St. Louis, MO

Cybersecurity Jobs in St. Louis, MO

9 jobs found

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Today

Cybersecurity Analyst

GadellNet St. Louis, MO

St. Louis, MO

Today

$50k - $60k/yr Full time Cybersecurity Analysis Cybersecurity Tools Data Security

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Job Description

GadellNet is hiring a Cybersecurity Analyst to strengthen incident visibility, support information security operations, and protect company data. This onsite role in St. Louis, MO follows a steady Monday to Friday schedule (11am to 8pm CST), with a focus on investigating threats, responding to alerts, and improving security processes through documented procedures and knowledge-sharing.

Responsibilities

Investigate cybersecurity incidents, including business email compromises (BECs) and infections.
Perform a daily review of cybersecurity escalations and reported phishing emails.
Assess MDR alerts and EDR/AV alerts daily, then complete action items that result from the review.
Participate in Incident Response protocols.
Configure and analyze vulnerability assessments.
Make changes to firewalls and switches as part of network security updates.
Develop knowledge-based articles and standard operating procedures.
Stay current on cybersecurity trends, technology, and standards.

Requirements

1 to 3 years of experience in a cybersecurity-related position.
Associate-level experience with Security Awareness Training tools, including KnowBe4 (preferred).
Associate-level experience with Network Vulnerability Assessments.
Associate-level experience with AV/EDR, including SentinelOne (preferred).
Associate-level experience with SIEM/MDR, including Blackpoint MDR (preferred).
Associate-level experience with ZTNA/SASE, including Timus (preferred).
Beginner to intermediate troubleshooting knowledge of Windows OS and MacOS.
Beginner knowledge of troubleshooting Windows Server, particularly Windows Server 2019 and newer.
Beginner to intermediate knowledge of networking concepts and administration, including networking equipment management principles, subnets, DNS, DHCP, firewall concepts, network security, VPN technologies, and routing and switching.
At least 1 year experience identifying risks, corresponding controls, gaps, and applicable testing strategies.
At least 1 year experience creating and implementing security controls.
Exceptional interpersonal communication skills, with the ability to present technical ideas in a user-friendly, business-friendly way.
Astute analytical skills and demonstrable experience in technical documentation.

Technologies

KnowBe4, SentinelOne, Blackpoint MDR, Timus, Windows OS, MacOS, Windows Server 2019, Windows Server, Microsoft 365 ecosystem, Microsoft Entra, Defender, Conditional Access, Intune, CompTIA Network+, CompTIA Security+, VPN, ZTNA, SASE, SIEM, MDR, EDR, AV

Benefits

Health, vision, and dental insurance.
Paid time off, including parental leave and volunteer time.
Flexible work environment.
Access to mental health services.
Employee matching donation program.
401k and employer matching.

Desirable Skills

CompTIA Network+ and/or CompTIA Security+, or equivalent certifications.
Intermediate-level knowledge of Windows Server, particularly Windows Server 2019 and newer.
Intermediate-level knowledge of the Microsoft 365 ecosystem, especially Microsoft Entra, Defender, Conditional Access, and Intune.
An associate degree or higher in Networking and/or Cybersecurity.

Eligibility to Work in the US

GadellNet does not offer work visa sponsorship for this role.
All candidates must be legally authorized to work in the United States at the time of application.
Employment is contingent on verification of identity and eligibility to work in the United States.

Schedule

This position works Monday - Friday, 11am to 8pm CST.

Values

Make an Impact
100% Responsibility 0% Excuses
Grow or Die

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25d ago

Cybersecurity Technical Writer - AI Trainer

DataAnnotation St. Louis, MO 🇺🇸 Remote

St. Louis, MO

25d ago

$50 - $100/hr Full time Ai Content Review Ai Trainer Ai Training

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Job Description

DataAnnotation is offering a remote Cybersecurity Technical Writer - AI Trainer role that lets you contribute to shaping AI security models and evaluating AI-generated security content. This position is based in Missouri but fully remote, enabling collaboration from anywhere in the US, Canada, the UK, Ireland, Australia, or New Zealand. If you have hands-on cybersecurity experience and enjoy translating complex concepts into clear guidance, this is an opportunity to influence the next generation of AI for security applications.

