Oleg

Oleg Gamega
[открыть контакты](см. выше в блоке «контактная информация») | @GamegaOleg | https://github.com/gadfil

SUMMARY
Skilled Fullstack Developer with 12+ years of experience in backend, Web3, mobile and frontend
development. Proficient in designing and implementing scalable applications, integrating blockchain
solutions, and optimizing system performance. Expertise spans across smart contract development,
backend API design, database management, and mobile app development. Strong problem-solving
skills, a passion for innovation, and a track record of delivering high-quality software solutions.

SKILLS
●​ Backend languages: JavaScript, TypeScript, SQL, Golang;
●​ Backend frameworks: ExpressJs, NestJs, Fiber, ApolloServer, gRPC;
●​ Mobile languages: Java, Kotlin, TypeScript, Dart;
●​ Frontend languages: JavaScript, Typescript, HTML, CSS;
●​ Frontend libs: React.js, Redux, Zustand, Mobx, Apollo, Ether.js, Web3.js;
●​ Database: MySQL, PostgreSql, MongoDB, Redis;
●​ Jobs/Queue/Messaging: RabbitMQ, Kafka;
●​ Version control: Git;
●​ Containers: Docker;
●​ Blockchain: Solidity, web3.js, ether.js, go-ethereum, hardhat;

PROFESSIONAL EXPERIENCE
Sep 2023 – Now,
Full-stack Software Engineer, Xraice,
Developing a Telegram application with custom blockchain integration and a DEX.
Building a mobile application and backend for a Web3 wallet, along with a transaction notification
system.
Designing and optimizing algorithms for real-time data analysis and trade execution.
Used stack:
●​ Backend:
○​ NodeJs(Typescript/NestJs)
○​ Golang ( Fiber )
○​ Ether.js
○​ PostgreSQL, Redis
○​ REST API
 ○​ gRPC
●​ Frontend:
○​ React
○​ Ether.js

May 2023 – Sep 2023,
Marketplace Launchpad contract
Conducting research and development for a marketplace launchpad similar to PinkSale.
Used stack:
●​ Solidity
●​ Mocha
●​ HardHat
●​ Node
●​ Ether.js
●​ Mongo
●​ Docker
●​ Swagger

Sep 2022 – May 2023,
ZkSync Web3 Wallet xRase
Developing mobile and web Web3 wallets with support for account abstraction
Building a system monitoring and push notification for user's transactions
Creating a telegram bot

Used stack:
●​ Node
●​ React/React Native
●​ Mongo
●​ Redis
Nov 2021 – Aug 2022,
10props
Developed a centralized NFT marketplace using NestJS for the backend and Next.js for the frontend.
Set up AWS EC2 instances for scalable hosting and managed a PostgreSQL database. Created
RESTful APIs with Swagger (OpenAPI) documentation. Utilized TypeORM for data management and
collaborated closely with design teams to create an engaging user interface. Integrated payment
gateways, optimized performance, and resolved issues to ensure a high-quality application.
Additionally, developed a crypto payment gateway using Golang.

●​ Nest
●​ TypeOrm
●​ Created components and pages
●​ Developed and integrated payment gateways (ETH and ERC-20)
●​ Integrated REST APIs
●​ Implemented Web3 integration for smart contract methods and wallet connectivity
 ●​ Developed and integrated a crypto payment gateway

Used stack:
●​ Node (Nest )
●​ Golang
●​ Postgresql
●​ AWS
●​ Swagger
●​ Docker

Apr 2020 – Sep 2021,
Crypto Exchange contract

Centralized crypto exchange with ticket system.
Used stack:
●​ React
●​ TypeScript
●​ Redux
●​ Nest
●​ Postgresql
●​ Ether.js

Dec 2019– Feb 2020,
Esstories contract
https://edstories.app/en

A tool designed to assist teachers in creating stories and educational content
Used stack:
●​ React
●​ TypeScript
●​ Redux

Aug 2018– Dec 2019,
AESbill Invoice Maker

AESbill Invoice Maker is a user-friendly app for creating and sending invoices. It helps track financial
transactions, billing, and payments. I led the team, acting as the main contact during meetings,
assigning tasks to mobile and backend developers, overseeing code reviews, and enhancing our
development capabilities through software packages.
Used stack:
●​ Node
●​ TypeScript
●​ Postgresql
●​ Rabbitmq
●​ Flatter
 ●​ Firebase
●​ Build Runner

Dec 2017– May 2018,
Lagoon
A social network like Instagram. Good exp. with making a social network. Here I worked with stories
(make, watch etc.), posts, comments, direct messages. Create backend application and API
Used stack:
●​ Node
●​ TypeScript
●​ Postgresql
●​ Flatter
●​ Firebase
Sep 2017 – Dec 2017,
Momentum
https://play.google.com/store/apps/details?id=gamega.momentum.app&hl=ru&gl=US
https://apps.apple.com/ru/app/momentum/id1390574095

Momentum is a service that allows drivers working with Uber, Yandex Taxi, and Sitimobile to receive
money immediately after completing an order.

Used stack:
●​ Java
●​ React Native
●​ TypeScript
●​ Firebase
●​ Google Map

Jan 2017– Aug 2017,
Chat Story
Delivery Application
Used stack:
●​ Node
●​ TypeScript
●​ Postgresql
●​ React
●​ Redux
●​ Redis
●​ Firebase

Sep 2016– Nov 2016,
CNVS
https://cnvs.online/
Web application for building Lean Canvas, Business Canvas and Features Canvas

Used stack:
●​ Node
●​ TypeScript
●​ React
 ●​ Redux
●​ Redis
●​ Firebase

Sep 2015 – Dec 2016,
Parking
Developed backend, API, and mobile application
Integrated custom hardware for monitoring and managing parking spaces.
Implemented payment gateway integration to ensure secure and convenient online payments.

Used stack:
●​ Node
●​ Java
●​ TypeScript
●​ React
●​ Postgresql

May 2013 – Aug 2015,
Yesman
https://play.google.com/store/apps/details?id=de.yesman

Yesman is a location based application that allows to see tasks that need to be done in your
surroundings and allows to post your own tasks for others to perform.
Used stack:
●​ Java
●​ Firebase
●​ Google Map