Skip to main content

Senior C#/.NET Developer

00068164292

About the role

As a Senior .NET Developer, you will make an impact by developing and maintaining high-performing enterprise applications, APIs, and integration solutions that support critical business operations. You will be a valued member of the team and will work collaboratively with product owners, architects, QA teams, and business stakeholders to deliver scalable and reliable software solutions.

In this role, you will:

  • Design, develop, and maintain server-side applications using C# and .NET (Core/Framework) following clean architecture and SOLID principles.
  • Build and maintain RESTful APIs, including versioning, pagination, error handling, documentation, and secure authentication/authorization.
  • Develop middleware and integration components connecting internal services with external systems.
  • Implement and support integration solutions using synchronous and asynchronous communication patterns while ensuring resiliency, logging, tracing, and monitoring.
  • Write unit and integration tests and participate in code reviews to ensure code quality and maintainability.
  • Troubleshoot production issues, perform root cause analysis, and implement performance and reliability improvements.
  • Collaborate with cross-functional teams to refine requirements, estimate work, and deliver functionality within Agile sprint cycles.
  • Maintain technical documentation for APIs, integrations, configurations, and operational procedures.

Work Model

We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role's business requirements, this is a hybrid position requiring 3 days per week in a client or Cognizant office in Toronto, Ontario, Canada. Regardless of your working arrangement, we are here to support a healthy work-life balance through our various 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.

What You Need to Have to Be Considered

  • 6+ years of experience developing applications with C# and .NET (Core/Framework).
  • Strong experience in server-side development.
  • Hands-on experience building and maintaining RESTful APIs.
  • Experience developing middleware and integration solutions.
  • Strong understanding of Object-Oriented Programming (OOP), Design Patterns, and SOLID principles.
  • Ability to write clean, efficient, and maintainable code.
  • Strong problem-solving and troubleshooting skills.
  • Ability to work effectively in a collaborative Agile environment.
  • Must be legally authorized to work in Canada without the need for employer sponsorship, now or at any time in the future.

These Will Help You Stand Out

  • Experience working with relational databases.
  • Familiarity with MongoDB.
  • Knowledge of Redis.

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.

Total Compensation

We regularly assess market data to ensure we offer a competitive compensation package for our associates. The base salary for this position ranges between CAD $61,650 - CAD $102,500 per year. Where the successful candidate may fall within the range depends on relevant education, work and/or management experience and other business-related and job-necessary qualifications.

This position is also eligible for Cognizant's discretionary annual performance-based bonus, as well as benefits that support your physical, mental, and financial wellbeing.

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.

Benefits that help you thrive and grow

Our benefits program is built with you in mind—so you can enjoy a fulfilling, balanced and healthy life.

a blue line drawing of a plant with leaves

Financial wellbeing

We regularly review market data to ensure compensation reflects the value you bring. Your benefits extend beyond pay and may include retirement plans, financial education, etc.

Stay Healthy Midnight Blue RGB

Physical and mental health

We empower you to prioritize your wellbeing through paid time off, flexible working where possible, healthcare plans, counselling, our Mental Health Allyship program and more. 

Build The Career You Want Midnight Blue RGB

Your career, your way

With 350,000+ roles at Cognizant, you’ll have opportunities explore new technologies, industries and locations—and build the skills you need to grow your career.

Making A Meaningful Impact Midnight Blue RGB

Real-world impact

Think about the biggest brands you rely on. Chances are, they rely on us to help strengthen their business. Here, you’ll turn bold ideas into solutions that improve lives everywhere.

Your path to Cognizant

Here’s what you can expect from our hiring process. Please keep in mind that it may vary by role and location. Explore our FAQs to learn more.

a person sitting at a table using a laptop

Step 1: Apply to the right opportunity

Find an open role that matches your skills and career goals and show us why you’re the person for the job. Don’t see the right opportunity? Consider joining our Talent Community.

a person holding a tablet and talking on the phone

Step 2: Connect with your recruiter

If one of our recruiters sees a fit, they’ll set up a short intro call to learn more about you and how your experiences and skills match the role.

a person smiling at a table with a laptop

Step 3: Show off your skills

If you and our team would like to continue the process, you’ll interview with our hiring team. Some roles may also require technical assessments and/or client interviews.

a group of people sitting around a table

Step 4: Decision time

Our team will then review each candidates’ potential to succeed in the role. This step may take some time because we want to find the right fit for both you and us—but you can count on us to keep you updated.

a person with long blonde hair wearing a white shirt with orange and purple flowers
What I value most about working at Cognizant is the opportunity to innovate while delivering real business impact. My role allows me to combine strategy, technology, and collaboration across global teams, which makes every project meaningful. The support for continuous learning and innovation has been instrumental in my growth.
Beata Ogorzala Senior Event Manager
1 (2)
Cognizant has one of the best learning ecosystems you can ask for. From sponsored certifications to training platforms to mentorship, we have all that we need to grow.
Debashish Mishra SAP MM Developer
2
Cognizant offers me more than a job; it offers a community. We support each other, collaborate across borders and celebrate wins together. If you’re looking for a culture that values flexibility, diversity and growth, this is the place to be.
Laura Reynaud Lead Counsel
3
When I first joined, I was quiet and hesitant to share my thoughts. The leadership programs and the mentoring I’ve received have helped me find my voice and grow as a leader.
Sujatha Gopalakrishnan Portfolio Delivery Lead
4
I’ve had the chance to work on impactful projects and shadow colleagues, all while getting involved in internal initiatives. The world is your oyster at Cognizant—you just need to take advantage of it!
Lucas Hoffman Consultant

Haven't yet found the right opportunity?

Get the latest updates on job opportunities, recruitment events and company news—tailored just for you!

Be in the know