Benefits

Fully remote: work from anywhere in the US, Canada, the UK, Ireland, Australia, and New Zealand.
Flexible schedule: choose which projects you take on and when you work, using your own computer from home.
Competitive pay: hourly rate of $50 to $100 USD, with potential higher bonus rates on select projects.
Impact: help shape AI technologies built for cybersecurity and security-focused training data.

Responsibilities

Evaluate AI-generated cybersecurity content, including threat analysis, vulnerability assessments, and offensive security techniques, for real-world accuracy and validity.
Design and solve security-focused technical problems used to train AI systems.
Write clear technical explanations and security-relevant code.
Provide feedback that directly shapes the next generation of AI security models.

Requirements

2+ years of hands-on experience in a cybersecurity role, such as penetration testing, red teaming, incident response, detection engineering, DFIR, malware analysis, threat intelligence, or adjacent fields, including government or military cyber operations.
Some coding experience required; comfort navigating and patching a codebase is key.
Fluency in English (native or bilingual level) with strong writing skills.
A bachelor’s degree is preferred.
Cybersecurity certifications are a plus (e.g., OSCP, CRTO, GREM, GCFA, CEH, and similar).

Additional Information

Payment is made via PayPal. We will never ask for money from you. This job is available only to residents of the United States, Canada, the United Kingdom, Ireland, Australia, and New Zealand.

Location note: Missouri (remote). This role is designed for professionals who can collaborate remotely while contributing to meaningful AI security initiatives at DataAnnotation.

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26d ago

Cyber Security Engineer - NSS Tools

CACI St. Louis, MO

St. Louis, MO

26d ago

$75k - $158k/yr Full time Cloud Platforms Cybersecurity Tools Engineer

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Job Description

Cyber Security Engineer focusing on NSS Tools and Linux systems to enhance network defense and cybersecurity capabilities, with TS/SCI clearance.

Responsibilities

Create and deploy shell scripts to automate routine system maintenance, improving efficiency and reliability.
Set up and manage system logging, including remote logging, to support thorough log analysis for troubleshooting and security monitoring.
Configure and sustain networking services, including firewall rules and SELinux policies, to ensure secure and optimized system performance.
Manage local storage using partitions and logical volumes tailored to project requirements.
Install, configure, and maintain systems, ensuring software installations, updates, and core services are kept current.
Apply knowledge of DNS, SMTP, and DHCP, and use network troubleshooting tools such as tcpdump, Traceroute, Ping, Netstat, and nslookup to diagnose and resolve issues.

Requirements

Strong Linux system administration experience, with proficiency in shell scripting and system automation.
Expertise in configuring system logging, analyzing logs for troubleshooting, and implementing secure networking services.
Familiarity with AWS services such as EC2, S3, CloudFormation, and Terraform is advantageous.
Experience with automation tools like Ansible and version control systems such as GitHub/GitLab for script and code management.
Proactive approach to system optimization and a continuous learning mindset to stay updated with the latest in Linux systems and cybersecurity.
Excellent collaboration skills, with the ability to work effectively across teams to achieve system-related goals.
Active Top Secret/SCI Clearance with experience working on US Government contracts.
DOD 8570 IAT II and CSSP Infrastructure Support certifications.
Bachelor’s degree in Computer Science, Information Technology, Computer Engineering, or Electrical Engineering.
7+ years of related experience in SEIM, network operations, network engineering, leading technology teams, leading operation cybersecurity teams, or a combination thereof.

Technologies

Linux
Shell scripting
AWS (EC2, S3, CloudFormation, Terraform)
Ansible
GitHub
GitLab
SELinux
tcpdump
Traceroute
Ping
Netstat
nslookup

Benefits

Healthcare
Wellness
Financial
Retirement
Family support
Continuing education
Time off benefits
Flexible time off
Learning and development opportunities
Competitive compensation

What You Can Expect

A culture of integrity.
An environment of trust.
A focus on continuous growth.

