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Sr. Software Engineer (.NET)

Cognizant

Company : Cognizant

Location : Portsmouth, NH

Posted Date : 15 September 2025

Job Type : Other

Category : Software Development

Occupation : Software Engineer

Job Details

Senior Software Engineer (.NET)

We are seeking a Senior Software Engineer (.NET) to join our dynamic technology team. In this role, you will lead the development of high-performance applications using the latest .NET technologies. Your expertise will help drive innovation and deliver scalable solutions that meet complex business needs.

You'll work closely with cross-functional teams, including product managers, developers, and stakeholders, to design, build, and optimize software systems. This hybrid position offers flexibility, with days onsite and remote. We support a healthy work-life balance through a variety of wellbeing programs and flexible work arrangements, which may evolve based on project and client requirements.

Work model: Hybrid (2 days Onsite; 3 Remote).

The working arrangements for this role are accurate as of the date of posting. This may change based on the project you're engaged in, as well as business and client requirements. Rest assured; we will always be clear about role expectations.

Roles/Responsibilities:

  • Lead the design and development of robust applications using ASP.NET Core Web API to meet business requirements.
  • Oversee the integration of SQL databases to ensure efficient data management and retrieval.
  • Provide technical expertise in .Net Core to enhance application performance and scalability.
  • Collaborate with cross-functional teams to gather and analyze requirements for new features.
  • Ensure code quality and maintainability through regular code reviews and best practices.
  • Develop and maintain technical documentation to support ongoing development and deployment.
  • Troubleshoot and resolve complex technical issues to minimize downtime and ensure smooth operations.
  • Mentor and guide junior developers to foster a culture of continuous learning and improvement.
  • Stay updated with the latest industry trends and technologies to drive innovation.
  • Coordinate with project managers to ensure timely delivery of projects within scope and budget.
  • Implement security best practices to protect applications and data from potential threats.
  • Optimize application performance through regular monitoring and tuning.
  • Contribute to the company mission by delivering high-quality software solutions that enhance user experience.

Qualifications:

  • Possess a deep understanding of ASP.NET Core Web API and its application in real-world scenarios.
  • Demonstrate proficiency in SQL for effective database management and operations.
  • Exhibit strong expertise in .Net Core to develop scalable and efficient applications.
  • Show excellent problem-solving skills and the ability to troubleshoot complex issues.
  • Display strong communication skills to collaborate effectively with team members.
  • Maintain a proactive approach to learning and adapting to new technologies.

Skillset: .Net Core, Web API development, SQL, NoSQL, Azure, Entity Framework, LINQ, jQuery and JavaScript.

Salary and Other Compensation: Applications will be accepted until September 14, 2025. The annual salary for this position is between $65,000 - $90,000 depending on experience and other qualifications of the successful candidate.

This position is also eligible for Cognizant's discretionary annual incentive program, based on performance and subject to the terms of Cognizant's applicable plans.

Benefits: Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:

  • 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

Disclaimer: The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.

What We Offer:

  • The chance to work with impact. Here, you're empowered to bring your biggest thinking to help our company and clients improve everyday life.
  • Ownership over your career. Stay at the top of your game through our award-winning learning and development ecosystem. And when your ambitions change or we offer new opportunities, we help you pivot by providing reskilling, on-the-job learning and guidance to find new roles that might be a better fit.
  • The opportunity to thrive on a high caliber team with heart. We celebrate each other's experiences and perspectives and promote a sense of belonging through our affinity groups and diversity and inclusion initiatives.
  • A comprehensive total rewards package, including a competitive salary and pension plan with matching contributions.
  • Flexible health and financial benefits to support you and your eligible dependents from day one.
  • True work-life balance. Be at your best through paid time off, flexible work arrangements, volunteering opportunities, social events, and so much more.

About us Cognizant is one of the world's leading professional services companies, transforming clients' business, operating, and technology models for the digital era. Our unique industry-based, consultative approach helps clients envision, build, and run more innovative and efficient businesses. Headquartered in the U.S., Cognizant (a member of the NASDAQ-100 and one of Forbes World's Best Employers 2024) is consistently listed among the most admired companies in the world.

Other employment-related information Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, provincial or local laws.

If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email CareersNA2@cognizant.com with your request and contact information.

Language requirements vary depending on roles, but we ask that all candidates have basic English proficiency for company-wide communications purposes. For roles based in Quebec, professional English proficiency is required, as you'll deliver services to and collaborate with stakeholders outside the province who may not speak French.

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