Senior Backend Engineer - Payments Platform - Remote Eligible

Backend Developer Role

You are full stack but you live on the backend. You care deeply about what happens when a payment fails, an API returns an unexpected response, or a queue backs up at 2am. You will own the backend services, payment workflows, and event-driven systems that sit at the core of our platform — and you will touch the frontend when the team needs it.

This is a high-intensity role at an early-stage company. This role will ask more of you than a typical engineering job — systems need to stay up, deadlines are real, and the team is small.

Responsibilities

• Production Node.js backend services and REST APIs — versioned, contract-stable, and hardened
• ACH payment workflows end-to-end — debits, credits, retries, failure handling, virtual account ledgering, and reconciliation
• Event-driven services using AWS SQS and webhooks for reliable asynchronous processing
• PostgreSQL schemas that support complex financial workflows with integrity under failure
• CI/CD contributions and test coverage that gives the team genuine confidence to ship
• Internal React dashboards and operational tooling when needed
• Design documentation, deployment runbooks, and scalability notes that you write because you are proud of the work — not because someone asked
• You will occasionally work directly with customers to support integrations, troubleshoot live workflows, and demonstrate platform capabilities — you are comfortable representing the product outside the codebase

Requirements

Must Have:

• 6–7 years engineering experience with a strong backend focus
• Production Node.js and REST API design
• Solid PostgreSQL — schema design, query optimization, data integrity
• AWS — Lambda, RDS, SQS, API Gateway, Secrets Manager
• OpenAPI / Swagger documentation experience
• Event-driven systems experience — queues, webhooks, retry and failure logic
• CI/CD pipeline experience and automated deployment workflows
• You obsess over API design, documentation, deployment, scalability, and observability
• Cross-functional communicator — comfortable working directly with Product, QA, DevOps, and business stakeholders
• Agile practitioner — sprint planning, backlog grooming, and code reviews are second nature
• End-to-end owner — you do not hand off, you follow through to production

Strong Plus:

• ACH payment workflows and NACHA operating rules
• Wire, debit card, and real-time payment rail experience beyond ACH
• Experience with Java, Spring frameworks, or similar enterprise backend frameworks
• Regulated fintech compliance — audit logging, idempotency, SOC 2
• NestJS or similar structured Node.js frameworks
• AI-assisted development tools — Claude, GitHub Copilot, Cursor
• Team lead experience with mentoring junior team members