Full stack Lead Developer (Backend-Focused) (.NET Core+ReactTS)

QAAgility Technologies; Bengaluru; On-site; INR 900,000 - 1,300,000; Full time

Job summary

QAAgility Technologies is seeking an experienced Fullstack Lead Developer (backend-focused) in Bengaluru. The role emphasizes building scalable .NET Core backends, REST APIs, and secure file handling, with strong ReactTS exposure as a plus.

Docker, SignalR, testing, and AI-assisted coding are integral to daily work. You will collaborate with cross-functional teams to deliver high-quality solutions across cloud platforms, databases, and real-time communication channels, guiding junior engineers

Qualifications

• 4-6+ years of professional experience in .NET Core and C#.
• Experience designing REST APIs and working with databases.
• Strong knowledge of Docker, SignalR, and real-time communication.
• Hands-on frontend experience with React/TypeScript is a plus.
• Familiarity with AI-assisted coding tools is a plus.

Responsibilities

• Design, develop, and maintain scalable backend services using .NET Core and C#.
• Build and enhance REST APIs and database interactions.
• Implement real-time features with SignalR and manage sockets when required.
• Containerize applications with Docker and ensure reliable deployments.
• Collaborate with front-end, QA, DevOps, and product teams; participate in code reviews.

Skills

.NET Core

C#

API design

Unit testing

Docker

Real-time (SignalR)

Education

Bachelor’s degree in Computer Science or related field

Tools

React/TypeScript

Entity Framework Core

Git

Job description

Role: Full stack Lead Developer (Backend-Focused) (.NET Core+ReactTS)

Experience: 4-6+ Years

Job Overview:

We are looking for an experienced Fullstack Lead Developer, backend-focused, with 4-6+ years of experience in .NET Core, C#, and modern backend development practices. The ideal candidate should be able to code backend services, work with databases, and build APIs, with strong preferred experience on the React frontend as well & not just familiarity with it. The role requires hands-on experience with Docker, file upload and handling, network sockets, and SignalR, along with a solid understanding of code coverage and unit testing. Comfort using AI-assisted coding tools as part of day-to-day development is also a key attribute.

Key Responsibilities:

• Design, develop, and maintain scalable, secure, high-performance backend applications using .NET Core and C#.
• Work with databases and build/enhance/maintain REST APIs.
• Develop features involving file upload, processing, and secure file handling.
• Build real-time communication solutions using SignalR and manage network socket programming as required.
• Build integration with WhatsApp, Viber, KakaoTalk, SMS, Email, WeChat, Telegram, FBmessenger, Instagram, Voice and similar channels using Infobip &/or Twilio sdks & journeys and downstream with EHRs/EMRs/CRMs using FHIR/APIs/webhooks and secure transport.
• Write unit, integration, and end-to-end tests using frameworks like xUnit, NUnit, or MSTest.
• Implement and monitor code coverage using appropriate tools (e.g., Coverlet, dotCover).
• Containerize applications and services using Docker, ensuring reliable builds and deployments across environments.
• Code and enhance frontend features in React.js/TypeScript as needed.
• Use AI-assisted coding tools (e.g., GitHub Copilot) as part of the standard development workflow, including code generation and reviews, and apply AI assistance across the SDLC where useful.
• Proactively debug issues, analyze logs, and perform root cause analysis to resolve bugs or performance bottlenecks.
• Collaborate with front-end developers, QA, DevOps, and product teams to ensure timely and quality delivery.
• Participate in code reviews, design discussions, and continuous improvement of coding standards and architecture; guide the Developer-level engineer on the team

Required Skills & Qualifications:

• 4-6+ years of professional experience in .NET Core and C#.
• Hands-on experience working with databases and building APIs.
• Solid experience with network sockets and SignalR for real-time features.
• Proficiency in file upload, file I/O, and handling large/binary files securely.
• Deep understanding of unit testing, integration testing, and measuring code coverage.
• Strong hands-on experience in creating and managing Docker containers.
• Good knowledge of REST APIs, asynchronous programming, and dependency injection.
• Well-versed in using AI tools (e.g., GitHub Copilot) for assistive coding and across the SDLC used day-to-day, not just aware of.
• Familiar with Git and version control workflows.
• Experience with Entity Framework Core or other ORM tools.

Nice to Have:

• CI/CD pipelines.
• cloud platforms like Azure .
• Exposure to message queues such as Azure Service Bus.
• Knowledge of log aggregation and monitoring tools.

Soft Skills:

• Strong communication and collaboration skills.
• A team player who adapts quickly and works well in cross-functional teams.
• Proactive in identifying issues, suggesting solutions, and driving them to closure.
• Committed to quality, ownership, and continuous improvement.

Educational Qualification:

• Bachelor’s degree in Computer Science, Information Technology, or a related field.