.NET Core Developer Job Description Template - 2025 Guide

Position Overview

We are seeking a skilled .NET Core Developer to join our development team and build high-performance, scalable applications using Microsoft's modern .NET framework. You will design and develop cross-platform applications, work with cloud technologies, and contribute to our digital transformation initiatives using cutting-edge .NET technologies.

Key Highlights

• Work with modern .NET Core/.NET 8+ framework and cross-platform development
• Build cloud-native applications using Azure, AWS, or Google Cloud Platform
• Collaborate with agile teams using DevOps practices and CI/CD pipelines
• Competitive compensation with comprehensive benefits package
• Opportunity to work on microservices architecture and containerized applications
• Professional development support and Microsoft certification opportunities

Why This Role Matters

.NET Core Developers are essential to our technology modernization strategy, building robust, scalable applications that leverage the full power of Microsoft's modern development platform. You'll be instrumental in creating cross-platform solutions that drive business growth while ensuring high performance, security, and maintainability. This position offers the opportunity to work with the latest .NET technologies and shape our architectural decisions.

About the Role

As a .NET Core Developer, you will be responsible for developing, testing, and maintaining applications using the .NET Core framework and related Microsoft technologies. You'll work closely with cross-functional teams to deliver solutions that meet business requirements while adhering to modern development practices and architectural patterns.

This role requires expertise in C#, .NET Core, and modern development practices including containerization, microservices, and cloud deployment. You'll contribute to API development, work with various databases, and implement solutions that are scalable, maintainable, and secure.

We value developers who are passionate about clean code, modern architecture patterns, and continuous learning in the rapidly evolving .NET ecosystem. You'll have opportunities to work on diverse projects ranging from web APIs to cloud-native applications and enterprise integrations.

Key Responsibilities

Application Development

• Design and develop applications using .NET Core/.NET 8+ framework with C#
• Build RESTful APIs and web services using ASP.NET Core Web API
• Implement Entity Framework Core for data access and database operations
• Develop cross-platform applications that run on Windows, Linux, and macOS
• Create responsive web applications using ASP.NET Core MVC or Blazor

Architecture & Design

• Design and implement microservices architecture using .NET Core
• Implement design patterns including Repository, Unit of Work, and Dependency Injection
• Develop cloud-native applications optimized for containerization and orchestration
• Design database schemas and optimize queries for performance
• Implement caching strategies using Redis or in-memory caching

DevOps & Deployment

• Containerize applications using Docker and deploy to Kubernetes clusters
• Implement CI/CD pipelines using Azure DevOps, GitHub Actions, or similar tools
• Deploy applications to cloud platforms (Azure, AWS, Google Cloud)
• Configure application monitoring and logging using Application Insights or similar tools
• Implement automated testing strategies including unit, integration, and API testing

Collaboration & Quality

• Participate in code reviews and maintain coding standards
• Work in agile development teams using Scrum or Kanban methodologies
• Collaborate with frontend developers, designers, and business stakeholders
• Debug and troubleshoot complex issues across distributed systems
• Document technical solutions and maintain architectural decision records

Required Qualifications

Education & Experience

• Bachelor's degree in Computer Science, Software Engineering, or related field
• 3-5 years of professional experience in .NET development
• At least 2 years of hands-on experience with .NET Core/.NET 5+ frameworks
• Proven experience building and deploying production applications

Technical Skills

• Strong proficiency in C# programming language and .NET Core framework
• Experience with ASP.NET Core Web API development and RESTful services
• Solid understanding of Entity Framework Core and database design principles
• Knowledge of SQL Server, PostgreSQL, or other relational databases
• Familiarity with version control systems (Git) and branching strategies
• Understanding of object-oriented programming principles and SOLID principles

Core Competencies

• Strong analytical and problem-solving skills with attention to detail
• Excellent communication skills for technical documentation and team collaboration
• Ability to work independently and manage multiple priorities
• Understanding of software development lifecycle and agile methodologies

