Remote-friendly Senior Backend Engineer, Crypto Payments

BVNK; United States; Hybrid; USD 140,000 - 210,000; Full time

Benefits offered by this job

Competitive salary

Hybrid/Flexible hours

Culture and growth

Flexible holidays

Global offices

Open and creative environment

Job summary

BVNK is seeking a Senior Software Engineer (Backend) to join our Crypto Payments Orchestration team. You will design, build and scale high-throughput backend services that handle crypto pay-ins, pay-outs and cross-currency flows, while aligning with our AI-native approach.

You'll own services end to end, partner with Product and Compliance, and help modernise core systems with modular design. Applicants should have strong Java 17+ and Spring Boot experience, plus Kafka/SQS, relational DBs, AWS,

Qualifications

• Backend experience building production systems at scale.
• Strong proficiency in Java 17+ and Spring Boot; Kotlin a plus.
• Distributed systems with microservices and event-driven architectures.
• Relational databases like MySQL/PostgreSQL; Redis a plus.
• Cloud-native delivery with AWS, Docker and Kubernetes; CI/CD and observability.
• Payments/fintech experience with correctness and auditability.
• Strong testing mindset across unit/integration/contract tests.
• AI-native mindset and willingness to adopt AI coding tools.
• Ownership, clear communication, and fast delivery in a growth environment.
• Bonus: familiarity with digital assets, domain-driven design, or workflow engines.

Responsibilities

• Design, build and run high-throughput backend services for crypto pay-ins, pay-outs and transfers.
• Build and evolve clean, versioned APIs used by merchants and partners.
• Ensure reliability with idempotency, transactional outbox, retries and dead-letter handling.
• Improve performance and scalability in hot paths and service-to-service calls.
• Modernise core services with modular boundaries while keeping payments live.
• Design and build event-driven workflows with clear contracts between domains.
• Collaborate with Product, Compliance and Operations to deliver new capabilities.
• Own production services, monitor, on-call, incident response and root-cause analysis.
• Apply AI-native tooling and share learnings with the team.

Skills

Backend experience

Java 17+

Spring Boot

Kotlin

Kafka/SQS

Relational DBs

Redis

AWS

Docker

Kubernetes

CI/CD

Observability

Payments/fintech

Testing mindset

AI-native mindset

Ownership/communication

Digital assets (bonus)

Domain-driven design (bonus)

Workflow orchestration (bonus)

Tools

Kafka

SQS

Job description

BVNK is seeking a Senior Software Engineer (Backend) to join our Crypto Payments Orchestration team. You will design, build and scale high-throughput backend services that handle crypto pay-ins, pay-outs and cross-currency flows, while aligning with our AI-native approach.

You'll own services end to end, partner with Product and Compliance, and help modernise core systems with modular design. Applicants should have strong Java 17+ and Spring Boot experience, plus Kafka/SQS, relational DBs, AWS,