Opportunity 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
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