Top Senior Cyber Security Jobs in St. Louis, MO

Leads Boeing’s Product Security Engineering software security team, managing personnel, staffing, career development, and technical execution. Establishes software security strategies, engagement plans, secure development practices, and program priorities across defense and enterprise software efforts. Partners with engineering, executive, program, and customer stakeholders; manages risks, issues, and opportunities; oversees technical delivery; supports software assurance, certification, and security activities; and grows the organization’s capabilities and talent pipeline.

Develops and sustains cybersecurity requirements, secure architectures, risk assessments, security controls, and cyber-resiliency solutions for embedded avionics systems across their lifecycle. Coordinates with systems, software, hardware, and product-security teams; performs threat and adversity analysis; supports certification and customer artifacts; leads security processes, risk-reduction activities, planning, and cross-functional collaboration. The role is fully onsite in Missouri, requires up to 10% travel, and requires obtaining and maintaining an active U.S. Secret clearance.

Design, integrate, and verify anti-tamper/product security solutions for embedded computing assets across defense platforms. Develop requirements, test plans, documentation, and collaborate with platform engineers and customers to field hardware/software protections, including cryptography, secure communications, reverse engineering, and FPGA-based mitigations. Must support development through verification and fielding.

Conduct advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Identify and exploit novel, systemic, and chained vulnerabilities; develop proof-of-concept exploits, testing methodologies, and research automation; assess AI attack vectors and open-source dependencies; drive remediation and security improvements; advise engineering teams, contribute to roadmaps, mentor researchers, and share findings with the security community.

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.

Partner with sales to design and deliver technical product presentations, gather customer requirements, lead hands-on evaluations and custom configurations, and design evaluation test plans to guide enterprise prospects to successful data security outcomes.

Administer and improve Workday and multi-platform HR security, including role-based access, security groups, access reviews, request approvals, audit support, governance documentation, and compliance controls. Evaluate elevated access requests, identify risks, resolve routine issues, coordinate remediation, and escalate complex decisions. Partner with HR, IT, Legal, and Compliance stakeholders to strengthen policies, processes, and least-privilege access across Workday, Peakon, UKG, Prism, and HR data platforms.

Lead public sector security compliance initiatives, including FedRAMP continuous monitoring, audits, certifications, GRC strategy, compliance automation, documentation, customer support, and regulatory analysis. Collaborate with IT, Product, Engineering, Security, Legal, auditors, and government customers to strengthen compliance across GitLab’s SaaS and self-managed offerings.

Designs, documents, tests, and maintains IT general and security controls across corporate, engineering, SaaS, and cloud-native systems. The role maps controls across SOX, SOC 2, ISO, NIST, PCI-DSS, privacy, and contractual requirements; manages audits, access reviews, change-management testing, remediation, policy work, and evidence automation. It also establishes governance standards for enterprise AI use and partners with IT, Security, Engineering, Finance, Legal, Privacy, and auditors.

Monitor emerging vulnerabilities, assess exploitability and business risk, prioritize remediation, and develop vulnerability intelligence frameworks. Implement asset detection and monitoring across cloud and data-center environments, maintain vulnerability management KPIs, communicate security posture to technical and executive stakeholders, use CrowdStrike Falcon capabilities, and build security tooling. The role requires scripting, threat intelligence research, cloud and Linux experience, cross-functional collaboration, and AI-enabled workflow improvements.

Own and evolve GitLab’s authorization systems across its Ruby on Rails monolith and next-generation Rust policy engine. Design fine-grained permissions for users, tokens, roles, and AI agents; secure GraphQL and REST APIs; lead feature-flagged rollouts and migrations; improve performance and reliability; and collaborate across authentication, platform, AI, and modular-service teams in a distributed asynchronous environment.

Conduct manual penetration tests and secure code reviews across web applications, APIs, AWS infrastructure, and AI systems. Develop AI-assisted security tooling, test LLM applications and agents, triage SAST findings, tune detection rules, support security reviews before production, and communicate risks and remediation priorities to engineering teams.

