Protocol Engineer – Crypto Payments (Mainnet) + Equity

Velocity Talent; New York (NY); On-site; USD 120,000 - 300,000; Full time

Benefits offered by this job

H-1B transfer support

Job summary

Zohorecruit in New York City is seeking a Protocol Engineer to own protocol-level smart contract systems powering production payments infrastructure and mainnet deployment. This onsite role emphasizes secure, scalable, and audited contracts with real value transfers in a dynamic fintech environment.

The candidate will drive design, implementation, testing, and auditing readiness of core contracts, leveraging DeFi primitives and rigorous security practices to mitigate adversarial risks.

Qualifications

• Production Solidity/EVM smart contract development with contracts deployed to mainnet.
• Protocol-level ownership required beyond integration work.
• Strong grasp of smart contract security patterns, testing frameworks, and gas optimization.
• Experience with DeFi primitives, payments flows, or token standards.
• Ability to reason about adversarial conditions and economic attack surfaces.
• Verification of public code, audits, or deployed mainnet work will be part of the process.

Responsibilities

• Design, build, and ship protocol-level smart contract systems powering production payments infrastructure.
• Own contract architecture, implementation, testing, auditing readiness, and mainnet deployment for systems that move real value.

Skills

Solidity

EVM

Smart contract security

Gas optimization

DeFi primitives

Tools

Testing frameworks

Mainnet deployments

Job description

Zohorecruit in New York City is seeking a Protocol Engineer to own protocol-level smart contract systems powering production payments infrastructure and mainnet deployment. This onsite role emphasizes secure, scalable, and audited contracts with real value transfers in a dynamic fintech environment.

The candidate will drive design, implementation, testing, and auditing readiness of core contracts, leveraging DeFi primitives and rigorous security practices to mitigate adversarial risks.