Senior Backend Engineer (Java/Kotlin) - Remote, Cloud APIs

Cognizant; Lincoln (NE); Remote; USD 63,000 - 100,000; Full time

Benefits offered by this job

Medical Insurance

Paid Holidays/PTO

401(k)

Disability Insurance

Parental Leave

Employee Stock Purchase Plan

Job summary

Cognizant is seeking a Senior Backend Engineer (Java/Kotlin) to design, build, and support scalable backend platforms and APIs powering core business applications. You will collaborate with engineering, product, security, and partners to deliver secure, cloud-native solutions and act as a technical advisor for integration initiatives.

Responsibilities include designing and maintaining microservices with Java/Kotlin, implementing REST and GraphQL, ensuring API security with OAuth 2.0, and driving

Qualifications

• 8+ years of software engineering experience with Java and/or Kotlin.
• Hands-on experience building RESTful APIs and microservices.
• Strong proficiency with Spring Boot and modern backend practices.
• Experience with OAuth 2.0 and API security controls.
• Experience with cloud platforms such as AWS or GCP.
• Proficiency with containerization and orchestration technologies, including Docker and Kubernetes.
• Experience building and maintaining CI/CD pipelines and working in Git-based development environments.
• Hands-on experience with automated testing frameworks such as JUnit, Mockito, or similar tools.
• Strong understanding of distributed systems and API integrations.
• Demonstrated ability to troubleshoot and resolve complex production issues.
• Excellent communication, collaboration, and stakeholder management skills.

Responsibilities

• Design, develop, and maintain scalable backend services and microservices using Java and/or Kotlin.
• Serve as a technical consultant to internal and external stakeholders, providing guidance on API capabilities and integration best practices.
• Collaborate with partner teams to onboard, troubleshoot, and resolve integration challenges involving REST APIs, GraphQL services, and OAuth-based authentication.
• Gather and analyze business and technical requirements and translate them into secure, scalable technology solutions.
• Create and maintain technical documentation, integration guides, and sample applications to support developers and partners.
• Enhance application performance, reliability, monitoring, and observability in cloud-native environments.
• Implement and support automated testing frameworks, CI/CD pipelines, and deployment processes.
• Partner with product, engineering, and security teams to ensure solutions meet compliance, security, and operational standards.
• Troubleshoot and resolve complex production issues within distributed systems and microservice architectures.
• Contribute to continuous improvement initiatives, driving engineering excellence and operational efficiency.

Skills

Java/Kotlin backend development

REST API design

GraphQL services

Spring Boot

OAuth 2.0 & API security

AWS or GCP

Docker & Kubernetes

CI/CD pipelines

JUnit/Mockito

Distributed systems

Troubleshooting production issues

Communication & collaboration

Tools

Git

AWS

GCP

Docker

Kubernetes

Job description

Cognizant is seeking a Senior Backend Engineer (Java/Kotlin) to design, build, and support scalable backend platforms and APIs powering core business applications. You will collaborate with engineering, product, security, and partners to deliver secure, cloud-native solutions and act as a technical advisor for integration initiatives.

Responsibilities include designing and maintaining microservices with Java/Kotlin, implementing REST and GraphQL, ensuring API security with OAuth 2.0, and driving