Junior Cybersecurity Engineer Jobs in San Ramon, CA

Company Description
Sandisk understands how people and businesses consume data and we relentlessly innovate to deliver solutions that enable today's needs and tomorrow's next big ideas. With a rich history of groundbreaking innovations in Flash and advanced memory technologies, our solutions have become the beating heart of the digital world we're living in and that we have the power to shape.
Sandisk meets people and businesses at the intersection of their aspirations and the moment, enabling them to keep moving and pushing possibility forward. We do this through the balance of our powerhouse manufacturing capabilities and our industry-leading portfolio of products that are recognized globally for innovation, performance and quality.
Sandisk has two facilities recognized by the World Economic Forum as part of the Global Lighthouse Network for advanced 4IR innovations. These facilities were also recognized as Sustainability Lighthouses for breakthroughs in efficient operations. With our global reach, we ensure the global supply chain has access to the Flash memory it needs to keep our world moving forward.
Job Description
We are seeking a highly experienced Senior Cybersecurity Engineer to lead the design, assessment, and continuous improvement of our security posture, with a primary focus on protecting and hardening our external attack surface. This role requires deep technical expertise across multiple security domains, combined with the ability to architect scalable, automated solutions and proactively defend against emerging threats-including those leveraging artificial intelligence. You will operate as both a strategic architect and a hands-on engineer, partnering closely with cross-functional teams while independently driving key security initiatives.
ESSENTIAL DUTIES AND RESPONSIBILITIES:
Perimeter & Attack Surface Security

• Lead discovery, assessment, and continuous monitoring of external attack surface (domains, IP space, cloud assets, shadow IT)
• Design and implement controls to reduce exposure and improve resilience
• Conduct and oversee penetration testing activities, coordinating third parties and providing augmentation and oversight
• Build and mature vulnerability management programs, including prioritization and remediation workflows

Security Engineering

• Design and implement security solutions across network, cloud, and application layers aligning with industry best practice and compliance standards
• Evaluate and integrate tools for threat detection, prevention, and response
• Define and enforce security standards, patterns, and best practices
• Extend attack surface discovery to include OT assets and unmanaged devices
• Improve unified visibility across IT, cloud, and manufacturing environments
• Address shadow OT / undocumented assets

Automation & Scalability

• Identify opportunities to automate security processes (e.g., vuln triage, asset discovery, alerting, reporting)
• Develop scripts, pipelines, or tooling to improve efficiency and reduce manual effort
• Partner with engineering teams to embed security into CI/CD and operational workflows
• Assess and secure third-party access (vendors, OEMs, remote maintenance channels)
• Evaluate risks in hardware, firmware, and software supply chains
• Support SBOM (Software Bill of Materials) and component traceability initiatives

AI & Emerging Threats

• Assess risks related to AI-driven threats (e.g., automated attacks, deepfakes, adversarial AI)
• Support design and implement defensive strategies leveraging AI/ML where appropriate
• Provide guidance on secure adoption and creation of guardrails for AI technologies internally

Collaboration & Leadership

• Work closely with infrastructure, DevOps, product, and leadership teams to align on security priorities
• Translate technical risks into business impact for stakeholders
• Lead or influence security initiatives from concept through execution
• Mentor junior engineers and promote a strong security culture

Qualifications
EDUCATION & EXPERIENCE

• Bachelor's degree in Cybersecurity, Computer Science, Information Systems, or equivalent practical experience
• 5-10+ years of experience in cybersecurity engineering, architecture, or related roles
• Relevant certifications (e.g., CISSP, OSCP, CEH, GIAC) - valued but not required

REQUIRED QUALIFICATIONS

• Attack surface management and external asset discovery
• Penetration testing methodologies and tools
• Vulnerability management programs and tooling
• Experience securing cloud environments (AWS, Azure, or GCP)
• Solid scripting or programming skills (e.g., Python, Bash, Go)
• Experience building or implementing automation in security workflows
• Strong understanding of networking, systems, and application security principles
• Proven ability to work cross-functionally and drive initiatives independently
• Familiarity with frameworks such as:
  • NIST CSF / NIST 800-82 (ICS security)
  • ISO 27001

TECHNICAL SKILLS

• Experience with AI/ML in security (defensive or adversarial contexts)
• Familiarity with modern security tooling (EDR/XDR, SIEM, SOAR)
• Familiarity with commercial or open ASM tooling
• Familiarity with commercial OT security tools (e.g. Claroty / Nozomi / Dragos)
• Experience with DevSecOps and CI/CD security integration

