Sr Fullstack Developer

Description At Sequoia Connect , we are a Talent-First Technology Ecosystem that redefines how elite professionals interact with the global digital landscape. We move beyond traditional models to act as a catalyst for the top 1% of global talent, connecting human potential with complex industrial execution. By joining our inner circle, you are not simply taking a position; you are aligning with a strategic partner dedicated to updating your "Human OS" and accelerating your growth through world-class, high-impact projects. We are currently partnering with a global IT powerhouse that represents the connected world through innovative, customer-centric experiences. As a USD 6 billion organization and one of the top 7 IT service providers globally, our client empowers over 1,200 global customers—including several Fortune 500 companies—to "Rise™." With a massive network of 163,000+ professionals across 90 countries, they are at the absolute forefront of digital transformation, leveraging next-generation technologies such as 5G, AI, Blockchain, and Quantum Computing. This is your chance to thrive in a workplace recognized as one of the most sustainable corporations in the world. You will join an environment that values innovation and societal impact, working on end-to-end digital transformation projects for global leaders. If you are a driven professional looking for global career opportunities and exposure to high-impact projects within an international network of expertise, this is where you belong. We are currently searching for a Senior Backend / Sr Fullstack Developer (.NET Core / C#): The Challenge (Responsibilities) Design, develop, and maintain high-performance .NET Core backend applications and REST APIs. Develop business logic using clean, scalable, and maintainable coding practices. Design and optimize SQL Server databases, queries, stored procedures, and indexes. Apply SOLID principles, Clean Architecture, Design Patterns, and Dependency Injection. Design and work with Microservices and distributed systems. Implement authentication, authorization, API security and exception handling. Work with messaging services such as Azure Service Bus, RabbitMQ, or Kafka. Develop unit/integration tests and participate in code reviews. Troubleshoot complex application, database, and production issues. Work with Azure cloud services, CI/CD, and DevOps practices. Collaborate with frontend, QA, DevOps, and architecture teams. Your Profile (Requirements) Strong hands-on experience in C# and .NET Core/.NET. .Net Core Web API and REST API development. Hands-on experience with Azure Functions, App Service, Service Bus, Key Vault & Application Insights. Entity Framework Core & LINQ. Strong SQL Server experience and query optimization. Clean/Layered Architecture & Dependency Injection. Microservices and distributed systems concepts. Async/Await and asynchronous programming. JWT / OAuth and API security. Git and CI/CD Pipelines. High-Performance Mindset: Resilience, emotional intelligence, and a focus on agile delivery. Technologist DNA: A deep understanding of the difference between "coding" and "engineering." Desired Nice to have expertise in Node JS, Azure Databricks, Typescript, Redux, JavaScript, Bootstrap, PostgreSQL. Power BI dashboard and PBI Service integrations. Experience on Gen AI Tools, Open AI API integration and Analytics. Familiarity with cloud-native foundations or AI coding assistants. Languages Advanced Oral English: For seamless collaboration with global teams. Advanced Spanish. Work Arrangement We value flexibility to support your lifestyle. This position is available as: Remote If you meet these qualifications and are pursuing new challenges, start your application on our website to join an award-winning employer. Explore all our job openings | Sequoia Career’s Page : https://www.sequoia-connect.com/careers/ Requirements Strong hands-on experience in C# and .NET Core/.NET .Net Core Web API and REST API development Hands-on experience with Azure Functions, App Service, Service Bus, Key Vault & Application Insights Entity Framework Core & LINQ Strong SQL Server experience and query optimization Clean/Layered Architecture & Dependency Injection Microservices and distributed systems concepts Async/Await and asynchronous programming JWT / OAuth and API security Git and CI/CD Pipelines