{"id":2439000,"url":"https://alion.io/job/pubmatic-senior-security-engineer-end-user-infrastructure-ai-security","title":"Senior Security Engineer - End-User, Infrastructure & AI Security","company":{"id":5112,"name":"PubMatic","domain":"pubmatic.com","url":"https://alion.io/company/pubmatic","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":75,"open_postings":28,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-20T05:45:00Z"}},"role":"Security","role_family":"Security","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Pune, India","Gurgaon, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":21000,"max_usd":45000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":11},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Anomaly Detection","optional":false},{"name":"AWS","optional":false},{"name":"Bash","optional":false},{"name":"Crowdstrike","optional":false},{"name":"DLP","optional":false},{"name":"IAM","optional":false},{"name":"Linux","optional":false},{"name":"LLM","optional":false},{"name":"Python","optional":false},{"name":"SIEM","optional":false},{"name":"Zero Trust","optional":false},{"name":"AI Agents","optional":true},{"name":"Azure","optional":true},{"name":"Darktrace","optional":true},{"name":"GCP","optional":true},{"name":"ISO 27001","optional":true},{"name":"Kubernetes","optional":true},{"name":"NIST AI RMF","optional":true},{"name":"OWASP","optional":true},{"name":"RAG","optional":true},{"name":"Red Teaming","optional":true},{"name":"SOC 2","optional":true},{"name":"Threat Modeling","optional":true}],"status":"live","first_seen_at":"2025-11-20T12:28:52Z","employer_posted_date":"2026-09-21","last_verified_at":"2026-10-20T20:08:24Z","board_verified":true,"closed_at":null,"days_open":334,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":333},"description":"About the Role\nWe are looking for a hands-on Senior Security Engineer responsible for strengthening the security of our end-user environment and infrastructure across on-premises, data center, and cloud environments.\nThis role will focus primarily on endpoint security, infrastructure and network security, vulnerability management, incident response, Zero Trust, and security automation. The ideal candidate should also have practical experience applying AI technologies to improve security operations, threat detection, investigation, and automation.\nWhat You'll Do:\nOwn and continuously improve the security of end-user devices and enterprise infrastructure.\nDeploy, manage, and optimize endpoint security and EDR solutions such as CrowdStrike or equivalent.\nManage endpoint protection, device hardening, security configurations, and endpoint vulnerability remediation.\nManage and improve Data Loss Prevention (DLP), secure web/cloud proxy, and other end-user security controls.\nImplement and continuously improve Zero Trust security principles across users, endpoints, applications, and infrastructure.\nWork with Identity and Access Management (IAM) and Privileged Access Management (PAM) solutions to secure user and administrative access.\nManage and improve network security controls, including firewalls, IDS/IPS, WAF, network segmentation, and secure remote access.\nUnderstand network architecture, protocols, and traffic flows and identify opportunities to strengthen network security.\nSecure Linux-based infrastructure and work with infrastructure teams on system hardening, secure configurations, and access controls.\nIdentify security vulnerabilities, misconfigurations, and infrastructure security gaps and drive remediation with the appropriate engineering teams.\nOwn and support vulnerability management across endpoints, servers, network devices, and infrastructure.\nParticipate in vulnerability assessments, penetration testing, security scans, and remediation activities.\nMonitor and investigate security alerts using SIEM, EDR, network security, and other security platforms.\nParticipate in security incident response, including investigation, containment, remediation, recovery, and root-cause analysis.\nWork closely with Infrastructure, Network, IT, SRE, Cloud, and Engineering teams to ensure security is incorporated into architecture and design.\nPerform security reviews of infrastructure changes, new technologies, and architecture designs.\nSupport security across on-premises, data center, private-cloud, and public-cloud environments.\nEvaluate new security technologies and work with vendors on technical evaluations and proof-of-concept deployments.\nDevelop and maintain security standards, technical procedures, hardening guidelines, and operational documentation.\nMentor junior security engineers and help improve the team's overall technical capabilities.\nStay current with emerging cybersecurity threats, technologies, and attack techniques.\nAI & Security Automation Responsibilities\nApply AI technologies and AI-assisted security tools to improve day-to-day security operations.\nUse AI/ML capabilities for anomaly detection, threat detection, vulnerability prioritization, incident investigation, and security monitoring.\nLeverage AI to improve security alert analysis, correlation, prioritization, and remediation.\nIdentify opportunities to use AI to reduce repetitive manual security activities and improve operational efficiency.\nUse AI-assisted approaches to accelerate incident investigation, root-cause analysis, and remediation.\nUnderstand security risks introduced by AI and LLM-based applications and recommend appropriate security controls.\nUnderstand common AI/LLM security risks, including prompt injection, sensitive-data leakage, unauthorized access, excessive permissions, and misuse of AI systems.\nIntegrate AI capabilities with security platforms, APIs, SIEM/SOAR, monitoring systems, or internal security workflows where appropriate.\nDevelop security automation using Python, Bash, APIs, SOAR, or similar technologies.\nParticipate in security assessments of new AI/LLM technologies being introduced into the organization.\nEvaluate AI-enabled cybersecurity products and conduct POCs to determine their effectiveness and operational value.\nWe'd Love for You to Have\n Must have:\n8+ years of hands-on experience in cybersecurity, infrastructure security, network security, or related areas.