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Johnnie R.

@johnnier3

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5,0
10

6,5

6,5

100%

Full-Stack | React | Mobile | C# | Blockchain

$70 USD / Heure

Drapeau de

United States (3:41 PM)

Inscrit depuis le juillet 2, 2025

1 Recommandation

$70 USD / Heure

Hi, I'm Johnnie Reece, a Preferred Freelancer and senior full-stack, mobile & emerging tech expert with 10+ years delivering enterprise-grade, high-performance solutions for startups and Fortune 500 companies. 🚀 Core expertise and current tech stack: → Frontend & Web 🌐: React, Next.js (App Router, Server Actions), Angular, TypeScript, Tailwind CSS, Redux Toolkit, React Query, Zustand, shadcn/ui → Mobile 📱: React Native, Flutter, Expo, Firebase — cross-platform iOS/Android apps with native feel; Java (native Android development, legacy support & integrations) → Backend & APIs ⚙️: Node.js (NestJS, Express), Java (Spring Boot, Hibernate, Jakarta EE), C# .NET 8/9, ASP.NET Core, EF Core, SignalR, gRPC; Python (FastAPI, Django, Flask) → CMS & E-commerce 🛒: Shopify (themes, apps, Liquid, API integrations, headless/Headless Commerce), WordPress, WooCommerce, Elementor — custom themes/plugins, secure & optimized sites → Blockchain⛓️: Solidity, Ethereum, Smart Contracts, Web3.js, Ethers.js, Hardhat — dApps, NFTs, DeFi → Automation 🤖: Python (Selenium, Scrapy), RPA, Zapier/n8n/[login to view URL], custom bots & AI tools → Cloud & DevOps ☁️: AWS (Lambda, ECS/Fargate, RDS, S3, Cognito, CDK), Docker, Terraform, GitHub Actions, CI/CD What I deliver – every project: ✅ Pixel-perfect, responsive web & mobile apps (98–100 Lighthouse scores) ✅ Native-feeling cross-platform mobile solutions (React Native + Flutter) + native Android with Java ✅ Secure, scalable backends (Node.js/NestJS, Java/Spring Boot, .NET/Python) with real-time features, OAuth2, PCI compliance, microservices & enterprise integrations ✅ High-performance Shopify stores (custom themes, private/public apps, Liquid development, API integrations, headless setups) + WordPress/WooCommerce sites & custom plugins ✅ Blockchain dApps, smart contracts & Web3 integrations ✅ Automation bots, scraping, workflows & cost-saving optimizations ✅ Full-cycle development: analysis → architecture → MVP → deployment → support ✅ Smooth legacy migrations to modern stacks (React/Next + mobile + Node.js/Java/.NET/Python + AWS) ✅ Auto-scaling, cost-optimized infrastructure with 99.99%+ uptime My approach: I act as your technical partner — daily updates with live demos, direct access (no middlemen), proactive advice on architecture, performance, security & costs. Code is clean, documented, and built for long-term maintainability & easy handoff. Clients return because I deliver faster, cleaner, more reliably — with zero surprises and maximum value. Ready to launch your project with a verified Preferred Freelancer skilled in web, mobile, Shopify, WordPress, blockchain, automation, cloud & full-stack Node.js/NestJS development? Message me now! I reply fast and can start immediately. Let's create something exceptional! 💼

Vérifications

Dans les temps

100 %

Dans le budget

100 %

Taux d'acceptation

58 %

Portfolio

Portfolio

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5.0 · 10 Avis
Commentaires
J

Fitness App & Website Development $6 400 USD

Very professional, does a great job and works quickly.

Jarod J.

@jarod3

Drapeau de

Royal Oak, United States

il y a 7 jours

Partager

A

Azure Backend to Next.js Migration $2 000 USD

He worked quickly and efficiently! Appreciated his work on migrating a complex .NET framework and Azure database to a more lightweight Next.js/Supabase combo.

Addison R.

@addisonr0

Drapeau de

Wesley Chapel, United States

il y a 18 jours

Partager

C

Implement Backend for PWA "RISE." €700 EUR

I had a fantastic experience working with this freelancer. He is an excellent communicator, very patient, and quickly understood exactly what needed to be done. The delivery was fast and flawless. Throughout the project, he was always available, responsible, and open to small changes/adjustments without any issues. A true professional who is easy to work with. I highly recommend him and look forward to our next collaboration.

Tomás C.

@Caethanos10

Drapeau de

Porto, Portugal

il y a 2 mois

Partager

H

Senior React/TypeScript Engineer to Split Monolith into Monorepo + Optimize Vercel Builds (SeniorCRE Platform) $5 500 USD

Great communication. A pleasure to work with.

John H.

@hauber

Drapeau de

Lone Tree, United States

il y a 3 mois

Partager

S

E-commerce Landing Page Revamps $140 USD

Johnnie did a great job, all went perfect!

Pierre R.

@sporttema

Drapeau de

Karlshamn, Sweden

il y a 3 mois

Partager

Expérience

React, Gatsby, Tailwind CSS Development

août, 2023 - avr., 2025

1 an, 7 mois

GrowSF

août, 2023 - avr., 2025

1 an, 7 mois

Worked as a Frontend developer to implement new features, fix bugs and maintain the website using latest technologies including React, Tailwind CSS, etc.

Drapeau de

San Francisco, United States

août, 2023 - avr., 2025

1 an, 7 mois

Frontend Engineer- Next + Tailwind

mars, 2021 - févr., 2023

1 an, 11 mois

Zego | Insurance You Control | Telematics

mars, 2021 - févr., 2023

1 an, 11 mois

Key Responsibilities - UI/UX implementation: Translated Figma designs into pixel-perfect and responsive user interfaces that align with Zego’s brand and user experience standards. - Optimize performance: Implemented web performance optimization techniques, such as server-side rendering, static site generation, lazy loading, and asset bundling, to ensure fast load times and smooth user interactions. ...

Drapeau de

London, United Kingdom

mars, 2021 - févr., 2023

1 an, 11 mois

React/Next.js and Node.js fullstack development

mars, 2018 - juil., 2020

2 ans, 4 mois

Bravae

mars, 2018 - juil., 2020

2 ans, 4 mois

-https://www.bravae.com/

Drapeau de

Barcelona, Spain

mars, 2018 - juil., 2020

2 ans, 4 mois

Formation

Cornell Law School

2025 - 2025

Master of Science in Legal Studies with a concentration in Tech Law

Drapeau de

United States

2025 - 2025

University of Maryland College Park

2024 - 2025

1 an

B.S. in Applied Technology

Drapeau de

United States

2024 - 2025

1 an

Certifications

P

Preferred Freelancer Program SLA

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