Sr. Software Engineer; C++ & C Onsite

Please note, this role is not able to offer visa transfer or sponsorship now or in the future

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, is ranked 195 on the Fortune 500 and is consistently listed among the most admired companies in the world.

Learn how Cognizant helps clients lead with digital at

Intelligent, IoT-enabled products will soon result in the proliferation of data and disrupt virtually all industries. To be successful, both large and small companies must leverage IoT capabilities by designing modern products that fundamentally connect people with processes. Within Cognizant IOT, we engineer industry-aligned, IoT-enabled products that merge industry needs with human drivers. Our intelligent products will revolutionize experiences and result in exciting, transformative outcomes.

Without human-centered thinking, connected products are just standalone things—but with it, our modern connected products facilitate a unified way of life enjoyed by all.

We are looking for a Senior Software Engineer to develop and support advanced Digital Twin and Control System Simulation solutions used in industrial environments. This role involves designing, developing, and maintaining software applications that emulate plant control systems for testing, validation, troubleshooting, and operator training.

• Develop and maintain software applications using C++ and C#.
• Design and enhance client/server solutions, REST APIs, and distributed systems.
• Apply object-oriented design principles, design patterns, and software engineering best practices.
• Troubleshoot complex issues through debugging, root-cause analysis, and performance optimization.
• Develop automated tests and support quality initiatives using TDD and CI/CD methodologies.
• Collaborate with cross-functional teams using Azure Dev Ops, Git, and Agile/Scrum practices.

• 5+ years of software development experience.
• Strong expertise in C++, C#, Visual Studio, and Windows application development.
• Experience with REST APIs, networking concepts (L2/L3), and client/server architectures.
• Solid understanding of OOP/OOD, design patterns, automated testing, and version control systems.

• Experience with industrial automation, control systems, simulation software, or Digital Twin technologies.
• Exposure to cloud platforms such as Azure or AWS.
• Knowledge of operational technology (OT) environments and industrial networking.

Join a team building innovative software solutions that help industrial organizations improve operational readiness, system reliability, and workforce training through advanced simulation and Digital Twin technologies.

Base Pay + COLA and 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. Application will be accepted by 8/13/2026

• 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