Preferred Qualifications

Advanced Technical Skills

• Experience with container technologies (Docker, Kubernetes) and orchestration
• Knowledge of cloud platforms (Azure, AWS, Google Cloud) and cloud-native development
• Familiarity with microservices architecture and distributed systems patterns
• Experience with message queuing systems (RabbitMQ, Azure Service Bus, Apache Kafka)
• Understanding of authentication and authorization (OAuth 2.0, JWT, Identity Server)

Additional Experience

• Experience with frontend technologies (Blazor, Angular, React) for full-stack development
• Knowledge of NoSQL databases (MongoDB, CosmosDB) and data modeling
• Familiarity with testing frameworks (xUnit, NUnit, MSTest) and test-driven development
• Experience with performance profiling and optimization techniques
• Microsoft certifications (Azure Developer Associate, .NET Developer certifications)

What We Offer

Compensation & Benefits

• Competitive base salary: $85,000 - $135,000 (based on experience and location)
• Annual performance bonuses and potential equity participation
• Comprehensive health insurance (medical, dental, vision) with company contribution
• 401(k) retirement plan with company matching up to 6%
• Flexible PTO policy and paid holidays

Professional Development

• Annual learning budget ($3,000 per year) for training and certifications
• Microsoft certification reimbursement and exam vouchers
• Conference attendance including Microsoft Build, .NET Conf, and regional events
• Access to Pluralsight, Microsoft Learn, and other online learning platforms
• Internal tech talks and .NET community meetup participation

Work Environment

• Hybrid work model with flexible remote options
• Modern development tools including Visual Studio Enterprise license
• High-performance development workstations and cloud development environments
• Collaborative spaces designed for pair programming and team collaboration
• Regular hackathons and innovation time for exploring new .NET features

Context Variations

Corporate Environment

In enterprise settings, emphasize experience with legacy .NET Framework migration to .NET Core, enterprise integration patterns, and compliance requirements. Highlight opportunities to work on large-scale systems with complex business logic and integration with existing enterprise systems.

Startup Environment

For startup roles, focus on full-stack capabilities, rapid prototyping skills, and ability to make architectural decisions. Emphasize opportunities for significant ownership, direct impact on product development, and experience with early-stage technical decisions that will scale with business growth.

Remote/Hybrid Work

For remote positions, emphasize strong communication skills, experience with distributed team collaboration, and self-direction. Highlight tools and processes that support remote development effectiveness including cloud development environments and virtual collaboration practices.

Industry Considerations

Industry	Key Requirements	Unique Aspects
Financial Services	- Regulatory compliance knowledge - High-performance trading systems - Security-first development	Strong emphasis on transaction integrity and audit trails
Healthcare	- HIPAA compliance understanding - HL7/FHIR integration experience - Medical device integration	Focus on patient data privacy and clinical workflow integration
E-commerce	- High-traffic system experience - Payment gateway integration - Real-time inventory management	Emphasis on performance, scalability, and transaction processing
Manufacturing	- ERP system integration - IoT device connectivity - Real-time data processing	Focus on system reliability and industrial protocol knowledge
SaaS	- Multi-tenant architecture - Subscription billing systems - API-first development	Emphasis on scalability, reliability, and customer onboarding
Government	- Security clearance requirements - Accessibility compliance - Legacy system modernization	Strong focus on security, compliance, and documentation

Compensation Guide

Salary Information

National Average Range: $85,000 - $135,000 annually

Major Metro Areas: | Location | Salary Range | Cost of Living Factor | |----------|-------------|---------------------| | Seattle | $110,000 - $155,000 | Microsoft headquarters premium | | San Francisco Bay Area | $125,000 - $170,000 | High tech demand, premium market | | New York City | $115,000 - $160,000 | Financial services concentration | | Chicago | $90,000 - $135,000 | Strong enterprise presence | | Austin | $95,000 - $140,000 | Growing tech hub | | Denver | $85,000 - $130,000 | Emerging tech market | | Atlanta | $80,000 - $125,000 | Lower cost of living | | Remote | $85,000 - $145,000 | Varies by company location policy |

Factors Affecting Compensation:

• Azure cloud expertise and certifications command premium salaries
• Industry specialization (fintech, healthcare) typically increases compensation
• Microservices and containerization experience adds 10-15% to base salary
• Team lead or architect responsibilities increase compensation significantly

Salary data based on 2025 market research from multiple industry sources including Glassdoor, PayScale, and Stack Overflow Developer Survey.