Build and scale application security for a SaaS platform by integrating SAST, SCA, DAST, secrets scanning, and container/IaC checks into CI/CD. Partner with engineering and DevOps teams on threat modeling, secure code reviews, vulnerability remediation, incident response, and secure development practices. The role also supports compliance goals and translates security risks clearly to engineers.

Leads cybersecurity consulting across the customer lifecycle, supporting presales demonstrations, proof-of-concepts, executive reviews, cyber skills programs, crisis simulations, and platform adoption. Advises strategic customers on cyber resilience, risk measurement, security initiatives, and program roadmaps. Partners with sales, product, content, and engineering teams while serving as a trusted embedded advisor and escalation point.

Conduct advanced OSINT and operational tradecraft to collect, track, and report on hacktivist and state-sponsored threat actor activity across South Asia, Latin America, and North Africa. Produce contextual internal reports, collaborate on analytical products, and employ secure methods to support threat intelligence operations.

Own and improve Onebrief’s corporate security stack across endpoints, identity, SaaS, browsers, Zero Trust, EDR, SIEM, and MDM. Establish secure configuration baselines, detect and remediate drift, integrate telemetry, and build API-driven or infrastructure-as-code automation. Translate CMMC 2.0 and NIST-aligned requirements into continuously validated technical controls and reliable audit evidence. Partner with Corporate IT, Security Operations, GRC, and application owners to strengthen security posture and reduce manual compliance work.

Lead product cybersecurity engineering for Boeing avionics across the full lifecycle: derive security requirements, design secure architectures, perform risk/threat analysis and testing, produce PSE artifacts, coordinate with systems/software/hardware teams, and drive risk reduction and technology maturation to meet program and certification needs.

Analyze in-the-wild exploits and perform deep reverse engineering to track adversaries. Build detection, automation, and classification frameworks; develop host/network signatures and tooling. Produce high-quality intelligence reports and briefings, collaborate across teams, and contribute to mitigation and large-scale hunting efforts.

Lead OSINT and engagement-driven investigations into Russian-language eCrime actors across surface, deep, and dark web. Collect actionable intelligence, produce contextual internal reports, collaborate with analytic teams, employ secure virtual OPSEC tradecraft, and leverage AI to accelerate research and decision-making under tight deadlines.

Lead security engineering across AI systems, cloud infrastructure, product security, GRC automation, GitHub controls, and compliance workflows. Develop AI-specific threat models and guardrails, automate security checks and evidence collection, strengthen AWS and GCP environments, manage CSPM tooling, and secure software supply chains. Partner with Engineering, Product, Legal, IT, and GRC to establish security programs and practical controls for Jasper’s AI platforms.

Manages global 24/7 Security Operations Center operations, including processes, playbooks, shift coverage, quality assurance, analyst development, incident response capabilities, and operational performance. Leads cybersecurity analysts, partners with Product and Support teams, reports on objectives and key results, operationalizes new services, and represents the organization in public speaking engagements.

Lead corporate endpoint security architecture with a focus on macOS, designing secure-by-default controls, automation, patching, software distribution, and security baselines across macOS, iOS, Windows, and Linux. Manage configurations through Terraform, GitOps, version control, CI pipelines, and automated rollouts. Partner with IT and security teams to improve telemetry, detection, response, auditability, and operational efficiency. Mentor engineers and serve as a senior escalation point for complex endpoint security issues in a fully remote environment.

Serve as a senior embedded cybersecurity consultant across the customer lifecycle: secure technical wins in pre-sales, run POVs, advise C-level and technical stakeholders, design cyber skills programs and crisis simulations, drive platform adoption and roadmaps, operationalize Immersive One with metrics and EBRs, and act as the customer liaison to sales, product, and engineering to improve cyber workforce resilience.

As a Security Architect, you will build secure agent runtimes and systems, ensuring robust security capabilities in agentic AI solutions while conducting security evaluations.

Design, implement, and maintain cloud security solutions; own CNAPP enablement and vendor relationships (Azure, AWS, Palo Alto); serve as RCSA control owner (TEC083) and automate attestations; build Cloud Security dashboards in Microsoft Power BI; collaborate with architecture and operational partners to onboard, operationalize, and support cloud security capabilities.