Justin Juarez

Full-stack Engineer • Harlingen, TX, US

Full Stack Development

Python

Next.js

React

TypeScript

Django

Wordpress

Elementor

E-Commerce

Node.js

Express.js

Redux

Tailwind CSS

Github

MySQL

PostgreSQL

MongoDB

Docker

Amazon Web Services

Microsoft Azure

Available for hire fromNegotiable

I'm a Full-Stack Developer with 10+ years of crafting high-performance digital experiences. 🛠️ JavaScript specialist bridging pixel-perfect UIs with bulletproof backend systems - equally comfortable in eCommerce trenches or SaaS scaling battles. Commerce & Integration Superpowers 🛒 WordPress Ecosystem Master Built 30+ custom apps with Node.js/React integrations Developed headless storefronts hitting 95+ Lighthouse scores Engineered real-time inventory sync for 50K+ SKU catalogs ⚡ Full-Stack Velocity Frontend: Next.js | React | TypeScript | Svelte Backend: Python/Django | Node.js | NestJS | Mobile: React Native | Expo (iOS/Android) | Flutter Database: PostgreSQL | MongoDB | Redis AI: ChatGPT, Perplexity, Google Gemini How I Drive Business Impact 📈 ROI-Focused Development -Boosted eCommerce conversion rates by 22% through checkout optimizations -Slashed mobile bounce rates by 40% with React Native performance tuning -Automated WordPress<>ERP integrations saving 200+ operational hours/month 🛡️ Future-Proof Architecture -Migrated 15 legacy systems to modern stacks (MERN, JAMstack) -Implemented CI/CD pipelines enabling 20+ daily deployments -Architected microservices handling 10K+ concurrent users Why Teams Love Working With Me -T-Shaped Expertise - Deep in JavaScript, wide in business strategy -Zero Black Boxes - Documented, maintainable code with 90%+ test coverage -Solution Multiplier - Every feature designed for extensibility Let's build something that doesn't just work - but dominates.

Projects

Mercari | TypeScript | Next | Python

Mercari tasked me with building their fashion marketplace from scratch, developing a seamless website with Next.js and a mobile app using React Native. My focus was on enhancing the user experience through intuitive navigation and advanced search functions. Collaborating with the development team, we ensured the platform offered personalized recommendations and easy browsing. This project resulted in a polished and engaging shopping experience, aligning with Mercari's high standards for user satisfaction.See More

Chewy | Next | Python | React Native

Chewy engaged me to enhance their website's user experience and streamline pet care services. I focused on creating a seamless interface that integrates 24/7 customer care, a licensed vet chat feature, and quick access to prescription medications. The project also included developing personalized pet insurance options. By aligning with Chewy's mission, the site effectively supports users in managing their pet's health and wellbeing, resulting in positive feedback from both the client and users.See More

One10 Marketing Website – WordPress-Elementor

The One10 Marketing site was built using WordPress with Elementor as the page builder. It delivers a clean, corporate design to showcase One10’s key services—Incentives, Events, Analytics, and Engagement Platforms. -Using Elementor, the site features: -Flexible, modular layouts -Custom sections for programs, case studies, and software tools -Interactive content and easy content management This setup ensures fast updates, responsive design, and a polished user experience aligned with One10’s brand.See More

Airstream | WordPress | Elementor

The Airstream website showcases the iconic American RV brand known for its polished aluminum travel trailers. Built with a strong visual identity, the site reflects Airstream’s legacy of craftsmanship, innovation, and adventure. Key features: -Brand storytelling with heritage timelines and founder history -Product showcase for trailers, touring coaches, and limited editions -High-end design emphasizing luxury, performance, and community -Built for user experience, with strong mobile optimization and clear navigation The site captures Airstream’s spirit—blending tradition with modern travel lifestyle. See More

Work History

Senior Full-Stack Developer

Hike2– Led development of wholesale commerce platform serving 10K+ merchants using Node.js and Next.js – Architected event-driven microservices that improved order processing speed by 40% – Spearheaded migration from JavaScript to TypeScript, reducing production bugs by 35% – Designed PostgreSQL schemas for high-volume inventory management (50M+ SKUs) – Implemented Redis caching layer that decreased API latency from 800ms → 120ms – Established CI/CD pipelines with GitHub Actions, enabling 50+ daily deployments – Mentored 4 junior engineers in system design and performance optimization

Full-Stack Engineer

Scaled Agile, Inc.Sep 2017 - Mar 2022 • 4 yrs 7 mos– Built RESTful APIs handling 5M+ monthly requests for B2B marketplace – Developed real-time pricing engine using Node.js that processed 1M+ price updates/day – Optimized MySQL queries reducing checkout latency by 60% during peak loads – Created developer onboarding program that reduced ramp-up time by 3 weeks

Frontend Developer

OneTrustOct 2015 - Sep 2017 • 2 yrs– Implemented Next.js SSR for e-commerce frontend, improving SEO traffic by 75% – Designed WebSocket service for live order tracking (5K concurrent connections) – Automated inventory reconciliation system that reduced accounting errors by 90% - Developed and integrated custom Shopify apps to enhance store functionality and streamline operations

Junior Software Developer

Turing School of SoftwareJul 2013 - Oct 2015 • 2 yrs 4 mos– Developed and maintained Node.js API endpoints under senior guidance, supporting core platform functionality – Assisted in building Next.js frontend components using TypeScript, improving page load times by 25% – Supported database optimization efforts by writing efficient PostgreSQL queries for reporting features – Fixed 50+ minor bugs across the stack, gaining exposure to full-system debugging techniques

Education

Nova Southeastern University (NSU)

Bachelor of Technology, Computer Science2010 - 2013

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