Senior Backend Engineer — Node.js/TypeScript

Job Description

What You’ll Do

• Design and build production backend services using Node.js and TypeScript
• Build secure, well-defined and versioned REST APIs
• Implement authentication, authorization and role-based access controls
• Build tenant-aware services and enforce multi-tenant authorization boundaries
• Develop investor, issuer/property, onboarding, transaction, portfolio, wallet and marketplace backend workflows
• Integrate external KYC/KYB and identity providers
• Integrate with Fireblocks custody/wallet infrastructure
• Build payment, banking and other external service integrations
• Implement secure webhook ingestion, callback processing and external/internal ID mapping
• Design idempotent transaction workflows and protect against duplicate processing
• Implement retries, exponential backoff, rate-limit handling, reconciliation and failure recovery
• Build asynchronous workflows using queues/background jobs
• Implement Redis-based caching and other distributed application patterns where appropriate
• Work with the PostgreSQL Database Engineer on schema requirements, transaction boundaries and query patterns
• Use Prisma ORM while understanding when database-specific approaches are required
• Protect PII and financial data in transit and at rest
• Implement structured logging, monitoring and application observability
• Write unit, integration and API tests
• Participate in code reviews and establish maintainable backend engineering standards
• Work with AWS-based infrastructure and containerized deployments

Required Qualifications

• 4–8+ years of professional backend software engineering experience
• Strong recent production experience with Node.js and TypeScript
• Strong experience designing and implementing production REST APIs
• Experience building authentication and authorization systems, including JWT/OAuth and RBAC
• Hands-on experience integrating complex third-party APIs involving:
• authentication/token management
• webhooks
• callbacks
• rate limits
• retries
• failure recovery
• Experience implementing idempotency for transactional APIs or workflows
• Solid PostgreSQL knowledge and experience working with relational databases
• Experience with Prisma, TypeORM or comparable ORM technology
• Experience with asynchronous/background processing
• Production experience with AWS and Docker
• Strong understanding of application security, secrets management and protection of sensitive data
• Experience with Git-based workflows, automated testing and CI/CD

Are you interested in this position?
Apply by clicking on the “Apply Now” button below!
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