Location: St. Louis, MO onsite. Salary: USD 75,200 - 158,100 per year. Education: Bachelor's degree.

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30d ago

Special Agent: Cybersecurity/Technology Expertise

Federal Bureau of Investigation St. Louis, MO

St. Louis, MO

30d ago Closed

$103k - $133k/yr Full time Agent Information Security InfoSec

This position is no longer accepting applications (closed Aug 16, 2026).

Job Description

This FBI Special Agent role leverages cybersecurity and technology expertise to investigate cyber threats and protect national security, based in St. Louis, MO (onsite).

Job Details

Location: St. Louis, MO (onsite)
Salary: USD 103,326 – 133,200 per year
Salary note: Salary is commensurate with base, locality, and availability pay

Education

Bachelor's degree or higher

Responsibilities

Lead investigations into potential violations of federal law, cybersecurity concerns, and public safety matters
Apply judgment, resourcefulness, and versatility to meet investigative demands
Establish and nurture effective liaison relationships with federal, state, local, tribal, territorial, and international law enforcement partners
Maintain fitness and readiness to perform law enforcement duties

Requirements

Must be a U.S. citizen
Must be able to obtain Top Secret SCI Clearance
Must be willing to travel as required
Must meet the FBI’s Employment Eligibility requirements

How to Apply

STEP 1: Click Apply to be directed to the FBIJobs Careers website
STEP 2: Click Start to begin. You will be prompted to sign in to continue or register with FBIJobs if you don’t already have an account
STEP 3: Complete all sections of the form and attach all required documents to submit your interest
Resume: Include relevant work experience with start and end dates; resume must not exceed two pages
Supporting documents: College transcripts if education is a qualifier; Veterans: DD 214; Disabled Veterans: DD 214, SF-15, and VA letter dated 1991 or later
See site instructions for attaching documents

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1mo ago

Information Security Analyst - AI Trainer

DataAnnotation St. Louis, MO 🇺🇸 Remote

St. Louis, MO

1mo ago Closed

$50 - $100/hr Contract Ai Security Ai Training Analyst

This position is no longer accepting applications (closed Aug 14, 2026).

Job Description

DataAnnotation offers a fully remote, contract role with flexible scheduling and a meaningful opportunity to influence the future of AI security. You will help train AI security models by evaluating AI-generated content, solving security challenges, and providing feedback to shape next generation systems. This position supports remote work and accommodates diverse schedules while aligning with regional eligibility.

Location: St. Louis, MO (remote).

Job type: Contract

Benefits

Fully remote: work from anywhere in the United States, Canada, United Kingdom, Ireland, Australia, and New Zealand.
Flexible schedule: select projects and set your hours from your own computer, at home.
Competitive pay: hourly rates range from $50 to $100, with opportunities for higher bonus rates on certain projects.
Impact: help shape AI technologies built for cybersecurity and influence how these systems respond to real world threats.

Responsibilities

Assess AI-generated cybersecurity content, including threat analyses, vulnerability assessments, and offensive security material, for real world accuracy and validity.
Design and solve security oriented technical problems used to train AI systems.
Produce clear technical explanations and security relevant code.
Provide actionable feedback that informs the next generation of AI security models.

Requirements

2+ years of hands-on cybersecurity experience in roles such as penetration testing, red teaming, incident response, detection engineering, DFIR, malware analysis, threat intelligence, or related fields, including government or military cyber operations.
Some coding experience is required; comfort navigating and patching a codebase is essential.
Fluency in English with strong writing skills.
Bachelor's degree preferred.
Cybersecurity certifications are a plus (for example OSCP, CRTO, GREM, GCFA, CEH, and similar).

Note

Payment is made via PayPal. We will never ask for money from you. This role is available to candidates in the United States, Canada, United Kingdom, Ireland, Australia, and New Zealand.

