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Salary
≈ $20k – $54k per year (Estimated)
Location
Remote (India)
Seniority
Senior · 10+ years exp

First seen by Alion on Oct 7, 2026.

Overview
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Firstsource turns domain expertise into AI-native operations, designing, building, and running industry workflows with accountability for outcomes, not effort.

Senior .NET Full Stack Developer

Location : Bangalore / Remote

Experience : 10 - 12 Years of experience

About The Role :

We are seeking a highly skilled and motivated Senior .NET Full Stack Senior Developer to join our growing technology team. The ideal candidate will have strong experience in developing scalable web applications using modern Microsoft technologies, with expertise in both backend and frontend development. This role requires hands-on experience in ASP.NET Core, modern front-end frameworks, REST APIs, database design, cloud deployment and modern software architecture principles, along with strong mentoring and collaboration skills.

Key Skills :

Backend Technologies (Mandatory) :

- .NET Core 8 or above

- C#

- ASP.NET Core

- Web API Development

- Microservices Architecture

- Worker Services / Windows Services

Frontend Technologies (Mandatory) :

- Blazor

- Razor

- JavaScript

- Angular 6+

- HTML5

- CSS3

- Bootstrap

Database Technologies :

- Microsoft SQL Server (Mandatory)

- PostgreSQL

- MySQL

- Entity Framework Core

- LINQ

Version Control & DevOps :

- Git

- Team Foundation Server (TFS)

- Azure DevOps

Cloud Technologies (Good to Have) :

- Experience With Microsoft Azure Services Including :

1. Load Balancer

2. DNS

3. Traffic Manager

4. Compute Services

5. Storage Services

6. Azure SQL

7. Cosmos DB

8. Azure Cognitive Search

9. Azure Functions

10. Logic Apps

11. API Management

12. Service Bus

13. Key Vault

14. Redis Cache

15. Azure Active Directory (AAD)

16. Application Insights

17. RabbitMQ

Key Responsibilities :

- Collaborate with business stakeholders and cross-functional teams to understand and define application requirements.

- Analyze system requirements and contribute to solution design and technical architecture.

- Develop detailed technical specifications and project documentation.

- Design, develop, test, and maintain scalable applications using ASP.NET Core 8 and related technologies.

- Build and consume RESTful APIs and microservices.

- Develop responsive user interfaces using Blazor, Razor, JavaScript, and Angular.

- Review, troubleshoot, debug, and optimize existing applications.

- Ensure code quality through best practices, code reviews, and unit testing.

- Maintain software documentation and operational procedures.

- Participate in Agile development processes and sprint activities.

- Collaborate with product managers, architects, and QA teams to deliver high-quality releases.

- Lead technical design discussions and contribute to architecture decisions.

- Optimize application performance, reliability, and scalability.

- Write clean, maintainable, testable code and enforce coding standards.

- Conduct code reviews and mentor junior/mid-level developers.

- Drive CI/CD adoption and DevOps best practices.

- Troubleshoot production issues and implement preventive improvements.

What We Value :

- Strong collaboration and teamwork.

- Customer-first mindset.

- Fast and disciplined execution.

- Continuous learning and improvement.

- Ownership, accountability, and a results-driven approach.

- Passion for delivering high-quality software solutions.

Required Skills & Qualifications :

- 10 - 12 years of hands-on software development experience.

- Strong expertise in C#, ASP.NET Core, .NET Framework/.NET 6+.

- Solid experience with Web API, RESTful services, Entity Framework, LINQ.

- Strong front-end experience with Blazor/Angular/React, JavaScript/TypeScript, HTML5, CSS3.

- Experience with SQL Server and database design/optimization.

- Good understanding of microservices architecture and design patterns.

- Hands-on with Azure/AWS, containerization (Docker), and orchestration concepts.

- Experience with Git, CI/CD pipelines, and agile methodologies.

- Strong debugging, problem-solving, and communication skills.

Preferred Qualifications :

- Experience with Kubernetes, messaging systems (RabbitMQ/Kafka), and caching (Redis).

- Exposure to domain-driven design (DDD) and event-driven architecture.

- Knowledge of security best practices (OAuth2, JWT, OWASP).

- Prior experience in leading modules/teams in enterprise projects.

- Relevant Microsoft/Azure certifications are a plus.

- Ability to work independently in a remote or hybrid setup.

Education :

- Bachelor's/Master's degree in Computer Science, Engineering, or related field

Skills

.Net, Full Stack, ASP, .Net Core, C#, WebAPI, Microservices Architecture, AngularJS, Javascript, TypeScript

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