Top Talent like Justin are on Pangea

Pangea, a YC company, connects companies with fractional talent. Fractional hiring allows companies to move faster and work with more specilaized talent, while giving talent more flexibilty and independence. If you are talent open to fractional work, apply here. If you’re a company looking for high-quality fractional talent, learn more here.
Recently Active

Justin Juarez

Full-stack Engineer • Harlingen, TX, US
Full Stack Development
TypeScript
Next.js
React
E-Commerce
Node.js
Express.js
Redux
Tailwind CSS
Shopify
Svelte
Github
MySQL
PostgreSQL
Python
MongoDB
Docker
Amazon Web Services
Microsoft Azure
Available for hire fromNegotiable
Full-Stack Software Engineer | Ecommerce | TypeScript | Next | React Native | Node | Shopify | AWS
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 🛒 Shopify 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: Node.js | NestJS | Python/Django Mobile: React Native | Expo (iOS/Android) Database: PostgreSQL | MongoDB | Redis 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 Shopify<>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 | React Native

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 | TypeScript | React | Next | 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

Tecno Ant | Shopify | JavaScript

TechnoAnt hired me to build their Shopify store from scratch. I developed the new store, integrated dynamic products, and set up unique features like an affiliate program and order tracking. I collaborated closely with their designer to ensure the site reflected their brand vision. As highlighted in TechnoAnt's feedback, the site meets all their specifications and is fully functional, offering a seamless user experience.See More

Acedevshop Agency | JavaScript | React | Next

Acedevshop: Crafting Digital Experiences That Drive Growth

Work History

H

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
S

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
O

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
T

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

How Pangea Works

Effortlessly discover top talent

We’ve distilled the candidate search from endless hours down to just a few minutes. Using Pangea’s AI-powered search tools, you can find top fractional talent able to take on your next project. Our system looks at your company’s niche and your needs to find the perfect match faster than any traditional hiring platform.

Start working with talent today

The top talent on Pangea is ready to get started with you right now. You can message or hire a candidate right from their profile page and start assigning work as soon as they respond. And the best part? Pangea’s fractional contract structure lets you start small and ramp up as your needs change, keeping your costs manageable and your team’s capabliities flexible.

Track work and invoices in one place

Assign tasks, track progress, and complete invoices all on Pangea. We’ve combined every part of the hiring process into one platform to eliminate the miscommunication that’s unavoidable on other freelance platforms. We even send out 1099s to your contractors at the end of the year!

Talk with a Talent Expert

Members of our team are available to help you speed through the hiring process.
Available Now
Book a Call
Recently Active
Full-Stack Software Engineer | Ecommerce | TypeScript | Next | React Native | Node | Shopify | AWS
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 🛒 Shopify 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: Node.js | NestJS | Python/Django Mobile: React Native | Expo (iOS/Android) Database: PostgreSQL | MongoDB | Redis 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 Shopify<>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.

Talk with a Talent Expert

Members of our team are available to help you speed through the hiring process.
Available Now
Book a Call

Top Talent like Justin are on Pangea

Pangea, a YC company, connects companies with fractional talent. Fractional hiring allows companies to move faster and work with more specilaized talent, while giving talent more flexibilty and independence. If you are talent open to fractional work, apply here. If you’re a company looking for high-quality fractional talent, learn more here.

Justin Juarez

Full-stack Engineer • Harlingen, TX, US
Full Stack Development
TypeScript
Next.js
React
E-Commerce
Node.js
Express.js
Redux
Tailwind CSS
Shopify
Svelte
Github
MySQL
PostgreSQL
Python
MongoDB
Docker
Amazon Web Services
Microsoft Azure
Available for hire fromNegotiable

Projects

Mercari | TypeScript | Next | React Native

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.

Chewy | TypeScript | React | Next | 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.

Tecno Ant | Shopify | JavaScript

TechnoAnt hired me to build their Shopify store from scratch. I developed the new store, integrated dynamic products, and set up unique features like an affiliate program and order tracking. I collaborated closely with their designer to ensure the site reflected their brand vision. As highlighted in TechnoAnt's feedback, the site meets all their specifications and is fully functional, offering a seamless user experience.

Acedevshop Agency | JavaScript | React | Next

Acedevshop: Crafting Digital Experiences That Drive Growth

Work History

H

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
S

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
O

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
T

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

How Pangea Works

Effortlessly discover top talent

We’ve distilled the candidate search from endless hours down to just a few minutes. Using Pangea’s AI-powered search tools, you can find top fractional talent able to take on your next project. Our system looks at your company’s niche and your needs to find the perfect match faster than any traditional hiring platform.

Start working with talent today

The top talent on Pangea is ready to get started with you right now. You can message or hire a candidate right from their profile page and start assigning work as soon as they respond. And the best part? Pangea’s fractional contract structure lets you start small and ramp up as your needs change, keeping your costs manageable and your team’s capabliities flexible.

Track work and invoices in one place

Assign tasks, track progress, and complete invoices all on Pangea. We’ve combined every part of the hiring process into one platform to eliminate the miscommunication that’s unavoidable on other freelance platforms. We even send out 1099s to your contractors at the end of the year!

Talk with a Talent Expert

Members of our team are available to help you speed through the hiring process.
Available Now
Book a Call
Pangea empowers fractional work across the world for marketing and design roles.