GammaStack - Blockchain Developer - Backend System
3 days ago
Description
- Lead and own backend development using and
- Design, build, and maintain scalable RESTful APIs and microservices architecture
- Write, debug, and optimize complex raw SQL queries for performance and scalability
- Work with PostgreSQL and Sequelize ORM for data modeling and management
- Implement caching solutions using Redis & Integrate real-time features using
- Develop and integrate smart contracts (Solidity / Rust)
- Work with blockchain protocols (Ethereum, Polygon, BNB Chain, Solana, etc.) to enable smooth crypto transactions
- Design and implement wallet integrations (MetaMask, WalletConnect, custom/custodian wallets)
- Integrate / or similar blockchain libraries into the backend
Required Skills
- 3-5 years of experience as a Backend Developer with at least 2-3 years with blockchain projects
- Expertise in raw SQL queries, indexing, joins, query tuning, and optimization
- Strong proficiency in PostgreSQL and Sequelize ORM
- Hands-on experience with Docker, Redis, and
- Familiarity with AWS cloud services (EC2, S3, RDS)
- Strong understanding of backend performance optimization techniques
- Proven leadership or mentoring experience in engineering teams
- Strong proficiency in Solidity (Rust is a plus)
- Experience with / or similar blockchain libraries
- Experience with multiple blockchain protocols (Ethereum, Polygon, BNB Chain, Solana, etc.)
- Knowledge of wallet integrations (MetaMask, WalletConnect, custom/custodian wallets)
Must-Have Skills
- & backend development
- PostgreSQL (raw SQL, Sequelize ORM)
- Redis caching & real-time features
- Solidity smart contracts & major blockchain protocols (Ethereum, Polygon, BNB, Solana)
- / & wallet integrations (MetaMask, WalletConnect)
- Docker & basic AWS deployment skills
- Backend performance optimization & team leadership
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