Senior Blockchain Engineer - Custody & Tokenization

Aquent; Southlake (TX); On-site; USD 112,000 - 124,000; Full time

Job summary

Aquent is hiring a Senior Engineer, Blockchain Platforms, to shape the foundational infrastructure of our digital-asset ecosystem. You will work hands-on to design, build, and secure core blockchain services, including custody integrations and wallet workflows, on an onsite team in Southlake, TX.

You will collaborate across custody, security, and platform teams, ensuring scalable, observable, and resilient blockchain operations while leveraging AI tools to speed development and testing in a

Qualifications

• 7+ years of professional software engineering experience.
• Hands-on experience building or integrating blockchain or distributed ledger systems.
• Proficiency in Go, Java, Rust, Python, or similar.
• Ability to work effectively across custody, security, and platform teams.

Responsibilities

• Integrate institutional systems with existing Layer-1 blockchains, evaluating and extending capabilities to meet custody, scalability, and resiliency needs.
• Deeply understand chain-level mechanics such as transaction lifecycle, finality, forks, reorgs, and event propagation to ensure reliable integrations under stress and production loads.
• Design and build core blockchain infrastructure services, including indexers, event processors, block explorers, observability tooling, chain data services, APIs, and interoperability components.
• Ensure blockchain data pipelines are accurate, performant, and auditable, supporting operational tooling for troubleshooting, monitoring, and incident response.
• Contribute to wallet architecture and development, focusing on blockchain-facing wallet services, transaction creation, signing workflows, and submission pipelines.
• Integrate with custody key management systems (MPC, HSMs, signing services), ensuring clean separation of protocol logic, security controls, and business rules.
• Partner closely with custody and security engineers to validate end-to-end transaction flows and ensure wallet and transaction pipelines behave correctly across normal and edge-case chain conditions.
• Share responsibility for custody-related blockchain workflows, including on-chain transaction execution, event monitoring, reconciliation, and chain-specific failure handling and recovery patterns.
• Help define safe patterns for interacting with smart contracts and token standards from custody platforms, ensuring workflows align with custody policies, approvals, and risk controls.
• Apply modern engineering practices to build reliable, testable, and observable blockchain services, leveraging AI tools to accelerate protocol analysis, code development, testing, documentation, and knowledge sharing while maintaining engineering rigor.

Skills

Blockchain experience

Distributed systems

Backend APIs

Team collaboration

Go/Java/Rust/Python

Job description

Aquent is hiring a Senior Engineer, Blockchain Platforms, to shape the foundational infrastructure of our digital-asset ecosystem. You will work hands-on to design, build, and secure core blockchain services, including custody integrations and wallet workflows, on an onsite team in Southlake, TX.

You will collaborate across custody, security, and platform teams, ensuring scalable, observable, and resilient blockchain operations while leveraging AI tools to speed development and testing in a