Senior Backend Engineer – Scalable Microservices & APIs

Prospex CRM; United States; Remote; USD 120,000 - 170,000; Full time

Job summary

Prospex CRM is seeking a Senior Software Engineer to lead backend design for a scalable procure-to-pay platform. You will architect and implement core services, APIs, and integration points with ERP systems, including Oracle Fusion, while collaborating with product, frontend, and DevOps teams to ensure performance and reliability.

You will mentor junior engineers, optimize MongoDB data structures, and drive monitoring and observability to maintain system health and customer satisfaction in a

Qualifications

• Extensive backend engineering experience in modern web platforms.
• Strong track record in building scalable microservices and RESTful APIs.
• Proficient in Node.js, Express/Nest, and MongoDB data modeling.

Responsibilities

• Lead backend system architecture and ensure security, reliability, and performance.
• Develop and maintain scalable backend services and APIs for a procure-to-pay platform.
• Collaborate with product, frontend, and DevOps to deliver robust integrations and data pipelines.
• DriveERP integrations, including Oracle Fusion, to extend platform capabilities.
• Optimize database queries and data storage for performance and scalability.
• Provide technical leadership, code reviews, and mentorship to junior engineers.
• Establish monitoring, logging, and alerting for system health and reliability.
• Contribute to backend technology strategy and stack decisions.

Skills

Backend development

Microservices

REST APIs

Node.js

MongoDB

System architecture

Mentorship

Monitoring & logging

Tools

Oracle Fusion ERP

GCP

Job description

Prospex CRM is seeking a Senior Software Engineer to lead backend design for a scalable procure-to-pay platform. You will architect and implement core services, APIs, and integration points with ERP systems, including Oracle Fusion, while collaborating with product, frontend, and DevOps teams to ensure performance and reliability.

You will mentor junior engineers, optimize MongoDB data structures, and drive monitoring and observability to maintain system health and customer satisfaction in a