Information Systems Security Engineer

Washington, DCFederal Division – Cleared Opportunities /Full-Time /On-sitePlanet Technologies, the Nation’s leading Microsoft services provider to the public sector, is looking for a highly motivated individual to join our growing team as an Information Systems Security Engineer (ISSE). In this role, you will be supporting impactful projects that make a difference for our country. The ISSE will integrate security engineering principles, requirements, and controls into the design, development, testing, and sustainment of information systems throughout the Systems Development Life Cycle (SDLC).ResponsibiltiesResponsible for integrating security engineering principles, requirements, and controls into the design, development, testing, and sustainment of information systems throughout the Systems Development Life Cycle (SDLC).This role serves as the primary security engineering authority supporting system owners, ISSOs, and development teams in achieving and maintaining a system’s Authorization to Operate (ATO).Identifies and documents information security requirements during system design and participates in design reviews, recommending engineering solutions to mitigate identified risks.Supports the categorization, selection, implementation, and assessment of security controls under NIST SP 800-53/RMF, developing SSPs, SARs, and POA&Ms in support of ATO packages.Engineers and validates technical security controls (access control, auditing, encryption, boundary protection) and conducts or supports security testing to verify control effectiveness.Reviews system configurations against DISA STIGs, supports vulnerability management and remediation prioritization, and assesses the security impact of proposed system changes.Prepares technical security documentation (architecture diagrams, control implementation statements, interconnection security agreements) and advises ISSOs, program managers, and developers throughout the system lifecycle.QualificationsBachelor’s degree in Cybersecurity, Information Technology, Computer Science, or a related field, ideally with 8 years’ experience.Proven experience working in a Federal environment using SDLC to integrate security engineering principles, requirements, and controls into the design, development, testing, and sustainment of information systems Previous success serving as the primary security engineering authority supporting system owners, ISSOs, and development teams in achieving and maintaining a system’s Authorization to Operate (ATO).Previous participation in design reviews, and the ability to make recommendations to mitigate risksExperience working with NIST SP 800-53/RMF, developing SSPs, SARs, and POA&Ms in support of ATO packagesExperience supporting vulnerability management and remediation prioritization, and assesses the security impact of proposed system changesAbility to prepare effective technical security documentationProven success advising ISSOs, program managers, and developers throughout the system lifecycle.Certifications including: CISSP, ISSEP, Security+, CASP+/SecurityX, CISM, CSSPThe ability and willingness to work onsite 5 days a week in Washington, DC,An active Top Secret ClearancePlanet Technologies is the leading provider of Microsoft Consulting Services to public sector and commercial organizations. Planet has significant experience in deploying business intelligence, cloud services, unified communications, and systems management with an emphasis building, deploying, and managing custom solutions that transform the business operations of federal government agencies. Planet Technologies does not discriminate in employment opportunities, terms and conditions of employment, or practices. All qualified applicants will receive consideration for employment without regard to race, age, gender, religious or political beliefs, national origin or heritage, disability, sexual orientation, protected veteran status, or any characteristic protected by law.  Select positions at Planet Technologies have Federal Agency Clearance Requirements and may require up to a 10-year background investigation and/or US Citizenship (clearable). Salaries for Information Systems Security Engineers at Planet Technologies range from $130,000 and $190,000. Several factors will impact final pay offered to a successful candidate including but not limited to the type and years of experience within the job, clearance level, the type of years and experience within the industry, education, training, etc. Visit  to learn more about us. Details about our benefits can be found here Planet Technologies 2026-2027 Benefits Guide We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.