Senior Node.js/NestJS Engineer for FinTech Platform

DashDevs; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

Days off 20 first year

Competitive compensation

Friendly team and environment

Clearly described business processes

Management updates & Q&A sessions

Carryover vacation to next year

Job summary

DashDevs is seeking a Senior Backend Engineer (NodeJS/NestJS) to join an outsourced team working on a production financial platform for business accounting and financial management. You’ll focus on extending and improving an existing system with banking integrations, transaction processing, reconciliation, and analytics.

The role requires strong NestJS and TypeScript skills, willingness to work with Kotlin/Spring Boot in parts of the stack, and a proven track record in FinTech or banking

Qualifications

• 5+ years of backend development with production experience in TypeScript and Node.js
• Strong knowledge of NestJS
• Familiar with Kotlin and Spring Boot for BFF and services
• Experience with REST APIs and maintainable service design
• Strong SQL, data modeling, and database performance skills
• Hands-on with messaging or event-driven architectures
• Understanding of distributed-systems challenges
• Experience with automated testing, Git, CI/CD
• Understanding of authentication, authorization, and secure handling of data
• Ability to work independently in a complex codebase
• Experience in FinTech, banking, accounting, or payment systems

Responsibilities

• Develop backend features with TypeScript and NestJS within the existing architecture
• Extend BFF layer with APIs and business logic for new financial features
• Design REST APIs contracts using OpenAPI
• Integrate new functionality without breaking current behavior
• Coordinate between NestJS and Kotlin services and external systems
• Build integrations with banking providers and accounting systems (e.g., Odoo)
• Develop transaction processing and reconciliation workflows
• Implement event-driven communication and async workflows
• Ensure data consistency across APIs, services and analytics
• Implement tenant-aware authorization and access control
• Apply idempotency, safe retries, and proper transaction boundaries
• Improve observability with logging, metrics, health checks and alerts
• Investigate production issues and implement sustainable fixes
• Write clean, testable code with unit/integration tests for financial logic
• Participate in code reviews, CI/CD, and API/architecture documentation
• Take features from analysis to release with cross-functional teams
• Identify risks and communicate estimates clearly

Skills

TypeScript

Node.js

NestJS

Kotlin

Spring Boot

REST APIs

SQL

Event-driven

CI/CD

Testing

Tools

OpenAPI

PostgreSQL

AWS SQS/SNS

Temporal

Keycloak

Cerbos

Job description

DashDevs is seeking a Senior Backend Engineer (NodeJS/NestJS) to join an outsourced team working on a production financial platform for business accounting and financial management. You’ll focus on extending and improving an existing system with banking integrations, transaction processing, reconciliation, and analytics.

The role requires strong NestJS and TypeScript skills, willingness to work with Kotlin/Spring Boot in parts of the stack, and a proven track record in FinTech or banking