Freelancer logo How It Works Browse Jobs Log In Sign Up Post a Project Profile cover photoundefined
You're now following .
Error following user.
This user does not allow users to follow them.
You are already following this user.
Your membership plan only allows 0 follows. Upgrade here.
Successfully unfollowed user.
Error unfollowing user.
You have successfully recommended
Error recommending user.
Email successfully verified.
User Avatar
$35 USD / hour
Flag of KAZAKHSTAN
rudnyy, kazakhstan
$35 USD / hour
It's currently 7:17 PM here
Joined January 18, 2022
0 Recommendations

Alexandra P.

@Potashova1

monthly-level-three.svg
5.0 (2 reviews)
3.9
3.9
$35 USD / hour
Flag of KAZAKHSTAN
rudnyy, kazakhstan
$35 USD / hour
100%
Jobs Completed
100%
On Budget
100%
On Time
33%
Repeat Hire Rate

Blockchain && Fullstack && Software talent

Starting from middle of 2018 began proactively working on blockchain related projects as a Blockchain Software Architect. My experiences range from creating both Front-end Blockchain applications to Backend Architecture design and implementation, Smart Contract Development, Unity3D Game Development, NFT, testing, auditing and development for Fintech and other industries that need the power of decentralization, tokenization, and smart contracts. Expertise in Public Blockchain Platforms: Ethereum | Solana | Binance Smart Chain ✓ Developing smart contracts by Solidity and Rust programming languages. ✓ Developing RPC using client libraries such as Web3.js. ✓ Static analysis of smart contracts for gas consumption and optimization using Remix IDE. ✓ Securing smart contracts using libraries like OpenZeppelin. ✓ Developing Ethereum dApps using Truffle framework. ✓ Integration with crypto wallets such as Metamask & Phantom. ✓ Deploying smart contracts on test networks such as ropsten/rinkeby as well as ethereum/solana mainnet. Expertise in Private & Consortium Blockchain Platforms Hyperledger Fabric ✓ Developing Chaincode using the Go programming language. ✓ Developing proof of concepts using Hyperledger Composer. ✓ Integration with Fabric Java SDK. ✓ Creating RESTful APIs for client applications to communicate with the blockchain network. ✓ Creating channels, orderers, and peers. ✓ Deployment and instantiation of Chaincode on channels on cloud services like IBM Bluemix and Amazon AWS. I hold expertise with: - Software Architecture / Software Engineering / Software Testing - Solidity / Rust / Golang - React / ExpressJS / Vue.js / Next.js / Angular.js - Unity3D Game Development / Virtual Reality / Augmented Reality - MongoDB / MySQL / PostgreSQL / MSSQL - Laravel / PHP / WordPress / Magento - Heroku / VPS / Amazon Web Services (AWS) / Digital Ocean - Github, Gitlab, Bitbucket, Trello, Backlog, etc. Here are the applications that I've built so far. - Dapp, DeFi development - NFT game/marketplace development on Ethereum & Solana blockchains in Solidity & Rust - Unity3D NFT Game - Ethereum & Binance Smart Chain token development on ERC20, ERC721, ERC1155, BEP20, BEP721 & BEP1155 protocols - ICO / ITO / IDO / STO, Cryptocurrency exchange & Cryptocurrency wallet Development Further Expertise & Work Deliverables in Blockchain: ✓ DApp for Supply Chain Management for Food Industry ✓ DApp implementation in Philanthropy ✓ DApp for Anti-Counterfeiting in the Pharmaceutical Industry ✓ Worked on Protocols like Ethereum, IBM Hyperledger, Stellar ✓ SetUp of a Permission-based Consortium Network ✓ Implementation of Private, Public and Permission-based network Thanks for your kind attention.
Freelancer Javascript Developers Kazakhstan

Contact Alexandra P. about your job

Log in to discuss any details over chat.

Portfolio Items

Frontend
Frontend
Frontend
Frontend
Frontend
Frontend
NFT marketplace
NFT marketplace
NFT marketplace
NFT marketplace
NFT marketplace
NFT marketplace
Great and Perfect works
Staking blockchain app
Great and Perfect works
Staking blockchain app
Great and Perfect works
Staking blockchain app
Great and Perfect works
Staking blockchain app
casino
casino
casino
casino
casino
casino
casino
casino
casino
casino
Blokchcian
Blockchain
Blokchcian
Blockchain
Blockchain
Blockchain
Blockchain
Blockchain
Blockchain
Blockchain
Blockchain
Blockchain
Blockchain
Blockchain

Reviews

Changes saved
Showing 1 - 2 out of 2 reviews
Filter reviews by: 5.0
$250.00 USD
Alexandra is expert in blockchain and smartcontract field. I want to work with him alwasy. Thanks
User Avatar
Flag of Petar M. @PPM21
4 months ago
5.0
$600.00 USD
Alexandra is Perfect and Good Expert in Blokchain field. He was great, very professional, delivered on time, made the changes needed, delivered great work and He was did not insisted on taking the money before result was perfect(this is something most freelancers don't do. Overall He was an awesome freelancer that I highly recommend and I will hire again multiple times.
User Avatar
Flag of Petar M. @PPM21
5 months ago

Contact Alexandra P. about your job

Log in to discuss any details over chat.

Verifications

Preferred Freelancer
Identity Verified
Payment Verified
Phone Verified
Email Verified
Facebook Connected

Top Skills

JavaScript 2 Node.js 2 Blockchain 2 Smart Contracts 1 PHP

Browse Similar Freelancers

Javascript Developers in Kazakhstan
Javascript Developers
node.js Developers
Blockchain Developers

Browse Similar Showcases

JavaScript
Node.js
Blockchain
Smart Contracts
Previous User
Next User
Invite sent successfully!
Registered Users Total Jobs Posted
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2022 Freelancer Technology Pty Limited (ACN 142 189 759)
There is no internet connection
Loading preview