Senior Security Engineer

Job Title: Senior Security Engineer Requisition ID: R028205 Job Description: Your Platform Activision Blizzard supports our interactive gaming brands and studios with a diverse range of career opportunities across corporate functions. We bring together agility and creativity to improve the employee and player experience. To learn more, visit Activision Blizzard’s Security Engineering Team is looking for a talented and motivated Senior Security Engineer to join its ranks. You’ll join a technical team focused on safeguarding Activision, Blizzard, and King’s games, systems, and people. In this role, you’ll design, build, automate, and operate security capabilities across Azure, Google Cloud Platform (GCP), and on-premises environments. You’ll combine strong security fundamentals with Python engineering, infrastructure as code, and practical AI and large language model (LLM) experience to reduce risk and improve how security work gets done. The ideal candidate owns services from design through production, writes clear documentation, and helps other engineers succeed. You may find yourself… Designing and operating security controls across systems, including secure configurations, identity controls, network segmentation, and logging Building maintainable Python services, API integrations, and automation that reduce manual work, with testing, error handling, monitoring, and secure credential management Developing AI/LLM-assisted security workflows, evaluating their accuracy and usefulness, and implementing data protection, least-privilege access, and human approval for sensitive actions Using Terraform or equivalent infrastructure-as-code tools and CI/CD pipelines to deploy repeatable, reviewable security infrastructure and detect configuration drift Engineering and integrating traditional security tools such as firewalls, VPNs, web application firewalls, endpoint protection, vulnerability scanners, and SIEM platforms Performing threat modeling and security design reviews, identifying control gaps, and partnering with service owners to prioritize and implement remediation Writing and maintaining architecture documentation, design decisions, runbooks, standard operating procedures, and operational handoff materials Participating in engineering projects from requirements through production, making risk-informed tradeoffs, as well as reviewing code and designs Troubleshooting security services using logs, metrics, and network analysis; improving reliability and supporting through an on-call rotation Turning incidents and operational feedback into durable improvements through blameless postmortems, automated checks, and measurement of risk reduction and time saved You may succeed in this role if you… Have hands‑on experience securing and operating Azure and GCP environments, including cloud identity, networking, logging, and workload security Write quality Python and can demonstrate automation or integrations you have built, tested, deployed, and supported Have practical experience integrating AI/LLMs into tools or workflows beyond conversational use, and understand their limitations, evaluation needs, and security risks Use infrastructure as code, version control, code review, and CI/CD to make changes reproducible, testable, and safe to roll back Apply security fundamentals including least privilege, defense in depth, secure configuration, vulnerability management, encryption, and secrets management Communicate clearly in writing and conversation, translating technical findings into actionable guidance and documentation others can use without your help Can turn ambiguous problems into scoped engineering work, own delivery and operational outcomes, and collaborate across security, IT, cloud, and development teams Help peers grow through constructive feedback, automate repeated work, and choose practical, supportable solutions rather than adding unnecessary complexity Types of projects you may work on… Automating firewall rule reviews, security tool configuration, vulnerability enrichment, and remediation workflows using Python and APIs Developing AI/LLM-assisted alert enrichment, investigation summaries, or documentation retrieval with evaluation, auditability, and appropriate human oversight Creating reusable infrastructure-as-code modules and deployment pipelines with security validation, drift detection, and rollback procedures Improving security telemetry, service health monitoring, and the runbooks needed to operate these capabilities reliably Areas of Expertise for a Senior Security Engineer 8+ years of security engineering experience Cloud: Azure and GCP familiarity Programming and automation: Python, REST APIs, SDKs, automated testing, dependency management, and maintainable service integrations AI/LLMs: model APIs, retrieval-augmented generation, evaluation, output validation, and bounded tool permissions Network security: TCP/IP, DNS, TLS, routing, segmentation, firewalls, VPNs, web application firewalls, and intrusion detection/prevention Infrastructure as code and delivery: Terraform or equivalent, configuration management, Git, CI/CD, policy as code, and change control Security engineering fundamentals: threat modeling, secure design, vulnerability assessment, remediation prioritization, and system hardening Systems engineering: Linux, Mac, and Windows administration, troubleshooting, patching, availability, and operational recovery Technical communication: architecture diagrams, design records, runbooks, procedures, knowledge transfer, and guidance for technical and nontechnical audiences Our World Activision Blizzard brings together interactive entertainment brands and studios at the intersection of media, technology, and entertainment. We are home to beloved franchises including Call of Duty, World of Warcraft, Overwatch, Diablo, and Candy Crush. Our ability to build immersive and innovative worlds is enhanced by diverse teams working in an inclusive environment. We aspire to have a culture where everyone can thrive and help connect and engage the world through epic entertainment. The videogame industry and therefore our business is fast-paced and will continue to evolve. As such, the duties and responsibilities of this role may be changed as directed by the Company at any time to promote and support our business and relationships with industry partners. Activision is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, gender expression, national origin, protected veteran status, or any other basis protected by applicable law and will not be discriminated against because of disability. Rewards We provide a suite of benefits that promote physical, emotional and financial well-being for ‘Every World’ - we’ve got our employees covered! Medical, dental, vision, health savings account or health reimbursement account, healthcare spending accounts, dependent care spending accounts, life and AD&D insurance, disability insurance; 401(k) with Company match, tuition reimbursement, charitable donation matching; Paid holidays and vacation, paid sick time, floating holidays, compassion and bereavement leaves, parental leave; Mental health & wellbeing programs, fitness programs, free and discounted games, and a variety of other voluntary benefit programs like supplemental life & disability, legal service, ID protection, rental insurance, and others; If the Company requires that you move geographic locations for the job, then you may also be eligible for relocation assistance. Eligibility to participate in these benefits may vary for part time and temporary full-time employees and interns with the Company. In the U.S., the standard base pay range for this role is $102,800.00 - $190,204.00 Annual. These values reflect the expected base pay range of new hires across all U.S. locations. Ultimately, your specific range and offer will be based on several factors, including relevant experience, performance, and work location. Your Talent Professional can share this role’s range details for your local geography during the hiring process. In addition to a competitive base pay, employees in this role may be eligible for incentive compensation. Incentive compensation is not guaranteed. While we strive to provide competitive offers to successful candidates, new hire compensation is negotiable. Activision Blizzard, Inc. is the world’s largest interactive entertainment company, with operations across North America, Europe, and Asia. We are home to some of the most beloved entertainment franchises including Call of Duty, Skylanders, World of Warcraft, Overwatch, Diablo, Candy Crush, and Bubble Witch. Our combined entertainment network delights hundreds of millions of monthly active users in 196 countries, making us the largest gaming network on the planet! We’re proud to be recognized as one of FORTUNE’s "100 Best Companies To Work For" for five consecutive years and have earned a spot on FORTUNE’s “Most Admired Companies,” and “Future 50” lists. Our 10,000+ global employees are some of the best and brightest talents across entertainment, media, and technology. 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