About

Learn more about me

Certified Full Stack Developer

  • Degree: Bachelor of Science
  • Email: thecrazydev524@gmail.com
  • Freelance: Available
  • Open to: Remote position

Enthusiasm and creative thinking Full Stack Engineer with having strong problem solving skills and ability to work in fast paced environment. I have 8+ years of experience in web development and worked at large level enterprise & startup companies. Many business logics for Blockchain, Healthcare, E-commerce, Fintech, SaaS, User Dashboard and LMS are already in my skillset and experience

Happy Clients

Projects

Hours Of Support

Year

Skills

HTML 100%
CSS 90%
JAVASCRIPT 95%
TYPESCRIPT 90%
PHP / Laravel90%
REACT 95%
VUE 90%
ANGULAR 85%
PYTHON 85%
Solidity / Hardhat 100%

Testimonials

Do you have any Solidity task to be done perfectly? If YES, just Hire Jonathan. He is the best Senior Solidity Developer with comprehensive knowledge. Highly recommend!!!

Saul Goodman

Great job as always, always thorough, goes back and makes changes if required, good work ethic.

Samuel Mayr

I am extremely impressed with the work that Jonathan has done on my NFT Marketplace website. He was very professional and communicated clearly throughout the optimization process.

Mican Desancic

Jonathan was very professional and had great communication. He completed the work quickly as promised, and he did a great job! Highly recommend.

David Fellner

He did a fantastic job. He works very fast, and he knows his job. I recommend it with confidence. I will definitely use his services again.

John Larson

Resume

Check My Resume

Sumary

Jonathan Brown

Enthusiasm and creative thinking Full Stack Engineer with having strong problem solving skills and ability to work in fast paced environment. I have 8+ years of experience in web development and worked at large level enterprise & startup companies. Many business logics for Blockchain, Healthcare, E-commerce, Fintech, SaaS, User Dashboard and LMS are already in my skillset and experience.

Education

Bachelor of Computer Science

2010 - 2014

Singapore Institute of Technology

Certifications

Certified React Developer

Issued at Feb 2021

From HackerRank

Solidity / Web3 Developer

Issued at Oct 2018

From Udemy

PHP / Laravel Certificate

Issued at Dec 2020

From Mantas

Strength

Persistence

Once I believe in an idea or project I don't give up until I explore all options

TimeManagement

I like to analyse data,find a simple direction and goal, make a plan of actions in order tofit in a deadline, and execute it

Professional Experience

Freelance

December 2022 - Present

Singapore

  • API development for getting live price data and market status using Node.js Next.js.
  • Various live charts using rechart, lightcharts for data visualization.
  • React/Javascript/Typescript Styled Component practice and mobile wallet support.
  • Unit test using Jest/Mocha/Sinon for web3 integration modules.
  • Created custom assets and smart contracts using Aptos Move.
  • Expanded blockchain experience to Sui, Aptos, ZkSync Era.

Lead Full Stack Engineer

January 2021 - November 2022

California US - Remote

  • Launched HiFi DeFi token IDO
  • Core development for gaming factory smart contract using solidity hardhat framework
  • Core contribution for Metaverse logistic and tokenomics
  • Developed hifisdk npm package using react and tailwind css to serve games as a service.
  • React/Next js/Javascript/TS gaming platform with web3 integration
  • Node/MongoDB/TS RESTful API for gaming platform backend endpoints
  • AWS EC2, S3, RDS DevOps management

Senior Full Stack Engineer

April 2018 - January 2021

San Francisco, California, United States - Hybrid

  • Built prototypes using HTML, CSS, JavaScript
  • Followed Figma/Sketch design for pixel perfect purpose
  • Initialized chat communication using Svelte/Electron, socket.io and WebRTC
  • Built a SAAS application using React, Tailwind CSS
  • Wrote RESTful API endpoints using Node/Express/Python/Django/MongoDB
  • Converted angular 1.8 social map applications to React 16.8 with Material UI,highcharts, recharts

Frontend React Developer

ANovember 2014 - February 2018

Singapore - On-site

  • Built prototypes using HTML, CSS, JavaScript
  • Converted HTML/CSS to Next.js template
  • Followed Figma/Sketch design for pixel perfect purpose
  • Built 10+ React + tailwind css applications related with booking, e-learning,user dashboard, fintech as well as React Native & Electron for mobile &desktop apps
  • Used Redux thunk, Redux Saga to manage states in React
  • Rewrote class based architect to functional component based
  • Migrated Redux to Hooks+Context API for optimization purpose
  • Migrated React CSR to Next.js SSR for SEO
  • Customized MUI, Bootstrap and AntD to match pixel perfect UI/UX designs

Portfolio

My Works

BRC20 INSIDER

next.js + webpack

Moonstar

React + Node.js + Firebase

Winpulse

Laravel framework

In Action

Angular + node.js

Frank

Shopify

Golden gate

Next.js + Node.js

Contact

Contact Me

Email Me

thecrazydev524@gmail.com

Call Me

+1 253 256 1235

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