Senior Backend Engineer

Design, develop, and operate backend architectures for large-scale digital-asset transactions and customer-facing services, ensuring consistency, idempotency, security, compliance, reliability, and scalability.

Responsibilities

• Design and implement architectures for high-volume asset transactions, including trading, deposits, and withdrawals.
• Integrate with banking and blockchain systems to process customer asset transactions accurately.
• Record, manage, and prepare transaction data for use by related departments.
• Design and implement backend architectures for customer-facing services.
• Clarify complex business requirements with planning, operations, legal, and compliance stakeholders.
• Ensure transaction consistency and idempotency in scalable architectures.
• Design resilient, self-healing systems in MSA and distributed infrastructure environments.
• Analyze logs and monitoring metrics to prevent, detect, investigate, and prevent recurrence of incidents.
• Write effective test code for exception cases and boundary conditions.
• Design systems that protect customer assets under a zero-trust security model.
• Integrate compliance requirements including Travel Rule, AML, and FDS systems.

Requirements

• 7+ years of experience designing, developing, and operating backend architectures for customer-facing services.
• 5+ years of backend service development experience with Spring, Kotlin, or Java.
• Experience using AI coding agents for code writing, testing, refactoring, and output validation.
• Experience operating high-traffic or highly available services and improving performance and reliability.
• Experience designing systems in an MSA environment with service communication, data consistency, and fault isolation considerations.
• Advanced understanding of operating systems, databases, networks, and infrastructure-layer principles.
• Familiarity with scripting languages such as Ruby or Python.