Blockchain Developer

Trident Consulting; Irvine (CA); Remote; USD 96,432 - 117,096; Full time

Job summary

A leading IT staffing firm is seeking a Senior Blockchain Engineer to design and maintain blockchain protocols and smart contracts. The ideal candidate has over 5 years of experience in blockchain development, strong proficiency in Java and Solidity, and excellent problem-solving skills. This role involves coding and collaboration with cross-functional teams, and offers a pay rate of $70-$85 per hour depending on experience. Flexible onsite locations include Irvine and Mountain View, CA.

Qualifications

• 5+ years of blockchain development experience (protocol, dApps, Layer 1/Layer 2, or DeFi/Web3).
• Experience with Ethereum, Solana, or other major blockchain platforms.
• Proven track record of delivering production-grade blockchain systems.

Responsibilities

• Go-to Blockchain expert with 70% coding / 30% cross-functional collaboration.
• Mentor junior engineers and establish best practices for blockchain development.

Skills

Layer 2 blockchain experience

Proficiency in Java

Proficiency in Solidity

Smart-contract security

Cryptography

Distributed systems

Problem-solving

Collaboration

Communication skills

Education

Bachelor’s or Master’s degree in Computer Science

Job description

Senior Blockchain Engineer

Location: Fully onsite – Irvine, CA or Mountain View, CA (flexibility based on circumstances)

Duration: 3–6 Months Closed‑Term Hire

Pay Rate: $70–$85 per hour on C2C based on experience

Work Authorization: No visa sponsorship required

Day to Day Duties

• Go-to Blockchain expert with 70% coding / 30% cross‑functional collaboration
• Guide Product Managers and Marketing on technical feasibility and new product design
• Meet with end customers (about 5 hours per week)
• Coordinate with a team in China with flexible start times
• Design, build, and maintain blockchain protocols, smart contracts, and distributed systems for BioMatrix.ai
• Develop tokenized payment systems and identity‑verification flows with high security and usability
• Implement smart contracts for token utility, payments, and governance
• Ensure security, scalability, and efficiency of blockchain systems through rigorous testing and best practices
• Integrate biometric verification (Face Scan) and payment flows (BioPay) into blockchain applications
• Collaborate with Product, Engineering, and QA teams to align development with roadmap and user needs
• Mentor junior engineers and establish best practices for blockchain development within AC Tech
• Stay ahead of emerging trends in Web3, DeFi, RWA tokenization, and decentralized identity

Top Requirements

• Layer 2 blockchain experience
• Proficiency in Java (any version) and Solidity
• Strong understanding of smart‑contract security, cryptography, and distributed systems
• 5+ years of blockchain development experience (protocol, dApps, Layer 1/Layer 2, or DeFi/Web3)
• Experience with Ethereum, Solana, or other major blockchain platforms
• Proven track record of delivering production‑grade blockchain systems
• Bachelor’s or Master’s degree in Computer Science, Cryptography, or related technical field
• Excellent problem‑solving, collaboration, and communication skills

Nice to Have

• Fluency in Chinese (team in China)
• Experience in Go
• Fintech, identity verification, or biometric systems experience
• Experience working on payments platforms

Trident Consulting is a premier IT staffing firm providing high‑impact workforce solutions to Fortune 500 and mid‑market clients. Since 2005, we specialize in sourcing elite technology and engineering talent for contract, direct hire, and managed services roles.