Senior Backend Engineer (ASP.NET)

About Us
Tech9 is shaking up a 20-year-old industry, and we're not slowing down. Recognized by Inc. 5000 as one of the nation's fastest-growing companies, we are dedicated to building innovative, highly complex web applications. Our team is passionate about delivering quality software that meets the highest standards. We offer a 100% remote working environment with a collaborative and supportive team, allowing you to focus on what you do best.

Role Overview
We are looking for a Senior Backend Engineer with deep expertise in .NET technologies to join our growing team in India. This role focuses on designing and building scalable backend systems, RESTful APIs, and microservices, leveraging modern ASP.NET 8+, Azure cloud services, relational databases such as PostgreSQL and MSSQL, and Redis.

The ideal candidate is a strong problem solver, independent thinker, and team collaborator—someone who takes ownership, thrives in complex systems, and enjoys working in a distributed environment.

• Backend Development: Design, develop, and maintain backend systems and APIs using C# and ASP.NET.
   
• Microservices Architecture: Develop and deploy modular, scalable services using microservices patterns.
   
• API Design & Integration: Build secure and efficient RESTful APIs, integrating with internal and third-party systems.
   
• Database Management: Work with PostgreSQL and MSSQL to design schemas, optimize performance, and ensure data integrity.
   
• Cloud Development: Deploy and manage services in Microsoft Azure, leveraging cloud-native features such as Azure App Services, Functions, and SQL Database.
   
• Testing & Code Quality: Write and maintain unit tests to ensure code reliability; participate in peer code reviews and enforce clean code standards and SOLID principles.
   
• Performance Optimization: Utilize Redis to cache frequently accessed data. Identify and resolve bottlenecks to ensure high system performance and reliability.
   
• Security: Implement security best practices across APIs, data handling, and authentication/authorization flows.
   
• Collaboration: Work cross-functionally with frontend, QA, DevOps, and product teams to deliver end-to-end solutions.
   
• Continuous Improvement: Contribute to architectural discussions, propose enhancements, and reduce technical debt.
   

• Candidate must be located in India.
   
• 7+ years of professional experience in backend software development.
   
• Strong expertise in ASP.NET 6+ (preferably ASP.NET 8+) and C#.
   
• Proven experience with RESTful API development and microservices architecture.
   
• Proficiency with PostgreSQL, MSSQL, and Redis.
   
• Hands-on experience with Microsoft Azure cloud services and deployment pipelines.
   
• Experience writing unit tests using tools such as xUnit, NUnit, or MSTest.
   
• Familiarity with CI/CD pipelines, Git, and modern DevOps workflows.
   
• Excellent problem-solving, communication, and collaboration skills.
   
• Self-motivated, proactive, and comfortable working independently in a remote environment.
   

• Experience with containerization (Docker, Kubernetes).
   
• Familiarity with Azure Functions and other serverless architectures.
   
• Exposure to frontend technologies (React, Angular) is a plus.
   
• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
   

• Challenging Projects: Work on modern, scalable systems using the latest .NET and Azure technologies.
   
• Flexibility: 100% remote role based in India with flexible work hours.
   
• Collaboration: Partner with skilled engineers across global teams.
   
• Growth: Continuous learning opportunities and exposure to new cloud and architectural patterns.
   

Our hiring process is designed to be thoughtful, efficient, and focused on both technical ability and team fit:

1. 30-minute on-demand HireVue screening – Situational and behavioral questions to understand your ownership mindset, adaptability, and approach to collaboration.
    
2. 10-minute virtual Q&A with our recruiter – A conversation to clarify the role and answer your questions (not an interview).
    
3. 60-minute live technical interview 1– Conducted with a member of our engineering team.
4. 60-minute live technical interview 2 – Conducted with a member of our engineering team.
    
5. 30 minute chat with the hiring manager – To align on expectations and culture fit.
    
6. 30 minute client session – Final step to ensure alignment with client needs (if needed)