Sr. Software Engineer (C++ & C#)
Cognizant· enterprise· IT Services· Aug 23, 2026 · 2mo agoPosted 65 days ago
Lake Forest, California, United States
In office
Full-time
Senior
$145K–$185K est.
5+ years exp
Before you apply
Ghost Signal:
Open 65 days.
Job description
*Please note, this role is not able to offer visa transfer or sponsorship now or in the future*
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, 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 www.cognizant.com.
About Cognizant’s IoT Practice:
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.
Job Summary:
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.
Key Responsibilities:
• 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 DevOps, Git, and Agile/Scrum practices.
Required Qualifications:
• 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.
Preferred Skills:
• 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.
Compensation: - $105 K to $120 K + 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 9/13/2026
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
#LI-CT1
About Cognizant:
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, bridging the gap between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, drive tangible outcomes and keep global enterprises ahead in a fast-changing world. See how at cognizant.ai or @cognizant.
Additional employment information
Compensation 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 ID during each interview.
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, state 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 for roles based in the Americas or CareersIndia2@cognizant.com for roles based in India.
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Benefits
Benefits detected in the listing.
Dental
Vision
401(K)
Paid Time Off
Parental Leave