Scaling Fintech Systems & Tech Orgs: UPI Reliability, Monolith vs Microservices, and AI Blind Spots In this episode of Techie Talks with Kuldeep, host Kuldeep Singh speaks with industry veteran Kshitiz Agarwal about nearly two decades of experience across Samsung, Intel, OYO, Paytm, and ticketing/travel platforms. They discuss how architecture priorities shift in regulated, high-stakes systems like UPI, emphasizing fraud prevention, security, and reliability as critical to consumer trust. Kshitiz shares a framework for scaling engineering organizations by focusing on velocity (directional impact) over speed, using clear goals and iterative feedback loops. He explains why monolith-to-microservices migrations should be driven by specific problems and measurable outcomes, not trends, and outlines team-splitting approaches using product-aligned verticals and shared horizontal platforms with standard APIs. They also cover developing technical leaders through goals, autonomy, and minimal micromanagement, daily metric tracking for managers, career advice to learn the business and collaborate, and AI’s risk of encouraging careless attention to important details like sensitive logging.00:00 Precaps01:27 Introduction01:44 Career Journey Highlights03:13 Architecture For Trust05:19 Fintech Compliance Reality08:21 Scaling Teams With Velocity11:13 Monolith Vs Microservices14:34 Growing Technical Leaders16:37 AI Blind Spots For Leaders19:40 Rapid Fire Playbook22:25 Closing ThoughtsYouTube Channel: @techietalkswithkuldeep WhatsApp Channel: https://www.whatsapp.com/channel/0029Vb7Q4JHAjPXUt8hBgm2TLinkedIn: https://www.linkedin.com/company/techietalkswithkuldeepFacebook: https://www.facebook.com/profile.php?id=61574642927780Instagram: https://www.instagram.com/techietalkswithkuldeepFollow Kshitiz Agarwal on LinkedIn: https://www.linkedin.com/in/kshitiz-agarwal/#ai #technology #softwareengineering #systemdesign #techleadership #softwarearchitecture#cloudcomputing #techpodcast #techietalkswithkuldeepEngineering Leadership, System Design, Monolith to Microservices, Fintech Architecture, Techie Talks with Kuldeep, Scaling Engineering Teams, Software Architecture Best Practices