Analyst II - SIEM/SecOps

About us: Build the future of banking. Zeta is a next-generation banking technology company providing cloud-native, fully stackable processing and core banking platforms for issuers. With a focus on scalability, compliance, and innovation, Zeta empowers financial institutions to modernize their technology infrastructure and deliver secure, seamless digital banking experiences. Our impact runs at real-world scale. Today, over 25 million cards are live on Zeta-powered platforms across 7 countries, supported by a passionate team of 1,700+ Zetanauts across India, the US, EMEA, and Asia. Backed by SoftBank Vision Fund, Mastercard, and other reputed strategic investors, we reached a valuation of $2 billion in 2025. Our focus is on establishing product lines that focus on key outcomes by addressing real customer pain points, modernizing legacy systems, and strengthening core fundamentals. As a result, our systems and platforms support a wide range of banking and payments capabilities, including: 1. Tachyon, our cloud-native banking stack built for population-scale systems 2. Cipher, our unified authentication platform for secure, high-volume banking environments 3. Digital Credit as a Service, enabling banks to launch credit lines on UPI 4. Elena, our intelligent and conversational AI platform for banking 5. Pixel, India’s first digital-native credit card, launched in partnership with HDFC Bank, for whom we also revamped their PayZapp mobile app: Winner of the Celent Model Bank Award for Payments Innovation 2024 6. Sparrow, the leading card experience for non-prime cardholders in the US …and more across cards, payments, lending, and core banking. We are an engineering-first organization that values ownership, bias for action, and long-term thinking. Together, we solve some of the hardest problems in banking tech. Our culture is built around trust, collaboration, and creating the conditions for you to drive impact proportionate to your potential. Reinforcing our commitment to creating an inclusive and supportive workplace, we have been consistently recognized as a Great Place to Work. If you want to build cutting-edge banking tech that enables banks to serve millions reliably, securely, and at a population scale, Zeta is your playground. If you would like to learn more about how we have grown and evolved over the years, watch our journey here. You can also explore our website and follow us on LinkedIn, Instagram, YouTube, and X. About the Role: Zeta is building out its Security Operations Centre function, running on AWS OpenSearch as our core SIEM. We are looking for a SOC L2 Analyst with a strong investigative mindset and hands-on comfort operating without a traditional GUI-driven workflow — this role requires fluency in query languages to search, correlate, and triage data directly. You'll be one of the early analysts shaping detection and response practices across a modern, cloud-native, hybrid environment spanning Kubernetes microservices, multi-cloud infrastructure, and traditional corporate IT. You will be investigating and monitoring across: Cloud & Infrastructure: AWS (primary hosting for all workloads/resources), Azure (logs), Kubernetes microservices Edge/CDN & Network Security: Cloudflare Endpoint: Microsoft Defender (corporate IT), macOS endpoints Primary OS for incidents: Linux (majority of incident volume), with Windows/macOS corporate IT coverage SIEM: AWS OpenSearch (query-language driven — no dedicated analysis GUI) Responsibilities: 1. Monitoring & Escalation Handling • Perform full-time monitoring alongside L1, actively working the alert queue during high-volume periods, while also handling escalations from L1 analysts. • Act as the primary escalation point for all L1-escalated alerts and incidents; receive and validate escalated alerts/incidents, performing deeper investigation to confirm scope, impact, and root cause. • Perform detailed investigation, log correlation, and root-cause analysis across multiple data sources — AWS, Kubernetes, Cloudflare, Azure logs, Defender, and Linux/macOS endpoints. • Write and run OpenSearch Query DSL / Lucene queries directly against raw log data to pivot, correlate, and build full incident timelines (this is the primary analysis method — there is no GUI-driven investigation path). • Determine incident severity, scope, and business impact; validate true positive vs. false positive at a deeper level. • Escalate confirmed major/high-severity incidents to the L3/Incident Response team or CSIRT leadership per the incident response plan, including a full technical summary, supporting evidence, and recommended actions. • Coordinate with L3/Incident Response teams for complex or high-severity incidents. 2. Threat Analysis & Detection Support • Conduct threat hunting based on IOCs, IOAs, and threat intelligence feeds. • Support ideation and testing of new detection use cases, correlation rules, and dashboards, in coordination with the detection engineering/L3 team. • Identify and report logging/health issues (e.g., missing logs, parser errors, data source outages) for timely resolution. • Tune and recommend improvements to detection rules, correlation logic, and SIEM use cases based on false positives/negatives observed during investigations; develop tested tuning solutions and hand them to L3 analysts and build teams for deployment. • Create new detection use cases, tune existing correlation rules, build/modify dashboards, develop and refine UEBA rules, and map detections to the MITRE ATT&CK framework for coverage visibility. 3. Playbook, SOP & Knowledge Management • Develop and refine investigation steps for scenarios not covered by existing playbooks, and document these as new/updated runbooks for L1 use. • Update and improve SOPs, playbooks, and knowledge base articles based on incident learnings. 4. L1 Oversight & Mentoring • Mentor and provide technical guidance to L1 analysts, including alert triage decisions and u