Staff Backend Engineer, Custody Core (Crypto Security)
Staff Backend Engineer, Custody Core (Crypto Security)
Posted 45 days ago
SENIORITY
Lead
About the role
- Design and build backend services supporting SoFi'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
- 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 systemsExperience 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
- Experience working with digital assets or blockchain infrastructure
- Experience integrating with custody platforms such as Fireblocks, BitGo, or Anchorage
- Experience building financial services infrastructure
- Familiarity with blockchain transaction lifecycle and wallet architecture
- Experience designing secure approval workflows
- Understanding of distributed consensus and cryptographic systemsExperience supporting institutional financial platforms
Before you apply
Applying takes about a minute. These four things decide how fast it moves after that.
Your profile is current
It's what we read first. Occupations, seniority and locations matter more than a long history.
Two examples you can talk through
Not a portfolio — just two pieces of work where you can explain the decisions and what you'd change.
A number in mind
What you're on now and what would make you move. We negotiate better when we know both.
Your notice period
Employers plan around it, and it's the question that stalls offers most often.
Once you apply, someone reads it and calls you before anything reaches the employer — usually within two working days.
