Mobility - Senior Backend Developer - Node.js / Middleware

Mobility - Senior Backend Developer - Node.js / Middleware

Job Description

• Take full ownership of assigned technical and development activities related to backend services, middleware development, integrations, change requests, enhancements, and project tasks.
• Design, develop, and implement scalable middleware services to enable secure communication between mobile applications and enterprise backend systems.
• Develop secure RESTful APIs using Node.js frameworks such as Express or NestJS.
• Design and implement authentication, authorization, and role-based access controls.
• Implement secure coding standards including encryption, token-based authentication (JWT/OAuth2), and API security best practices.
• Design and manage database schemas and data models across relational and non-relational databases.
• Integrate middleware services with enterprise systems (ERP, HR, Finance, SCM, etc.) and third-party platforms including payment gateways.
• Develop API documentation using Swagger/OpenAPI standards.
• Manage API versioning and source code control using enterprise version control practices.
• Deploy and manage applications across on-premise and/or cloud environments.
• Configure servers, manage environments, and implement CI/CD pipelines.
• Use process managers (e.g., PM2) and implement logging/monitoring mechanisms for production systems.
• Optimize applications for performance, scalability, and high availability.
• Support production systems including troubleshooting, debugging, and root cause analysis.
• Host and deploy web services as required.
• Document code and technical designs consistently throughout the development lifecycle.
• Generate and maintain design documents and technical specifications.
• Review technical solutions and participate in peer code/design reviews.
• Liaise with mobile developers, functional consultants, Business IS teams, and infrastructure/security teams during design, development, testing, and deployment phases.
• Review, fix, enhance, and develop backend components as required.
• Perform quality assurance and support testing for all deliverables.
• Follow HMC Service Management guidelines, adhering strictly to Change and Release Management processes and using the HMC ticket management system for deployments.

Experience and Skills

• Bachelor’s degree in Computer Science, Engineering, or related discipline.
• 5+ years of experience in backend development and middleware technologies.
• Strong hands-on expertise in Node.js development using frameworks such as Express and/or NestJS.
• Proven experience in designing and developing scalable RESTful APIs.
• Strong experience in implementing authentication and authorization mechanisms including JWT and OAuth2.
• Experience with encryption techniques and secure coding best practices.
• Strong database experience including design and management of:
• Oracle
• PostgreSQL
• MySQL
• MongoDB (preferred)
• Experience integrating with enterprise systems and third-party services including payment gateways.
• Experience in API documentation using Swagger/OpenAPI.
• Experience in deployment and environment management (on-premise and/or cloud).
• Experience implementing CI/CD pipelines.
• Knowledge of server configuration, process managers (e.g., PM2), and monitoring/logging tools.
• Strong understanding of performance tuning, scalability, and production support.
• Working knowledge of Oracle E-Business Suite / Oracle Fusion integrations will be considered a plus.
• Understanding of enterprise integration patterns and middleware architecture.

Job Type: Full-time

Pay: Up to QAR15,000.00 per month