Senior Backend Engineer — Identity & Vehicle Platform

Cognizant; Mangum (NC); On-site; USD 125,000 - 131,000; Full time

Benefits offered by this job

Medical/Dental/Vision/Life Insurance

Paid holidays & PTO

401(k) plan

Job summary

Cognizant is seeking a Senior Backend Developer to design, implement and refactor core platform services supporting federated authentication and a multi-entity vehicle management system. This role focuses on integrating Firebase-based identity restructuring and modernizing API layers to support scalable account, vehicle, and profile relationships.

You will work across data modeling, APIs, authentication integration, and middleware, with emphasis on secure, multi-tenant architecture and reliable

Qualifications

• Strong backend development experience (Java/Spring Boot or similar).
• REST API design and refactoring.
• Relational database design, schema migrations and indexing.
• Authentication/authorization frameworks (JWT OAuth federated identity).
• Experience with middleware components (interceptors/filters and request contexts).
• Familiarity with cloud-based identity providers (Firebase Auth/OAuth).
• Experience with multi-tenant/hierarchical data models.

Responsibilities

• Design and refactor core platform services for federated authentication and multi-entity vehicle management.
• Refactor APIs to support account-vehicle-profile relationships.
• Implement data migrations, indexing and performance optimizations.
• Integrate Firebase authentication and federated identity patterns.
• Ensure security, data integrity and backward compatibility across services.

Skills

Java/Spring Boot

REST API design

Relational database design

Authentication/authorization

Federated identity

Cloud identity providers

Data modeling

Middleware/interceptors

Multi-tenant data modeling

Tools

Firebase

OpenAPI

Keycloak

Job description

Cognizant is seeking a Senior Backend Developer to design, implement and refactor core platform services supporting federated authentication and a multi-entity vehicle management system. This role focuses on integrating Firebase-based identity restructuring and modernizing API layers to support scalable account, vehicle, and profile relationships.

You will work across data modeling, APIs, authentication integration, and middleware, with emphasis on secure, multi-tenant architecture and reliable