SUCCESS

• Clear visibility and control over the organization's external attack surface
• Reduced vulnerability exposure and faster remediation cycles
• Increased automation leading to measurable efficiency gains
• Practical, forward-looking defenses against emerging AI-driven threats
• Strong alignment between security and business objectives
• Reduction in exposed assets
• Time-to-remediation improvements
• Automation coverage
• Improved Asset visibility growth and accuracy (IT / cloud / OT)

Additional Information
Sandisk is committed to providing equal opportunities to all applicants and employees and will not discriminate against any applicant or employee based on their race, color, ancestry, religion (including religious dress and grooming standards), sex (including pregnancy, childbirth or related medical conditions, breastfeeding or related medical conditions), gender (including a person's gender identity, gender expression, and gender-related appearance and behavior, whether or not stereotypically associated with the person's assigned sex at birth), age, national origin, sexual orientation, medical condition, marital status (including domestic partnership status), physical disability, mental disability, medical condition, genetic information, protected medical and family care leave, Civil Air Patrol status, military and veteran status, or other legally protected characteristics. We also prohibit harassment of any individual on any of the characteristics listed above. Our non-discrimination policy applies to all aspects of employment. We comply with the laws and regulations set forth in the "Know Your Rights: Workplace Discrimination is Illegal" poster. Our pay transparency policy is available here.
Sandisk thrives on the power and potential of diversity. As a global company, we believe the most effective way to embrace the diversity of our customers and communities is to mirror it from within. We believe the fusion of various perspectives results in the best outcomes for our employees, our company, our customers, and the world around us. We are committed to an inclusive environment where every individual can thrive through a sense of belonging, respect and contribution.
Sandisk is committed to offering opportunities to applicants with disabilities and ensuring all candidates can successfully navigate our careers website and our hiring process. Please contact us at jobs.accommodations@sandisk.com to advise us of your accommodation request. In your email, please include a description of the specific accommodation you are requesting as well as the job title and requisition number of the position for which you are applying.
Based on our experience, we anticipate that the application deadline will be 11/03/2026 (3 months from posting), although we reserve the right to close the application process sooner if we hire an applicant for this position before the application deadline. If we are not able to hire someone from this role before the application deadline, we will update this posting with a new anticipated application deadline.
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Compensation & Benefits Details

• An employee's pay position within the salary range may be based on several factors including but not limited to (1) relevant education; qualifications; certifications; and experience; (2) skills, ability, knowledge of the job; (3) performance, contribution and results; (4) geographic location; (5) shift; (6) internal and external equity; and (7) business and organizational needs.
• The salary range is what we believe to be the range of possible compensation for this role at the time of this posting. We may ultimately pay more or less than the posted range and this range is only applicable for jobs to be performed in California, Colorado, New York or remote jobs that can be performed in California, Colorado and New York. This range may be modified in the future.
• You will be eligible to participate in Sandisk's Short-Term Incentive (STI) Plan, which provides incentive awards based on Company and individual performance. Depending on your role and your performance, you may be eligible to participate in our annual Long-Term Incentive (LTI) program, which consists of restricted stock units (RSUs) or cash equivalents, pursuant to the terms of the LTI plan. Please note that not all roles are eligible to participate in the LTI program, and not all roles are eligible for equity under the LTI plan. RSU awards are also available to eligible new hires, subject to Sandisk's Standard Terms and Conditions for Restricted Stock Unit Awards.
• We offer a comprehensive package of benefits including paid vacation time; paid sick leave; medical/dental/vision insurance; life, accident and disability insurance; tax-advantaged flexible spending and health savings accounts; employee assistance program; other voluntary benefit programs such as supplemental life and AD&D, legal plan, pet insurance, critical illness, accident and hospital indemnity; tuition reimbursement; transit; the Applause Program, employee stock purchase plan, and the Sandisk's Savings 401(k) Plan.
• Note: No amount of pay is considered to be wages or compensation until such amount is earned, vested, and determinable. The amount and availability of any bonus, commission, benefits, or any other form of compensation and benefits that are allocable to a particular employee remains in the Company's sole discretion unless and until paid and may be modified at the Company's sole discretion, consistent with the law.