[Remote] Smart Contract Developer

Note: The job is a remote job and is open to candidates in USA. BlockchainUnmasked is working to make crypto crime solvable. They are seeking an experienced Smart Contract Developer to design, develop, audit, and optimize smart contracts that enhance forensic capabilities and ensure security in decentralized environments.

Responsibilities
• Design, develop, and deploy secure and efficient smart contracts on Ethereum, Bitcoin L2s, Solana, or other relevant blockchains
• Collaborate with forensic engineers to integrate on-chain transaction tracing and investigative tooling
• Implement multi-signature, threshold cryptography, and secure key management mechanisms within smart contracts
• Develop and optimize zero-knowledge proofs (ZKPs), MPC, and privacy-enhancing cryptographic techniques where needed
• Conduct formal verification, fuzz testing, and security audits to identify and mitigate vulnerabilities
• Ensure cross-chain interoperability and work on bridging protocols where necessary
• Work on automated alerting and enforcement mechanisms, enabling law enforcement to freeze or track illicit assets in real time
• Document and maintain clean, well-structured, and auditable code that meets compliance and forensic standards

Skills
• 3+ years of experience in smart contract development
• Proficiency in Solidity, Rust, or Move (depending on target chains)
• Experience with Ethereum (EVM), Bitcoin L2s, Solana, or other blockchains
• Strong understanding of DeFi protocols, security best practices, and attack vectors (reentrancy, flash loans, etc.)
• Familiarity with cryptographic techniques such as ZKPs, MPC, homomorphic encryption, and key management
• Ability to work in a fast-paced, security-first, and research-driven environment
• Experience with cross-chain protocols, bridges, or interoperability frameworks
• Familiarity with wallet integrations, custody systems, or hardware-backed key management
• Experience with on-chain forensic analysis and blockchain analytics is a huge plus
• Experience in formal verification tools like Certora, Slither, or Echidna

Benefits
• Flexible remote work
• Competitive salary
• Equity options
• Opportunities for professional growth

Company Overview
• BlockchainUnmasked is a blockchain intelligence firm that helps law enforcement, legal teams, insurers, and victims investigate crypto-related financial crime and fraud. It was founded in 2021, and is headquartered in Phoenix, Arizona, US, with a workforce of 11-50 employees. Its website is https://www.blockchainunmasked.com.

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