Sr. Software Developer (Windows Services- .NET)

WINDOWS SERVICE DEVELOPER – .NET / C# Location: Orlando, FL | Fully Onsite

Salary: $125,000–$160,000 | Based on Experience

Job Type: Full-Time

Experience Level: Senior / Expert

Key Skills: C# | .NET | Windows Services | Windows Internals | Multithreading

Position Overview Our client, a fast-growing cybersecurity software company, is seeking a senior-level Windows Service Developer to build and optimize high-performance services powering endpoint security and system management solutions.

This role requires deep expertise in C#/.NET, Windows internals, multithreaded applications, and secure software development within performance-critical environments.

What You’ll Do

• Design, develop, and maintain high-performance Windows Services using C#/.NET.
• Build solutions interacting with Windows APIs, services, file systems, networking, and system components.
• Develop endpoint management, privilege control, monitoring, and security functionality.
• Troubleshoot complex concurrency, memory, communication, and OS-level issues.
• Profile, debug, and optimize service performance.
• Develop and integrate REST APIs and service-to-service communication.
• Collaborate with engineering, infrastructure, and security teams.
• Participate in architecture discussions, technical design, and code reviews.

What You’ll Bring

• Expert-level C# and .NET Framework / .NET Core / .NET experience.
• Extensive experience building Windows Services and multithreaded applications.
• Deep knowledge of Windows internals, including services, registry, processes, permissions, and system architecture.
• Experience working with Windows APIs and low-level OS functionality.
• Strong TCP/IP, HTTP/S, DNS, and networking knowledge.
• Experience with debugging and profiling tools such as WinDbg and Process Monitor.
• REST API development and integration experience.
• Working knowledge of SQL Server, stored procedures, indexing, and query optimization.
• Strong understanding of software architecture, design patterns, and secure coding practices.
• Bachelor's degree in a related technical field or equivalent professional experience.

Preferred Experience

• Cybersecurity or endpoint management software.
• Application control or privilege management technologies.
• System monitoring, observability, and diagnostics.
• High-performance, enterprise-scale software environments.

Compensation

• $125,000–$160,000 salary, based on experience.

WHY JOIN?

• Build software operating at the core of the Windows operating system.
• Solve complex performance, scalability, and cybersecurity challenges.
• Work alongside experienced engineers on enterprise-grade products.
• Develop technology used to help secure organizations worldwide.

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