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$40 USD / hour
Flag of UKRAINE
varvarivka, ukraine
$40 USD / hour
It's currently 2:23 AM here
Joined October 6, 2021
1 Recommendation

Valentyn P.

@pivendev

monthly-level-four.svg
5.0 (5 reviews)
3.6
3.6
40%
40%
$40 USD / hour
Flag of UKRAINE
varvarivka, ukraine
$40 USD / hour
60%
Jobs Completed
65%
On Budget
65%
On Time
N/A
Repeat Hire Rate

Blockchain and React Expert!

*I will always put the client's determination into good practice.* I am senior blockchain developer. I have 4+ years experience to develop blockchain dapps. And I am very familiar with Hardhat. So I can support Hardhat test script about my working result. - I have developed various kinds of token contracts such as auto rebase token, Reflection token and so on.(support Airdrop) [login to view URL] - And I have forked PancakeSwap and developed DeFi sites. [login to view URL] [login to view URL] -Recently, I think, Olympus DAO is very famous. I forked and launched Olympus DAO several times. [login to view URL] [login to view URL] -Also, I am very familiar with NFT, too. I developed NFT Minting and staking sites. Specially, I developed several NFT breeding games that include NFT minting, NFT staking and market places. Those are live NFT eco-systems. [login to view URL] [login to view URL] -I can clone deployed contract without losing saved holder's info and make it proxy contract for updating in future. (The Graph is necessary.) I guarantee 100% that I can fully satisfy the needs of client's with my skill and experience. My specializations: o Issuing Crypto Token contract(ERC-20, TRC-20, BEP-20 and etc.) o DeFi & Dex sites o NFT Contract o NFT Mint website o NFT Staking website o NFT Marketplace o NFT Game o Solidity, web3.js, Hardhat, React

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Portfolio

9483369
9780340
9483379
9750110
9675934
9483369
9780340
9483379
9750110
9675934

Reviews

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Showing 1 - 5 out of 5 reviews
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5.0
$16.00 USD
All work good, The project it's perfect
React.js
RESTful API
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Flag of Asaf O.
@PyThonicpro
1 month ago
5.0
$120.00 USD
Great work by Valentyn. He took his time to understand the idea of the website and was asking questions to make sure it was made the right way, thank you.
PHP
JavaScript
MySQL
HTML
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Flag of Chris Oestergaard N.
@polepositionme
1 month ago
2.2
$20.00 USD
I had to explain him several times what the issue is and he was still not able to understand it. Every time he would come back to me with a new contract telling me that the issue was solved but it wasn't. He did released the escrow payment after I told him I can't waste more time explaining so I appreciated that. I wouldn't hire him for complex solidity jobs, not because he is not a good developer (I wasn't able to find if he is) but because he wasn't able to understand the project needs.
Ethereum
Solidity
Smart Contracts
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Flag of Mihai O.
@mihaio
2 years ago
5.0
$224.50 USD
Good Experience! Make me happy please
Ethereum
Non-fungible Tokens (NFT)
G
Flag of Galih W.
@galwicakso
2 years ago
5.0
$300.00 USD
Valentyn is professional in his work and communication. He worked very quickly to complete the project and there were no revisions needed. He finished on time, on budget and was very personable. I would recommend him to anyone looking for an expert in NFT Smart Contracts.
Ethereum
Non-fungible Tokens (NFT)
Solidity
Smart Contracts
Binance Smart Chain
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Flag of Terry T.
@terrytelford
3 years ago

Experience

Blockchain Developer

INFOPULSE
Jul 2011 - Dec 2018 (7 years, 5 months)
I worked as backend developer. It was good experience to work as senior blockchain freelancer.

Education

Bachelor of computer science

Ukrainian Academy of Banking, Sumy, Ukraine 2004 - 2008
(4 years)

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