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1mo ago

Cybersecurity Operations Specialist -SIEM Services (Evergreen)

General Dynamics Information Technology St. Louis, MO

St. Louis, MO

1mo ago Closed

$128k - $173k/yr Full time Analytics Arcsight Cybersecurity Tools

This position is no longer accepting applications (closed Aug 7, 2026).

Job Description

This role focuses on designing, deploying, and sustaining SIEM capabilities and analytics for mission partners, onboarding IT resources, and ensuring proper routing of audit events.

Responsibilities

Provide preventive and corrective maintenance to keep services secure, reliable, and available, including vendor RMA handling, disposal of failed equipment/software, installation and testing of new assets, and configuring new hardware/software.
Maintain system availability and reliability at a target uptime of 99.99%.
Identify and open tickets for degradations in SIEM data flows within 60 minutes of detection.
Conduct routine and vendor-recommended maintenance aligned with approved change management; maintain documentation, change logs, and service bulletin libraries in the CSOC knowledge base.
Lead emergency maintenance with urgency to minimize outages, with government approval and coordination through CSOC and ESC management.
Execute development, engineering, testing, integration, and deployment actions for major vendor revisions.
Carry out continuous engineering assessments to improve performance, effectiveness, coverage, and maturity of the service.
Document instances of loss or gaps in event logs and address gaps as appropriate.
Configure all service assets within the Government Furnished Information - Software Tools list in accordance with applicable federal, DoD, IC, and NCE laws and policies.
Perform full integration and interoperability work across assets, ensuring data flows are properly parsed for ingestion and transmission to internal and external reporting systems (for example DoDIN, DoD Scorecard/Get to Green, IC CIO reporting).
Use agency-approved ticketing systems to document, track, assign, update, and coordinate engineering, integration, configuration, and maintenance actions.
Leverage monitoring, analysis, and visualization tools to track effectiveness, status, and performance metrics as required by government staff and contractors.

Requirements

SIEM experience with ArcSight, ElasticSearch, Splunk, Event Broker, or User Behavioral Analytics (UBA).
Experience supporting the Cybersecurity Operations Cell (CSOC) in creating alerting rules.
Ability to create SIEM playbooks.
Linux (RHEL) expert with administration and engineering proficiency.
Proficiency in tuning SIEM filters to detect malicious or atypical activity while reducing false positives.
Experience developing content within ArcSight and Kibana to aid analysts investigating incidents.
Creation of ArcSight rules based on malicious-event use cases.
Ability to tune and aggregate queries and filters.
Strong troubleshooting skills for event flow through the Enterprise Audit infrastructure.
Proficiency in troubleshooting event formats and parsing for ingestion into storage and SIEM tools.
Active TS/SCI clearance.
DoD 8570.01-M IAT Level II and CSSP Infrastructure Support certifications.
Minimum 6+ years of experience with SIEM and development projects.
At least 6+ years supporting SIEM for projects and technical exchange meetings.
Over 6+ years developing and maintaining enterprise audit projects.

Technologies

ArcSight
ElasticSearch
Splunk
Event Broker
User Behavioral Analytics (UBA)
Kibana
Linux (RHEL)
Joint Incident Management System (DoDIN)
DoD Scorecard / Get to Green reporting
Cybersecurity Performance Evaluation Model reporting

Work Requirements

6+ years of related experience
Experience may vary based on technical training, certifications, or degree

Location

St. Louis, MO (onsite)

Citizenship

U.S. Citizenship Required

Salary and Benefits

Salary range: $128,039 – $173,229 per year
Salary is determined by experience, geographic location, and contractual requirements; it may fall outside the stated range
View information about benefits and the total rewards program

Identity Verification

As part of the hiring process, an identity verification step that uses biometrics and AI may be required to confirm authenticity and prevent fraud. Virtual interviews may require on-camera participation, and biometric data may be collected for identity verification and security purposes.

About Our Work

We are GDIT, a global technology and professional services company delivering solutions and mission services to the U.S. government, defense, and intelligence communities. With about 26,000 experts, we operate across more than 50 countries, focusing on AI, cloud, cyber, and software development to drive immediate value for our clients.

