Full-Time

Systems Security Engineer II

Posted on 11/1/2025

Sierra Nevada Corporation

Sierra Nevada Corporation

1,001-5,000 employees

Aerospace and defense contractor; C5ISR systems

Compensation Overview

$94.3k - $129.7k/yr

+ Compensation varies depending on a wide array of factors + The disclosed range estimate may be adjusted for any geographic differential

Company Does Not Provide H1B Sponsorship

Lone Tree, CO, USA

In Person

US Top Secret Clearance Required

Category
IT & Security (4)
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Required Skills
Linux/Unix
Requirements
  • Bachelor's degree in Systems Security, Network Engineering, Information Technology, or related Engineering discipline and typically 2+ years of relevant experience
  • A higher-level degree may substitute for experience
  • Related experience may be considered in lieu of required education
  • Superb communication skills requested, along with ability to work with other vendors, contractors, and DoD organizations to achieve best results
  • Polished and professional writing skills demonstrated by the creation of detailed reports and meaningfully organized data that allows senior leadership to make rapid assessments and decisions
  • Always exhibits an attitude that promotes a positive work environment in high paced, challenging circumstances Solution-oriented view to any challenge
  • Understanding of and experience with change and configuration management principles and policies while adhering to strict guidelines and policy set forth by the DoD
  • Experience with both Windows or Linux operating systems
  • DoD 8140 Certification (Ex: CompTIA Security+, CompTIA CySA+, CompTIA CASP+/SecurityX, CISA, ISC2 SSCP etc.)
  • Active Secret U.S. Security Clearance with ability to Obtain Top Secret
Responsibilities
  • Design, test, and implement secure classified information systems, network, environments, and capabilities
  • Manage and engineer cybersecurity capabilities at SNC including cybersecurity network tools, data loss prevention, monitoring and visibility tools, enterprise system agents, etc.
  • Ensure comprehensive documentation of information systems, functionalities, compliance, standards, and processes
  • Conduct risk and vulnerability assessments; develop and implement security controls
  • Work closely with other teams across SNC, collaborating to perform security assessments, provide guidance, and foster a culture of security at SNC
  • Participate in acquisition meetings (PMR, PDR, CDR, etc.), concept of operation (CONOP) working groups, change boards, technical exchange meetings and other similar activities
  • Assist in the design and deployment of systems and networks that encompass multiple enclaves to include those with differing data protection/classification requirements IAW NIST SP 800-53, ICD 503, RMF, and CNSSI 1253
  • Employ best practices when implementing security requirements for information systems including Model Based System Engineering (MBSE) methodologies, system/security engineering principles, secure design, secure architecture, and secure coding techniques
Desired Qualifications
  • Proven track record of maintaining the confidentiality of high-sensitivity projects and data.
  • Ability to perform critical-incident response
  • Knowledge of DoD, government contracting and/or public auditing, policies, standards, and procedures
  • Ability to read and interpret security and technical documentation
  • Strong Windows, Linux, and Azure IL4/6 Background
  • Experience with STIG
  • Strong knowledge of Infrastructure as Code technologies and principles
  • Experience with tools like Terraform and Ansible
  • Strong scripting and automation skills, with experience using scripting languages such as Python, Bash, or PowerShell.
  • Strong analytical and problem-solving skills, with the ability to identify and address potential vulnerabilities and threats.
  • Experience implementing and maintaining compliance controls.
  • Experience with Red Hat Enterprise Linux and Windows Server virtualized administration and deployment.
Sierra Nevada Corporation

Sierra Nevada Corporation

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Sierra Nevada Corporation (SNC) is an aerospace and defense contractor that secures and executes U.S. government contracts with DoD and NASA. It designs and modifies aircraft systems and develops C5ISR solutions, backed by electronics, engineering, and manufacturing capabilities. The company differentiates itself through a long history, in-house integrated capabilities, and strategic acquisitions that focus on government needs. Its goal is to win and execute complex national security and space missions by delivering end-to-end aerospace and defense systems.

Company Size

1,001-5,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Sparks, Nevada

Founded

1963

Simplify Jobs

Simplify's Take

What believers are saying

  • Vindler 2.0 scales to 20+ satellites, capturing DoD RF intelligence demand by 2028.
  • $13B SAOC contract through 2036 replaces E-4B fleet with SNC-led integration.
  • NRO selects Vindler for RF study, unlocking expanded intelligence procurement contracts.

What critics are saying

  • SpaceX Starshield erodes Vindler market share in DoD RF contracts within 12 months.
  • Boeing protests SAOC contract, delaying award 6-12 months via GAO challenges.
  • DoD FY2027 NDAA mandates redesign SNC C5ISR electronics, slashing margins immediately.

