Top Cyber Security Jobs in St. Louis, MO

Leads cybersecurity operations for classified information systems, enforcing security policies and Risk Management Framework requirements. Provides technical leadership, mentorship, compliance oversight, cloud migration guidance, security architecture support, threat analysis, reporting, and corrective-action recommendations. The role interfaces with government customers and cross-functional teams, develops security methodologies, evaluates and hardens software, and supports authorization and continued operation of systems processing classified information.

Leads product security engineering for defense training systems across requirements, architecture, assessment, testing, certification, and sustainment. Develops cybersecurity controls aligned with DoD RMF, JSIG, and NISPOM; conducts threat and risk assessments; identifies vulnerabilities; tracks mitigation; advises stakeholders; and supports cyber validation, audits, and certification. The role collaborates with engineering, customer, supplier, and industry partners while independently completing cybersecurity tasks.

Supports product security and anti-tamper development for Boeing defense platforms. Responsibilities include defining requirements and architectures, developing software designs and features, creating test plans, conducting verification, and protecting critical warfighter capabilities. The role collaborates with engineering teams, Department of Defense customers, suppliers, and subject matter experts across hardware and software domains. This is a 100% onsite, entry-level position in the greater St. Louis area.

Design and implement product security/anti-tamper software solutions for defense platforms. Define architectures, requirements, interfaces and algorithms, integrate and test security features across hardware and software, and collaborate with platform engineers and architects to field secure tactical capabilities.

Experienced Product Security Engineer supporting anti-tamper and product security for Boeing defense platforms. Responsibilities include developing requirements, documentation, test plans, and procedures; participating in verification; defining secure hardware and software architectures; and leading integration engineers across multiple programs. The role is fully onsite in Berkeley/St. Louis, Missouri, requires U.S. citizenship and the ability to obtain a Secret clearance, and involves collaboration with platform architects, chief engineers, customers, and suppliers.

Leads enterprise data security and information governance by building data intake, catalog, marketplace, classification, lineage, and access-control programs. Translates privacy and security requirements into technical controls, self-service workflows, and governance documentation. Partners with Legal, InfoSec, engineering, product, and data teams to support compliant data use, AI/ML initiatives, and regulatory requirements including HIPAA, GDPR, and CCPA. Measures adoption, turnaround times, and governance maturity across a global SaaS organization.

Leads technical pre-sales architecture for complex security solutions serving public-sector and commercial customers. Translates business, security, compliance, and technical requirements into solution designs, bills of materials, statements of work, estimates, pricing, assessments, and deployment plans. Conducts discovery sessions, architecture workshops, solution reviews, and customer presentations while partnering with sales, delivery teams, and security vendors. Mentors architects and sellers, supports regional customer activity, and travels throughout the Southeast as needed.

Leads product security and resiliency across the Tomahawk missile program lifecycle. Develops security requirements and architectures, protects systems and facilities, defines supplier security requirements, coordinates with government and industry stakeholders, researches innovative solutions, advises customers, investigates security issues, and supports compliance, certification, audits, and regulatory requirements.

Architect and build production AI security systems spanning endpoint sensors and cloud-scale infrastructure. Lead autonomous cyber defense capabilities, including detection, threat hunting, response, adversary simulation, secure agent execution, and model evaluation. Establish technical direction, benchmarks, and safety practices while mentoring senior engineers and researchers. Carry frontier AI research into the Falcon platform and represent the company through publications, open source, standards, and industry collaboration.

Secure CrowdStrike’s software supply chain and code-hosting environments by assessing GitHub organizations, open-source integrations, repositories, dependencies, and third-party packages. Implement repository guardrails, secret scanning, access controls, and automation; investigate supply-chain threats such as typosquatting and dependency confusion; promote secure coding and open-source compliance; and collaborate with engineering teams on security initiatives.

Build production security tooling and infrastructure using Terraform, Bash, Go, and Python. Partner with product engineers to design secure features, review Terraform and IAM configurations, automate security workflows, and advise teams on pragmatic vulnerability remediation. The role emphasizes developer enablement, scalable security libraries and tools, cloud security, containerization, and responsible AI use.

Secure Zapier’s production infrastructure by identifying and mitigating risks, hardening cloud environments, improving Terraform and CI/CD security, managing vulnerability and misconfiguration tools, enforcing least-privilege access, strengthening data governance, hardening Kubernetes images, and supporting incident response. The role collaborates with Platform, Engineering, and Security teams in a remote-first environment.

Leads Apollo’s detection and response strategy, detection architecture, security observability, incident response, and AI-assisted security workflows. Builds MITRE ATT&CK-aligned detections, response automations, investigation tools, and detection-as-code pipelines using Panther and Python. Leads high-severity incidents across cloud, SaaS, and corporate systems; improves IR readiness, metrics, playbooks, and forensic processes. Partners with Engineering, Infrastructure, IT, Legal, Fraud, and leadership while mentoring engineers and driving multi-quarter security initiatives.

