Mayank Chaudhary

Product Solution Engineer with 4+ years of experience in FinTech, payment gateway integrations, API troubleshooting, and merchant onboarding. Skilled in REST APIs, SQL, Kibana, Sumo Logic, and payment systems including UPI and card transactions. Experienced in resolving production incidents, supporting enterprise merchants, and collaborating with Product and Engineering teams to improve integration reliability and customer experience.

Certified in Salesforce AI, Azure, and Power BI with exposure to GenAI-based automation systems.

Product Solution Engineer / Integration Engineer at Open Financial Technologies (2023-12 – Present)

• Supported end-to-end Merchant Onboarding and Payment Gateway Integrations using REST APIs and Postman.
• Troubleshoot API Failures, Webhook Issues, Transaction Failures, and Banking Integration problems across UPI, Cards, and Net Banking flows.
• Performed Root Cause Analysis (RCA) for Production Incidents and collaborated with Product, Engineering, and Banking Partners for faster resolution.
• Monitored Production Systems and Transaction Logs using Kibana, Sumo Logic, and EFK Stack to ensure SLA Compliance.
• Leveraged SQL for Transaction Analysis, Reconciliation, and debugging Critical Production Issues.
• Managed SFTP Integrations, Settlement Issues, and Partner Support Escalations.
• Conducted Technical Walkthroughs for Merchants and internal stakeholders during Onboarding and Post-Production Support.

Associate Consultant at ATOS (2021-06 – 2023-07)

• Led incident management and resolved production batch failures.
• Optimized SQL queries to improve response times.
• Developed alerts and dashboards using New Relic and Kibana.
• Collaborated with cross-functional teams on enhancements and fixes.

B.E. in Computer Science – Dayananda Sagar Academy of Technology & Management (2020)