Engineer Part-Timer (Backend / Frontend / R&D)
HashPort Inc. provides blockchain solutions centered on non-custodial wallets, stablecoin payments, SBT loyalty services, RWA tokenization, and Web3 consulting and system development. Its clients include financial institutions, corporations, government agencies, and public organizations.
Funding history
Investors
About HashPort Inc.
HashPort Inc. is a Japanese blockchain company founded in 2018 that develops and operates non-custodial wallet products, including HashPort Wallet, HashPort Wallet for Biz, and the EXPO2025 Digital Wallet. It also provides enterprise solutions such as wallet SDK and system integration, stablecoin payment infrastructure, SBT-based loyalty services, and tokenization of real-world assets. The company serves financial institutions, corporations, government and public-sector organizations, and other enterprises seeking to implement blockchain and Web3 services.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
Work on HashPort Wallet, a Japanese Web3 wallet serving approximately one million users. Depending on skills and interests, contribute to frontend, backend, or research and development while working with production code under senior engineer guidance.
Requirements
- Fundamental computer science knowledge including data structures and algorithms
- High intellectual curiosity and fast learning ability
- Personal or academic experience with React/TypeScript, Go, or AWS
- Basic version control skills using Git and GitHub
- Self-driven attitude to identify and solve problems
- Motivation to explore and select the best technology for the product
- Experience with Capacitor, Ionic, or React Native is a plus
- Basic knowledge of AWS and Terraform is a plus
- Deep knowledge of Web3, blockchain technology, and cryptography is a plus
- Academic research background in computer science, mathematics, or physics is a plus
Responsibilities
- Improve and maintain HashPort Wallet features
- Implement mobile web app features and UI components using React and TypeScript
- Improve the wallet application's user experience
- Develop APIs using Go
- Integrate Aurora and DynamoDB databases on AWS
- Maintain authentication functionality
- Research cryptography theory, Web3 papers, and EIPs
- Write explanatory articles and blog posts
- Present research findings to the team
- Implement proof-of-concept projects for new protocols and technologies
Benefits
- Free drinks and snacks