Cyber Security Engineer III
System One
Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire Clearance Requirement: Active TS/SCI required and ability to obtain poly Job Summary We are seeking a Cyber Security Engineer to support a mission critical NGA cybersecurity program in St. Louis, MO. This role will provide cyber threat intelligence, advanced cybersecurity analytics, security operations support, and incident response coordination across government systems and networks. The Cyber Security Engineer will collect, analyze, and distribute threat intelligence from government sources, commercial feeds, open source reporting, and partner organizations to improve situational awareness of the cyber threat environment. This role will also support cybersecurity analytics, reporting, detection tuning, operational recommendations, and security monitoring activities for customer systems and networks. This is a strong fit for someone with hands on cyber operations experience across HBSS, firewalls, IDS, IPS, VPNs, network security tools, threat intelligence, incident analysis, and cybersecurity reporting. Key Responsibilities Provide cyber threat intelligence support, including the collection, fusion, analysis, creation, and distribution of threat intelligence from government entities, commercial feeds, open sources, and partner organizations. Develop and disseminate threat reports, tippers, and situational awareness products to internal and external stakeholders based on events, alerts, and incidents affecting customer systems and networks. Perform advanced cybersecurity analytics by aggregating and analyzing security data, products, and information to identify trends, patterns, anomalous activity, and potential threats. Provide operational recommendations, visualizations, tuning requests, and custom signature creation to the CSOC and other stakeholders. Implement and monitor security measures for communication systems and networks while ensuring systems and personnel follow established security standards and government requirements. Support network security activities involving HBSS, firewalls, Intrusion Detection Systems, Intrusion Prevention Systems, VPNs, and other point of presence security tools. Conduct performance analysis of information systems security incidents and support security incident response activities. Support Network Intrusion Detection and Forensics activities. Assist with Continuity of Operations and Disaster Recovery planning. Support certification activities for information systems and networks. Provide cybersecurity services during core 12x5 support hours and participate in on call support with a two hour response requirement during non core hours. Support Public Key Infrastructure, Electronic Key Management System operations, and other information security duties as needed. Develop new concepts, processes, and solutions to improve cybersecurity operations. Analyze root causes, resolve technical issues, and provide guidance to junior technicians and specialists. Work individually, participate on integrated teams, and potentially lead tasks, projects, or small teams. Required Qualifications Active TS/SCI clearance. U.S. Citizenship. Bachelor’s degree in a technical field such as Information Technology, Information Systems, Computer Science, Cybersecurity, or a related discipline. High School diploma or GED with 10 years of relevant cybersecurity experience. Associate degree with 8 years of relevant cybersecurity experience. Bachelor’s degree with 6 or more years of relevant cybersecurity experience. Experience working in cybersecurity operations with tools and technologies such as HBSS, firewalls, Intrusion Prevention Systems, Intrusion Detection Systems, VPNs, and related security operations platforms. Experience supporting cybersecurity monitoring, analysis, threat intelligence, incident response, or security operations center environments. Ability to analyze cybersecurity events, alerts, incidents, and threat reporting to identify risks and provide actionable recommendations. Preferred Qualifications IAT Level III certification. DoD 8140.01 and DoD 8570.01-M IAT Level III certification. CSSP Analyst certification. Ability to obtain required DoD 8140 / 8570 certifications within 6 months of starting if not already held. Master’s degree in a technical field. TS/SCI with Polygraph. Experience supporting NGA, DoD, intelligence community, or mission critical federal cybersecurity environments. Experience creating cyber threat reports, tippers, custom signatures, tuning recommendations, or operational threat intelligence products. Benefits Coverage (Eligible Employees) Health insurance options including medical, dental, vision, spending accounts, life insurance, and voluntary plans. Participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law. #J-18808-Ljbffr
- ...Job Title: Cyber Security Engineer Location: St. Louis, MO Work Model: Onsite Position Type: 6 Month Contract to Hire... ...actionable recommendations. Preferred Qualifications IAT Level III certification. DoD 8140.01 and DoD 8570.01-M IAT Level...SuggestedContract workLocal area
- ...June 2024, data as of December 2023. Compensation provided for using, not obtaining, the rating. Team Overview The Engineer III, System Security Engineer plays a key role in protecting the firm’s enterprise computing environment by designing, implementing, and...SuggestedTemporary workWork at officeHome officeFlexible hours
- ...Team Overview The Engineer III, System Security Engineer plays a key role in protecting the firm’s enterprise computing environment by designing, implementing, and operating foundational security controls across endpoints, operating systems, and device access. This is...SuggestedTemporary workWork at officeHome officeFlexible hours3 days per week
$75.2k - $158.1k
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...Cyber Security Engineer job at Peraton. Saint Louis, MO. Program Overview Engineering modernization and integration practices to include Digital Engineering and Agile at Scale for all of NGA, NSG, and ASG. About The Role We are seeking an Expert Cyber Security Engineer...SuggestedFor contractorsWork experience placementInternship$112k - $179k
...Cyber Security Engineer Job Locations US-MO-St Louis Requisition ID 2026-166006 Position Category Engineering Clearance Top Secret/SCI w/Poly Responsibilities Expert Cyber Security Engineers capture and refine information...Contract workFor contractorsWork experience placementShift work- ...Aqua IT in St. Louis is seeking a Cyber Security Engineer at multiple levels (Jr-Sr). The role will focus on cybersecurity engineering, risk management, and compliance across both cloud and on-prem systems. Ideal candidates should possess a Bachelor's degree with 5+ years...
