Cognizant’s Application Delivery practice is seeking a highly qualified .NET Developer(Onsite) with experience developing and building high-performing, scalable, enterprise applications. You will be part of a digital software team that works on high-demand applications. Our engineers have a passion for high-quality, reliable and maintainable code. You will work side by side with product managers, designers, and clients, making decisions together in order to quickly deliver valuable working software to clients and their users. Our engineers are agile and retrospective, and not afraid to identify what we’re doing wrong, so we can fix it, and what we’re doing right, so we can improve on it. Above all, we judge success by the success of our team and the happiness of our customers.
Cognizant’s Application Delivery If you’re like us, you’ve got big ideas. At Cognizant, we’re exploring new ideas every day. We help industry leading companies reinvent their business models and innovate products that create new value—by connecting people with things, insights and experiences. Cognizant digital engineering designs, engineers and delivers digital products and experiences that drive digital-first business models. We offer the most comprehensive digital engineering expertise and client-centric methodology for sustainable innovation.
Location: Toronto, ON
Experience Required: 6+ years
You must be legally authorized to work in Canada without the need for employer sponsorship, now or at any time in the future.
Cognizant will not sponsor work authorization for this role.
Role: Senior C#/.NET Developer – Roles & Responsibilities
• Design, develop, and maintain server-side components using C# and .NET (Core/Framework) following clean architecture and SOLID principles.
• Build and maintain RESTful APIs (design, versioning, pagination, error handling, and documentation) and ensure secure authentication/authorization.
• Develop middleware and integration components to connect internal services with external systems (message formats, adapters, routing, transformation, and orchestration).
• Implement and consume integrations using common patterns (sync/async), ensuring resiliency (timeouts, retries, circuit breakers) and observability (logging, tracing, metrics).
• Write unit/integration tests and support automated CI/CD pipelines; ensure code quality through reviews and static analysis.
• Troubleshoot production issues, perform root-cause analysis, and deliver performance/reliability improvements.
• Collaborate with product owners, architects, and QA to refine requirements, estimate work, and deliver features within sprint timelines.
• Produce and maintain technical documentation for APIs, integrations, configuration, and runbooks.
Required Qualifications
Candidates should have over 6+ years of hands on experience in below skills
MUST Have skills - C# Developer: C#, .net experience, Server side development, REST APIs, Middleware integration,
Nice To have Skills- Relational databases, MongoDB, Redis
Salary and Other Compensation:
Applications will be accepted until June 15th, 2026.
The annual salary for this position is between CAD 80,000- CAD 91,000 base 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
· Medical/Dental/Vision/Life Insurance
· Paid holidays plus Paid Time Off
· Long-term/Short-term Disability
· Paid Parental Leave
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.
Travel: 0-5%
Why Choose Cognizant?
It takes a lot to succeed in today’s fast-paced market, and Cognizant Technology Solutions has become a leader in the industry. We love big ideas and even bigger dreams! We stand out because we put human experiences at the core. Our associates enjoy robust benefits and training opportunities from our industry-recognized, award-winning Academy team. You will have access to hundreds of technical trainings to keep your skillsets fresh and have opportunities to acquire certifications on the newest technologies.
Everything we do at Cognizant we do with passion—for our clients (fortune 100 companies), our communities, and our organization. It’s the defining attribute that we look for in our people.
If you love ambiguity, excited by change, and excel through autonomy, we’d love to hear from you!
About Cognizant Application Delivery Well-designed ,software transcends digital technology, going beyond the fulfillment of basic requirements to focus instead on human needs. Within Cognizant Digital Engineering, we help clients develop software products that transform human insights into tangible, production-ready digital solutions. We also work with our clients to scale their native cloud applications. Using insights from the lived experiences of our consumers, we seamlessly replace traditional service strategies with engaging, precise, and direct digital applications. Designing phenomenal software is vital to success in the digital economy—and we understand that a human-centric approach is key to this design.
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Über Cognizant
Cognizant (NASDAQ: CTSH) i ist ein Technologiedienstleister und Entwickler von KI-Lösungen. Wir schlagen die Brücke zwischen KI-Investitionen und echtem unternehmerischem Mehrwert, indem wir ganzheitliche Full-Stack-KI-Lösungen für unsere Kunden entwickeln. Mit unserer fundierten Branchen-, Prozess- und Engineering-Expertise integrieren wir die spezifischen Anforderungen von Unternehmen passgenau in Technologiesysteme. So entfalten wir das menschliche Potenzial, erzielen greifbare Ergebnisse und sichern globalen Unternehmen in einer sich rasant wandelnden Welt den entscheidenden Vorsprung. Erfahren Sie mehr unter cognizant.ai oder @cognizant.
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