What makes Sierra Nevada Corporation unique

  • SNC excels as privately owned mid-tier prime contractor with rapid innovation agility.
  • SNC delivers open architecture C5ISR systems across air, space, and cyber domains.
  • SNC specializes in mission-tailored aircraft modifications for DoD and NASA contracts.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

401(k) Retirement Plan

401(k) Company Match

Paid Vacation

Company News

Defence Leaders Limited
Apr 16th, 2026
U.S. Army boosts Gray Eagle drone with advanced electronic intelligence upgrade.

U.S. Army boosts Gray Eagle drone with advanced electronic intelligence upgrade. Image: General Atomics The U.S. Army has awarded General Atomics Aeronautical Systems (GA-ASI) a contract to equip its MQ-1C Gray Eagle Extended Range drone with upgraded electronic intelligence capabilities, strengthening its ability to detect and locate enemy air defence systems. The new electronic intelligence (ELINT) sensor package will allow Gray Eagle ER aircraft to operate beyond the reach of adversary threats while scanning deep into contested airspace. The upgrade directly supports the Army's Integrated Air Defence System (IADS) mission, feeding real-time intelligence to ground commanders. GA-ASI President David R. Alexander said the combination of long-range detection and the platform's endurance ensures commanders can track when an adversary IADS is active. He added that Gray Eagle's open systems architecture makes the integration straightforward but operationally significant, according to GA-ASI. Targeting enemy air defences. The ELINT sensor identifies and geo-locates critical threats essential to Joint Force Operations. GA-ASI will partner with Sierra Nevada Corporation (SNC) and the Capability Program Executive for Intelligence and Spectrum Warfare to integrate advanced radar detection and signal collection technology into the platform. The upgrade enhances Gray Eagle ER's value in contested environments where identifying and suppressing enemy air defences is a prerequisite for broader operations. By keeping the drone outside threat envelopes, the Army also reduces risk to crewed aircraft operating in the same battlespace, a key objective in modern manned-unmanned teaming concepts. A platform built for multi-domain operations. The ELINT upgrade is one layer of a broader sensor modernisation effort. Gray Eagle ER has already demonstrated modernised Communications Intelligence (COMINT), Synthetic Aperture Radar and Moving Target Indicator (SAR/MTI) capabilities, and Mobile Ad Hoc Network (MANET) radios across multiple Army exercises. These capabilities align with the Army's C5ISR Modular Open Suite of Standards (CMOSS) architecture, a framework designed to allow rapid integration of new sensors, payloads, and weapons as threats evolve. The approach gives programme managers flexibility to adapt the platform without costly redesigns. Proven in contested environments. Gray Eagle ER demonstrated its multi-mission potential during Project Convergence Capstone-5 (PCC-5), the Army's large-scale modernisation experiment held last year. Operating in an electronically contested environment, the aircraft conducted persistent Detect, Identify, Locate, and Report (DILR) missions while simultaneously providing aerial mesh network support to manoeuvre units. The exercise highlighted how the platform can bridge communication gaps caused by terrain or range limitations, connecting soldiers and launched effects that might otherwise lose contact. Critically, it did this while remaining resilient to jamming. PCC-5 also demonstrated the platform's human-machine interface improvements, which reduce the cognitive burden on operators by automating certain inputs. Gray Eagle ER cross-cued ELINT, COMINT, SAR, and Aerial Tier Network Expansion (ATNE) data during the exercise, boosting force survivability across the Combined Joint Task Force. Strategic context. The upgrade reflects broader U.S. Army efforts to modernise its unmanned aerial systems for high-end conflict scenarios. As near-peer adversaries invest heavily in integrated air defence networks, the ability to detect, locate, and characterise those systems from standoff range has become a critical operational requirement. Gray Eagle ER's persistent endurance and open architecture position it as a central node in the Army's emerging intelligence and targeting networks.

Tendernews
Sep 25th, 2025
SNC, Embraer Ink A-29 Super Tucano Deal for US Foreign Military Sale

Sierra Nevada Corporation (SNC) has signed an agreement to purchase an A-29 Super Tucano light attack aircraft from Brazilian aircraft manufacturer Embraer.

Halldale Group
Sep 24th, 2025
Training Role Secured in US AOC Program

CAE Defense & Security has been selected by Sierra Nevada Corporation (SNC) to provide training systems for the Survivable Airborne Operations Center (SAOC) program with the U.S. Air Force.

Insider Monkey
Aug 20th, 2025
AeroVironment (AVAV) Partners with Sierra Nevada for Air Defense System

On August 7, the company announced that it had formed a strategic partnership with Sierra Nevada Corporation (SNC) to develop an advanced air and missile defense system for the Golden Dome for America (GDA) initiative.

ExecutiveBiz
Jun 27th, 2025
Joe Kopacz Named AI Tech VP at SNC

Sierra Nevada Corp. has named Joe Kopacz as its first vice president of artificial intelligence technology.

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