---
title: 'Contractor Special Security Officer (CSSO) / Facility Security Officer (FSO) at STR'
canonical: 'https://feeny.ai/job/contractor-special-security-officer-csso-facility-security-officer-fso-str-s3qbypsraz4c'
type: 'job'
last_seen: '2026-09-11'
---

# Contractor Special Security Officer (CSSO) / Facility Security Officer (FSO) at STR

- **Company:** STR
- **Location:** Denver, CO
- **Posted:** 2026-08-13
- **Last confirmed live:** 2026-09-11
- **Apply:** https://job-boards.greenhouse.io/systemstechnologyresearch/jobs/4704484006

## Job description

Job Requisition: Contractor Special Security Officer (CSSO) / Facility Security Officer (FSO) Location: Broomfield, CO Clearance Requirement: Active Top Secret with SAP/SCI eligibility

Position Summary

STR seeks an experienced Contractor Special Security Officer (CSSO) to implement security policies and standards for classified Sensitive Compartmented Information (SCI) and Special Access Programs (SAP) at our new Broomfield facility. The CSSO will also be the Facility Security Officer (FSO) for the Industrial Security Program and maintain compliance with NISPOM and all other federal security requirements.

Essential Duties and Responsibilities

CSSO Responsibilities:

- Maintain a robust security posture and compliance for multiple SCI and SAP classified contracts in accordance with DoDM 5205.07, ICD 705, and IC/DOD security policies.
- Maintain accurate personnel security records in SIMS, JADE, and Scattered Castles.
- Conduct self-inspections, support internal staff assistance visits, and prepare for government compliance inspections.
- Develop, review, and implement security policies, Standard Operating Procedures, Program Protection (P2), OPSEC, and transportation plans.
- Maintain classified material accountability.
- Prepare, interpret, and implement DD254 requirements.
- Interpret and apply security classification guidance.
- Investigate and document security incidents and implement corrective actions.
- Provide security training to staff: initial/refresher briefings, debriefings, and foreign travel briefings.
- Implement the Construction Security Plan as the Site Security Manager for new SCIF/SAPF and Open Storage Area construction project.

FSO Responsibilities:

- Implement and ensure full compliance with NISPOM (32 CFR Part 117), FOCI, ITAR, and related government/contractual security requirements.
- Manage personnel clearances via DISS/NBIS, onboarding, indoctrination briefings, debriefings, and continuous vetting.
- Support KMP requirements and maintain Facility Security Clearance (FCL) records.
- Responsible for physical security systems: access control, alarms, secure storage.
- Responsible for classified material receipt, storage, transmission, and destruction while maintaining accurate accountability records.
- Prepare, issue, and track contract/subcontract DD254 forms.
- Conduct annual self-inspections and prepare for DCSA vulnerability assessments.
- Develop and deliver security and insider threat awareness training.
- Report security incidents, suspicious contacts, and foreign travel, and compliance with federal policies.

Required Qualifications

- U.S. Citizenship required.
- Active Top Secret security clearance with SAP/SCI eligibility.
- Minimum 5 years of experience as a CSSO, FSO, or Alternate FSO in the defense industry.
- Bachelor’s degree preferred, or equivalent relevant security experience.
- Completion of DCSA STEPP FSO Program Management Curriculum within 6 months of start date.
- Demonstrated knowledge of NISPOM, ICD 705, DoDM 5205.07, FOCI, ITAR, and relevant standards.
- Proficiency in DISS, NBIS, NISS, eQIP, SIMS, JADE, Scattered Castles, and MS Office.
- Experience in interpreting and implementing security classifications, contracts, and incident response/mitigation.
- Successful completion of CDSE’s “Intro to SAPs.”
- Strong written and oral communication skills; ability to discreetly/diplomatically manage sensitive and complex communications.

## Preferred Skills

- Industrial Security Professional (ISP) or ASIS Certified Protection Professional (CPP) certification.
- COMSEC Custodian and/or Insider Threat Program Officer (ITPSO) experience.
- Experience in classified information technology and physical/technical security.

## Key Competencies

- Strong independent judgment and compliance orientation.
- Expertise in security policy interpretation and development.
- Excellent verbal and written communication skills.
- Ability to manage complex or sensitive communication scenarios.

Physical Demands / Work Environment

- Onsite position in Broomfield, CO.
- Ability to stand, bend, move throughout the facility for audits/inspections.
- Occasional travel (approx. 5–10%) as required.

Full-Time Salary Range: $125,000 to $155,000

The salary range listed is based on external market data. Offers are based on factors, such as but not limited to, the candidate’s experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions.

