Tech Lead C# / .NET & React Developer – Full Stack
Experience Required: 8-10 Years
Location: [Hybrid / Onsite]
Type: Full-Time
Role Summary:
We are seeking an accomplished Lead C# / .NET Core & React Full Stack Developer with strong expertise in microservices architecture, distributed systems, and modern front-end frameworks React. This role focused on building scalable, high-performance backend & frontend systems and enabling a cross-functional team to deliver robust full-stack solutions.
The ideal candidate is highly skilled in C# language features, .NET Core runtime capabilities, and containerized microservices, with strong experience in cloud-native development, DevOps, and code quality enforcement along with the frontend development in React & NextJS . He should Own production stability, support escalated issues, and guide root cause analysis and resolution.
Key Responsibilities
Backend Development – C# & .NET Core
- Architect and develop headless, service-oriented applications using C# and .NET Core .
- Design distributed microservices , Background Services, and Worker Services.
- Expertise on backend services with async programming & Memory management
- Build domain-centric business logic with Clean Architecture.
- Use SOLID principles, Design pattern and Command patterns for loosely coupled code.
- Preferred to have experience with event-driven workflows using message queues like (RabbitMQ, Azure Service Bus, Kafka).
- Create reusable SDK, Libraries for internal services consumption.
- Experience resolving code smells, vulnerabilities, and application security flaws.
Data & Persistence Layer
- Use Entity Framework Core and/or Dapper to implement efficient, secure data access strategies.
- Work with SQL Server, PostgreSQL, or NoSQL solutions like MongoDB or Redis.
- Optimize database performance with indexing, query tuning, and connection pooling.
Testing & Observability
- Write unit test cases for better test coverage .
- Working experience with Splunk (logging), AppDynamics, JSON/XML, Caching, Performance Analysis & Profiling,
Cloud, DevOps, and CI/CD
- Containerize services using Docker and deploy to Kubernetes or Azure Container Apps.
- Design and maintain CI/CD pipelines with Azure DevOps, GitHub Actions, or GitLab.
- Good to have experience on IaC tools (Terraform, Bicep, ARM) to provision infrastructure.
- Experience with source code repositories tools, Bitbucket, GitHub.
Front-End Experience with React
- Hands-on knowledge and experience with developing enterprise-level web applications with a strong focus on ReactJS
- Understanding of NextJS ,Node.js development and debugging tools
- Experience with CDD based UI development.
- Knowledge of JavaScript, CSS, HTML, and jQuery
- Experience consuming REST APIs using Fetch, Axios, etc. and asynchronous data handling
- Integrate with backend APIs using token-based auth (JWT/OAuth2).
- Implement state management via NgRx, Redux, or Context API.
- Experience with both CSR & SSR
- Experience with maintaining web vitals .
Leadership & Managerial Responsibilities
- Lead technical design discussions, define service boundaries, and maintain architecture documentation.
- Review code for quality, performance, and maintainability; enforce best practices across teams.
- Mentor team members on C#/.NET Core, system design, and debugging complex distributed systems.
- Participate in sprint planning, backlog grooming, and agile ceremonies.
- Collaborate with product managers, QA, DevOps, and stakeholders to ensure timely and high-quality delivery.
Required Skills & Experience
- 5-10 years of software development experience, with at least 3-4+ years focused on microservices in C# and .NET Core.
- Deep understanding of C# language internals, memory management, async/await, parallelism, and diagnostics.
- Experience building microservices and APIs.
- Hands-on with Docker, Kubernetes, cloud-native development (Azure, AWS).
- Expertise in unit testing, mocking frameworks, and observability tools.
Preferred Qualifications
- Experience in event-driven architectures, distributed transactions.
- Familiarity with gRPC and API versioning strategies.
- Experience working in regulated or high-security industries (e.g., finance, healthcare).
This position can be based in any of the following locations:
GurgaonCurrent Guardian Colleagues: Please apply through the internal Jobs Hub in Workday
Top Skills
What We Do
Who we are
Guardian makes a difference in the lives of people when they need us most. With over 160 years of stability and fiscal integrity, we are a trusted resource to generations of families and business owners, inspiring well-being and helping build financial confidence.
Today, we stand behind 29 million consumers, helping them prepare and plan for a bright future for themselves and their families. We help business owners care for their employees. And we help people recover and thrive in times of unexpected loss.
As a modern mutual insurance company, we believe in driving value beyond dividends. We invest in our colleagues and are building a progressive, innovative and inclusive culture. We uplift individuals and communities through thoughtful social and environmental programs.
What we stand for
In 1860, a community of immigrants joined together to insure and protect their businesses and families. They were guided by powerful ideals that we’ve continued to stand behind and evolved throughout the years: we do the right thing, we believe people count, we courageously shape the future together, and we go above and beyond for the people we serve.
Guardian employees embrace and live by these values every day. They remind us to put people at the heart of all we do so that we can help protect what matters most to you. Want to help bring these values to life? Join us for a rewarding career and the opportunity to shape the future.
Disclosures:
Financial information concerning Guardian as of December 31, 2022, on a statutory basis: Admitted assets = $76.0 billion; liabilities = $67.2 billion (including $55.0 billion of reserves); and surplus = $8.8 billion. Dividends are not guaranteed. They are declared annually by Guardian’s Board of Directors.
Guardian® is a registered trademark of The Guardian Life Insurance Company of America. © Copyright 2023 The Guardian Life Insurance Company of America 2023-156184 Exp. 5/25
