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Senior .NET API Developer

00071199781

Senior .NET API Developer (Payments & Microservices)

About the Role

As a Senior .NET API Developer, you will make an impact by designing, developing, and supporting scalable, secure, and high-performance APIs and microservices that power critical payment and financial services applications. You will work closely with cross-functional teams to deliver enterprise-grade solutions using modern .NET technologies while contributing to architecture, API governance, and Agile delivery practices.

In This Role, You Will

  • Design and develop scalable, secure, and high-performance RESTful Web APIs and microservices using C#, .NET/.NET Core, ASP.NET Core Web API, and ASP.NET MVC Core following API-first design principles and industry best practices.
  • Own the end-to-end API lifecycle including API design, development, integration, testing, deployment, versioning, maintenance, and production support.
  • Design and implement authentication and authorization solutions using OAuth 2.0, OpenID Connect (OIDC), JWT bearer tokens, claims-based authorization, RBAC, and enterprise identity providers such as Microsoft Entra ID.
  • Develop and maintain microservices-based applications with a focus on resiliency, security, performance, observability, and scalability.
  • Implement API management capabilities using Apigee, including gateway integration, traffic management, security policies, and API governance.
  • Design, develop, and optimize database solutions, SQL queries, and stored procedures to support high-volume transactional systems.
  • Participating in Agile ceremonies including sprint planning, backlog refinement, design reviews, code reviews, and retrospectives.
  • Utilize Azure DevOps and Jira for source control, CI/CD, work item management, and release planning.
  • Collaborate with architects, product owners, and business stakeholders to deliver innovative and reliable solutions supporting cards and payments platforms.

Required Qualifications

  • 8+ years of experience developing enterprise applications using C#, .NET/.NET Core, ASP.NET Core Web API, and ASP.NET MVC Core.
  • Strong expertise in REST API development, API-first design methodologies, and microservices architecture.
  • Hands-on experience with API management platforms, preferably Apigee.
  • Experience implementing secure authentication and authorization using OAuth 2.0, OpenID Connect, JWT, and enterprise identity management solutions.
  • Strong SQL and relational database experience, including data modeling, query optimization, and stored procedure development.
  • Experience working in Agile/Scrum environments utilizing Azure DevOps and Jira.
  • Proven experience developing solutions within the cards and payments domain.

Preferred Qualifications

  • Experience designing distributed systems and cloud-native applications.
  • Knowledge of payment card processing, authorization, settlement, dispute, and chargeback workflows.
  • Experience implementing CI/CD pipelines and DevOps best practices.
  • Experience mentoring developers and contributing to architecture and technical design decisions.
  • Experience working within highly regulated financial services environments.

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 associates to work onsite 2-3 days per week in Halifax, Nova Scotia (NS). The remaining days may be worked remotely, subject to project, client, and business requirements.

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 and may change based on project, client, and business needs. Rest assured, we will always be clear about role expectations.

Salary and Other Compensation

The annual salary for this position is CAD $61,500 - $104,500, 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.

The salary range identified above is intended to provide potential candidates with a general understanding of the compensation associated with the position. Final compensation decisions are based on a variety of factors including experience, qualifications, skills, education, and geographic location.

Benefits

Cognizant offers a comprehensive and competitive benefits package designed to support the health, wellbeing, and financial security of our associates, including:

  • Comprehensive Medical, Dental, and Vision Coverage
  • Life Insurance and Disability Coverage
  • Employee Assistance Program (EAP)
  • Registered Retirement Savings Plan (RRSP) and applicable company programs
  • Paid Vacation and Personal Days
  • Paid Statutory Holidays
  • Employee Wellness Programs
  • Employee Resource Groups and Inclusion Networks
  • Learning and Development Programs
  • Certification and Professional Development Support
  • Employee Referral Program

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.

Applicants for US based positions must be currently authorized to work for any employer in the United States. The company is unable to provide employment-based immigration sponsorship for US based positions.

If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] for roles based in the Americas or [email protected] for roles based in India.

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.

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.

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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.

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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. 

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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.

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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.

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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.

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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.

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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.

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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.

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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.
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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!
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