Personnel Security Specialist

Join a Company Where Your Work Makes a Difference At ISN , we believe our people are the driving force behind our success. For more than 45 years, we've partnered with over 150 federal agencies to deliver innovative, mission-critical solutions that strengthen government mission and serve the public. Recognized over 25 times by the Washington Business Journal as one of the 50 Fastest Growing Government Contractors and by the Inc. 5000 as one of the Fastest Growing Private Companies , ISN continues to grow through exceptional service, innovation, and a commitment to excellence. We have earned more than 100 commendation letters from our customers recognizing our commitment to exceptional quality, timely delivery, and unwavering integrity. We take pride in our role as a trusted government partner, delivering innovative solutions that benefit society, strengthen national security, and support mission-critical operations. At ISN, you'll find more than a job—you'll find an opportunity to build your career, collaborate with talented professionals, and make a meaningful impact supporting important federal missions. We foster a collaborative, inclusive culture where employees are encouraged to learn, grow, share ideas, and contribute to innovative solutions for our customers. Whether you're just beginning your career or bringing years of experience, you'll join a team that values integrity, accountability, teamwork, and continuous improvement. If you're passionate about making a difference and delivering exceptional results, we'd love to have you on our team. Why You'll Love Working at ISN We believe great employees deserve great support. Our comprehensive benefits package includes: Comprehensive Medical Coverage with Prescription Benefits Dental Insurance Flexible Spending Accounts (FSA) Company-Paid Short-Term & Long-Term Disability Company-Paid Basic Life Insurance 401(k) Retirement Plan Paid Time Off beginning on your first day of employment Professional growth and leadership development opportunities ISN is looking to add a Full-Time Personnel Security Specialist to our Bethesda, Maryland office. Key Responsibilities The Personnel Security Specialist is responsible for administering and managing personnel security programs to ensure compliance with U.S. Government security requirements, federal regulations, and company policies. This position supports the processing, adjudication, and maintenance of security clearances for employees, contractors, and consultants while safeguarding classified and sensitive information. Must be in office 5 days a week in our Bethesda location. Preferred Qualifications Process and manage personnel security clearances, including initial investigations, periodic reinvestigations, upgrades, and reciprocity requests. Prepare, review, and submit security clearance documentation through government systems, including DISS, NBIS/eApp, and other applicable databases. Conduct pre-employment security screening and verify eligibility for access to classified information. Maintain accurate personnel security records and ensure compliance with applicable federal regulations and contract requirements. Monitor clearance eligibility, expiration dates, and reinvestigation requirements. Coordinate with government customers, Defense Counterintelligence and Security Agency (DCSA), contracting officers, Facility Security Officers (FSOs), and Human Resources. Prior experience with DHS (Dept of Homeland Security). ISN Corporation is proud to be an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive workplace where all qualified applicants receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, disability, protected veteran status, genetic information, or any other status protected by applicable law. ISN Corporation maintains a Drug-Free Workplace . All candidates must successfully complete a pre-employment background investigation prior to starting employment. #J-18808-Ljbffr