Senior .NET Full Stack Developer Lead; React​/AWS

About the Role

As a Senior .NET Full Stack Developer Lead, you will make an impact by designing, developing, and delivering scalable enterprise applications using .NET, React, AWS, and SQL Server technologies. You will be a valued member of the engineering team, working collaboratively with client stakeholders, business partners, cross-functional teams, and offshore delivery teams to drive high-quality software solutions and successful project outcomes.

This is an on-site role based on business requirements in Hartford, CT. Regardless of work arrangement, we support a healthy work–life balance through our wellbeing programs.

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.

Please note:

A few of our roles may require in-person interviews at Cognizant offices or client locations, depending on project or client needs.

Candidate must be legally authorized to work in the United States without the need for employer sponsorship, now or at any time in the future.

• Lead the design, development, and maintenance of enterprise applications using .NET Core, React, AWS, SQL Server, and related technologies.
• Collaborate with client stakeholders and cross-functional teams to define technical solutions that align with business objectives and architectural standards.
• Drive technical delivery, ensuring high-quality, scalable, and secure software solutions that meet performance and reliability requirements.
• Provide technical leadership through code reviews, mentoring, troubleshooting, and implementation of development best practices.
• Partner with offshore teams to coordinate delivery activities, manage priorities, and ensure timely, high-quality project execution.

• Strong experience developing enterprise applications using .NET Core / C# and modern software development frameworks.
• Hands‑on expertise with React.js and JavaScript‑based front‑end development.
• Experience designing and deploying cloud-based solutions using AWS.
• Strong knowledge of SQL Server, including database design, optimization, and performance tuning.
• Proven experience leading technical teams, managing both functional and technical work streams, and driving successful project delivery.
• Excellent communication, stakeholder management, and client‑facing skills.
• Experience collaborating effectively with distributed and offshore delivery teams.
• Strong understanding of software engineering best practices, including code reviews, testing, debugging, and application performance optimization.

• Experience with in the Life and Annuities Insurance domain.
• Knowledge of modern cloud‑native architectures and application modernization initiatives.
• Experience defining scalable software architectures and technical roadmaps.
• Ability to identify opportunities for process improvement and continuous delivery optimization.
• Proven track record of building strong client relationships and serving as a trusted technical advisor.
• Passion for mentoring developers and fostering a collaborative engineering culture.

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 things to this role.

The annual salary for this position is between $64,000 – $115,000 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.

• 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

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.

Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued g each interview.

Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.