Ihor Semenchenko
Senior Full Stack Developer
E - -q https://github.com/topdev107 e Puliuia str, Lviv, Ukraine
SUMMARY
SKILLS
Passionate Software Engineer with 10+ years of experience in developing web applications
and backend systems. Recent 5 years I focused on working with blockchain. Skilled at writing
clear, concise code that is easy to maintain and troubleshoot. Experienced in working with
both small and large teams across multiple projects and companies. Able to work
independently of remote locations or in office environments as needed by the company.
Web Skills
Node.js, Express.js, React.js,
MongoDB, Nest.js, Next.js,
Laravel, Mysql, PostgreSql,Scss,
Sass
Backend Frontend
PROFESSIONAL EXPERIENCE
Blockchain Developer
Flash Technology
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CodeGeeks Solutions
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Wayfair
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02/2010 - 01/2013
L'viv, Ukraine
Target
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L'viv, Ukraine
Moved the automation solution into a commercial software ($60k/year)
Designed and developed reusable software components which used in 3 different project
with reducing development effort by 50%
Re-engineered critical modules within a sprint to rely on a centralized library to optimize
performance by 68%
Rated with the best annual performance rating for all the years during my stint; given to
top ~5% employees
Software Developer
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03/2013 - 06/2018
Developed 16 social media websites (back-end and front-end) using node/express, nestjs,
reactjs, laravel, Sass, HTML, mongodb, Mysql, PostgreSql etc
Enhanced a customer's website content ranking algorithm and front-end features, which
increased user base and retention by 79%
Collaborated with 12 development teams to refractor an open source Python Script and
web scrape Growthsi Images.
Improved the UI/UX of 23 clients' websites via responsive front-end using JavaScript,
HTML, and CSS.
Senior Software Engineer
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remote
Developed 7 decentralized web applications using Solidity, React, CSS, Bootstrap, and
web3.js/Ether.js for integrating Ethereum, Binance Smart Chain
Reduced costs by 40% using an Ethereum smart contract to automate supply chain
management processes.
Built a private blockchain using Hyperledger Fabric 1.0 that enhanced data security and
reduced risk exposure by 93%.
Created and launched 3 decentralized applications based on RW’s $150M daily
transaction using Ethereum’s smart contracts
Full Stack Developer
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10/2018 - Present
10/2008 - 11/2009
L'viv, Ukraine
Helped to increase the accuracy of the reporting systems by 4%
Delivered configuration management tools to track server settings for performance
testing which saved 25% of initial machine setup
Developed monitor reports that are using in-memory cache, updating the data shown to
the user every 1 second
Optimized customer resources and reduce turnaround time by 20%
Performed root cause analysis for more than 10 issues to identify bugs and rolled out fixes
to production within 24 hours
EDUCATION
Bachelor of Science in Software Engineering, Minor in
Computer Science
2003 - 2008
Ivan Franko National University
Kyiv, Ukraine
Blockchain Skills
Smart contracts, Solidity, Rust,
Web3.js, Ether.js, Truffle, Hardhat
DeFi Dex Token Bot Trading
Operating Systems
Unix
Solaris Linux
Windows
STRENGTHS
Gold Medalist
Was awarded a gold medal for 5
years of consecutive excellence in
academics
Social
t Corporate
Responsibility
Volunteered in the CSR team for
Amadeus, organized tuition
platforms for the underprivileged.
Designed confluence page for book
drives, etc.
LANGUAGES
Ukrainian
English
Native
Advanced
