Senior Software Engineer - Backend

ARIVE provides an integrated loan origination, point-of-sale, pricing, and lender marketplace platform for independent mortgage originators. The Senior Software Engineer – Backend will design, build, support, and scale cloud-native backend services and data systems, while owning production reliability, security, performance, and collaboration with product, frontend, DevOps, and global engineering teams.

Responsibilities:

• Architect, develop, and maintain scalable RESTful APIs and backend services using Node.js and TypeScript, powering mission-critical loan origination workflows
• Design efficient database schemas and optimize queries and migrations across PostgreSQL and MongoDB; implement caching strategies (e.g., Redis) for high-throughput workloads
• Build, test, and deploy containerized applications with Docker; deploy and operate services on AWS (EC2, Lambda, RDS, S3, SQS)
• Partner with DevOps to strengthen CI/CD pipelines, infrastructure-as-code, and observability (logging, metrics, tracing, alerting)
• Champion system reliability, performance, and secure coding best practices — our platform handles sensitive borrower data, and we operate in a SOC 2 Type II environment where security is a first-class engineering concern
• Partner with our Support team as an engineering point of contact for escalated production issues at scale — triage, root-cause, and resolve end-to-end, then land the permanent fix, alerting, and runbooks so issues don’t recur. Drive performance optimization across the backend and data layers
• Coordinate daily with our India-based engineering team — handoffs, code reviews, and design alignment — keeping core hours of 7:00 AM – 4:00 PM PT to maximize morning overlap
• Lead technical design sessions and code reviews, mentor mid-level engineers, and contribute to product planning and architectural roadmaps

Requirements:

• Candidates must be authorized to work in the United States on a full-time basis. Visa sponsorship is not available for this position
• 5+ years of hands-on backend engineering experience with most, if not all, of the following: Node.js, TypeScript, PostgreSQL, MongoDB, AWS, and Docker
• Strong command of RESTful API design, microservices and event-driven architectures, and message queues (e.g., SQS, Kafka, RabbitMQ)
• Deep experience with both relational and NoSQL data modeling, query optimization, indexing strategies, and zero-downtime migrations
• Solid habits around automated testing (unit, integration, E2E), code review, and CI/CD; you ship fast without breaking things
• Working knowledge of secure SDLC practices — authN/authZ patterns (OAuth 2.0, JWT), OWASP Top 10, and handling sensitive data in a regulated environment
• Experience with monitoring and APM tooling (e.g., Datadog, CloudWatch, New Relic) and a bias toward measuring before optimizing
• You've served as an engineering point of contact for support escalations and stay calm and methodical when debugging live production systems under pressure
• You leverage AI coding tools to maximize your speed and output — and are excited to help build AI-powered capabilities into the platform
• Proactive, self-directed, and comfortable with ambiguity; you thrive in a fast-paced, high-ownership environment and communicate clearly across teams
• FinTech, mortgage, or other regulated-industry experience; familiarity with LOS/POS platforms or the loan origination lifecycle is a strong plus