Our client represents the connected world, offering innovative and customer-centric information technology experiences, enabling Enterprises, Associates, and Society to Rise™. They are a USD 6 billion company with 163,000+ professionals across 90 countries, helping 1279 global customers, including Fortune 500 companies. They focus on leveraging next-generation technologies, including 5G, Blockchain, Metaverse, Quantum Computing, Cybersecurity, Artificial Intelligence, and more, on enabling end-to-end digital transformation for global customers. Our client is one of the fastest-growing brands and among the top 7 IT service providers globally. Our client has consistently emerged as a leader in sustainability and is recognized amongst the ‘2021 Global 100 Most sustainable corporations in the World by Corporate Knights. We are currently searching for a Sr Fullstack Developer (.NET + react) : Responsibilities: Develop and maintain web-based solutions for internal and customer-facing applications using the Microsoft .NET stack and ReactJS. Write high-quality, clean code following SOLID design principles and standard coding guidelines. Perform peer code reviews (PRs) to ensure technical alignment and continuously improve the codebase. Collaborate with Product and Business teams to translate feature requirements into technical implementation. Build native Cloud-based solutions utilizing Azure and modern distributed system patterns. Design and manage data persistence using relational database models (SQL) and NoSQL solutions. Ensure application quality by creating test scripts, performing unit testing, and supporting the building of automation scripts. Integrate CI/CD pipelines , utilizing static analysis and security tools to address quality metrics and code coverage. Mentor junior team members and provide technical support for customer requests and incident response. Requirements: Senior-level proficiency in C#, ASP.NET MVC (4.0+), and ReactJS . Modern Web Stack: Strong experience with WebAPI, HTML5, CSS3, JavaScript, and NodeJS . Architecture: Solid understanding of SOLID design principles and distributed systems . API Frameworks: Working knowledge of REST APIs and familiarity with GraphQL and gRPC . Data & Persistence: Proficient in SQL programming (Stored Procedures, ADO.NET, Entity Framework) and NoSQL databases. Cloud & DevOps: Knowledge of Azure cloud services and a good understanding of CI/CD pipelines , static analysis, and security scanning tools. Tooling: Expertise in Visual Studio, VS Code, SSMS, and GIT . Quality Focus: Proven ability in unit testing, PR reviews, and following quality code practices. Desired: Professional certifications (Microsoft/Azure). Active personal GitHub repositories or participation in pet projects. Languages Advanced Oral English. Native Spanish. Note: Fully remote If you meet these qualifications and are pursuing new challenges, Start your application to join an award-winning employer. Explore all our job openings | Sequoia Career’s Page: https://www.sequoia-connect.com/careers/ . Requirements: Senior-level proficiency in C#, ASP.NET MVC (4.0+), and ReactJS . Modern Web Stack: Strong experience with WebAPI, HTML5, CSS3, JavaScript, and NodeJS . Architecture: Solid understanding of SOLID design principles and distributed systems . API Frameworks: Working knowledge of REST APIs and familiarity with GraphQL and gRPC . Data & Persistence: Proficient in SQL programming (Stored Procedures, ADO.NET, Entity Framework) and NoSQL databases. Cloud & DevOps: Knowledge of Azure cloud services and a good understanding of CI/CD pipelines , static analysis, and security scanning tools. Tooling: Expertise in Visual Studio, VS Code, SSMS, and GIT . Quality Focus: Proven ability in unit testing, PR reviews, and following quality code practices.