Ryan Calvin C.

Missouri, United States
7 years
Full-time (40 hrs/week)

Ryan Calvin is now available for hire Hire Ryan Calvin

I work with smart contract and core engine using Rust, Solidity, Golang, JavaScript and C++. I also have experience in IPFS, web3, meta-transaction, network-agnostic transactions. graph protocol, Coinbase, solidity, oracles, L2 bridge & scaling solutions, advanced web3, JSON RPC, smart-contract auditing(informal) & gas optimization, node management & DevOps, applied cryptography etc. I can help with anything on Solana & Ethereum side as well as on backend web2 side.

Skills and experiences

Rust2 years
Web3.js3 years
Solidity4 years
Blockchain4 years
Ruby on Rails3 years
Node.js3 years
PHP5 years
React.js5 years
Ethereum2 years
Node.js3 years
Laravel5 years
Python4 years
Go3 years
AngularJS2 years
AWS5 years

Skills and experiences

Freelance

08/2021 - present

-Build VERA token on Solana using Rust, Anchor and Pyth network -Build web application for VERA implementing the DeFi functionality. -Make NFT Gaming platform which is working on Ethereum and Polygon network. -Implement the gaming logic by Solidity and use React and Ether.js for frontend.

DeFi Developer

ElephantsLab 12/2019 - 07/2021

- Blockchain programming and smart contract development using: Solidity, Truffle, OpenZeppelin, Remix, Mocha, Chai, Ganache. - Reviewed and validated back-end and front-end codes written by other team members as a lead full-stack developer. - Creating Web applications using: React, Vue 2, Web3.js, ethers.js. - Developing REST API using: Golang, Laravel, MySQL. - Working with main DeFi protocols: Uniswap (forked and developed products on V1 & V2), PancakeSwap, QuickSwap, JustSwap. - Worked with these blockchains: Ethereum, BSC, Tron, Polygon (matic).

Blockchain Developer

Cyberlands 07/2017 - 11/2019

- Applied for three patents related to blockchain efficiency and security. - Implemented Staking Liquidity Pool. - Developed a full-features backend for testing the functionality of smart contracts.

Backend Engineering Intern

Clarifai 04/2015 - 05/2017

- Created new endpoints for both customer and internal facing APIs. APIs were used to significantly improve the internal ML model’s deployment process. - Integrated company’s entire stack with AWS Marketplace and made major changes to company’s billing process to comply with AWS’s standards