Top Entry Level Cyber Security Jobs in St. Louis, MO

Lead hands-on product security architecture across GitLab, including design reviews, threat modeling, systemic risk remediation, security standards, prototypes, and reusable developer guardrails. Partner with engineering and product leaders, secure distributed systems and software supply chains, guide AI coding tool security, mentor security engineers, and influence technical direction through proactive architecture and clear communication.

Triage bug bounty and vulnerability management reports, validate findings, assess severity, identify duplicates, and coordinate remediation through closure. Collaborate with PSIRT, engineering, legal, communications, customer success, and security teams. Support CVE assignments as a CNA representative, communicate with researchers and customers, maintain accurate records, monitor operational metrics, and improve vulnerability-handling procedures, runbooks, and documentation.

Lead security architecture and design reviews, define standards for protecting sensitive healthcare data, build automated defenses, guide security monitoring and incident response, translate complex objectives into engineering requirements, and mentor engineers through code and design reviews.

Lead Affirm’s enterprise AI security review program, threat model LLM and agentic systems, review code and configurations, and develop security guardrails, tooling, policies, and monitoring. Evaluate AI-enabled SaaS vendors, identify emerging vulnerabilities, support incident response, and lead cross-functional initiatives across Security, Engineering, Legal, Privacy, and Compliance. The role requires expertise in AI security architecture, threat modeling, IAM, cloud infrastructure, policy-as-code, and regulated enterprise environments.

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 and operate scalable security tooling, applications, APIs, and automation for CrowdStrike’s global multi-cloud Product Security environment. Responsibilities include software supply chain security, AI-powered vulnerability discovery, platform visibility, risk assessments, CI/CD, SRE operations, datastore management, monitoring, and incident response support. The role partners across Product Security to define tooling strategy and maintain mission-critical security services.

Translates compliance guidelines into business requirements, technical specifications, and security frameworks. Collaborates with internal teams, assessors, sales, project managers, support, engineering, and customers to understand web-scale systems, meet security obligations, integrate solutions, mitigate risks, and support go-live activities. Provides guidance on security controls, DDoS mitigation, network monitoring, incident escalation, threat detection, and security documentation.

Analyze, debug, and secure diverse codebases; implement features; refactor legacy software; conduct audits and penetration tests; optimize backend performance; and document findings to improve AI training datasets.

Own corporate IT and security for a growing remote company. Responsibilities include identity and access management, SaaS governance, endpoint security, automation, security policies, vulnerability management, incident response, audits, compliance, vendor management, and security assurance. The role will build scalable systems that reduce manual work, improve governance, secure devices and access, support certifications, and provide clear security posture visibility to leadership.

Leads data security governance across database monitoring, encryption, certificate and key management, HSM operations, data masking, and cryptographic asset inventory. Manages a security governance team, develops controls and procedures, supports audits and regulatory inquiries, partners cross-functionally, and drives post-quantum cryptography readiness, automation, metrics, service reliability, and operational maturity.

Create challenging coding tasks for AI systems, implement deterministic solution verifiers, and contribute backend expertise across feature development, bug fixing, refactoring, performance optimization, testing, and security reviews. The role requires strong programming and software engineering skills, with cybersecurity experience in secure coding, application security, penetration testing, vulnerability assessment, or security-focused code reviews preferred.

Build and secure scalable backend services and APIs while debugging, optimizing performance, implementing features, refactoring codebases, and conducting security reviews and penetration testing. The role also involves automated testing, code review, vulnerability assessment, and contributing domain expertise to training next-generation AI systems.

Conducts independent assessments of management, operational, and technical security controls for IT systems and networks. Plans authorization reviews, evaluates security documentation and risk, identifies architecture gaps, supports Risk Management Framework activities, verifies control implementation, manages remediation plans, and ensures cybersecurity requirements and compliance processes are properly documented and maintained. Requires a bachelor’s degree, TS/SCI clearance, and an approved DoD 8140 certification.

Designs and engineers secure network and cloud architectures across AWS, GCP, Azure, and physical data centers. Responsibilities include threat modeling, network segmentation, monitoring, alerting, automation, attack-surface reduction, and secure connection patterns. The role drives strategic security improvements, partners with product and infrastructure teams, communicates architectural decisions, and mentors engineers. Candidates need deep hybrid networking and cloud security expertise, protocol knowledge, scripting ability, independent problem-solving skills, and strong communication.

Own security partnerships for Customer Service and Creative Technology. Advise on GenAI and GenMedia security, customer data environments, cloud infrastructure, third-party tools, training data governance, and risk treatment. Build business risk profiles, drive remediation, report security posture, and support technical security due diligence for acquisitions and subsidiaries.

Designs, builds, operates, and integrates workforce identity and access management solutions for employees, contractors, and partners. Responsibilities include federated authentication, provisioning and deprovisioning, identity governance, compliance, access management, vendor integrations, acquisition-related migrations, solution rollout, and cloud-based service operation. The role requires hands-on IAM expertise, strong communication, programming familiarity, CI/CD experience, and AWS experience.

Owns the architecture and technical roadmap for the Ping Identity platform. Designs enterprise SSO, MFA, identity governance, application integrations, RBAC and ABAC frameworks, lifecycle management, and cloud or hybrid deployments. Leads migration and multi-region availability strategies while producing architecture designs, solution blueprints, integration standards, and audit-ready runbooks.

Own FAR.AI’s internal IT and security function, including accounts, devices, identity and access management, onboarding, offboarding, office networking, support, endpoint hardening, data protection, governance, and vendor risk. The role will remediate security gaps using threat modeling, automate self-service infrastructure, partner across teams, communicate and manage change, and hire and lead an IT Coordinator.

Lead cybersecurity risk strategy for frontier AI auditing. Design secure audit systems and privacy-enhancing technologies, evaluate AI-related cybersecurity risks, develop code and data tools, and strengthen internal IT infrastructure. Responsibilities include access controls, data protection, device management, incident response readiness, and communicating threat models, cryptography, and risk to technical and non-technical stakeholders.

Designs and secures enterprise AI platform foundations for mission-critical environments. Responsibilities include threat modeling, tenant isolation, identity and authorization architecture, secure CI/CD, compliance-by-design, and protection of systems executing untrusted code, tools, or agent actions. The role partners with client engineering, product, security, and business stakeholders to deliver secure, reliable, and compliant platform capabilities.

The Product Security Engineer partners with Engineering and Product teams to embed security throughout the development lifecycle. Responsibilities include threat modeling, architecture and security reviews, vulnerability validation, remediation planning, security-tool ownership, automation, secure coding guidance, incident response, and assessing risks in cloud and AI-enabled products. The role requires strong application security, identity, authentication, authorization, coding, communication, and cross-functional collaboration skills.

The fellowship provides military spouses and separating service members with cybersecurity training and hands-on experience through projects and vendor training, aimed at enhancing their security skills.

Designs and implements security controls across cloud platforms, operating systems, Kubernetes, networks, and CI/CD. Audits infrastructure for weaknesses, develops security and privacy improvements, performs threat modeling, and drives remediation. The role includes software development, infrastructure security, incident containment, and technical security analysis while collaborating with engineering teams in a distributed startup environment.

Company-wide recruiting bucket for Trace3's Security team. No specific role duties listed; applicants are encouraged to apply for a specific security opening. Describes company culture, perks (benefits, 401(k), PTO), and commitment to diversity and inclusion.