Interview Questions

Technical/Functional Questions

1. Architecture Design: "Design a microservices-based e-commerce system using .NET Core. How would you handle data consistency, inter-service communication, and deployment?"

2. Performance Optimization: "Explain how you would optimize a .NET Core API that's experiencing high latency. What tools and techniques would you use?"

3. Entity Framework: "Compare Entity Framework Core's Code First vs Database First approaches. When would you use each, and how do you handle migrations in a team environment?"

4. Dependency Injection: "Explain the built-in DI container in .NET Core. How would you handle complex object graphs and what are the different service lifetimes?"

5. Async Programming: "Describe the difference between Task and ValueTask in .NET. When would you use ConfigureAwait(false) and why?"

6. Security: "How do you implement authentication and authorization in a .NET Core Web API? Explain JWT tokens vs session-based authentication."

7. Memory Management: "Explain garbage collection in .NET Core. How would you identify and resolve memory leaks in a production application?"

8. Docker & Containers: "Walk me through containerizing a .NET Core application. What considerations do you have for multi-stage builds and production deployments?"

Behavioral Questions

1. Learning Agility: "Describe how you've adapted to major .NET framework changes, such as migrating from .NET Framework to .NET Core."

2. Problem Solving: "Tell me about a challenging performance issue you encountered in a .NET application. How did you diagnose and resolve it?"

3. Collaboration: "Describe a time when you had to work with frontend developers to design an API. How did you ensure good communication and outcomes?"

4. Technical Decisions: "Give me an example of when you had to choose between different architectural approaches. What factors influenced your decision?"

5. Continuous Improvement: "Tell me about a time when you identified and implemented a process improvement in your development workflow."

6. Mentoring: "Describe your experience mentoring junior developers or sharing .NET knowledge with your team."

Culture Fit Questions

1. Microsoft Ecosystem: "What excites you most about working with Microsoft technologies and the .NET ecosystem?"

2. Continuous Learning: "How do you stay current with the rapidly evolving .NET platform and related technologies?"

3. Open Source: "How do you feel about .NET being open source? Have you contributed to any .NET-related open source projects?"

4. Innovation: "Tell me about a time when you experimented with a new .NET feature or technology. What was the outcome?"

Evaluation Tips: Look for candidates who demonstrate strong .NET fundamentals, understanding of modern development practices, and enthusiasm for the Microsoft technology stack. Pay attention to their ability to explain complex .NET concepts clearly and their experience with real-world performance and scalability challenges.

Hiring Tips

Quick Sourcing Guide

Top Platforms for .NET Core Developers:

• GitHub: Review .NET repositories and contribution history to open source projects
• Stack Overflow: Look for active participants in .NET-related discussions
• LinkedIn: Professional network with Microsoft technology endorsements
• Microsoft MVP Directory: Identify recognized experts in the .NET community

Professional Communities:

• Local .NET user groups and meetups: Build relationships with active community members
• Microsoft events and conferences: Network at Build, .NET Conf, and regional events
• University partnerships: Access to new graduates with modern .NET training

Posting Optimization Tips:

• Include specific .NET Core version requirements and desired technologies
• Mention cloud platform preferences (Azure, AWS, Google Cloud)
• Highlight modern development practices like DevOps and containerization
• Include remote work options and professional development opportunities

Red Flags to Avoid

Common Hiring Mistakes:

• Version confusion: Not distinguishing between .NET Framework and .NET Core/.NET 8+ experience
• Cloud assumptions: Expecting extensive cloud experience from all candidates
• Certification obsession: Overvaluing Microsoft certifications versus practical experience
• Legacy fixation: Rejecting candidates who haven't worked with older .NET Framework versions
• Full-stack expectations: Requiring extensive frontend skills for backend-focused roles
• Interview complexity: Using overly academic questions that don't reflect day-to-day .NET development

FAQ Section

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This job description template is designed to attract qualified .NET Core Developer candidates while clearly communicating role expectations and growth opportunities within the Microsoft technology ecosystem. Customize the specific requirements, compensation, and benefits to match your organization's needs and market position.