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.

• Design, develop, and deploy smart contracts using Solidity on Ethereum and compatible EVM blockchains.
• Build and maintain dApps
  , including wallets, exchanges, and DeFi 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

• 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
  .

• 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
  .

• 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