thecrows0310

Web3 Engineer

Senior Web3 Engineer with 8+ years of experience in blockchain-integrated frontend development. Specialized in React.js, Next.js, and Web3.js, with expertise in multi-chain DApps, NFT marketplaces, and smart contract integrations. Proven ability to optimize system efficiency, reduce costs, and enhance user experiences. Seeking to contribute to innovative and dynamic teams.


Experience: 8 years

Yearly salary: $84,000

Hourly rate: $40

Nationality: πŸ‡―πŸ‡΅ Japan

Residency: πŸ‡ΊπŸ‡Έ United States


Experience

FULLSTACK ENGINEER
LeadEdge Co., LTD
2024 - 2025
Applied RBAC, Commit-Reveal mechanisms, and hybrid governance architectures to strengthen access control, mitigate front-running risks, and balance on-chain/off-chain governance in DAO smart contract systems. Deployed a Subgraph and optimized GraphQL queries, resulting in a 7% improvement in query speed. Implemented the Wagmi library to support multi-chain and multi-wallet environment, achieving a 3% improvement in user experience.
WEB3 FRONTEND AND BACKEND ENGINEER
FACULTY GROUP
2022 - 2023
Standardized and centralized reusable components across eight websites managed by the Faculty Group, significantly improving development speed and consistency in UI/UX quality. Implemented Staking, Farming, and Yield Farming using Monte Carlo simulation, liquidity pool yield optimization, and Pancakeswap's MasterChef algorithm, the accuracy of liquidity pool distribution calculations has been improved and user participation has increased by 10%. Converted traditional REST API requests into GraphQL queries, improving server response time by 3% through optimized caching and indexing.
Full Stack Developer
Cashcow
2019 - 2021
Built NFT marketplace integrated with OpenSea API, handling real-time asset sync and smart contract interactions. Deployed a performant NFT scanner and socket server infrastructure using FastAPI, Redis, and PostgreSQL, enabling realtime asset sync and low-latency data retrieval. Developed monitoring dashboards to visualize system health, reducing downtime and maintenance cost.
JUNIOR DEVELOPER
SilverStar Japan Co., LTD
2013 - 2017
Developed Sugoi ItiAwase Pro using C#, focusing on implementing features and optimizing application performance. Worked extensively on print-related tasks, ensuring accurate and efficient printing processes within the application. Collaborated with senior developers to integrate new functionalities and improve the user interface. Conducted debugging, testing, and quality assurance to maintain high standards of software reliability.

Skills

backend
blockchain
python
rust
solidity
web3js
front-end
english
japanese