Senior Blockchain Engineer, Digital Assets

Senior Blockchain Engineer, Digital Assets 

Locations: Southlake, TX; Austin, TX 

Role Summary 

Build and integrate the blockchain infrastructure layer that underpins digital asset custody and tokenization platforms. The posting describes this as a hands-on engineering role focused on Layer-1 blockchain integration, core blockchain infrastructure, wallet engineering, and custody-related blockchain workflows. 

Key Responsibilities 

• Integrate enterprise systems with existing Layer-1 blockchains and evaluate or extend Layer-1 capabilities to meet custody, scalability, and resiliency needs. 

• Engineer for chain-level mechanics such as transaction lifecycle, finality, forks, reorgs, and event propagation, while ensuring blockchain integrations remain reliable under stress conditions and production loads. 

• Design and build core blockchain infrastructure services including indexers, event processors, block explorers, observability tooling, chain data services and APIs, and interoperability or cross-chain integration components. 

• Build and support wallet architecture, transaction creation and signing workflows, submission pipelines, and integration with custody key management systems such as MPC, HSMs, and signing services. 

• Support custody-related blockchain workflows covering on-chain transaction execution, event monitoring and reconciliation, and chain-specific failure handling and recovery patterns. 

• Help define safe patterns for interacting with smart contracts and token standards from custody platforms, aligned to custody approvals and risk controls. 

• Apply modern engineering practices and AI-augmented development approaches for protocol analysis, code development and testing, documentation, and knowledge sharing. 

Source-Supported Qualification Themes 

• 7+ years of professional software engineering experience. 

• Hands-on experience building or integrating blockchain or distributed ledger systems. 

• Strong understanding of Layer-1 blockchain protocols and transaction lifecycles. 

• Experience building backend services, APIs, and infrastructure components. 

• Proficiency in one or more languages such as Go, Java, Rust, Python, or similar. 

• Ability to work effectively across custody, security, and platform teams. 

• Strongly preferred: 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; and experience using AI tooling to support complex software development.