Senior .NET Core Full Stack Developer | Desarrollador Full Stack .NET Core Senior

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Location: Monterrey (Hybrid - 3 days per week at Infosys Office)

We are seeking a highly experienced and skilled Senior .NET Core Full Stack Developer to design, develop, and maintain robust and scalable enterprise-level applications. This role requires deep expertise in C#, .NET Core, ASP.NET Core, and Angular, strong engineering best practices, and frequent client interaction. Candidates must also be comfortable working with some legacy Microsoft technologies when required by the account.
Key Responsibilities
• Develop high-quality, maintainable code for both new features and existing systems using C#, .NET Core, ASP.NET Core Web API, and Angular
• Lead the design and development of complex features and components across the entire application stack
• Translate functional requirements into high-quality backend and front-end implementations
• Write and maintain comprehensive unit tests, and support integration and automated testing practices
• Apply SOLID principles, design patterns, and scalable architecture approaches
• Mentor junior developers and conduct peer and group code reviews
• Engage proactively with clients to clarify requirements and provide updates
• Collaborate with cross-functional teams to define requirements, timelines, and deliverables
• Troubleshoot, debug, and optimize applications for performance, scalability, and reliability
• Participate in deployment and maintenance of enterprise-grade applications
Required Skills and Experience
• 5-8+ years of professional software development experience with a strong focus on full-stack development
• Deep expertise in C#, .NET Core, ASP.NET Core, and .NET Framework 4.x
• Strong experience with Angular (TypeScript, RxJS, component architecture, state management)
• Hands-on experience building SOAP Web Services, REST APIs, and enterprise integrations
• Experience with WinForms for legacy components when needed
• Strong experience with SQL relational databases, especially SQL Server or Oracle (3+ years)
• Experience writing automated tests using xUnit, NUnit, MSTest, or similar frameworks
• Strong proficiency in writing clean, maintainable C# and SQL code
• Understanding of automated testing practices and the testing pyramid (unit, integration, contract)
• Hands-on experience with at least one major cloud platform (Azure, AWS, or GCP)
• Strong understanding of SOLID principles, common design patterns, and scalable software architecture
• Experience working in Agile environments and familiarity with CI/CD and DevOps practices
• Excellent English communication skills (written and verbal)
• Strong analytical and problem-solving skills
• Ability to quickly learn and adapt to new technologies
• Bachelor's degree in Computer Science, Engineering, or related field
Nice to Have Skills
• Experience with microservices architecture
• Experience with non-relational databases
• Experience with Docker and Kubernetes
• Familiarity with CI/CD pipelines (Azure DevOps, GitHub Actions, Jenkins)
• Knowledge of asynchronous programming and message queues
• Experience with secrets management tools (AWS Secrets Manager, Azure Key Vault, GCP Secret Manager, HashiCorp Vault)
Desired Skills and Qualities
• A proactive, ownership-driven, and results-oriented mindset
• High emotional intelligence enabling effective collaboration
• Openness to giving and receiving feedback constructively
• Comfortable interacting frequently with clients and stakeholders
• Ability to work independently and as part of a team
• Passion for continuous learning and staying up to date with modern and legacy .NET technologies