Full Stack (.NET) Senior Developer

About The Role

As a Full Stack (.NET) Senior Developer, you will make an impact by designing and developing scalable, secure, and innovative enterprise applications. You will be a valued member of the Tax Innovation Technology team, collaborating with developers, architects, and cross-functional stakeholders to deliver high-quality solutions that drive efficiency for our Tax Line of Service (LoS) engagement teams and clients.

In This Role, You Will

Contribute to full-stack development across backend, frontend, APIs, databases, and cloud platforms.

Build and scale .NET (C#/ASP.NET Core) applications using Clean Architecture and CQRS.

Develop modular monoliths and microservices, integrating multi-agent workflows and streaming updates.

Participate in Agile ceremonies, pair/mob programming, and code reviews to ensure high-quality, secure code.

Implement CI/CD pipelines and collaborate with support teams for deployments and issue resolution.

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 2–3 days a week in a client or Cognizant office in Buenos Aires, Argentina. 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

4+ years of software development experience (ideally 6+ years with the listed tech stack).

Proficiency in .NET Core/.NET 6+ and .NET 8, ASP.NET Core, C#, and Entity Framework Core.

Experience with Angular (v16+), NgRx, and Single-SPA microfrontends.

Strong understanding of RESTful APIs, GraphQL, and SQL Server optimization.

Familiarity with SignalR, MassTransit, Azure Service Bus/EventHubs.

Hands-on experience with HTML5, TypeScript, JavaScript, CSS3, Bootstrap, and DevExtreme.

Knowledge of Clean Architecture, CQRS (MediatR), and event-driven systems.

Experience with Azure DevOps, CI/CD automation, Docker, and Azure cloud services.

These Will Help You Stand Out

Experience with GenAI tools (GitHub Copilot, Cursor) and AI engineering frameworks.

Knowledge of Retrieval-Augmented Generation (RAG), vector/hybrid search, and Microsoft Semantic Kernel.

Familiarity with Power BI REST APIs and data integration with warehouses/lakehouses.

Strong background in testing (xUnit, Jasmine/Karma, E2E), Agile methodologies, and TDD.

Experience with JWT Bearer tokens, OpenAM, and Git/GitHub version control.

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.

Benefits

• A career in one of the largest and fastest growing IT services providers worldwide.
• Ongoing support and funding with training and development plans.
• Opportunity to work for leading global companies.
• Our work environment is diverse, collaborative and inclusive. We create conditions for everyone to thrive.
• A highly competitive salary and great benefits, such as OSDE for you and your primary family group, annual bonus and many other benefits that we are going to share during the selection process.