Blockchain Jobs in San Francisco, California, United States
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Hiring Now Fireblocks Implementation Specialist – Blockchain Infrastructure Engineer
Dallas, TX / San Francisco, CA(Remote/Hybrid)
Contract Opportunity | Multiple Openings
We are looking for senior engineers with strong experience in Fireblocks, HSM/MPC-based signing infrastructure, and large-scale blockchain application design to support enterprise-grade digital asset custody and transaction platforms.
This is a highly technical backend/infrastructure-focused role — ideal for candidates with experience building secure blockchain systems in production environments.
Core Requirements
- Hands-on experience with Fireblocks APIs, SDKs, and webhooks
- Strong understanding of HSM-based signing and secure key management
- Experience implementing MPC (Multi-Party Computation) workflows
- Proven ability to design and support large-scale blockchain applications
- Strong backend engineering skills in Java, Python, Node.js, or Go
- Experience with REST APIs, microservices, and distributed systems
- Deep understanding of blockchain transaction lifecycle (Bitcoin / Ethereum)
- Experience with AWS, Docker, Kubernetes, CI/CD pipelines
Key Responsibilities
- Build and support secure digital asset custody infrastructure
- Develop wallet management and transaction orchestration services
- Implement secure signing workflows and approval policies
- Design scalable blockchain transaction systems with high availability
- Troubleshoot production blockchain transaction and API integration issues
- Collaborate with DevOps, Security, and Product teams on enterprise deployments
- Support compliance and audit processes (SOC 2, ISO 27001, PCI)
Preferred Background
- Crypto exchanges / fintech / digital asset custody platforms
- Fireblocks, BitGo, Coinbase Custody, MPC infrastructure
- Blockchain infrastructure engineering
- High-throughput transaction systems
- Smart contracts / Solidity exposure
Important:
This role requires deep backend and blockchain infrastructure experience. Candidates with only frontend Web3 or basic dApp development experience may not be the right fit.