nazardovhyy

Full Stack Java Developer With Solidity Knowledge

Highly skilled Java Full-Stack Developer with a strong background in both web2 and blockchain technologies. I am seeking a Full-Stack Blockchain position or a Java Full-Stack developer role.


Yearly salary: $60,000

Hourly rate: $30

Nationality: πŸ‡ΊπŸ‡¦ Ukraine

Residency: πŸ‡ΊπŸ‡¦ Ukraine


Experience

Solidity Smart Contract Developer
Eat The Blocks
2024 - 2024
Successfully created and deployed an ERC-20 smart contract on the Base mainnet. Developed and deployed an Airdrop Smart Contract to facilitate token distribution. Conducted thorough testing of smart contracts using Foundry, ensuring robustness and security. Deployed smart contracts on a local testnet and a fork of the mainnet for comprehensive testing and debugging. Optimized smart contracts for gas efficiency, reducing transaction costs and improving overall performance. Gained hands-on experience with Solidity, Yul, and Ethereum development tools and frameworks.
Java Full-Stack Developer
Hello Neighbour
2024 - 2024
Contributed to the development of an all-in-one solution for managing property lettings, tenant, and landlord activities. Implemented backend services using Java 8, Spring Boot, REST API, and Hibernate. Integrated third-party services like Twilio and Sendgrid for seamless communication. Optimized database interactions with MySQL and deployed the application on Microsoft Azure. Developed the frontend using Angular 13, TypeScript, and SCSS.
Java Software Engineer
Avenga
2019 - 2023
Contributed to the development of the core engine for asynchronous chatbot message and event processing, boosting customer engagement across multiple platforms. Executed full-stack development tasks, enhancing both backend with Java and Spring Boot, and frontend with Angular 13 and TypeScript. Built microservices to facilitate secure exchanges of verified personal information between users and authorized entities. Developed asynchronous communication channels using RabbitMQ, ensuring robust data handling.
Java Developer + Android
Freelance
2019 - 2020
Built a mobile application for managing paragliding flight school training sessions, using Java, Kotlin, and Spring Boot. Deployed the app backend service on AWS, ensuring high availability and scalability.
Android Developer
Freelance
2017 - 2018
Created a mobile application for construction workers to order materials and generate receipts, streamlining on-site operations.
Android Developer
Freelance
2017 - 2017
Developed an MVP for the 'Augmented University' mobile app, integrating schedules, library resources, and Google Calendar.
Java Developer
SoftServe
2016 - 2019
Analyzed requirements and developed features for an enterprise web system that centralized the verification of calibration devices across Ukraine. Refactored architecture and optimized performance, resulting in a more efficient system. Pioneered the architecture and development of an Android app for gas consumers in Ukraine, allowing easy meter readings, payment tracking, and online payments. Extended backend logic using stored procedures and implemented frontend features for an ERP billing system.

Skills

blockchain
erc-20
ethereum
ethereumjs
evm
solidity
web3js
java
english