{"id":2448078,"url":"https://alion.io/job/excelity-information-systems-security-engineer","title":"Information Systems Security Engineer","company":{"id":4422753,"name":"Excelity","domain":"excelity.io","url":"https://alion.io/company/excelity","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Gem","truth_index":null},"role":"Security","role_family":"Security","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Herndon, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":119000,"max_usd":232000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":1121},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"GitLab","optional":false},{"name":"NIST 800-53","optional":false},{"name":"SIEM","optional":false},{"name":"SonarQube","optional":false},{"name":"Splunk","optional":false},{"name":"AWS","optional":true},{"name":"CentOS Stream","optional":true},{"name":"Linux","optional":true},{"name":"Red Hat","optional":true}],"status":"live","first_seen_at":"2026-08-13T18:45:11Z","employer_posted_date":"2026-09-02","last_verified_at":"2026-10-13T22:06:57Z","board_verified":true,"closed_at":null,"days_open":61,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":61},"description":"At Excelity, we're passionate about delivering innovative technology solutions that help businesses thrive. Whether you're looking to streamline your operations, improve efficiency, or enhance customer engagement, our team of experienced professionals is here to help. So why wait? Visit excelity.io today to learn more about how we can help you achieve your goals and take your business to the next level.\nExcelity is seeking a ISSE for a project responsible for building the next generation Mission Integration System for an exciting Government customer with a very critical mission. The candidate will work with the engineering team and customer to ensure successful development of high profile, complex, technical deliverables that are core to the continued success of our award-winning projects.\nRequired Clearance: TS/SCI with CI Poly\nDescription:\nDesign and implement safety measures and controls. Monitor network activity to identify vulnerable points. Address privacy breaches and malware threats.\nSupport the Assessment and Authorization (A&A) processes and Information Assurance documentation for multiple analytic and mission systems across all CLINs\nGenerate and maintain the complete security Body of Evidence (BoE) while leading the A&A activities according to the Risk Management Framework (RMF) processes (ICD 503, CNSSI-1253, NIST 800-37, NIST 800-53, etc.) for all multiple information systems\nAuthor, complete and maintain the System Security Plan (SSP) within XACTA\nDevelop the Security Controls Traceability Matrices (SCTM), and the Security Test Plan (STP) procedures within Xacta.\nAnalyze existing security systems and make recommendations for changes or improvements\nPrepare reports and action plans if a security breach does occur\nMonitor the network and provide early warning of abnormalities or problems\nCommunicate the system status and keep users informed of downtime or changes to the system\nExperience working with software developers and architects to understand security requirements\nExperience guiding the application developers on security policy, identifying security requirements, providing technical guidance for the satisfaction of requirements\nExperience creating and managing the plan of action and milestones (POA&Ms), and working with project managers and engineers to develop schedules and engineering actions that mitigate open findings\nExperience supporting the Continuous Monitoring of operational systems; experience monitoring and auditing operational systems for proper use\nLog Review/Analysis using SIEM tools (Splunk, etc.)\nVulnerability Analysis and Review (ACAS, Prisma, SonarQube, JFrog X-Ray, GitLab Code Quality)\nDISA STIGs and STIG Viewer experience\nRequired Skills:\n9+ years supporting Assessment and Authorization (A&A) and information assurance processes and documentation using RMF, BS degree; 7 years of experience with a masters; an additional 4 years of experience required in lieu of a degree\nHands-on experience to validate control implementations and test procedures\nKnowledge of current security risks and protocols\nWillingness to work outside of standard hours if circumstances require\nDoD Approved 8140 Baseline Certifications (eg, Security+) certifications\nRMF, Xacta experience\nWork 100% onsite in a secure environment\nDesired Skills:\nExperience working with AWS/Google cloud-hosted information systems or applications\nExperience working with Containerized Systems or Applications\nExperience working with Redhat or CentOS Linux operating systems\nExperience working in a DevSecOps environment and tool chain\nBenefits:\nCompetitive salary\nFlexible work schedule\n100% Health, Dental, Vision, and Life Insurance plans with Flexible Spending Account (FSA)\nLong and Short-term disability coverage\nGenerous paid vacation and holiday time\nSafe Harbor 401(k) Retirement Plan with 6% Employer matching contributions\nReimbursement for professional and training development\nCompany-paid memberships to professional organizations\nExcelity is an Equal Opportunity Employer","description_format":"text","description_chars":4031,"description_truncated":false,"requirements":{"experience_years_min":7,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":true,"languages":[]},"benefits":["Flexible schedule","Life insurance","Retirement plans"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-13T14:06:01Z"}],"visa":[],"liveness":{"score":12,"band":"cold","label":"Long shot","p_open":1,"p_active":0.428,"p_room":0.28,"age_days":61,"expected_fill_days":22,"reasons":["conf:0","win:tail","crowd:"],"computed_at":"2026-10-13T23:01:35Z"},"pay":null,"html_url":"https://alion.io/job/excelity-information-systems-security-engineer","json_url":"https://alion.io/job/excelity-information-systems-security-engineer.json","meta":{"generated_at":"2026-10-13T23:01:35Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":35134,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4422753},"rest":"https://alion.io/mcp/rest/get_company?id=4422753"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fexcelity-information-systems-security-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fexcelity-information-systems-security-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fexcelity-information-systems-security-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/excelity-information-systems-security-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fexcelity-information-systems-security-engineer"}]}