Technical Support Engineer II

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. Zeta is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We encourage applicants from all backgrounds, cultures, and communities to apply and believe that a diverse workforce is key to our success. About the Role: As a Technical Support Engineer for Banking Technology, you are expected to have an overall relevant experience of at least 3+ years (with at least 1 year of relevant work experience in enterprise products in a B2B banking technology company).  Zeta Tachyon is an Enterprise Saas Platform comprising 100+ externally consumable APIs, 10+ Customer-facing interfaces and multiple Data Extracts with more and more functionality getting added every month in a fast-paced environment. As a Technical Support Engineer for Banking Technology, you will be responsible for providing technical support and expertise to address issues and ensure the smooth operation of banking systems and technologies.  You will play a crucial role in providing front-line technical support to customers and internal stakeholders at the client site. You will investigate issues hands-on, analyzing logs, tracing events, troubleshooting APIs and querying data before escalating, and will work closely with Zeta’s 24×7 offshore support team. Responsibilities:

Customer Support & Issue Resolution

• Act as the primary technical contact for customer issues, delivering prompt, courteous, and professional support via email, phone, and ticketing systems.

• Monitor, triage, and prioritize incoming support requests based on urgency and business impact, ensuring timely resolution and high customer satisfaction.

Product Configuration & Maintenance

• Configure, maintain, and troubleshoot Zeta’s product suite to support seamless client onboarding and sustained operational performance.

Technical Operations & Protocol Handling

• Manage end-to-end payment transaction workflows.

• Write and execute SQL queries confidently and independently, and troubleshoot APIs. Familiarity with card processing protocols such as ISO 8583, Visa, and Mastercard is a plus.

• Troubleshoot banking systems, applications, and infrastructure issues using tools such as Postman, OpenSearch, Kibana, Splunk, Grafana, and grep.

Log Analysis & Root Cause Investigation

• Analyze system logs to identify root causes and implement effective resolutions for recurring or critical issues.

• Trace the history of a request or transaction across systems using correlation or transaction IDs and timestamps.

• Distinguish error messages from exceptions, read stack traces, and identify where and why a failure occurred.

• Read and navigate Grafana dashboards, understand what each dashboard monitors, and spot abnormal behavior early.

Cross-Functional Collaboration

• Work closely with engineering, product, and QA teams to investigate and resolve complex technical challenges.

• Ensure timely escalation, clear communication, and effective knowledge sharing across teams.

• When a scenario isn’t covered in the runbooks, gather the missing information from partner teams (engineering, product, database, platform and offshore support) and coordinate a resolution for the customer.

• Reach out early and with context when in doubt, especially before acting on production systems or customer data.

Documentation & Knowledge Sharing

• Develop and maintain technical documentation, including knowledge base articles, troubleshooting guides, and implementation manuals.

• Document common issues, resolutions, and best practices to enable self-service and improve team efficiency.

Process Optimization & Continuous Improvement

• Proactively evaluate and enhance operational workflows and support pr