Senior Security Engineer (Hybrid)
Confirmed on the employer's own hiring board on Oct 18, 2026. First seen by Alion on Sep 17, 2026. Littelfuse scores B on the Alion truth index.
Littelfuse (NASDAQ: LFUS) is a diversified industrial technology manufacturing company shaping solutions for the safe and efficient transfer of electrical energy. Headquartered in Chicago, Illinois, USA, we serve customers across industrial, transportation, and electronics markets worldwide. With approximately 16,000 employees we design and manufacture innovative technologies that support electrification, energy efficiency, and advanced automation. Our global reach is matched by a culture that empowers innovation and long-term growth. Guided by our principles We Care, We Succeed With Our Customers, and We Own the Outcome, we work collaboratively, think boldly, and deliver solutions that move industries forward.
Littelfuse is seeking a Senior Security Engineer to design, implement, and continuously improve security controls that protect enterprise systems, cloud services, applications, data, and manufacturing operations. As a senior technical expert, you will partner with IT, Engineering, Compliance, Product Security, and business teams to embed security into technology solutions and strengthen our global security posture.
About the job:
Design, implement, and manage security controls across identity, endpoint, network, cloud, email, application, data, and manufacturing environments.
Embed security by design into projects, architecture reviews, system integrations, and technology changes.
Conduct security architecture reviews, risk assessments, vulnerability analysis, and third-party security assessments.
Develop and maintain secure configuration standards, technical documentation, and implementation guidance.
Drive remediation of vulnerabilities and configuration risks, validating effectiveness through testing and evidence.
Support Security Operations with detection improvements, incident response enhancements, and control optimization.
Partner with Compliance and Risk teams to translate business, customer, audit, and regulatory requirements into scalable technical controls.
Leverage automation, AI, metrics, and dashboards to improve security effectiveness and efficiency.
Contribute to customer security reviews, M&A activities, and other strategic initiatives.
AI and Automation
Utilize Generative AI and Agentic AI responsibly to improve security analysis, vulnerability triage, documentation, and repetitive engineering tasks.
Design and maintain secure automations and integrations using APIs, scripting, orchestration, and workflow tools.
Assess AI-related risks including prompt injection, data leakage, excessive access, insecure integrations, and privacy concerns.
Implement guardrails, validation mechanisms, logging, and human oversight for AI-enabled security processes.
About you:
Bachelor's degree in Cybersecurity, Information Technology, Computer Science, Engineering, or a related field, or equivalent experience.
5+ years of experience in cybersecurity engineering, cloud security, infrastructure security, systems engineering, or related disciplines.
Strong knowledge of security controls across identity, endpoints, networks, cloud platforms, applications, operating systems, and data protection.
Experience conducting security assessments, vulnerability management, remediation programs, and risk-based decision-making.
Hands-on experience with technologies such as EDR, PAM, SIEM, and related security platforms.
Practical understanding of AI security risks, secure AI adoption, and output validation.
Preferred Qualifications:
Experience in a global manufacturing or industrial environment, including OT/IT security considerations.
Experience with Microsoft security technologies such as Entra ID, Defender, Intune, or Purview.
Knowledge of cloud security, Zero Trust, vulnerability management, third-party risk, and secure software development practices.
Scripting and automation experience using PowerShell, Python, REST APIs, or workflow/orchestration platforms.
What Success Looks Like
Security controls are implemented, documented, monitored, and aligned to business risk.
New technologies and vendors receive effective security review and risk-based recommendations.
Vulnerabilities and configuration gaps are prioritized and remediated on time.
Automation and AI-driven solutions improve consistency, efficiency, and governance.
Business and technology teams rely on you as a trusted security advisor who delivers practical, scalable solutions.
At Littelfuse, we support employee growth and development. Guided by our culture principles, our teams work together to deliver value for customers and make a positive impact in the communities where we operate. We are an equal opportunity employer committed to fostering an inclusive workplace where everyone has the opportunity to grow and contribute. We offer competitive compensation and benefits, performance-based incentives, flexible work arrangements, and development opportunities.