---
title: 'Principal Information System Security Engineer (ISSE) at Redhorse Corporation'
canonical: 'https://feeny.ai/job/principal-information-system-security-engineer-isse-redhorse-corporation-kmsmvetavzt8'
type: 'job'
last_seen: '2026-10-16'
---

# Principal Information System Security Engineer (ISSE) at Redhorse Corporation

- **Company:** Redhorse Corporation
- **Location:** Chantilly, VA
- **Compensation:** $160k–$185k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-08-10
- **Last confirmed live:** 2026-10-16
- **Apply:** https://jobs.lever.co/redhorsecorp/de23da50-d33e-4912-9c49-b63341cac076

## Job description

## About the Organization

Now is a great time to join Redhorse Corporation. We are a solution-driven company delivering data insights and technology solutions to customers with missions critical to U.S. national interests. We’re looking for thoughtful, skilled professionals who thrive as trusted partners building technology-agnostic solutions and want to apply their talents supporting customers with difficult and important mission sets.

## Key Responsibilities

- Act as a recognized authority within the company, providing technical and programmatic Information Assurance (IA) services for complex network and information security systems.
- Work on unusually complex technical problems, providing highly innovative solutions that align with mission goals.
- Lead efforts to capture new business through high-level technical work, research, and capability briefings to prospective clients.
- Design, research, and develop highly advanced applications that may result in new product or business opportunities for Redhorse.
- Determine and pursue courses of action necessary to obtain desired security and business results with minimal supervision.
- Design, develop, and implement security requirements within an organization’s business processes.
- Prepare documentation using accepted guidelines such as DITSCAP, DIACAP, NIACAP, NIST SP 800-37, and DCID 6/3 frameworks.
- Prepare and execute Security Test and Evaluation (ST&E) plans.
- Provide certification and accreditation (C&A) support and conduct complex risk and vulnerability assessments.
- Analyze policies and procedures against Federal laws and regulations, providing recommendations to close critical security gaps.
- Develop and complete system security plans, contingency plans, and risk mitigation strategies.
- Recommend and implement system enhancements to improve security deficiencies.
- Develop, test, and integrate computer and network security tools.
- Secure system configurations, install security tools, and scan systems to determine and report compliance results.
- Conduct security program audits and develop solutions to lessen identified risks.
- Develop strategies to comply with privacy, risk management, and e-authentication requirements.
- Provide IA support for the development and implementation of security architectures to meet evolving security requirements.
- Provide expert assistance in computer incident investigations and vulnerability assessments.

Required Experience/Clearance

- Must have an active TS/SCI with FS Poly security clearance.
- Bachelor’s degree  (or equivalent) with 12+ years of experience OR a Master’s degree with 10+ years of experience.
- Recognized expertise in performing a wide variety of information assurance and information systems security engineering duties.
- Extensive experience in the certification and accreditation of information systems using DIACAP, NIACAP, NIST SP 800-37, and/or DCID 6/3 frameworks.
- Proven track record of solving unusually complex technical problems with innovative solutions.
- Demonstrated ability to lead technical briefings and support business development/capture efforts.

Desired Experience

We encourage all candidates who meet the basic requirements to apply, even if you do not have any of the following experience:

- Advanced security certifications such as CISSP-ISSEP or CISM.
- Experience with Cloud Service Provider (CSP) security architectures (AWS, Azure, or Google Cloud).
- Familiarity with DataBricks, GitLab, Spark, or Jira in a secure government environment.
- Experience with automated compliance-as-code and DevSecOps practices.
- Previous experience in a consulting or advisory role for high-level government stakeholders.

The salary range provided for this position represents the anticipated base salary for successful candidates. Actual compensation will be determined based on a variety of factors, including relevant experience, education, certifications, skills, security clearance level, geographic location, market conditions, and internal equity. In addition to base salary, eligible employees may participate in Redhorse's comprehensive benefits programs and may be eligible for performance-based or other incentive compensation, where applicable.

Redhorse Corporation is an equal opportunity employer. All qualified applicants will receive consideration for employment and will not be discriminated against on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, veteran status, disability, or any other protected class.

If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to access job openings or apply for a job on this site as a result of your disability. You can request reasonable accommodations by contacting Talent Acquisition at Talent-Acquisition@redhorsecorp.com

Redhorse Corporation shall, in its discretion, modify or adjust the position to meet Redhorse’s changing needs. This job description is not a contract and may be adjusted as deemed appropriate in Redhorse’s sole discretion.