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1mo ago

Cybersecurity Forward Deployed Engineer - FDE Senior Manager

Accenture St. Louis, MO

St. Louis, MO

1mo ago Closed

$123k - $366k/yr Full time Manager Senior Agent

This position is no longer accepting applications (closed Aug 1, 2026).

Job Description

Accenture is seeking a senior security leader to guide the risk and resilience of AI systems in production. This on site role in St. Louis focuses on making AI platforms secure, governed, and reliable, guiding security architecture and end to end delivery across complex client environments. The Forward Deployed Engineer Senior Manager leads hands-on security engineering and governance efforts that turn security concepts into live, secure AI deployments.

Responsibilities

Spearhead security architecture and threat modeling for production grade agentic deployments across multi stakeholder client environments, including LLM systems, multi agent pipelines, RAG architectures, and MLOps infrastructure, owning end to end security design from assessment to hardened deployment.
Provide hands on security engineering using agentic coding tools as the primary build environment; develop AI powered detection systems, automated threat response tooling, security assessment frameworks, and governance automation using Claude Code, Cursor, or GitHub Copilot in daily delivery practice.
Own AI specific threat surface management at program scale, implementing OWASP LLM Top 10 controls, prompt injection hardening, model extraction prevention, adversarial input defenses, and AI supply chain security across concurrent client workstreams.
Architect and govern AI security controls across the enterprise stack, including identity and access for AI systems, data pipeline security, model serving security, and cross system integration risk across cloud platforms (AWS, Azure, or GCP).
Lead AI governance framework implementation aligned to EU AI Act, NIST AI RMF, and model risk management applied to live production systems.
Shape AI reinvention security strategy for client CISO and CTO, building risk adjusted investment cases, security architecture roadmaps, and AI governance operating models aligned to business outcomes.
Define and publish reusable security patterns, playbooks, and accelerators that scale across multiple client engagements and grow the Secure AI practice.
Lead architecture design sessions, threat modeling workshops, and code with sessions alongside client engineering and security leadership teams.
Demonstrate cybersecurity domain expertise in at least one discipline such as AppSec, SecOps, IAM, cloud, GRC, or offensive security.
Participate in proposal and SOW development, solution shaping, and client commercial engagement.
Facilitate executive workshops and communicate with C suite and CISO level stakeholders.
Apply structured analytical thinking and hypothesis driven problem decomposition to security challenges.
Provide team leadership by developing and coaching managers and consultants through delivery.

Requirements

Minimum of 10 years of engineering experience in production environments with deep expertise in at least one cybersecurity discipline such as AppSec, SecOps / detection engineering, cloud security, IAM, offensive security / penetration testing, or GRC.
At least 2 years of hands on experience designing and deploying agentic AI solutions in production; theoretical familiarity does not qualify.
A minimum of 8 years of end to end security delivery ownership in a client embedded or production environment; internal advisory or compliance only roles do not qualify.
Eight years of work with cloud platform security fundamentals across AWS, Azure, or GCP, including IAM, network security, secrets management, and AI service security configurations.
Bachelor's degree or equivalent work experience; if holding an Associate's degree, a minimum of 6 years of work experience applies.

Technologies

Claude Code
Cursor
GitHub Copilot
AWS
Azure
GCP

Benefits

Medical, dental, vision, life, and long term disability coverage
401(k) plan
Bonus opportunities
Paid holidays
Paid time off

Professional Skills Requirements

Ability to translate security risk into business terms, framing threat exposure into risk adjusted investment rationale that executives would act on
Experience leading teams of engineers, including coaching, development planning, performance management, and career conversations

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1mo ago

Advanced Cybersecurity Analytics Engineer III

CACI St. Louis, MO

St. Louis, MO

1mo ago Closed

$75k - $158k/yr Full time Senior Bash Computer Skills

2mo ago

Special Agent: Cybersecurity/Technology Expertise

Federal Bureau of Investigation St. Louis, MO

St. Louis, MO

2mo ago Closed

$103k - $133k/yr Full time Agent Information Security InfoSec

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