Information Systems Security Engineer (ISSE) - FULLY CLEARED wit with Security Clearance

Constellation Technologies, Inc; Maryland; On-site; USD 140,000 - 265,000; Full time

Benefits offered by this job

Health insurance

HSA

Dental

Vision

Life insurance

Disability insurance

Training reimbursement

Tech training

401(k) match

Job summary

Constellation Technologies, Inc. seeks an Information Systems Security Engineer (ISSE) in Maryland, fully cleared with polygraph. The role focuses on RMF, vulnerability testing, and secure infrastructure across on-site environments at Annapolis Junction/Fort Meade.

Candidates must have a TS/SCI clearance with active polygraph and a related Bachelor's degree. Responsibilities include security policy formulation, risk assessment, and hands-on testing using Nessus, NMAP, and Wireshark.

Qualifications

• Bachelor's degree in Computer Science, Information Assurance, or related discipline.
• 12 years of ISSE experience on a large technical program.
• Hands-on vulnerability testing with customer tools.
• Experience with Risk Management Framework (RMF).
• Formulating and assessing IT security policy.
• Knowledge of security tools such as Nessus, NMAP, Wireshark.

Skills

Verbal and written communication

Multi-tasking / prioritization

Teamwork in fast-moving environment

Adherence to best practices

Security awareness & policy

Education

Bachelor's degree in CS/IA/ISSE

Tools

Nessus

NMAP

Wireshark

Penetration testing tools

Job description

Information Systems Security Engineer (ISSE) – FULLY CLEARED with POLYGRAPH REQUIRED. Annapolis Junction, MD / Fort Meade, MD. Software Development – DEV01 – Securing Infrastructures / Systems Security Personnel / On‑site. Risk Management Framework (RMF), NMAP, PKI, Wireshark, auditing, penetration testing, scripting, IASAE, CISSP, ISSEP, NISCAP. Due to federal contract requirements, United States citizenship and an active TS/SCI security clearance and polygraph are required for the position.

Required Qualifications

• Must be a US Citizen
• Must have TS/SCI clearance w/ active polygraph
• Bachelor's degree in Computer Science, Information Assurance, Information Security System Engineering, or a related discipline.
• Must have twelve (12) years of experience working as an ISSE on a large technical program.
• Must have a solid understanding of security practices and policies and hands‑on vulnerability testing experience using customer tools.
• Must have experience applying Risk Management Framework.
• Must have experience formulating and assessing IT security policy.
• Must have demonstrated knowledge of and experience with common security tools, such as Nessus, NMAP and Wireshark, hardware/software security implementation, communication protocol, encryption techniques/tools, and web services.
• Must have experience with secure configurations of commonly used desktop and server operating systems.
• Must be comfortable working on multiple systems and components simultaneously in various configurations.
• Must have strong verbal and written communications skills.
• Must be committed to adopting and adhering to best practices.
• Must be able to effectively plan and prioritize tasking and communicate clearly regarding technical options and trade‑offs.
• Must be capable of performing high‑quality work both independently and with a team in a fast‑moving environment.

Nice to Have

• Five (05) years of experience with Defense in Depth Principles/technology (including access control, authorization, identification and authentication, public key infrastructure, network and enterprise security architecture) and applying risk assessment methodology to system development.
• DoD 8570 compliance with IASAE Level 2 or 3.
• Information Systems Security Engineering Professional (ISSEP) Certification.
• Computer Information Systems Security Professional (CISSP) Certification.
• Experience developing/implementing integrated security services management processes, such as assessing and auditing network penetration testing, anti-virus planning assistance, risk analysis, and incident response.
• Experience providing information assurance support for application development that includes system security certifications and project evaluations for firewalls that encompass the development, design, and implementation.
• Experience with penetration testing tools.
• Experience with scripting languages.

$140,000 - $265,000 a year. The pay range for this job, with multi‑levels, 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) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Benefits

• Affordable healthcare options with 80% employer paid premium PLUS a company‑funded HSA
• Comprehensive Dental package
• Vision with 80% employer paid premium
• Employer paid Life insurance 100%
• Employer paid Short‑term and Long‑term disability 100%
• Annual training, continued education, and professional memberships reimbursement
• Unlimited access to Red Hat Enterprise Linux, AWS, and NetApp training and accreditation
• Annual reimbursement for technology i.e. phones, computers, printers, etc…
• 401(k) with company match up to 5% with 100% immediate vesting (after 90 days of employment)

Environment and Perks

• Professional development investment and paid time off for training
• Contract and work locations in Maryland, Virginia, Colorado, Texas, Utah, California, Florida and Hawaii.
• Team building events throughout the year such as Destination Family Events, Holiday Party, Monthly Get‑Togethers
• Leadership Team engagement and mentorship
• Performance Recognition Program
• Complimentary branded apparel

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.

Constellation Technologies is an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, religion, creed, color, national origin, ancestry, sex (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, medical condition, marital or domestic partner status, sexual orientation, gender, gender identity, gender expression and transgender status, mental disability or physical disability, genetic information, military or veteran status, citizenship, low‑income status or any other status or characteristic protected by applicable law. Job applicants can submit questions about CTI’s equal employment opportunity policy to [relevant contact].