malesantare

Web3 Full Stack Engineer

My name is Stanislau, I'm 27 y.o., bachelor's degree of economics/banking. I am fluent in English, Russian, Belarusian, preferred to work as Full Stack Software Developer web3

Highly motivated and detail-oriented Web3 Engineer with 4+ years of experience in blockchain development, smart contract engineering, and decentralized systems. Proficient in building scalable dApps on Solana (Rust/Anchor) and Ethereum (Solidity). Experienced in designing tokenomics models, integrating wallets (Phantom, Metamask), deploying NFTs, and optimizing for gas efficiency and security. Passionate about building next-gen Web3 experiences and pushing the boundaries of decentralized gaming and ownership.

Technical Skills
Programming Languages: Rust, Solidity, C++, Python, Java
Automation Tools: Selenium, Appium, Postman, JMeter
Databases: Oracle, PostgreSQL, MongoDB
CI/CD: Jenkins, GitLab CI, Docker
Blockchain Technologies: Smart contracts, Wallet generation, Cryptographic mechanisms
Blockchain Platforms: Solana (Rust/Anchor), Ethereum (Solidity, Hardhat), Binance Smart Chain
Smart Contracts: Development, auditing, optimization, security best practices
Token Standards: SPL, ERC-20, ERC-721, ERC-1155
Wallet Integrations: Phantom, Metamask, WalletConnect
Tools & Frameworks: Solana CLI, Anchor, Hardhat, Ethers.js, Web3.js, Truffle, Foundry
NFTs & Marketplaces: Metadata standards, minting, metadata updates, marketplace integrations
Security & Gas Optimization: Reentrancy, overflow, front-running mitigation, gas-efficient patterns
Cross-chain Interoperability: LayerZero, Wormhole, bridge mechanisms
DevOps & Deployment: CI/CD pipelines, Docker, AWS, GitLab/GitHub Actions

Experience: 4 years

Yearly salary: $80,000

Hourly rate: $40

Nationality: 🇧🇾 Belarus

Residency: 🇧🇾 Belarus

Experience

Full Stack Developer

Perfomance Lab

2024 - 2025

Built and deployed backend processes using Java and Cucumber-JVM. Developed business logic for financial operations and ensured database consistency across PostgreSQL and MySQL. Conducted performance testing on high-load systems. Code reviews and ensured compliance with coding standards and security best practices.

Full Stack Developer

Catapplication

2024 - 2024

Developed backend components in Rust and C++ to handle game events and blockchain transactions. Integrated wallet systems using TON Connect and WalletConnect, enabling secure user interaction with blockchain networks. Implemented cryptographic functions including wallet generation, transaction signing, and data encryption. Built a lightweight frontend UI using HTML/C#, integrated with the Telegram Bot API for seamless user experience. Designed and developed RESTful APIs for communication between client-side and server-side components, as well as between internal services. Participated in API design, documentation, and integration with smart contracts deployed on Solana (Rust/Anchor) and TON (TVM). Conducted load testing of backend components using JMeter to ensure stability under high traffic. Collaborated with developers to resolve defects, optimize performance, and improve security across the system.

Full Stack Developer

PFLB

2023 - 2024

Developed backend logic for banking applications using Java and Node.js, integrated with external services via REST API and WebSocket. Designed and maintained automated CI/CD pipelines using GitLab CI. Worked extensively with relational databases (PostgreSQL, MySQL) - writing complex SQL queries, optimizing performance, and ensuring data integrity. Collaborated closely with DevOps to deploy, scale, and monitor production services using Prometheus and Slack alerts.

Full Stack Developer

Skillwill.corp USA

2022 - 2023

Drawing up test cases, filing bugs in Jira, creating checklists, requirements analysis, root cause analysis, testing reports Experience with Oracle, PostgreSQL databases, writing scripts for data retrieval (including complex queries and subqueries), as well as non-relational MongoBD databases Experienced with: DevTools, Kafka, Java. Experience with REST (using Swagger, Postman, SOAP (SOAP UI), Curl, WebSocket (JMeter tool) Worked with CI tools: Jenkins, GitLab CI, (editing test pipelines, applying patches, working with artifactory, rebuilding test envs), Git (creating test branches, adding tests to a remote repository) Gained experience in automated testing using Postman.

Full Stack Developer

Yandex

2021 - 2021

Developed and maintained RESTful APIs using Swagger, Postman, and SOAP UI. Worked with multiple databases: Oracle, PostgreSQL, MongoDB. Automated API testing workflows using Postman and Jenkins. Configured CI/CD pipelines using Git, created feature branches, and managed artifacts. Gained experience with Kafka, WebSocket, and browser tools like DevTools.

WEB3 Developer

FlexBoys

2020 - 2024

Built and deployed multiple smart contracts on Solana (Rust/Anchor) and Ethereum (Solidity) for DeFi, NFT marketplaces, and gaming platforms. Designed and implemented tokenomics models, including staking, yield farming, and governance structures. Integrated wallet providers (Phantom, Metamask) to enable seamless user interactions with on-chain logic. Optimized contract execution to reduce gas costs by up to 30% and ensured adherence to Web3 security best practices. Developed cross-chain bridges and messaging protocols using LayerZero and Wormhole. Collaborated closely with product and design teams to translate game mechanics into blockchain-based features.

Skills

java

node

rust

solidity

web3

web3-py

ton-developer

english

russian

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