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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 / hora

Bandeira do(a)

United States (7:11 PM)

Entrou em julho 2, 2025

1 Recomendação

$70 USD / hora

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! 💼

Verificações

No prazo

100%

No orçamento

100%

Índice de aceitação

58%

Portfólio

Portfólio

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5.0 · 10 Avaliações
Avaliações
J

Fitness App & Website Development $6.400 USD

Very professional, does a great job and works quickly.

Jarod J.

@jarod3

Bandeira do(a)

Royal Oak, United States

há 6 dias

Compartilhar

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

Bandeira do(a)

Wesley Chapel, United States

há 17 dias

Compartilhar

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

Bandeira do(a)

Porto, Portugal

há 2 meses

Compartilhar

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

Bandeira do(a)

Lone Tree, United States

há 3 meses

Compartilhar

S

E-commerce Landing Page Revamps $140 USD

Johnnie did a great job, all went perfect!

Pierre R.

@sporttema

Bandeira do(a)

Karlshamn, Sweden

há 3 meses

Compartilhar

Experiência

React, Gatsby, Tailwind CSS Development

ago., 2023 - abr., 2025

1 ano, 7 meses

GrowSF

ago., 2023 - abr., 2025

1 ano, 7 meses

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

Bandeira do(a)

San Francisco, United States

ago., 2023 - abr., 2025

1 ano, 7 meses

Frontend Engineer- Next + Tailwind

mar., 2021 - fev., 2023

1 ano, 11 meses

Zego | Insurance You Control | Telematics

mar., 2021 - fev., 2023

1 ano, 11 meses

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. ...

Bandeira do(a)

London, United Kingdom

mar., 2021 - fev., 2023

1 ano, 11 meses

React/Next.js and Node.js fullstack development

mar., 2018 - jul., 2020

2 anos, 4 meses

Bravae

mar., 2018 - jul., 2020

2 anos, 4 meses

-https://www.bravae.com/

Bandeira do(a)

Barcelona, Spain

mar., 2018 - jul., 2020

2 anos, 4 meses

Educação

Cornell Law School

2025 - 2025

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

Bandeira do(a)

United States

2025 - 2025

University of Maryland College Park

2024 - 2025

1 ano

B.S. in Applied Technology

Bandeira do(a)

United States

2024 - 2025

1 ano

Certificações

P

Preferred Freelancer Program SLA

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