework, Photoshop, Illustrator, Adobe Media Encoder, Adobe Audition, MySQL, Flex, Flash Builder, HTML Emails, CSS
Feb 2007 - Apr 2008
Remote contract
Senior Tech Lead /
System Architect
Kryptonite (IR)
Designed and implemented a global "Lock Exchange Program" to recall over 5 million faulty locks, integrating multiple systems to manage claims, RMAs, and UPS Call Tags. Led the project from concept to global deployment, managing front-end and back-end development, technical requirements, project management, and multi-language support. The program, driven by a viral YouTube video, mitigated significant reputational damage for Kryptonite and required processing thousands of RMAs bi-weekly, demonstrating expertise in large-scale system integration and crisis management.
ColdFusion, MySQL, UPS WorldShip, JavaScript, HTML, CSS, XML
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