About ARSIEM Corporation
At ARSIEM Corporation we are committed to fostering a proven and trusted partnership with our government clients.  We provide support to multiple agencies across the United States Government.  ARSIEM has an experienced workforce of qualified professionals committed to providing the best possible support.
As demand increases, ARSIEM continues to provide reliable and cutting-edge technical solutions at the best value to our clients.  That means a career packed with opportunities to grow and the ability to have an impact on every client you work with. 
ARSIEM is currently looking for a Windows Security Researcher 3. The positions will support one of our Government clients in Annapolis Junction, MD.ResponsibilitiesPerform security research against Windows technologies. Demonstrate the latest techniques and best practices in vulnerability research and demonstrate the ability to follow best practices. Produce detailed documentation of research. Write code in C, Python, and Assembly to demonstrate ability to control the flaws.Minimum QualificationsUnderstanding of Windows Kernel and device driversExperience reading and writing assembly (x86/x64)Extensive experience with debuggers (WinDBG, etc.)Strong C, Python, and ASM development experienceWorking as a team with researchers and developers
Labor Category Requirements - Software Developer 3Minimum eight (8) years of experience programming with object-oriented programming languagesMinimum five (5) years of experience developing Windows applications using Visual Studio or .NET environments OR minimum five (5) years of experience developing UNIX applications using make files or comparable build environmentsExperience developing complex programs using, C, C#, C++, Java, or other comparable languagesMinimum three (3) leading projects that develop complex software, ensuring a collaborative environment, and configuration management, and Experience implementing software life cycle management (requirements, design, develop, test, validate, deploy)
Labor Category Requirements - CNO Analyst/Programmer 3Bachelor's degree and six (6) years of experience OR minimum ten (10) years of experience in computer science, information systems, or network engineeringMinimum eight (8) years of experience programming in Assembly, C, C++, Java, Perl, or PythonMinimum seven (7) years of experience developing in one (1) or more of the following: Windows applications using Visual Studio or .NET environmentsUNIX applications using make files or comparable build environmentsMinimum six (6) years of experience with programming CNO tools and techniquesMinimum five (5) years of experience managing and supervising teams in support of the Government CNO capability developmentMinimum five (5) years of experience with programming CNO tools for the US GovernmentMinimum four (4) years of experience in programming techniques to evade host and or network-based intrusion detection systemsMinimum four (4) years of experience in network sockets programming, developing packet-level programs: expert packet-level understanding of IP, TCP, and application-level protocolsExpert ability in UNIX kernel internals and low-level Windows internals:OS runtime linker/loaderObject file formats (e.g., PE, COFF, ELF)File system internals (e.g., NTFS, ext2, btrfs)OS-specific mandatory and discretionary access control mechanismsProcess and thread APIs and data structures.$125,000 - $183,000 a yearThe ARSIEM pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) job responsibilities, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other laws.
Benefits:For an overview of our benefits, please visit our benefits tab.https://www.arsiem.com/careers/
Original Posting Date:2025-08-06Clearance Requirement: This position requires an active TS/SCI with a polygraph. You must be a U.S. citizen for consideration. Candidate Referral: Do you know someone who would be GREAT at this role? If you do, ARSIEM has a way for you to earn a bonus through our referral program for persons presenting NEW (not in our resume database) candidates who are successfully placed on one of our projects. The bonus for this position is $10,000,  and the referrer is eligible to receive the sum for any applicant we place within 12 months of referral. The bonus is paid after the referred employee reaches 6 months of employment.
ARSIEM is proud to be an Equal Opportunity and Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age, or any other federally protected class.