STR is a growing technology company with locations near Boston, MA, Arlington, VA, near Dayton, OH, Melbourne, FL, Carlsbad, CA, Atlanta, GA, and Denver, CO. We specialize in advanced research and development for defense, intelligence, and national security in: cyber; next generation sensors, radar, sonar, communications, and electronic warfare; and artificial intelligence algorithms and analytics to make sense of the complexity that is exploding around us.

STR is committed to creating a collaborative learning environment that supports deep technical understanding and recognizes the contributions and achievements of all team members. Our work is challenging, and we go home at night knowing that we pushed the envelope of technology and made the world safer.

STR is not just any company. Our people, culture, and attitude along with their unique set of skills, experiences, and perspectives put us on a trajectory to change the world. We can't do it alone, though - we need fellow trailblazers. If you are one, join our team and help to keep our society safe! Visit us at [www.str.us](http://www.str.us/) for more info.

STR is an equal opportunity employer. We are fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws.

If you need a reasonable accommodation for any portion of the employment process, email us at appassist@str.us and provide your contact info.

Pursuant to applicable federal law and regulations, positions at STR require employees to obtain national security clearances and satisfy the requirements for compliance with export control and other applicable laws.

## About STR

## Company Overview
- **One-liner**: STR (Systems & Technology Research) develops and applies advanced technology to solve emerging national security challenges for the U.S. Department of Defense and intelligence community.
- **Entity Type**: Private (employee-owned)
- **Headquarters**: Woburn, Massachusetts, United States
- **Founded**: 2010
- **Founders**: Not publicly available

## Core Business
- **Primary industry/industries**: National security technology, defense, cybersecurity, sensing, analytics, systems engineering
- **Target customers**: U.S. Department of Defense, intelligence community, government agencies (B2G)
- **Mission or purpose statement**: “Making the world a safer place” by delivering high-impact technology solutions to the nation’s hardest problems.

## Products & Services
- **Cyber**: Applies reverse engineering, vulnerability assessment, formal methods, and AI/ML to solve critical cybersecurity and operational problems for the DoD.
- **Sensors**: Develops hardware and algorithm prototypes for radar, underwater acoustics, electronic warfare, and advanced RF/EOIR sensing concepts.
- **Analytics & C2**: Transforms information into advantage through command & control, autonomous systems, machine learning, graph analytics, and data visualization.
- **Systems Development**: Delivers resilient, high-impact capabilities at scale using model-based systems engineering, DevSecOps, and mission-focused integration.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Annual Revenue $100M–$500M (LinkedIn estimate)
- **Notable Investors/Partners**: Employee-owned; primary customer is the U.S. Department of Defense. Key talent sources include Leidos, L3Harris, BAE Systems, MITRE, RTX, Draper, and MIT Lincoln Laboratory.
- **Growth Signals**: Headcount grew 15% YoY (644 employees); active job postings increased 155.8% year-over-year (133 current openings); operates 7 U.S. offices.

## Competitive Advantages
- **Employee-owned structure** aligns incentives with long-term mission impact rather than short-term returns.
- **Multi-disciplinary expertise** spanning cyber, sensors, analytics, and systems engineering enables integrated solutions.
- **“The STR Triangle”** – combines world‑renowned researchers, growing talent, and skilled engineers to rapidly mature ideas into fielded capabilities.
- **Meeting‑free Fridays** and flexible schedules support deep technical work and work‑life balance.

## Strategic Focus
- Continue to solve emerging national security challenges by investing in AI/ML, autonomous systems, cyber resilience, and advanced sensing.
- Scale delivery through model‑based systems engineering and DevSecOps practices.
- Attract and retain top technical talent by fostering a culture of purpose, diversity, and professional growth.

## Why Work Here
- **Culture**: “Choose‑your‑own‑adventure” career model – employees can pursue research, product development, engineering, or management paths. Emphasis on unconventional thinking, diverse perspectives, and real impact.
- **Remote/Hybrid**: Some roles are remote (e.g., Lead Mission Engineer Full Stack); most positions are on‑site at one of seven U.S. locations (Woburn MA, Arlington VA, Dayton OH, Carlsbad CA, Palm Bay FL, San Diego CA, Melbourne FL).
- **Notable perks**: Great health/dental/vision coverage, generous 401k matching, tuition reimbursement, results‑based bonuses, active interest groups, social events, snacks & coffee. Interns focus on real‑world problems, not busy work.
- **Engineering culture**: Strong mentorship, collaboration with national security experts, and opportunities to work on cutting‑edge technology from research through deployment.

## Sources
1. [str.us](https://str.us/)
2. [str.us/careers](https://str.us/careers/)
3. [str.us/life-at-str](https://str.us/life-at-str/)
4. [job-boards.greenhouse.io/systemstechnologyresearch](http://job-boards.greenhouse.io/systemstechnologyresearch)
5. [linkedin.com/company/str-us](https://www.linkedin.com/company/str-us)

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