Senior .NET Developer

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Since 1990, Cook Systems—a certified veteran-owned IT consulting firm—has been helping businesses and professionals grow through innovation, integrity, and investment in people. We partner with Fortune 500 enterprises and high-growth companies alike to deliver agile technology solutions, AI-driven talent strategies, and our signature FastTrack program that develops the next generation of tech talent.

At Cook, you’ll find a culture that values excellence, creativity, and accountability. We believe in opportunity backed by trust—and in building careers that last. Check out what our team members have to say on our Glassdoor page, and discover why Cook Systems is where meaningful careers take off!

Summary: The Senior Developer at IDOH will be responsible for analyzing existing applications and building innovative web applications. This role involves collaborating with project managers, developers, business analysts, and functional team members to ensure the successful execution of project activities.

Responsibilities:

• Complete project assignments and participate in the full development life cycle, including requirements analysis and design.
• Collaborate with technical and functional staff to understand detailed business requirements, processes, and alignment with agency standards, federal, and state policies.
• Draft technical specifications based on conceptual design and business requirements.
• Apply object-oriented techniques and best practices for design, development, unit testing, and deployment.
• Develop code with a strong unit testing strategy and plans.
• Utilize Microsoft .NET Framework, a supported MVC framework, and C# programming for application development.
• Ensure project milestones are met in collaboration with the project manager.
• Prototype, refine, test, and debug programs with input from the PM, technical staff, and end users.
• Work independently while considering agency web applications architecture and business decisions in design processes.
• Support EDI claim transactions and resolve EDI data transmission conflicts.
• Provide helpdesk level support for EDI issues and facilitate accurate file exchanges with trading partners.

Required Skills:

• Proven experience in application development using Microsoft .NET Framework and C#.
• Proficiency in applying object-oriented programming and MVC frameworks.
• Strong analytical skills to perform requirements analysis and communicate results effectively.
• Ability to work independently and exercise independent judgment under general supervision.
• Excellent communication and collaboration skills to work with diverse project teams.

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Why Work with Us

At Cook Systems, we don’t just offer jobs—we build futures. Our people are at the heart of everything we do, and we’re committed to supporting you with benefits that deliver real security, flexibility, and growth from day one.

• Your Health, Your Way: Choose from two comprehensive medical plans through Blue Cross Blue Shield, with dental and vision coverage included. With access to one of the nation’s largest provider networks, you’ll have quality care wherever life takes you.
• Peace of Mind: Protect what matters most with life, critical illness, and accident insurance through Unum—because your family’s security matters.
• Flexibility for Life: Plan ahead and save with a Flexible Spending Account and Daycare FSA through Navia, helping you manage healthcare and dependent-care expenses your way.
• Extra Protection When You Need It: Our Health Gap Insurance through Sun Life helps cover unexpected costs, so you’re never caught off guard.
• Your Future Starts Now: Build your future with our 401(k) plan through The Standard. You’re eligible after just six months—because long-term success deserves a strong foundation.

At Cook Systems, you’re not just an employee—you’re part of a team that values ideas, celebrates results, and grows together. Here, your impact is visible, your contributions are valued, and your career has room to thrive. Ready to be part of something bigger? Let’s build the future together at Cook Systems.

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