Senior Dotnet Developer

Job Details:

Job Role: .Net Core Developer

Job Type: Permanent

Job Location : London, UK-Hybrid 2days/Week

Client : Quinnox

Job Description:

Job Summary:

We are seeking a Senior Developer with deep expertise in .NET 8, SQL Server, REST APIs, API Security, and OAuth. The ideal candidate will be responsible for designing and developing secure, scalable, and high-performance applications while ensuring best practices in architecture, security, and API development.

Key Responsibilities:

1. Architecture & Design:

• Design and implement scalable and maintainable .NET 8 solutions.
• Define architectural best practices for Microservices, Event-Driven Architecture, and Domain-Driven Design (DDD).
• Develop and optimize database solutions using SQL Server, ensuring high performance and scalability.
• Establish best practices for REST API design and development.

2. API Development & Security:

• Design and secure REST APIs using OAuth 2.0, OpenID Connect, and JWT authentication.
• Address OWASP Top 10 vulnerabilities in applications and APIs.
• Implement API security best practices, including rate limiting, encryption, and authentication mechanisms.
• Work with API Gateway solutions to manage authentication, authorization, and traffic control.

3. Cloud & DevOps (Nice to Have - Azure/AWS):

• Experience with cloud platforms such as Azure or AWS (e.g., API Gateway, Identity Management, Serverless Computing).
• Familiarity with CI/CD pipelines for automated deployments.
• Basic knowledge of Infrastructure as Code (IaC) (Terraform, Bicep, or CloudFormation).

4. Performance & Optimization:

• Optimize .NET applications for high performance, scalability, and low latency.
• Implement caching strategies using Redis or similar technologies.
• Conduct load testing, performance tuning, and query optimization for databases and APIs.

5. Leadership & Collaboration:

• Work closely with cross-functional teams including development, DevOps, and security teams.
• Provide technical leadership and mentorship to development teams.
• Conduct code reviews and ensure adherence to architectural best practices.

Required Skills & Experience:

• 12+ years of experience in software development and architecture.
• Expertise in .NET 8, C#, ASP.NET Core, and Web API development.
• Strong experience with SQL Server, query optimization, indexing, and performance tuning.
• Hands-on experience with REST API design & development.
• Deep understanding of API Security, OWASP guidelines, OAuth 2.0, and OpenID Connect.
• Experience with JWT authentication and API Gateway solutions.
• Knowledge of Microservices, CQRS, and Event-Driven Architecture.

Nice-to-Have (Not Mandatory):

• Experience with Azure or AWS cloud services.
• Familiarity with NoSQL databases (MongoDB, CosmosDB).
• Exposure to GraphQL, gRPC, or WebSockets.
• Experience with Kafka, RabbitMQ, or Azure Service Bus.
• Certifications in Azure, AWS, Security, or .NET.