Lead cloud security strategy and hands-on execution across AWS environments. Own CNAPP and CSPM capabilities, improve IAM and container security, build infrastructure-as-code guardrails, conduct architecture reviews and threat modeling, support detection and incident response, and drive remediation programs. Establish a multi-year cloud security roadmap, influence engineering priorities, mentor teammates, and partner with platform, infrastructure, SOC, and product engineering teams.

Leads enterprise network security architecture, engineering, and modernization across cloud and on-premises environments. Designs firewalls, WAF, DDoS protection, Azure connectivity, microsegmentation, Zero Trust, SASE, and SD-WAN solutions. Serves as a Level 3 incident escalation point, drives root-cause analysis and resilience improvements, establishes automation and DevSecOps standards, and mentors engineers. Partners with stakeholders and vendors to deliver secure, scalable network security platforms.

Leads the Network Security Engineering and Operations team, overseeing enterprise network security infrastructure, availability, lifecycle management, monitoring, incident response, compliance, risk mitigation, and 24/7 escalation support. Manages engineers, vendors, budgets, strategic projects, and cross-functional initiatives while communicating cybersecurity risks to technical and executive audiences. Drives automation, resilience, continuous improvement, and preventative security practices across sites, datacenters, and cloud environments.

Manage a global 24/7 Security Operations Center, including analyst leadership, shift coverage, operational processes, quality assurance, training, and career development. Improve workflows, playbooks, and service-level performance while collaborating with Product, Support, Tactical Response, Threat Hunting, and Detection Engineering teams. Lead initiatives, track security operations objectives, operationalize new services, and communicate technical concepts to internal stakeholders and external audiences.

Designs, implements, and governs secure AWS, Azure, and GCP cloud architectures across IaaS, PaaS, and SaaS environments. Defines security standards, IAM strategies, network controls, and guardrails; leads cloud security reviews, threat modeling, and risk assessments; integrates security into DevOps and CI/CD workflows; evaluates security tooling; supports compliance; and mentors engineering teams. The role also drives cloud security posture improvements, documentation, remediation, and long-term security architecture maturity.

Serves as the senior technical authority for enterprise browser data protection and security. Owns architecture, roadmap, standards, lifecycle, browser-based DLP controls, integrations, automation, and operational support. Leads complex troubleshooting, major incident response, root-cause analysis, runbook development, and continuous improvement. Partners across cybersecurity, identity, endpoint, network, cloud, risk, compliance, and vendor teams while mentoring engineers and influencing enterprise security design.

The Security Operations Engineer will build and manage cloud and enterprise security detections, lead incident response and threat hunting, automate security operations with SOAR playbooks, and maintain security telemetry pipelines. The role also involves vulnerability remediation, cloud architecture security reviews, cross-functional collaboration, on-call participation, and continuous improvement of runbooks and alert quality. Candidates need strong AWS security, SIEM, incident response, detection engineering, scripting, attacker tradecraft, and compliance framework experience.

Lead Apollo’s application security strategy across engineering, product, platform, data, and AI teams. Responsibilities include security architecture reviews, threat modeling, secure code review, penetration testing, exploit development, vulnerability management, secure-by-default building blocks, AI security standards, automation, and mentoring security engineers and champions. The role requires solving ambiguous, high-scale AppSec problems, influencing cross-functional roadmaps, and delivering measurable reductions in security risk.

The Senior Application Security Engineer will strengthen Apollo’s secure software development lifecycle through application security reviews, threat modeling, code analysis, vulnerability management, penetration testing, remediation, and AppSec tooling. The role includes developing automation, securing AI-powered features, improving security observability, enabling developers, and partnering across Engineering, Product, Platform, Data, Legal, and Security teams. This senior individual contributor will own long-term AppSec goals, resolve ambiguous risks, and drive cross-functional security improvements.

Serve as a hands-on technical security leader addressing complex product, infrastructure, architecture, and risk challenges. Evaluate security across compute, network, and storage; influence cross-functional decisions; lead M&A diligence and partner risk assessments; mentor senior individual contributors; and build a technical security community across product, enterprise, and security operations.

Own and define IAM strategy for corporate and production environments. Migrate Okta to Terraform, design least-privilege access, automate provisioning/deprovisioning and access reviews, build/manage MDM/MAM tooling, partner with platform and engineering teams, and serve as the IAM subject matter expert across Security, IT, and Engineering.

Own Cleo’s application and product security program across SaaS and customer-hosted products. Lead SSDLC practices, threat modeling, security tooling, vulnerability management, penetration testing, coordinated disclosure, CVE publication, and NIST CSF controls. Define product security standards, roadmap, secure defaults, access controls, and customer-facing advisories. Partner with engineering, product, architecture, and customers while guiding security engineers and consultants. Also establish protections for LLM applications, AI agents, and AI-assisted development workflows.