Senior Full Stack Engineer — .NET/C#, Remote (US)

Cognizant Technology Solutions Corporation; Olympia (WA); Remote; USD 86,000 - 99,000; Full time

Benefits offered by this job

Medical/Dental/Vision/Life Insurance

Paid holidays plus Paid Time Off

401(k) plan and contributions

Long-term/Short-term Disability

Paid Parental Leave

Employee Stock Purchase Plan

Job summary

Cognizant Technology Solutions Corporation is seeking a Senior Full Stack Engineer – .NET & C# to design and develop scalable enterprise applications for healthcare payer operations, including eligibility, benefits, claims adjudication, billing, and provider services. You will collaborate with architects, product owners, analysts, quality engineers, and stakeholders to deliver secure, reliable, high-performing solutions.

Remote work option for US applicants.

Qualifications

• Bachelor’s degree in computer science, Information Technology, Engineering, or a related field.
• 7+ years of software development experience, including strong hands-on experience with Java/J2EE and Spring Boot.
• Advanced proficiency in .NET Framework and C#, with experience developing scalable and maintainable enterprise applications.
• Hands-on experience developing APIs, event-driven services, and middleware components using Node.js, REST APIs, and microservices architecture.
• Strong front-end development experience using React and Angular to build responsive enterprise web applications.
• Experience designing, implementing, and supporting microservices-based applications, including modular deployment, fault isolation, integration, and continuous delivery.

Responsibilities

• Design, develop, and maintain scalable enterprise applications using Java, Spring Boot, .NET Framework, C#, Node.js, React, and Angular to support healthcare payer workflows and claims processing.
• Develop secure, reusable microservices and REST APIs that enable seamless integration among internal applications, provider networks, third-party vendors, and external healthcare platforms.
• Build intuitive and responsive user interfaces that simplify workflows for operations teams, providers, and members while improving data accuracy and user experience.
• Integrate applications with Microsoft Azure services for hosting, data storage, identity management, monitoring, observability, and performance optimization.
• Collaborate with cross-functional product and business teams to translate healthcare payer requirements into technical designs that improve operational efficiency, regulatory compliance, and system reliability.
• Conduct code reviews, unit testing, and integration testing across Java, .NET, and JavaScript codebases to reduce defects and support stable production releases.
• Troubleshoot complex production issues across front-end, back-end, API, and database layers while improving application performance, availability, and response times.
• Document technical designs, application data flows, integration patterns, and healthcare payer business rules to support knowledge sharing and long-term maintainability.

Skills

Java/J2EE

Spring Boot

.NET Framework and C#

APIs

Node.js

REST APIs

React

Angular

Microservices

Microsoft Azure

Healthcare payer processes

Education

Bachelor's degree in computer science / IT / engineering / related field

Tools

Microsoft Azure

Job description

Cognizant Technology Solutions Corporation is seeking a Senior Full Stack Engineer – .NET & C# to design and develop scalable enterprise applications for healthcare payer operations, including eligibility, benefits, claims adjudication, billing, and provider services. You will collaborate with architects, product owners, analysts, quality engineers, and stakeholders to deliver secure, reliable, high-performing solutions.

Remote work option for US applicants.