Demo

Senior Software Engineer

Cognizant
Portsmouth, NH Full Time
POSTED ON 8/24/2026
AVAILABLE BEFORE 9/20/2026
Senior Software Engineer (JavaScript/TypeScript/AWS)

About The Role

As a Senior Full Stack Engineer, you will make an impact by designing, developing, and enhancing modern full stack applications that deliver exceptional user experiences and drive business value. You will work closely with product owners, architects, developers, and stakeholders to translate business requirements into scalable, secure, and high-performing solutions.

This position does not offer visa sponsorship. Candidates must be authorized to work without sponsorship now or in the future, including OPT, CPT, H1B or any other work authorization requiring employer sponsorship.

In This Role, You Will

  • Develop and enhance full stack applications using modern frontend and backend technologies.
  • Translate business requirements into robust technical solutions and scalable system designs.
  • Drive CI/CD automation, code quality initiatives, security best practices, and performance optimization efforts.
  • Collaborate with cross-functional teams in an Agile environment to deliver high-quality solutions.
  • Participate in code reviews, architectural discussions, and continuous improvement initiatives.
  • Troubleshoot and resolve application issues while ensuring reliability, maintainability, and scalability.

Work model (Remote)

This role requires candidates to be based in the United States and available to collaborate across distributed teams and client schedules.

We strive to provide flexibility wherever possible. Based on this role's business requirements, this position may require collaboration across multiple time zones and business functions.

Regardless of your working arrangement, we are here to support a healthy work-life balance through our various wellbeing programs.

What You Need To Have To Be Considered

  • Extensive professional experience developing full stack applications using JavaScript and TypeScript.
  • Strong understanding of modern software development principles and application architecture.
  • Experience developing and maintaining cloud-native applications on AWS.
  • Hands-on experience implementing and managing CI/CD pipelines using GitHub Actions.
  • Strong experience with Git/GitHub and modern version control practices.
  • Experience translating business requirements into technical designs and implementation plans.
  • Knowledge of software security best practices and application performance optimization.
  • Experience working in Agile development environments.
  • Strong problem-solving and troubleshooting skills.
  • Excellent communication and collaboration skills with technical and non-technical stakeholders.

These will help you stand out

  • Experience designing scalable cloud-native applications on AWS.
  • Experience implementing automated testing strategies within CI/CD pipelines.
  • Experience with microservices and distributed architectures.
  • Experience optimizing application performance and scalability.
  • Experience mentoring developers and contributing to engineering best practices.

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.

Compensation

The annual salary for this position ranges from $90,000 to $10,000, depending on experience and qualifications. This role is also eligible for Cognizant's discretionary annual incentive program, subject to performance and applicable plan terms.

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.

We're excited to meet people who share our mission and can make an impact in a variety of ways.

Don't hesitate to apply, even if you only meet the minimum requirements listed. Think about your transferable experiences and unique skills that make you stand out as someone who can bring new and exciting ideas to this role.

Salary.com Estimation for Senior Software Engineer in Portsmouth, NH
$142,397 to $172,145
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