Software developer

job summary:
We are hiring a Senior Engineer, Blockchain Platforms to help build and integrate the blockchain infrastructure layer that underpins Cllient's digital asset custody and tokenization platforms.

This is a hands-on engineering role focused on Layer-1 blockchain integration, core blockchain infrastructure components, wallet engineering, and custody-related blockchain workflows. The role works in close partnership with Crypto Custody Lead Engineers and Crypto Security Engineers to ensure blockchain interactions are secure, reliable, observable, and production-ready. This engineer operates at the intersection of blockchain protocol mechanics and institutional custody systems.

What This Engineer Will Do

Layer-1 Blockchain Integration & Platforms

Integrate Cllient's systems with existing Layer-1 blockchains (e.g., Ethereum-based or other enterprise-relevant L1s).

Evaluate and, where appropriate, contribute to building or extending Layer-1 capabilities to meet custody, scalability, or resiliency needs.

Understand chain-level mechanics such as transaction lifecycle, finality, forks, reorgs, and event propagation.

Ensure blockchain integrations are reliable under stress conditions and production loads.

Blockchain Infrastructure Components

Design and build core blockchain infrastructure services, including:

Indexers and event processors

Block explorers and observability tooling

Chain data services and APIs

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.

Wallet Architecture & Development

Contribute to wallet architecture and development, including:

Blockchain-facing wallet services

Transaction creation, signing workflows, and submission pipelines

Integration with custody key management systems (MPC, HSMs, signing services)

Ensure wallet implementations cleanly separate protocol logic, security controls, and business rules.

Partner closely with custody and security engineers to validate end-to-end transaction flows.

Custody-Related Blockchain Workflows

Share responsibility for custody-related blockchain workflows, including:

On-chain transaction execution

Event monitoring and reconciliation

Chain-specific failure handling and recovery patterns

Help define safe patterns for interacting with smart contracts and token standards from custody platforms.

Ensure blockchain workflows align with custody policies, approvals, and risk controls.

Engineering Rigor & AI-Augmented Development

Apply modern engineering practices to build reliable, testable, and observable blockchain services.

Leverage GenAI and agentic AI tools to accelerate:

Protocol analysis

Code development and testing

Documentation and knowledge sharing

Maintain engineering rigor-speed without sacrificing correctness or safety.

location: Southlake, Texas
job type: Contract
salary: $79.37 - 84.37 per hour
work hours: 8am to 5pm
education: Masters


responsibilities:
We are hiring a Senior Engineer, Blockchain Platforms to help build and integrate the blockchain infrastructure layer that underpins Cllient's digital asset custody and tokenization platforms.

This is a hands-on engineering role focused on Layer-1 blockchain integration, core blockchain infrastructure components, wallet engineering, and custody-related blockchain workflows. The role works in close partnership with Crypto Custody Lead Engineers and Crypto Security Engineers to ensure blockchain interactions are secure, reliable, observable, and production-ready. This engineer operates at the intersection of blockchain protocol mechanics and institutional custody systems.

qualifications:
What you have

Required Qualifications

7+ years of professional software engineering experience.

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

Robust 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.

Highly 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.

Robust debugging instincts in distributed, asynchronous environments.

Experience using AI tooling to support complex software development.

What Success Looks Like

Blockchain integrations are predictable, observable, and resilient.

Wallet and transaction pipelines behave correctly across normal and edge-case chain conditions.

Custody systems interact with blockchains safely and consistently.

Incidents related to blockchain dependencies are well understood and quickly diagnosed.

This role establishes robust foundations for scalable digital-asset custody and tokenization platforms.

Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact View email address on click.appcast.io.


Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).


This posting is open for thirty (30) days.