Эдуард

Eduard Dryha
Birthday: 21.12.1998 (24 years old)
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LinkedIn: [відкрити контакти](див. вище в блоці «контактна інформація»)
GitHub: https://github.com/edrygka
Driver license: "B" category

Education: higher
2016 KPI, Institute of applied systems analysis, Mathematical methods of system analysis

Summary:
• 6+ years of professional expertise in the Information Technology industry;
• 3+ years in Solidity development(IDOs, FT/NFT, vesting, DAO, staking, treasury);
• Rich experience in back-end development (JavaScript, jQuery, AJAX(fetch), CSS, worked on
Vue.js, HTML and CSS;
• Testing with mocha, chai, jest, selenium.
• Wide experience with JavaScript-related languages (TypeScript);
• Deployments using AWS, DigitalOcean
• Solid experience with server-side development on Node.js(express, koa, Hapi);
• Thorough experience in C/C++/C# programming languages;
• Considerable experience in OLTP database designs (PostgreSQL, MySQL, MongoDB, Dynamo,
Redis, level DB, CouchbaseDB, SQLite) and possible optimizations;
• Solid background in OOP, Design Patterns(Singleton, Observer, Factory, Reactor, Facade, etc.),
UML/DML;
• Experience in the development of REST API for interaction with mobile applications;
• Experienced in designing client-server (mobile-server) architecture and microservice
architecture as well;
• Wide skills in math algorithms (optimization methods, machine learning, linear/non-linear
equation, economics approach as well);
• Good knowledge of API integration (cryptocurrency exchanges and cores, reCaptcha,
nodemailer, etc.).
• Participated in online Kaggle challenges, have experience in Data Science and Machine
Learning(tree decisions, linear regression, cross-validation) https://www.kaggle.com/dryhaa

Experience :

"2022.5-2023.7" «Heatherglade»
https://heatherglade.com
Domain: Fintech
Position: Lead blockchain developer
People number: 10
Summary: There were 2 projects.
1. It is a crypto finance platform that lets users gain profit using stakings of basic tokens and
Uniswap LP tokens. Developed website, solidity smart contracts(DAO, vesting, token, staking,
treasury), subgraph. Our team had 3 developers(including me), 1 project manager, and 1 QA. In
6 months, we delivered the platform's alpha version with staking and DAO and planned to move
on to launchpad and token sale. Unfortunately, the project was frozen to wait out crypto winter.
Since the website is on alpha, I can share the link in DM.
Technologies: NodeJs, TheGraph, Solidity, OpenZeppeling, Uniswap.
2. Heatherglade worked for a while on video games (a mix of Minecraft and Genshin); the idea
was to implement NFT goods inside the game, economic tokenization, and provide more
convenient features. Designed NFT integration inside the game via REST API. Url:
https://altiros.game
Technologies: NodeJs, MongoDB, S3, Cloudwatch logs and metrics, ECS, ECR, VPC, EC2, LB,
CloudFront, API Gateway, Github actions.

Responsibilities:
- Creating application from nothing(no team, no flow) to production,
- High-level meetings on marketing, further development direction,
- Code review,
- Team management,
- DevOps basic setup for stage and prod
- Architecture development (based on business requirements)
- Meetings with the Product Owner

Achievements: The entire EGO DAO project is my achievement. The realization that
technologies should be defined after the business requirements, not before.

"2021.12-2022.4" «Pragma»
https://app.uplift.io
Domain: Fintech
Position: Solidity Engineer
People number: 20-25
Responsibility: Developed pre-sale, IDO, Oracle, and vesting contracts. Worked with uni swap,
chainlink, and open zeppelin. Created Merkle tree solutions. Also had experience in environment
setup. Testnet and prod deployments. Worked with TRON, Ethereum, and BSC and got Aurora
bridge experience. Used hardhat, ts, solhint, eslint, chai.
Achievements: Created price oracle with twap technology

“2019.10-2021.11” «DataArt»
https://dataart.ua
Domain: Entertainment and E-commerce
Position: Strong Middle NodeJs Developer
People number: 20-25 and 60-80
Summary: There were 2 projects.
1. The project was developed to give news and metrics in the cryptocurrency world for traders
and amateurs. Designed jobs to compute averages and metrics periodically. The full project
consists of the front-end part, the server-side API, and a few microservices that get data from
exchanges, calculate metrics, and save in the DB.
Technologies: NodeJs, PostgreSQL, Sequelize, AWS, Lambda, ECS, ECR, RDS, SNS,
CodeBuild, CloudWatch, Jest, Hapi, Redis, Docker.
2. This one is a really high-load project in delivery services worldwide. Package delivery
attendance, tracking packages functionality, return packages service, Christmas hustle with
massive orders for delivery in Europe, work around ~300 repositories. That's all I worked with.
Technologies: NodeJs, Dynamo, S3, Lambdas, ECS, ECR, RDS, SNS, SQS, VPC, EC2, Kibana,
Graphana, Prometheus, Kubernetes.

Responsibilities:
- Development of new microservices using NodeJs,
- Covered microservices with unit/p2p tests
- Deployments for AWS,
- Metric/log checks, bug reveal, bug fix,
- Back-end maintenance,
- Work with SQL migrations,
- Worked as a couch on NodeJs course: did graduations for Junior Developers,
- Code review

Achievements: Huge ~10 steps service migration, to optimize package processing.

"2017.12- 2019.08" Company «AXEL»
https://go.axel.network/
Domain: E-commerce
Position: Blockchain Developer (NodeJs & solidity)
People number: 15-30
Responsibilities:
- REST API providing(express)
- Microservice architecture development
- code refactoring
- unit tests, behavior tests, API tests
- es6 code style
- providing documentation
Achievements: created a simple blockchain web wallet prototype with the ability to send tx,
create key pairs, development of CLI wallet software for the new cryptocurrency, primary
double spend protecti(language: nodeJS, database: level DB), airdrop contract development and
refactoring

"2018.05 – 2019.02" Freelance
Position: Smart Contract Developer(Solidity)
People number: 5-10
Responsibility: ERC-20, ERC-721, truffle, Ethereum, ICO-sale, pre-sale smart contracts

"2018.06 – 2018.08" Open Packaging Network
Domain: Fintech
People number: 10
Position: Smart Contract Developer(Solidity)
Responsibility: Development of Pre-Sale, ICO smart contracts, audit, smart contract review
"2017.07 – 2017.10" Startup «Neuroseed»
http://neuroseed.io
Domain: E-commerce
Position: Back End Developer, Blockchain Developer (NodeJs + Ethereum)
People number: 10-15
Responsibility: Develop consensus protocol, back-end private cabinet
Achievements: a consensus algorithm for conclusions of the opening database in write mode,
building a decentralized system with the ability to sync with each other

"2017.03 – 2017.08" Company «Wolfchange»
http://wolfchange.com
Domain: E-commerce
Position: Back End Developer(NodeJs)
People number: 7
Responsibility: design of web application architecture, back-end development
Achievements: creating project prototype, development of cryptocurrency exchange API

"2016.08 – 2016.11" Startup «Ideaschecker» (Chat bot searching for the
unique idea) http://ideaschecker.com
Position: CEO
People number: 5
Responsibility: Working with MySQL, writing bot logic
Achievements: First place in 56 startup battles. It is my interview in "startup.network”
https://startup.ua/news/ukrainskie-studenty-sozdali-bota.html