Senior Full Stack Engineer (C#/.NET)

ABOUT PYYNE Pyyne is a modern technology consultancy engineering the next generation of digital products and services. At Pyyne, we believe in using technology to unlock business potential, create sustainable growth, and drive forward digital excellence. Our solutions range from advanced Software Engineering, Cloud, and Data & AI solutions. JOB SUMMARY Pyyne is seeking a Senior Full Stack Engineer with experience with C#/.NET and frontend TypeScript to work as a consultant out of our South American Office. This is a high-impact role for Pyyne as we expand our collaboration with one of our fastest growing North American SaaS clients. A successful candidate in this role is capable of writing rock solid code, as well as collaborating effectively with Business Analysts and Product Managers to ensure the requirements of the business are being met. KEY RESPONSIBILITIES - Embed within existing client development team and maintain high standards of code quality and development best practices - Develop, test, and deploy high-quality web applications and services using the .NET stack - Partner with business analysts to align on requirements, define technical scope, and drive project delivery — proactively manage risks, dependencies, and stakeholder expectations across the team - Write clean, scalable, and maintainable code following best practices and design patterns (e.g., SOLID principles, Dependency Injection) - Participate in all phases of the agile development lifecycle, including sprint planning, daily stand-ups, code reviews, and retrospectives - Troubleshoot, debug, and upgrade existing software to ensure optimal performance and security - Contribute to technical documentation for new and existing features - Mentor and support junior and mid level developers on the team Must Have Skills: - 5+ years of professional experience as a software engineer - 2+ years of experience with C#/.NET 8+ - Experience with .NET Framework 4.8 - Experience with Azure cloud - Experience with SQL Server and Relational Databases - Experience with TypeScript and frontend web frameworks like Angular - Strong OOP knowledge Nice to Have Skills: - Exposure to test automation tools such as XUnit, Moq, Autofac, Postman - Exposure to observability tools such as DataDog, Serilog, and OpenTelemetry - Exposure to containerization and Infrastructure as Code - Exposure to Domain Driven Design principles - Experience working with Azure Blob Storage and DocumentDB for unstructured and document-based data storage. - Openness to contributing, at least part of the time, to legacy projects in PHP and Angular - Exposure to GitHub Actions Benefits: - Flexible remote working environment. - Career development opportunities in a fast-growing company.