## About Redhorse Corporation

## Company Overview
- **One-liner**: Redhorse Corporation is a technology and consulting firm that delivers data-driven, AI-enabled solutions to the Department of Defense and the national security community.
- **Entity Type**: Private (no public ticker; funding stage not disclosed)
- **Headquarters**: Gainesville, Virginia, USA (also has offices in Chantilly, VA and other locations)
- **Founded**: Not publicly available (no founding year found in provided sources)
- **Founders**: Not publicly available (current CEO is Noah Klemm, but founders not named)

## Core Business
- **Primary industries**: National security, defense, government services, artificial intelligence, cybersecurity, data analytics
- **Target customers**: U.S. federal government, primarily Department of Defense (DoD), intelligence agencies, and other national security organizations (B2G)
- **Mission or purpose**: To understand, define, and solve data-driven mission challenges for the warfighter and national security community, delivering intelligent systems that enable data-driven decisions.

## Products & Services
- **Intelligent Data Products as a Service**: Awarded “Awardable” status in the CDAO Tradewinds Solutions Marketplace, providing AI/ML data products on a service basis.
- **National Security Practice**: End-to-end solutions for DoD and intelligence community, including AI, data analytics, cyber analytics, network security, and operations support (e.g., for NAVWAR, OUSD(I&S), JAIC).
- **Conditions Based Maintenance Plus (CBM+)**: AI-driven predictive maintenance solutions for DoD, also assessed “Awardable” in Tradewinds.
- **Cyber Security Services**: Including ISSO, Cyber Security Engineer roles; network security and cyber analytics for naval systems.
- **Consulting & Integration**: Strategic advisory, digital transformation, acquisition integration (e.g., Mannakee Group acquisition), and post-acquisition integration support.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Not publicly available (no revenue or funding amounts found)
- **Notable Investors/Partners**: Not publicly available (no investor list in provided sources)
- **Growth Signals**: 
  - Acquired Mannakee Group (date not specified)
  - Awarded an AI contract with the Department of the Interior (DoW)
  - Assessed “Awardable” by CDAO Tradewinds for two offerings (Intelligent Data Products as a Service and CBM+)
  - Holds all five major industry certifications: CMMI Maturity Level 3 for Services, ISO 9001, ISO/IEC 20000-1, ISO/IEC 27001 (unique achievement)
  - Active hiring across multiple locations (Gainesville, VA; Chantilly, VA; Joint Region Marianas)

## Competitive Advantages
- **Unique certification portfolio**: One of few firms holding CMMI Level 3 for Services plus ISO 9001, 20000-1, and 27001 – providing government clients confidence in quality and security.
- **User-centered methodology**: Uses design thinking, lean startup, and agile development to build solutions that start with understanding the mission and user needs, rather than forcing a pre-built platform.
- **Deep domain expertise**: Decades of top-tier consulting experience across federal agencies, with a dedicated National Security Practice focused on defense and intelligence.
- **In-house technical capabilities**: Ability to build bespoke AI/ML and data solutions rather than relying solely on commercial off-the-shelf products.

## Strategic Focus
- **Expansion through acquisitions**: Recent acquisition of Mannakee Group signals a growth strategy via M&A to broaden capabilities and client base.
- **Deepening AI/ML offerings**: Continued investment in AI solutions for defense (CBM+, intelligent data products) and participation in government marketplaces like CDAO Tradewinds.
- **Strengthening national security practice**: Focus on data-driven mission challenges for DoD and intelligence community, with emphasis on warfighter support and integrated lethality.
- **Talent acquisition**: Active recruiting for cyber security, systems administration, and engineering roles, indicating growth in delivery capacity.

## Why Work Here
- **Culture of innovation**: Employees are encouraged to problem-solve, collaborate, and generate technology-driven solutions in a creative environment.
- **Work-life balance**: Flexible work hours, paid time off, and employee assistance programs; remote/hybrid options likely available (not explicitly stated but implied by flexible work hours).
- **Professional development**: Support for continued education and professional growth; company values development and growth of team members.
- **Community & environment**: Commitment to charitable sponsorship, employee volunteerism, and environmental sustainability (annual GHG emissions report).
- **Values-driven**: Core values include respect, creativity, transparency, integrity, growth mindset, and common sense; strong commitment to Equal Employment Opportunity and diversity.
- **Meaningful work**: Direct impact on national security missions – employees can see tangible results of their work for the warfighter and defense community.
- **Benefits**: Competitive medical, dental, vision; retirement plans; employee assistance programs.

## Sources
1. [redhorsecorp.com](https://redhorsecorp.com/) – Company homepage, certifications, and awards
2. [redhorsecorp.com/about](https://redhorsecorp.com/about/) – Leadership team and company background
3. [redhorsecorp.com/why-join-redhorse](https://redhorsecorp.com/why-join-redhorse/) – Culture, benefits, and values
4. [redhorsecorp.com/solutions/national-security-practice](https://redhorsecorp.com/solutions/national-security-practice/) – National Security Practice details and case studies
5. [jobs.lever.co/redhorsecorp](https://jobs.lever.co/redhorsecorp/) – Current job openings and locations

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