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I’m a senior React developer with 5 years of experience delivering scalable, high-quality applications across Europe and North America. In addition to contract work for global companies, I’ve also launched my own SaaS businesses from scratch, experience that has given me a unique ability to think not just as a developer, but also as a builder who understands product and business needs. I’ve also built numerous applications on Qortal (Q-Apps) using React, gaining deep hands-on experience with decentralized and emerging technologies. This entrepreneurial and forward-looking background sets me apart from most developers, as I can bridge both technical execution and product vision. Key strengths: - React, TypeScript, modern front-end tooling - SaaS product development from zero to launch - Decentralized/web3 experience (Qortal Q-Apps) - Agile/Scrum experience - Strong communication and remote-first collaboration - Based in Eastern Europe with reliable EU timezone overlap I’m currently open for a new permanent or contract role starting immediately. I’d be happy to discuss how I can help your team achieve its goals. Best regards, Justin…I’m a senior React developer with 5 years of experience delivering scalable, high-quality applications across Europe and North America. In addition to contract work for global companies, I’ve also launched my own SaaS businesses from scratch, experience that has given me a unique ability to think not just as a developer, but also as a builder who understands product and business needs. I’ve also built numerous applications on Qortal (Q-Apps) using React, gaining deep hands-on experience with decentralized and emerging technologies. This entrepreneurial and forward-looking background sets me apart from most developers, as I can bridge both technical execution and product vision. Key strengths: - React, TypeScript, modern front-end tooling - SaaS product development from zero to launch - Decentralized/web3 experience (Qortal Q-Apps) - Agile/Scrum experience - Strong communication and remote-first collaboration - Based in Eastern Europe with reliable EU timezone overlap I’m currently open for a new permanent or contract role starting immediately. I’d be happy to discuss how I can help your team achieve its goals. Best regards, Justin

Justin Ferrari

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I’m a senior React developer with 5 years of experience delivering scalable, high-quality applications across Europe and North America. In addition to contract work for global companies, I’ve also launched my own SaaS businesses from scratch, experience that has given me a unique ability to think not just as a developer, but also as a builder who understands product and business needs. I’ve also built numerous applications on Qortal (Q-Apps) using React, gaining deep hands-on experience with decentralized and emerging technologies. This entrepreneurial and forward-looking background sets me apart from most developers, as I can bridge both technical execution and product vision. Key strengths: - React, TypeScript, modern front-end tooling - SaaS product development from zero to launch - Decentralized/web3 experience (Qortal Q-Apps) - Agile/Scrum experience - Strong communication and remote-first collaboration - Based in Eastern Europe with reliable EU timezone overlap I’m currently open for a new permanent or contract role starting immediately. I’d be happy to discuss how I can help your team achieve its goals. Best regards, Justin…I’m a senior React developer with 5 years of experience delivering scalable, high-quality applications across Europe and North America. In addition to contract work for global companies, I’ve also launched my own SaaS businesses from scratch, experience that has given me a unique ability to think not just as a developer, but also as a builder who understands product and business needs. I’ve also built numerous applications on Qortal (Q-Apps) using React, gaining deep hands-on experience with decentralized and emerging technologies. This entrepreneurial and forward-looking background sets me apart from most developers, as I can bridge both technical execution and product vision. Key strengths: - React, TypeScript, modern front-end tooling - SaaS product development from zero to launch - Decentralized/web3 experience (Qortal Q-Apps) - Agile/Scrum experience - Strong communication and remote-first collaboration - Based in Eastern Europe with reliable EU timezone overlap I’m currently open for a new permanent or contract role starting immediately. I’d be happy to discuss how I can help your team achieve its goals. Best regards, Justin

Available to hire

I’m a senior React developer with 5 years of experience delivering scalable, high-quality applications across Europe and North America. In addition to contract work for global companies, I’ve also launched my own SaaS businesses from scratch, experience that has given me a unique ability to think not just as a developer, but also as a builder who understands product and business needs.

I’ve also built numerous applications on Qortal (Q-Apps) using React, gaining deep hands-on experience with decentralized and emerging technologies. This entrepreneurial and forward-looking background sets me apart from most developers, as I can bridge both technical execution and product vision.

Key strengths:

React, TypeScript, modern front-end tooling
SaaS product development from zero to launch
Decentralized/web3 experience (Qortal Q-Apps)
Agile/Scrum experience
Strong communication and remote-first collaboration
Based in Eastern Europe with reliable EU timezone overlap

I’m currently open for a new permanent or contract role starting immediately. I’d be happy to discuss how I can help your team achieve its goals.

Best regards,

Justin

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

React Contractor at Coca-Cola HBC

April 1, 2023 - October 1, 2025

Contributed to Coca-Cola HBC’s e-commerce app using React, delivering robust, responsive designs in a large-scale enterprise environment with complex architecture; collaborated across multiple teams and time zones to deliver high-quality code under strict deadlines.

Node.js Developer at Walmart

March 1, 2023 - December 31, 2023

Maintained Walmart’s credit card payment systems built with Node.js, TypeScript, and MongoDB. Tested new functionality using Jest. Worked in an agile methodology with daily standups and bi-weekly sprints.

JavaScript Developer / Community Member / Marketer at Qortal.dev

September 1, 2022 - Present

Built Qortal.dev from scratch with React, Node.js, Next.js, Styled Components, Redux. Onboarded 150+ new blockchain users, improved accessibility and adoption, developed decentralized Q-Apps and rebuilt chat interface. Managed marketing: secured listings on TradeOgre & CoinMarketCap; launched a YouTube channel, email list, e-book, and in-person events.

Frontend Developer at Bimdl

December 1, 2022 - February 28, 2023

React, SCSS, Bootstrap; SaaS platform for UK social housing.

Frontend / Full Stack Developer at Webisoft

March 1, 2022 - October 31, 2022

React, Node.js, TypeScript, Next.js, GraphQL; Built NFT marketplace from scratch using React, Node.js and Rust; Web3 arcade app redesign.

Frontend Developer at Webaholics

January 1, 2022 - June 30, 2022

React, Material-UI, TypeScript; UI for warehouse management app.

Full Stack Developer at CodeToo

November 1, 2020 - June 30, 2021

Mongo, Express, React, Node.js (MERN stack) project management app; completed entire business launch and marketing, built it from scratch with a business partner.

Co-Founder / Full Stack Developer at Top Scholar.io

November 1, 2019 - April 30, 2020

MERN stack ed-tech app for English tutors in Europe. Led the entire business launch and marketing, built it from scratch with a business partner.