Senior Blockchain Engineer (2 Headcount)

Job Title- Senior Blockchain Engineer

Project Location Fully onsite in Irvine or Mountain View, CA

Duration- 3-6 months contract to hire

Visa- USC

Document : Need 2 references.

LinkedIn ID needed.

Project Description : Senior Blockchain Engineer will architect and implement the blockchain foundation of the BioMatrix.ai ecosystem . They will design secure, scalable, and user-friendly blockchain solutions that integrate biometric identity, payments, and data services.

This is a hands-on engineering role for someone who has deep blockchain expertise , thrives in 0 1 innovation , and is motivated to build real-world applications at global scale. Will work on upcoming projects around Real World Assets (RWA).

Duties / Day to Day Overview

Go-to Blockchain expert

70% coding / 30% cross-functional work providing guidance to Product Managers and Marketing teams on technical feasibility

Will be involved in new product design with Marketing team

Meeting with end customers (5 hours / week)

Will work with team in China (unsure what hours but will allow flexibility for start times)

Design, build, and maintain blockchain protocols, smart contracts, and distributed systems powering BioMatrix.ai.

Develop tokenized payment systems and identity verification flows, ensuring 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 blockchain development with roadmap and user needs.

Mentor junior engineers and contribute to best practices for blockchain development within AC Tech.

Stay ahead of emerging trends in Web3, DeFi, real-world asset (RWA) tokenization, and decentralized identity to guide innovation.

(Must haves)

Layer 2 Blockchain Experience

Proficiency in Java (any version)

Real World Assets (RWA tough find)

Bachelor's or Master's degree in Computer Science, Cryptography, or related technical field.

5+ years of blockchain development experience (protocol, dApps, Layer 1 / Layer 2, or DeFi / Web3).

Proficiency in Java and Solidity.

Strong understanding of smart contract security, cryptography, and distributed systems.

Experience with Ethereum, Solana, or other major blockchain platforms.

Proven track record of delivering production-grade blockchain systems.

Excellent problem-solving, collaboration, and communication skills.