Sr. DotNet Developer

Preferred Background: Product Company (SaaS / ERP / CRM / HRMS / LMS / FSM)

Role Summary

We are looking for a hands-on Senior Software Engineer (.NET) to take ownership of critical enterprise applications and contribute to architecture, development, deployment, API design, and technical decision-making. The candidate should be capable of understanding complex existing systems, guiding developers, reviewing code, resolving production issues, and delivering scalable software solutions.

Key Responsibilities

• Understand and own existing product architecture and codebase.

• Design, develop, and maintain enterprise-grade web applications and APIs.

• Participate in architecture and technical design discussions.

• Review code and ensure adherence to engineering standards.

• Drive application performance, security, maintainability, and scalability.

• Work closely with Product Managers, QA, Support, and Leadership teams.

• Troubleshoot and resolve critical production issues.

• Manage technical debt and modernization initiatives.

• Create and maintain technical documentation.

• Mentor developers and share technical knowledge.

• Ensure timely delivery of roadmap items and customer commitments.

• Contribute to engineering process improvements and best practices.

• Support customer deployments and production releases.

• Reduce dependency on individuals through documentation and knowledge sharing.

Technical Expertise Required

Backend Development

• C#

• ASP.NET MVC 5

• ASP.NET Core / .NET 8+

• ASP.NET Web API

• Entity Framework

• LINQ

• Dependency Injection

• Razor Pages

API Development & Integration

• Design and develop RESTful APIs.

• API-first application development.

• JSON request/response handling.

• API versioning and backward compatibility.

• JWT / Token-based authentication.

• Swagger / OpenAPI documentation.

• API security and performance optimization.

• Third-party API integration.

• Mobile App API integration experience.

Database

• Microsoft SQL Server

• Advanced SQL Query Writing

• Stored Procedures

• Functions and Views

• Database Design

• Query Optimization

• Performance Tuning

• Indexing and Execution Plan Analysis

Architecture

• MVC Architecture

• Layered Architecture

• Clean Architecture

• SOLID Principles

• Design Patterns

• Service-Oriented Architecture

• API-First Design

• Modular Application Design

• Database First Architecture

• Multi-layer Solution Structure

Frontend

• HTML5

• CSS3

• JavaScript

• jQuery

• Bootstrap

• DevExpress Components (Preferred)

Deployment & Operations

• IIS Hosting and Configuration

• Web Application Deployment

• Release Management

• Production Support

• Application Monitoring

• Root Cause Analysis

• Performance Monitoring

Version Control & Tools

• Git

• Azure DevOps / GitHub

• Visual Studio

AI-Assisted Development (Mandatory)

Hands-on experience using:

• GitHub Copilot

• ChatGPT

• Claude

• Cursor or equivalent AI development tools

Ability to leverage AI for:

• Faster development

• Code review

• Refactoring

• Documentation

• Unit test generation

• SQL optimization

• Debugging and troubleshooting

• Productivity improvement

Preferred Experience

• SaaS Product Companies

• ERP Products

• CRM Products

• HRMS Products

• LMS Products

• Field Service Management (FSM) Products

• Workflow Automation Products

• Multi-tenant Enterprise Applications

Additional Preferred Skills

• Background Services / Windows Services

• Microservices Architecture

• Redis Caching

• Docker

• RabbitMQ

• Azure or AWS Exposure

• CI/CD Concepts

Leadership Expectations

• Ability to independently own major product modules.

• Strong debugging and problem-solving skills.

• Experience working on customer-facing production systems.

• Good communication and stakeholder management skills.

• Experience guiding junior developers and reviewing code.

• Ability to estimate effort, identify risks, and propose technical solutions.

• Ownership mindset with focus on product quality and delivery.

Success Criteria

• Understand existing product architecture within 60–90 days.

• Independently handle major modules and releases.

• Improve code quality and engineering processes.

• Reduce dependency on individual team members through documentation and knowledge sharing.

• Deliver releases with minimal production issues.

• Contribute to long-term product architecture and modernization initiatives.

Candidate Rejection Criteria

• No ASP.NET Core experience.

• Weak SQL optimization knowledge.

• No API development experience.

• No production support experience.

• No architecture/design exposure.

• Unable to explain dependency injection or SOLID principles.

• No experience with AI-assisted development tools.

• Service-company-only experience without ownership of a product codebase may be given lower preference.