Senior .NET & MongoDB Engineer — Remote (Canada)

Cognizant; Halifax; Remote; CAD 70,000 - 95,000; Full time

Benefits offered by this job

Discretionary annual bonus

Wellbeing benefits

Job summary

Cognizant is seeking a Senior Application Support & Development Engineer in Canada to lead end-to-end development and production support across a large enterprise software landscape. The role emphasizes hands-on work in C#, .NET, Azure, and MongoDB, with strong incident and lifecycle management.

The ideal candidate will own incidents, drive root-cause analysis, and collaborate across API, cloud, integration, and database layers, while supporting CI/CD and modernization efforts.

Qualifications

• 7+ years of overall experience in application development, maintenance, and production support.
• Strong hands-on expertise in C#, .NET Framework, .NET Core / .NET 6+, ASP.NET Core, and RESTful Web APIs.
• Strong hands-on experience with Microsoft Azure services, cloud-native application development, deployment, monitoring, and troubleshooting.
• Strong hands-on experience with MongoDB, including data modeling, aggregation pipelines, indexing, query optimization, and performance troubleshooting.
• Demonstrated experience supporting enterprise applications in production environments.
• Experience managing incidents, service requests, defects, changes, and operational tickets through closure.

Responsibilities

• Design, develop, enhance, and maintain enterprise applications using C#, .NET Core / .NET 6+, ASP.NET Core, REST APIs, Azure services, and MongoDB.
• Build scalable backend services and APIs while following secure coding, performance, and maintainability standards.
• Maintain a support-first and customer-focused mindset while balancing development priorities.
• Provide production support and troubleshoot application, API, database, cloud, integration, and deployment issues.
• Respond effectively to production priorities and work within incident, change, release, and security processes.
• Take end-to-end ownership of incidents, service requests, defects, enhancements, and operational tasks.
• Perform root-cause analysis for recurring issues and implement corrective and preventive solutions.
• Develop and optimize MongoDB queries, aggregation pipelines, indexes, and data access patterns.
• Configure, deploy, monitor, and support workloads hosted on Microsoft Azure.
• Support CI/CD pipelines, automated deployments, release activities, and post-production validations using Azure DevOps and Git.
• Participate in Technology Lifecycle Management activities, including framework upgrades, package upgrades, patching, and platform modernization.
• Support vulnerability remediation, dependency upgrades, secure configuration, and compliance-related activities.
• Perform software installation, uninstallation, configuration, environment maintenance, and operational readiness activities as needed.
• Create and maintain technical documentation, support procedures, knowledge articles, release notes, and operational runbooks.

Skills

C#

ASP.NET Core

.NET Framework

.NET Core / .NET 6+

REST APIs

MongoDB

Microsoft Azure

Production support

Tools

Docker

Kubernetes

Azure DevOps

PowerShell

Job description

Cognizant is seeking a Senior Application Support & Development Engineer in Canada to lead end-to-end development and production support across a large enterprise software landscape. The role emphasizes hands-on work in C#, .NET, Azure, and MongoDB, with strong incident and lifecycle management.

The ideal candidate will own incidents, drive root-cause analysis, and collaborate across API, cloud, integration, and database layers, while supporting CI/CD and modernization efforts.