Staff Backend Engineer: Digital Asset Custody Core

United States Digital Space LLC; United States; Remote; USD 180,000 - 240,000; Full time

Job summary

United States Digital Space LLC in the United States is seeking a Staff Backend Engineer to help build the next generation of our digital asset custody platform. You will design and implement core services supporting secure custody, transaction processing, wallet infrastructure, and institutional crypto products.

The ideal candidate will have 7+ years of backend experience, strong distributed systems knowledge, and hands-on experience with AWS, PostgreSQL, Redis, and Kafka.

Qualifications

• 7+ years of backend software engineering experience.
• Strong experience with distributed systems and cloud-native architectures.
• Experience building highly available production services.
• Strong understanding of REST APIs, asynchronous messaging, and event-driven systems.
• Experience with AWS or comparable cloud platforms.
• Experience with PostgreSQL, Redis, Kafka, or similar technologies.
• Strong understanding of CI/CD and modern software development practices.
• Excellent debugging and production incident response skills.

Responsibilities

• Design and build backend services supporting the company's digital asset custody platform.
• Develop secure transaction orchestration services for deposits, withdrawals, transfers, staking, and treasury operations.
• Build integrations with custody providers, blockchain infrastructure, and institutional settlement networks.
• Design APIs supporting retail and institutional crypto products.
• Develop services supporting wallet lifecycle management and blockchain interactions.
• Improve platform resiliency through redundancy, disaster recovery, observability, and automated recovery mechanisms.
• Optimize transaction throughput while maintaining strict security controls.
• Build scalable event-driven architectures supporting blockchain state changes and transaction processing.
• Partner closely with Security Engineering to implement cryptographic controls and authorization workflows.
• Collaborate with Product and Infrastructure teams to deliver new digital asset capabilities.

Skills

Distributed systems

REST APIs

CI/CD

Debugging

Production incident response

Cloud-native architectures

Tools

AWS

PostgreSQL

Redis

Kafka

Job description

United States Digital Space LLC in the United States is seeking a Staff Backend Engineer to help build the next generation of our digital asset custody platform. You will design and implement core services supporting secure custody, transaction processing, wallet infrastructure, and institutional crypto products.

The ideal candidate will have 7+ years of backend experience, strong distributed systems knowledge, and hands-on experience with AWS, PostgreSQL, Redis, and Kafka.