Senior Backend Engineer (Web3/Fintech)

Senior Backend Engineer

Company

Dunamu

Conditions

3 days agoSenior Seoul, South Korea Onsite Full Time Backend Jobs by Dunamu

Dunamu Dunamu is a company providing blockchain and investment-information services. It operates Korea-focused digital-asset exchange and securities-information offerings, emphasizing safe, transparent trading and easier investing. Distributed Funding Unknown ($204M) Unknown ($670M) M&A ($10B) Investors Hanwha Investment and Securities Saehan Venture Capital Hana Financial Investment Kakao Corp Kakao Ventures About Dunamu Dunamu provides blockchain services centered on a leading Korean digital-asset exchange and aims to set standards for safe, transparent trading. It also offers investment-related services and information for Korean and U.S. stocks and unlisted securities, serving people seeking digital-asset trading and investment information. View jobs by Dunamu

Skills

Ai Aml Architecture Aws Backend Benchmarking Compliance Consistency Event-Driven Architecture Fds Idempotency Java Kafka Kotlin Kubernetes Message Queue Monitoring Msa Profiling Python Ruby Security Spring Testing Transaction

About the Role

You will design, develop, and operate backend architectures for large-scale digital-asset transactions and customer-facing services. You will ensure transaction consistency, idempotency, security, compliance, reliability, and scalability. You will analyze monitoring data and incidents, write effective tests, collaborate on business requirements, and improve services through performance analysis and automation.

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.

Responsibilities

• Design and implement architectures for high-volume asset transactions, including trading and 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.

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