$120.64k - $197.6k
...Overview This position plays a hands-on role securing systems that support critical Defense and Intelligence missions. This position is focused on applying risk management frameworks, engineering security controls, and maintaining system authorizations for cloud...RelocationRelocation package- ...All Jobs • Cyber Security Engineer (Jr-Sr) Overview We have several openings at multiple levels (Jr-Sr). This role focuses on cybersecurity engineering, risk management, and compliance across cloud and on-prem systems, supporting system authorization, vulnerability management...
- ...Cyber Security Operations Specialist III EOE Statement: We are an equal employment opportunity employer. All qualified applicants will receive consideration... ...security. TCS will provide innovative design, engineering, procurement, implementation, operations, sustainment...Full timeContract workPart timeWorldwide
$85.1k - $161.58k
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$97.53k - $113.78k
...Industrial Engineer III Date: May 30, 2026 Location: St. Louis, MO, US Company: Gulfstream Aerospace Corporation Industrial Engineer III in GAC St. Louis Unique Skills: Preferred candidate will have an aviation background and have experience using Catia or...Local areaRelocation package$85k - $115k
...Electrical Engineer III Location: Lakewood, CO / Fort Collins, CO / Avon, CO / Belleville, IL / St. Louis, MO / Milwaukee, WI / Schaumburg... ...designed to promote employee health, wellness, and financial security. Our offerings include medical, dental, and vision plans,...Flexible hours- ...Mid-Level Cyber Security Engineer support the refinement of information security requirements and ensure that the requirements are integrated into information technology component products and information systems through purposeful security architecting, design, development...Work experience placement
- ...Mannik Smith Group is seeking a Transportation Project Engineer III/IV to join their team in Clayton, MO. The ideal candidate will have significant experience in transportation engineering, with a focus on design and project delivery. Key responsibilities include leading...
- Job Description As a Mechanical Engineer III, you’ll play a key role in designing mechanical systems for complex facilities while also taking ownership of project scope and mentoring junior team members. This is a great opportunity for an engineer who wants to grow into...For contractors
$85k - $115k
...Job Description Job Description Position: Mechanical Engineer III Location: Seattle, WA / Newport, KY / Orlando, FL / Belleville,... ...designed to promote employee health, wellness, and financial security. Our offerings include medical, dental, and vision plans, employee...Flexible hours$70.5k - $80.5k
...a disability, contact this employer to ask for an accommodation or an alternative application process. Traffic and Safety Civil Engineer III Full Time St Louis, MO, US Salary: $70,500.00 To $80,500.00 Annually Responsibilities As a Surface Transportation Civil Engineer...Full timeWork at office- Process Engineer III/ IV - Small Molecule/ Oligo/ Peptide CRB is a leading provider of sustainable engineering, architecture, construction and consulting solutions to the global life sciences and food and beverage industries. CRB is a privately held company with a history...Worldwide
- Process Engineer III CRB is a leading provider of sustainable engineering, architecture, construction and consulting solutions to the global life sciences and food and beverage industries. Our more than 1,100 employees provide best-in-class solutions that drive success...
$70.5k - $80.5k
...Job Description Job Description Crawford, Murphy & Tilly is seeking a Civil Engineer III with a background in traffic and safety engineering to join our Surface Transportation group in the St. Louis, MO office. This is not a remote position. We are a fast-growing...Work experience placementWork at office- ...Description EPS Engineering Services, a member of the Asplundh federation of companies, is hiring for a Design Engineer III, Substation Engineering, for our Maryland Heights, MO location... ...’ health, well‑being, and financial security. Medical, dental, and vision benefits...Temporary work
$59.7k - $89.56k
...offices in Creve Coeur. This position will be filled at the I, II or III level depending on the qualifications of the selected candidate... ...and budgets for roadway projects. Applies appropriate engineering principles, practices and regulatory requirements to roadway design...Full timeTemporary workInternshipRelocation$80k - $95k
...design, and construction management services to water, sewer, and utility districts and municipalities. We are seeking a Project Engineer (III/IV) in Water/Wastewater to serve our clients and community. This role requires expertise in designing treatment facilities,...For contractorsLocal areaFlexible hours$70.5k - $80.5k
Crawford Murphy & Tilly Inc is seeking a Traffic and Safety Civil Engineer III in St. Louis, MO. This full-time role involves working closely with senior staff on municipal infrastructure projects including roadway expansion and transportation planning. A Bachelor's degree...Full time- ...Loffler Companies is seeking an IT Services Engineer III to join its Managed Services team in Saint Louis Park, Minnesota. This role focuses on delivering exceptional technical support, primarily regarding Microsoft 365 migrations and Intune configurations. Candidates...
- Crawford, Murphy & Tilly, Inc. is seeking a Civil Engineer III specializing in traffic and safety engineering in St. Louis, MO. The role requires a Bachelor's degree in Civil Engineering and 2-8 years of related experience. Responsibilities include supporting various infrastructure...
- ...along with their operating systems and databases? As a Systems Engineer III at Spectrum, you will manage the Application Administration of... ...systems via CPI or other middleware. Ensure compliance with security standards, including user access management and role administration...Work experience placementWork at officeLocal areaVisa sponsorship
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