{"schemaVersion":"jobsearcher.job.v1","id":"d3c2c555ce4e49a879403649","url":"https://jobsearcher.com/jobs/d3c2c555ce4e49a879403649","canonicalUrl":"https://jobsearcher.com/jobs/d3c2c555ce4e49a879403649","title":"SOFTWARE DEVELOPER - WINDOWS SERVICES","description":"COMPANY OVERVIEW\n\nThreatLocker® is a global cybersecurity leader that stops cyberattacks before they happen. The company’s Zero Trust Platform prevents breaches from both known and unknown threats by allowing only explicitly trusted software and activity across endpoints, networks, and cloud systems. Built to deploy quickly and scale across complex environments, the platform reduces operational overhead while keeping business running uninterrupted. Headquartered in Orlando, Florida, with offices in Dublin, Dubai, and Brisbane, ThreatLocker protects over 70,000 organizations worldwide.\n\nJOB OVERVIEW\n\nThreatLocker is seeking a highly skilled and self-driven Windows Service Developer to join our cybersecurity engineering team. In this role, you will design, implement, and optimize high-performance background services in C#/.NET, with a strong focus on Windows OS internals. These services are critical components of ThreatLocker’s endpoint protection platform — defending systems from the inside out.\n\nThe ideal candidate is an expert developer with a deep understanding of Windows architecture, secure coding practices, and performance optimization. You will work closely with system internals, file systems, and network layers to build resilient, scalable, and secure service components.\n\nWe value developers who think like attackers, engineers with precision, and debug like forensic analysts. The role will be based in Orlando, FL and is an in-office position.\n\nKEY RESPONSIBILITIES\n\nDesign, develop, and maintain robust Windows Services using C#/.NET, with a focus on security, performance, and reliability.\nWork with low-level Windows components, including Windows APIs, file system hooks, and network stack integration.\nImplement advanced cybersecurity features, such as privilege control, intrusion prevention, and data protection mechanisms.\nDiagnose and resolve complex issues involving system performance, concurrency, memory management, and network communication.\nCollaborate across teams to ensure services align with enterprise security and compliance standards.\nParticipate in code reviews, share best practices, and contribute to a clean, maintainable codebase.\nContinuously improve service resilience, monitoring, and observability with a proactive mindset.\n\nREQUIRED QUALIFICATIONS\n\nExpert-level proficiency in C#/.NET Framework and .NET Core, including asynchronous programming and multithreading.\nStrong understanding of Windows internals: services, registry, process lifecycle, and kernel-level concepts.\nSolid grasp of network protocols (TCP/IP, HTTP/S, DNS) and experience with network control or firewall-level filtering.\nHands-on experience with debugging and profiling tools (e.g., WinDbg, Process Monitor).\nFamiliarity with SQL Server, including stored procedures and index optimization.\nExperience designing and consuming RESTful APIs.\nStrong understanding of secure coding practices and software design patterns.\nBachelor’s degree in Computer Science, Software Engineering, or equivalent hands-on experience.\n\nPREFERRED QUALIFICATIONS IN\n\nExperience with C/C++ interop, kernel development, or Windows filter drivers.\nProven ability to design highly concurrent, long-running Windows Services with efficient resource management.\nFamiliarity with endpoint protection, EDR, or network monitoring technologies.\nUnderstanding of containerized environments and DevOps pipelines for service deployment.\nHands-on experience with GitHub Actions, CI/CD pipelines, and multi-target build orchestration (.NET Framework and .NET Core).\nDeep understanding of Windows security architecture, access control, and threat mitigation strategies.\nMicrosoft or cybersecurity certifications are a strong plus.\n\nWORKING CONDITIONS\n\nThe duties described below are representative of those encountered while performing the essential functions of this position. If necessary, reasonable accommodation may be requested and will be evaluated for its relationship to the essential functions that must be performed.\n\nJob will generally be performed in an office environment but may require travel to visit company offices and/or property locations.\nWhile performing duties of this job, would occasionally require to stand, walk, sit, reach with hands and arms, climb or balance, stoop or kneel, talk and hear, and use fingers and hands to feel objects and tools.\nMust occasionally lift and/or move up to 25 pounds.\nSpecific vision abilities required include close vision, distance vision, depth perceptions, and the ability to adjust focus.\n\nA background check and drug/substance screening are required after a conditional offer. Employment will proceed only upon receiving clear results from both.