N #2790
Applications open
Full-Time Job
Dot Net Developer
Sandhaanam
About the role
Role Summary We are looking for a hands-on .NET Developer with 3 to 5 years of experience in designing, developing, testing, and maintaining enterprise applications. The ideal candidate should have strong experience in C#, .NET/.NET Core, REST API development, and database development , along with practical exposure to GitHub Copilot or AI-assisted software development tools . The role requires someone comfortable working across the backend development lifecycle, from API and database design through coding, testing, code reviews, debugging, and production support.
Key Responsibilities
- Design, develop, enhance, and maintain applications using C# and .NET / ASP.NET Core .
- Build and maintain RESTful APIs and backend services.
- Design API contracts, request/response models, validations, exception handling, authentication, and authorization.
- Develop and optimize SQL queries, stored procedures, functions, database objects, and data-access components .
- Work with SQL Server and ORM/data-access technologies such as Entity Framework Core .
- Perform API integration with internal and external systems.
- Implement secure and scalable application components following coding and API development best practices.
- Write unit tests and integration tests and participate in debugging and defect resolution.
- Use Git and GitHub for source-code management, branching, pull requests, and code reviews.
- Use GitHub Copilot effectively for coding, refactoring, test generation, documentation, and developer productivity while validating generated code for correctness, security, and maintainability.
- Participate in technical design discussions, sprint planning, code reviews, and Agile ceremonies.
- Troubleshoot application/API/database performance issues and support application releases.
- Preferred candidate profile 3 to 5 years of professional software development experience.
- Strong hands-on development experience with: C# .NET / .NET Core / ASP.NET Core Web API / REST APIs Entity Framework Core Strong knowledge of API development , including: HTTP methods and status codes REST principles JSON API validation and error handling Authentication and authorization, such as OAuth 2.0 / JWT API documentation using OpenAPI / Swagger Good experience with Microsoft SQL Server and database development, including: SQL queries and joins Stored procedures and functions Database design Indexing Query optimization and performance troubleshooting Experience with Git/GitHub , pull requests, branching, merging, and code reviews.
- Practical development experience using GitHub Copilot or similar AI-assisted development tools.
- Understanding of SOLID principles, object-oriented programming, design patterns, and clean coding practices .
- Experience with unit testing frameworks such as xUnit, NUnit, or MSTest .
- Good debugging, troubleshooting, and problem-solving skills.
- Good to Have Experience with Azure services and cloud-hosted .NET applications.
- Knowledge of Azure DevOps or GitHub Actions for CI/CD.
- Experience with Docker and containerized applications.
- Understanding of microservices architecture .
- Experience with caching or messaging technologies such as Redis, Azure Service Bus, or RabbitMQ .
- Familiarity with application monitoring and logging using tools such as Application Insights or Serilog .
- GitHub Copilot Expectations Candidates should be able to demonstrate how they have used GitHub Copilot in real development work, for example: Accelerating C#/.NET implementation.
- Generating or improving unit tests.
- Refactoring existing code.
- Creating API models, validation, and repetitive implementation code.
- Assisting with SQL/query development.
- Generating technical documentation.
- Reviewing and validating AI-generated code rather than accepting suggestions without verification.
- Preferred Candidate A successful candidate will be a backend-focused .NET engineer who can independently take a requirement through API design database development implementation testing code review deployment/support , while using GitHub Copilot responsibly to improve development productivity and code quality.
Eligibility & process
Who can apply
Experience: 3-6 Yrs. Open to matching qualifications.
Skills & stack
Selection process
- Online Assessment / Technical Interview Rounds / HR Review
Prep kit
20 resourcesStudy material 4
Aptitude Practice Questions & Mock Tests
Curated logical, quantitative, and verbal reasoning problems for the initial online screening round.
Company-Specific Interview Preparation Corner
Detailed interview experiences, exam formats, and previous test questions for Sandhaanam and tech roles.
Technical Placement Question Bank
High-yield coding cheat sheets, core CS fundamentals (OOP, DBMS, OS, Networks), and rapid revision guides.
Algorithm, DSA & Live Code Debugger Practice
Hands-on problem sets to improve coding speed and step-by-step memory debugging.
Company-specific guides 4
APTITUDE & LOGIC
Aptitude Practice Questions & Online Mock Tests
Curated logical, quantitative, and verbal reasoning problems to sharpen reasoning skills required for the initial screening test.
COMPANY GUIDE
Sandhaanam Interview Preparation Corner
Comprehensive guide covering typical interview formats, common questions, and preparation tips for Sandhaanam and off-campus tech roles.
MOCK TESTS & PAPERS
Comprehensive Interview Prep Resources & Syllabus
Collection of previous year questions, company-specific test patterns, and interview experiences for technical and HR rounds.
CODING PRACTICE
Algorithm and Data Structure Problem Set
Practice problems to improve coding proficiency and algorithm problem-solving speed for technical rounds.
Likely coding questions 4
Round-wise strategy 4
Round 1: Online Assessment (OA)
Aptitude, Quantitative Logic & 2 Coding Problems
Focus on accuracy and speed. Practice arrays, strings, and standard arithmetic puzzles.
Round 2: Technical Interview 1
Core Tech Stack (ASP.NET Core, MVC, SQL, .NET Core, Framework, Asp.Net Mvc, REST APIs, Microservices) & Live Code Tracing
Explain your thought process aloud. Analyze time & space complexities before coding.
Round 3: System Design & Problem Solving
Database Schemas, APIs & Architecture Basics
Clarify edge cases, diagram schemas cleanly, and discuss scalability trade-offs.
Round 4: HR & Cultural Fit Discussion
Sandhaanam Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
Technical questions 5
What is the difference between WHERE and HAVING clauses in SQL? Answer
Model answer: WHERE filters rows before any groupings are applied, while HAVING filters aggregated groups after GROUP BY has executed.
Explain SQL Window functions: ROW_NUMBER(), RANK(), and DENSE_RANK(). Answer
Model answer: ROW_NUMBER() assigns unique sequential integers. RANK() assigns identical ranks to ties and skips ranks. DENSE_RANK() assigns identical ranks to ties without skipping rank numbers.
How do you handle NULL and missing values during data cleaning in Python/Pandas? Answer
Model answer: Use .isna().sum() to identify missing values. Impute with mean/median using .fillna() or remove with .dropna(subset=[...]) depending on variance impact.
What is the difference between Star Schema and Snowflake Schema in Data Warehousing? Answer
Model answer: Star Schema has denormalized dimension tables directly connected to the central Fact table. Snowflake Schema normalizes dimension tables into sub-dimensions to minimize redundancy.
How do you calculate MoM (Month-over-Month) growth in SQL? Answer
Model answer: Use LAG(revenue, 1) OVER (ORDER BY month) to fetch the previous month's revenue and compute (revenue - prev_revenue) / prev_revenue * 100.
Behavioural & HR questions 3
Why do you want to join Sandhaanam as a Dot Net Developer?
Highlight Sandhaanam's market reputation, recent tech innovations, and how your skills in ASP.NET Core directly solve their team's objectives.
Highlight Sandhaanam's market reputation, recent tech innovations, and how your skills in ASP.NET Core directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
How do you handle strict deadlines or sudden scope changes?
Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
4-8 Lacs PA
Mumbai, India
Experience: 3-6 Yrs. Open to matching qua…
