Blockchain Developer

Mastar. Rec is hiring a Blockchain Developer to support innovative financial technology platforms operating across the United States. This role focuses on building, scaling, and securing modern financial systems in a fast-paced environment.

Key Responsibilities

Design, develop, and deploy smart contracts using Solidity on Ethereum and compatible EVM blockchains. Build and maintain d. Apps, including wallets, exchanges, and De. Fi protocols. Integrate blockchain technologies with existing systems, APIs, and cloud infrastructures. Design, build, or manage Fin. Tech platforms and solutions Collaborate with engineering, product, and compliance teams Ensure regulatory and security best practices Support scalability, performance, and reliability Requirements Required Skills Fin.

Tech or financial systems knowledge Data, risk, or software development expertise Strong analytical and communication skills Experience with blockchain frameworks such as Truffle, Hardhat. Strong understanding of cryptographic principles, decentralized networks, and consensus mechanisms. Desired Skills Exposure to Polkadot, Cosmos, or Solana ecosystems.

Experience with Layer 2 solutions (e.g., Arbitrum, Optimism). Understanding of zero-knowledge proofs (zk-SNARKs / zk-Rollups). Payments, lending, or blockchain experience Regulatory or compliance knowledge Familiarity with containerization (Docker) and CI/CD pipelines.

Benefits

Job Benefits Competitive base salary plus crypto or equity incentives Flexible remote-first work environment Competitive salary and bonus potential Health, dental, and vision insurance Equity or incentive programs (role dependent) Comprehensive health and wellness support