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Senior .NET Developer

Insomniac Design is a global digital agency headquartered in Washington D.C., with offices in London, Bucharest, and Chisinau. We’re an agile, determined, and innovative team organized by functional areas of expertise—Creative, Technology, Strategy, and Management. We specialize in human-centered design with a deep focus on design thinking and digital transformation.


The Senior .NET Developer will lead the charge on designing and building cutting-edge web applications for clients like BenefitHub, using C#, .NET, SQL Server, and Azure. You’ll architect scalable solutions, mentor juniors, and partner with DevOps and QA to optimize our development lifecycle and infrastructure.


Responsibilities:
  • Develop advanced .NET solutions — APIs, microservices, and web portals with C#.
  • Be able to work with SQL Databases — complex queries, indexing, and performance query optimization.
  • Know how to interact with Azure infrastructure — e.g.deploy code to Azure App Services, Functions.
  • Implement robust authentication (e.g., OAuth 2.0, JWT) and integrate with SSO systems.
  • Mentor junior devs — guide code reviews, troubleshoot tough bugs, and share Azure/.NET expertise.
  • Ensure compliance with security standards (e.g. SOC2) and maintain clear documentation.
  • Dig into production issues—analyze logs, fix root causes, and prevent repeats.
  • Stay ahead—evaluate new .NET features and Azure tools to keep us sharp.


Skills & Experience:
  • Experience: 5+ years with C# and .NET—building web apps and enterprise solutions.
  • Database: Deep SQL Server expertise—stored procedures, triggers, optimization.
  • Cloud: Strong Azure experience—scaling apps, securing services, monitoring with Insights.
  • Must-Have: Mastery of .NET Core, Entity Framework, and REST API design (e.g., Swagger).
  • Must-Have: Proven skills in authentication flows (OAuth, SAML, JWT) and secure coding.
  • Advantage: Experience with microservices, serverless Azure Functions, or front-end (React/Angular).
  • Agile & Collaboration: Ability to lead devs, QA, and ops teams to streamline delivery.
  • Advantage: Familiarity with CI/CD tools (Azure DevOps, Bitbucket Pipelines) or monitoring (Prometheus, Grafana).
  • Education: Bachelor’s in Computer Science, Engineering, or equivalent experience.


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Average salary estimate

$70000 / YEARLY (est.)
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$60000K
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What You Should Know About Senior .NET Developer, Insomniac Design

If you're a passionate coder looking to make a significant impact, Insomniac Design has the perfect opportunity for you. We're on the lookout for a Senior .NET Developer to join our dynamic team in Chisinau, Moldova. You'll be leading the charge in crafting innovative web applications for notable clients, like BenefitHub, all while utilizing your expertise in C#, .NET, SQL Server, and Azure. At Insomniac Design, we pride ourselves on weaving together creativity and technology through a human-centered design ethos. Your role will involve architecting scalable solutions that not only meet client needs but also elevate our practices. You'll have the chance to mentor junior developers, guiding them through code reviews and troubleshooting challenges. Collaboration is key here; partnering with our DevOps and QA teams, you will optimize our development lifecycle and ensure security compliance, while also digging into production issues to maintain our high standards. Staying ahead of the curve is vital, so you'll continually evaluate new .NET features and Azure tools to keep our offerings sharp and relevant. If you have over 5 years of experience with C#, .NET, and SQL Server and thrive in Agile environments, we'd love to have you join our team and embark on this exciting journey together.

Frequently Asked Questions (FAQs) for Senior .NET Developer Role at Insomniac Design
What are the main responsibilities of a Senior .NET Developer at Insomniac Design?

As a Senior .NET Developer at Insomniac Design, your primary responsibilities will include developing advanced .NET solutions such as APIs and microservices, working intricately with SQL databases for query optimization, and deploying code efficiently using Azure services. You will also mentor junior developers, ensure compliance with security standards, and proactively manage production issues while continuously evaluating and implementing the latest .NET features.

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What qualifications do I need to apply for the Senior .NET Developer position at Insomniac Design?

To apply for the Senior .NET Developer role at Insomniac Design, you should have at least 5 years of experience with programming in C# and .NET, as well as a deep understanding of SQL Server. Familiarity with Azure cloud services, secure coding practices, and experience with authentication standards like OAuth 2.0 are essential. A Bachelor’s degree in Computer Science or a related field is also preferred.

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Is mentoring part of the Senior .NET Developer role at Insomniac Design?

Absolutely! Mentoring is a key part of the Senior .NET Developer position at Insomniac Design. You will be responsible for guiding junior developers, sharing your expertise, and conducting code reviews to foster their growth and ensure high-quality code delivery.

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What technologies does Insomniac Design expect the Senior .NET Developer to be proficient in?

As a Senior .NET Developer at Insomniac Design, you should be proficient in C#, .NET, SQL Server, and Azure. Mastery of .NET Core, Entity Framework, REST API design, and authentication flows is crucial. Familiarity with tools like Azure DevOps and CI/CD practices will give you an added advantage.

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How does Insomniac Design promote collaboration among teams?

Insomniac Design fosters a collaborative environment by encouraging open communication between developers, QA teams, and DevOps. As a Senior .NET Developer, you will lead these teams in streamlining delivery processes and ensuring that everyone is aligned towards common goals, making agile methodologies integral to our success.

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Common Interview Questions for Senior .NET Developer
Can you describe a recent project where you utilized your .NET expertise?

When answering this question, provide a clear overview of the project, your specific role, the technologies you used, and the challenges you faced. Highlight how your contributions impacted the project's success and what you learned from the experience.

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How do you ensure code quality and best practices in .NET development?

Discuss the importance of code reviews, automated testing, and documentation. Mention specific tools or practices you use to maintain high coding standards, such as linters, code analyzers, or pair programming.

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How do you approach performance optimization in SQL Server?

Explain your strategies for performance optimization, such as indexing, query tuning, and using stored procedures. Provide examples of scenarios where you've successfully improved performance.

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What is your experience with Azure, specifically related to deploying applications?

Highlight your experience with deploying applications to Azure, including any specific services you've used like Azure App Services or Functions. Provide examples of how you managed scaling and ensured security.

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Can you explain the differences between REST and SOAP?

Discuss the key differences focusing on factors like usability, complexity, and when you would choose one over the other. Mention how your understanding of these protocols influences your development approaches.

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What authentication methods are you familiar with, and how do you implement them?

Outline the authentication methods you've worked with, such as OAuth 2.0 and JWT. Provide a brief example of how you've implemented these methods in past projects.

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How do you keep up with the latest trends and features in .NET development?

Mention resources you use, like online courses, blogs, forums, or conferences. Explain how staying updated helps you bring innovative solutions to your projects.

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Can you describe a time when you had to troubleshoot a complex production issue?

Share a specific experience where you analyzed logs and root causes to resolve production issues. Emphasize the steps you took and the outcome of your troubleshooting efforts.

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What tools do you use for version control, and why are they important?

Discuss tools like Git and explain how they facilitate collaboration and code management. Provide examples of how version control helped you in your previous projects.

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How would you mentor a junior developer struggling with a coding task?

Describe the techniques you would use to assist a junior developer, such as pair programming, breaking down the task into manageable parts, and guiding them through solutions while encouraging independent thinking.

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Insomniac Design is an award-winning digital creative agency founded in 1999, based in D.C.’s historic Blagden Alley. We’re an agile, nimble and innovative team organized by functional areas of expertise — Creative, Technology, Strategy, and Manag...

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DATE POSTED
April 23, 2025

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