\nStrong hands-on experience with endpoint security and EDR solutions such as CrowdStrike or equivalent.\nStrong understanding of endpoint hardening and end-user security.\nExperience with DLP and secure web/cloud proxy technologies.\nGood understanding and practical experience implementing Zero Trust security principles.\nExperience with Identity and Access Management (IAM) and Privileged Access Management (PAM).\nStrong understanding of network security, firewalls, IDS/IPS, WAF, network segmentation, and networking concepts.\nStrong understanding of network protocols, architecture, and traffic flows.\nExperience securing Linux-based systems and infrastructure.\nStrong experience with vulnerability management and remediation.\nExperience with security incident investigation and incident response.\nWorking knowledge of SIEM and security monitoring platforms.\nExperience securing on-premises and data center infrastructure.\nWorking knowledge of at least one major public-cloud platform, preferably AWS.\nAbility to review infrastructure and network architecture from a security perspective.\nPractical experience using AI or AI-assisted technologies within cybersecurity or security operations.\nUnderstanding of AI/LLM security risks and how AI technologies can affect enterprise security.\nExperience applying AI to areas such as anomaly detection, security monitoring, incident investigation, vulnerability management, or security automation.\nExperience with scripting and automation using Python, Bash, APIs, or similar technologies.\nStrong troubleshooting, analytical, and problem-solving skills.\nAbility to work effectively with Infrastructure, Network, IT, SRE, Cloud, and Engineering teams.\nExperience working with global teams.\nStrong communication skills and ability to explain security risks and remediation requirements to technical teams and management.\n Good to have:\nExperience with Darktrace or other Network Detection and Response (NDR) platforms.\nExperience with SOAR and security orchestration/automation.\nKubernetes and container security experience.\nExperience across AWS, Azure, or GCP security.\nExperience with VAPT and Red Team/Blue Team exercises.\nExperience with security architecture and threat modeling.\nExperience performing AI/LLM security assessments and threat modeling.\nExperience securing enterprise GenAI/LLM applications, AI agents, RAG systems, or internally developed AI solutions.\nFamiliarity with AI security frameworks and guidance such as MITRE ATLAS, NIST AI RMF, and OWASP guidance for LLM/GenAI applications.\nExperience supporting ISO 27001, SOC 2, or similar security and compliance programs.\nExperience evaluating new security products and working with vendors on security POCs.\nRelevant cybersecurity, network, cloud, or infrastructure certifications are a plus.\nQualifications:\nBachelor's degree in computer science, Information Technology, Engineering, Cybersecurity, or an equivalent technical field.\n6+ years of relevant cybersecurity or infrastructure security experience.\nStrong hands-on technical background with the ability to independently troubleshoot and resolve complex security issues.\nAbility to balance security requirements with infrastructure reliability, operational requirements, and business needs.\nAdditional Information:\nReturn to Office: PubMatic employees throughout the global have returned to our offices via a hybrid work schedule (3 days “in office” and 2 days “working remotely”) that is intended to maximize collaboration, innovation, and productivity among teams and across functions.\nBenefits: Our benefits package includes the best of what leading organizations provide, such as paternity/maternity leave, healthcare insurance, broadband reimbursement. As well, when we’re back in the office, we all benefit from a kitchen loaded with healthy snacks and drinks and catered lunches and much more!\nDiversity and Inclusion: PubMatic is proud to be an equal opportunity employer; we don’t just value diversity, we promote and celebrate it. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.\nAbout PubMatic\nPubMatic is one of the world’s leading scaled digital advertising platforms, offering more transparent advertising solutions to publishers, media buyers, commerce companies and data owners, allowing them to harness the power and potential of the open internet to drive better business outcomes.\nFounded in 2006 with the vision that data-driven decisioning would be the future of digital advertising, we enable content creators to run a more profitable advertising business, which in turn allows them to invest back into the multi-screen and multi-format content that consumers demand.","description_format":"text","description_chars":9215,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Hybrid work"],"hiring_locations":[{"name":"India","iso":"IN","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Advertising","Information Security"],"lifecycle":[{"event":"open","at":"2026-10-13T11:34:44Z"}],"visa":[],"liveness":{"score":4,"band":"cold","label":"Long shot","p_open":1,"p_active":0.154,"p_room":0.28,"age_days":333,"expected_fill_days":29,"reasons":["conf:2","stale_co","velocity","win:tail","crowd:"],"computed_at":"2026-10-20T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/pubmatic-senior-security-engineer-end-user-infrastructure-ai-security","json_url":"https://alion.io/job/pubmatic-senior-security-engineer-end-user-infrastructure-ai-security.json","meta":{"generated_at":"2026-10-20T22:02:06Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":25739,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-21T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":5112},"rest":"https://alion.io/mcp/rest/get_company?id=5112"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fpubmatic-senior-security-engineer-end-user-infrastructure-ai-security"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fpubmatic-senior-security-engineer-end-user-infrastructure-ai-security"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fpubmatic-senior-security-engineer-end-user-infrastructure-ai-security"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/pubmatic-senior-security-engineer-end-user-infrastructure-ai-security\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fpubmatic-senior-security-engineer-end-user-infrastructure-ai-security"}]}