\n\nThreatLocker also conducts randomized drug and substance testing approximately every 60 days, in line with the same screening standards.","company":"Threatlocker","rawCompany":"threatlocker","city":"Orlando","state":"FL","isRemote":false,"isActive":true,"createdAt":"2026-09-11T06:16:54.165Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1244.00","title":"Network and Computer Systems Administrators","slug":"network-and-computer-systems-administrators"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"513210","title":"Software Publishers","slug":"software-publishers"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"SOFTWARE DEVELOPER - WINDOWS SERVICES","description":"COMPANY OVERVIEW\n\nThreatLocker® is a global cybersecurity leader that stops cyberattacks before they happen. The company’s Zero Trust Platform prevents breaches from both known and unknown threats by allowing only explicitly trusted software and activity across endpoints, networks, and cloud systems. Built to deploy quickly and scale across complex environments, the platform reduces operational overhead while keeping business running uninterrupted. Headquartered in Orlando, Florida, with offices in Dublin, Dubai, and Brisbane, ThreatLocker protects over 70,000 organizations worldwide.\n\nJOB OVERVIEW\n\nThreatLocker is seeking a highly skilled and self-driven Windows Service Developer to join our cybersecurity engineering team. In this role, you will design, implement, and optimize high-performance background services in C#/.NET, with a strong focus on Windows OS internals. These services are critical components of ThreatLocker’s endpoint protection platform — defending systems from the inside out.\n\nThe ideal candidate is an expert developer with a deep understanding of Windows architecture, secure coding practices, and performance optimization. You will work closely with system internals, file systems, and network layers to build resilient, scalable, and secure service components.\n\nWe value developers who think like attackers, engineers with precision, and debug like forensic analysts. The role will be based in Orlando, FL and is an in-office position.\n\nKEY RESPONSIBILITIES\n\nDesign, develop, and maintain robust Windows Services using C#/.NET, with a focus on security, performance, and reliability.\nWork with low-level Windows components, including Windows APIs, file system hooks, and network stack integration.\nImplement advanced cybersecurity features, such as privilege control, intrusion prevention, and data protection mechanisms.\nDiagnose and resolve complex issues involving system performance, concurrency, memory management, and network communication.\nCollaborate across teams to ensure services align with enterprise security and compliance standards.\nParticipate in code reviews, share best practices, and contribute to a clean, maintainable codebase.\nContinuously improve service resilience, monitoring, and observability with a proactive mindset.\n\nREQUIRED QUALIFICATIONS\n\nExpert-level proficiency in C#/.NET Framework and .NET Core, including asynchronous programming and multithreading.\nStrong understanding of Windows internals: services, registry, process lifecycle, and kernel-level concepts.\nSolid grasp of network protocols (TCP/IP, HTTP/S, DNS) and experience with network control or firewall-level filtering.\nHands-on experience with debugging and profiling tools (e.g., WinDbg, Process Monitor).\nFamiliarity with SQL Server, including stored procedures and index optimization.\nExperience designing and consuming RESTful APIs.\nStrong understanding of secure coding practices and software design patterns.\nBachelor’s degree in Computer Science, Software Engineering, or equivalent hands-on experience.\n\nPREFERRED QUALIFICATIONS IN\n\nExperience with C/C++ interop, kernel development, or Windows filter drivers.\nProven ability to design highly concurrent, long-running Windows Services with efficient resource management.\nFamiliarity with endpoint protection, EDR, or network monitoring technologies.\nUnderstanding of containerized environments and DevOps pipelines for service deployment.\nHands-on experience with GitHub Actions, CI/CD pipelines, and multi-target build orchestration (.NET Framework and .NET Core).\nDeep understanding of Windows security architecture, access control, and threat mitigation strategies.\nMicrosoft or cybersecurity certifications are a strong plus.\n\nWORKING CONDITIONS\n\nThe duties described below are representative of those encountered while performing the essential functions of this position. If necessary, reasonable accommodation may be requested and will be evaluated for its relationship to the essential functions that must be performed.\n\nJob will generally be performed in an office environment but may require travel to visit company offices and/or property locations.\nWhile performing duties of this job, would occasionally require to stand, walk, sit, reach with hands and arms, climb or balance, stoop or kneel, talk and hear, and use fingers and hands to feel objects and tools.\nMust occasionally lift and/or move up to 25 pounds.\nSpecific vision abilities required include close vision, distance vision, depth perceptions, and the ability to adjust focus.\n\nA background check and drug/substance screening are required after a conditional offer. Employment will proceed only upon receiving clear results from both.\n\nThreatLocker also conducts randomized drug and substance testing approximately every 60 days, in line with the same screening standards.","datePosted":"2026-09-11T06:16:54.165Z","dateModified":"2026-09-11T06:16:54.165Z","hiringOrganization":{"@type":"Organization","name":"Threatlocker","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Orlando","addressRegion":"FL","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"d3c2c555ce4e49a879403649"},"url":"https://jobsearcher.com/jobs/d3c2c555ce4e49a879403649"}}