JS

John Simard

available

Last update: 21.12.2022

Senior Full-Stack Developer, React FrontEnd Developer

Graduation: Computer Science
Hourly-/Daily rates: show
Languages: English (Limited professional)

Keywords

ReactJS HTML Java (Programming Language) JavaScript (Programming Language) Geographic Information Systems Application Programming Interfaces (APIs) C++ (Programming Language) Cascading Style Sheets (CSS) Cluster Analysis Encodings + 21 more keywords

Attachments

John-Simard_211222.pdf

Skills

APIs, back-end, Blockchain, C++, CSS, clustering algorithm, data structures, encoding, Ethereum, Gecko, location data, HTML, Computer Science, Java, JavaScript, Next.js, Node.js, Objective-C, Programming Languages , Python, React.js, React, Ruby on Rails, Rust, software engineering, Solidity, Swift, Sass, TypeScript, Vue, web development, Web3.js

Project history

05/2021 - 10/2022
Lead Blockchain Developer
New York; SparxIT

* Devised an Ethereum smart contract and website that allowed over 3.9K developers to sell software
licenses using 17 embeddable widgets.
* Designed a wide modular trading engine to auto-rebalance RW's $45M portfolio utilizing private and
public market makers on the Ethereum network.
* Conceptualized software licenses on the blockchain to discourage piracy by enabling a secondary peerto-peer
marketplace, which allowed 8.6K developers to accept cryptocurrencies.
* Improved gas savings from token transfers by 85% using encoding design inspired by the Dexlabs
Protocol on Solana Blockchain.
* Planned smart contract and managed whole development for NFT marketplaces on Solana using Rust.

09/2019 - 05/2021
Senior Full-Stack Developer
Roobinium

* Increased the 180-character display name limit in a popular app, which impacted 2M users in three
days.
* Created code to enable 15 keyboard shortcuts for two mobile apps using Objective-C and Swift.
* Designed and developed 30+ front-end and back-end applications utilizing React.js, Node.js, and
TypeScript
* Reduced the time to diagnose customers server issues from 72 hours to 45 minutes, slashing $200K
yearly in support costs.

10/2017 - 07/2019
React FrontEnd Developer
Gecko Dynamics

* Redesigned Growthsi homepage using HTML, CSS, and JavaScript; the site records 10M weekly views.
* Overhauled the company's checkout page, which processes $20M daily revenue, by upgrading its
payment code.
* Developed an altered clustering algorithm capable of loading and generating 10B observable location
data points.
* Engineered a client's items comparison page using React.js, CSS, and HTML for the launch of 27 newly
released products.

Certifications

Certified Smart Contract Developer
Blockchain Council
2022

Local Availability

Only available in these countries: Canada
Profileimage by John Simard Senior Full-Stack Developer, React FrontEnd Developer from Ottawa Senior Full-Stack Developer, React FrontEnd Developer
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