Senior Blockchain Platforms Engineer

Our client is currently seeking a Senior Blockchain Platforms Engineer


Location: Southlake, TX or Austin, TX (On-site 4 days per week)

Job Type: Contract (12 Months) with potential for FTE conversion

About the Role


We are seeking a Senior Engineer, Blockchain Platforms to design, build, and integrate the blockchain infrastructure layer underpinning our digital asset custody and tokenization platforms.


This is a hands-on engineering role focused on Layer-1 blockchain integration, core infrastructure components, wallet engineering, and custody-related workflows. Working at the intersection of blockchain protocol mechanics and institutional-grade financial systems, you will partner closely with Crypto Custody Lead Engineers and Crypto Security Engineers to ensure all blockchain interactions are secure, reliable, observable, and production-ready.


Responsibilities


As a Senior Blockchain Platforms Engineer, you will focus on four core areas:


1. Layer-1 Blockchain Integration & Platforms
• Integrate enterprise systems with existing Layer-1 blockchains (e.g., Ethereum-based or other enterprise-relevant L1s).
• Evaluate, build, or extend Layer-1 capabilities to meet enterprise custody, scalability, and resiliency needs.
• Manage chain-level mechanics including transaction lifecycles, finality, forks, reorgs, and event propagation.
• Ensure blockchain integrations remain highly reliable under stress conditions and production loads.


2. Blockchain Infrastructure Components
• Design and build core blockchain infrastructure services, including indexers, event processors, block explorers, observability tooling, chain data services, and APIs.
• Develop interoperability and cross-chain integration components.
• Ensure blockchain data pipelines are accurate, performant, and auditable.
• Support operational tooling required for troubleshooting, monitoring, and incident response.


3. Wallet Architecture & Development
• Contribute to blockchain-facing wallet services, transaction creation, signing workflows, and submission pipelines.
• Integrate systems with custody key management frameworks, including MPC, HSMs, and signing services.
• Ensure wallet implementations cleanly separate protocol logic, security controls, and business rules.
• Partner with custody and security teams to validate end-to-end transaction flows.


4. Custody Workflows & Engineering Rigor
• Manage on-chain transaction execution, event monitoring, reconciliation, and chain-specific failure/recovery patterns.
• Define safe patterns for interacting with smart contracts and token standards from institutional custody platforms.
• Leverage GenAI and agentic AI tools to accelerate protocol analysis, code development, testing, and documentation without sacrificing correctness or safety.


Qualifications


Minimum Qualifications
• Experience: 7+ years of professional software engineering experience.
• Blockchain Domain: Hands-on experience building or integrating blockchain or distributed ledger systems, with a strong understanding of Layer-1 protocols and transaction lifecycles.
• Backend Systems: Proven experience building backend services, APIs, and robust infrastructure components.
• Programming Languages: Proficiency in one or more languages such as Go, Java, Rust, Python , or similar.
• Collaboration: Demonstrated ability to work effectively across cross-functional custody, security, and platform teams.


Preferred Qualifications
• Experience with blockchain indexers, explorers, or chain analytics systems.
• Familiarity with wallet architecture and blockchain signing workflows.
• Exposure to crypto custody platforms or security-sensitive financial systems.
• Strong debugging instincts in distributed, asynchronous environments.
• Experience utilizing AI tooling to support and accelerate complex software development.