Blockchain Tester Jobs (NOW HIRING)

Aquent is collaborating with a leading financial institution that is at the forefront of innovation in digital asset custody and tokenization. This institution is dedicated to building the secure, reliable, and scalable infrastructure necessary to power the next generation of financial services.Join a team that is pioneering new frontiers in digital finance, where your expertise will directly contribute to shaping the future of how assets are managed and secured.

Are you a seasoned engineer passionate about the transformative power of blockchain technology? We are seeking a visionary engineer to play a pivotal role in building and integrating the foundational blockchain infrastructure that underpins cutting-edge digital asset custody and tokenization platforms. This is a hands-on opportunity where you will operate at the intersection of blockchain protocol mechanics and institutional custody systems, directly impacting the security, reliability, and scalability of critical financial infrastructure. Your work will establish robust foundations, ensuring predictable, observable, and resilient blockchain integrations, and enabling safe and consistent interactions with digital assets.

What You'll Do:

• Pioneer Layer-1 Blockchain Integration:
• Integrate core systems with existing Layer-1 blockchain protocols, evaluating and extending capabilities to meet demanding custody, scalability, and resiliency needs.
• Deeply understand chain-level mechanics including transaction lifecycles, finality, forks, reorgs, and event propagation.
• Ensure all blockchain integrations are robust and reliable under stress conditions and production loads.
• Design & Build Core Blockchain Infrastructure:
• Develop essential blockchain infrastructure services such as indexers, event processors, block explorers, observability tooling, chain data services, and APIs.
• Construct interoperability and cross-chain integration components to enhance system capabilities.
• Guarantee that blockchain data pipelines are accurate, performant, and fully auditable.
• Support operational tooling vital for troubleshooting, monitoring, and incident response in a distributed environment.
• Innovate Wallet Architecture & Development:
• Contribute to the design and development of blockchain-facing wallet services.
• Engineer transaction creation, signing workflows, and submission pipelines.
• Integrate with advanced custody key management systems, including MPC, HSMs, and sophisticated signing services.
• Ensure wallet implementations clearly separate protocol logic, robust security controls, and business rules.
• Collaborate closely with custody and security engineers to validate end-to-end transaction flows for utmost integrity.
• Optimize Custody-Related Blockchain Workflows:
• Share responsibility for critical custody-related blockchain workflows, including on-chain transaction execution, event monitoring, and reconciliation.
• Develop and implement chain-specific failure handling and recovery patterns.
• Help define safe and secure patterns for interacting with smart contracts and token standards from custody platforms.
• Ensure all blockchain workflows rigorously align with custody policies, approval processes, and stringent risk controls.
• Champion Engineering Rigor & AI-Augmented Development:
• Apply modern engineering practices to build highly reliable, testable, and observable blockchain services.
• Leverage cutting-edge AI tools to accelerate protocol analysis, code development, testing, documentation, and knowledge sharing.
• Maintain unwavering engineering rigor, balancing speed with correctness and safety to deliver exceptional quality.

• *What You Bring:**

Must-Have Qualifications:

• 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.
• Proven experience building backend services, APIs, and infrastructure components.
• Proficiency in one or more programming languages such as Go, Java, Rust, Python, or similar.
• Demonstrated ability to work effectively and collaboratively across custody, security, and platform teams.

Nice-to-Have 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 complex, distributed, and asynchronous environments.
• Experience using AI tooling to support intricate software development processes.

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About Aquent Talent:

Aquent Talent connects the best talent in marketing, creative, and design with the world's biggest brands.
Our eligible talent get access to amazing benefits like subsidized health, vision, and dental plans, paid sick leave, and retirement plans with a match.
Aquent is an equal-opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics. We're about creating an inclusive environment-one where different backgrounds, experiences, and perspectives are valued, and everyone can contribute, grow their careers, and thrive.

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