Modern Software Testing: How YELL Payments Builds and Releases Innovative Fintech Experiences

Fintech companies spend millions to win users, but payment failures and poor product experiences can quickly erode trust and stall growth. For YELL, a modern payments startup that bypasses traditional rails for faster, more efficient transactions, even a small glitch can become a big blocker to a successful launch.

So, how do they stay ahead of the curve and deliver a great customer experience every time? By testing real-world usage across different devices, network conditions, payment integrations, and user behaviors to make sure the product performs where it counts.

Join YELL’s CEO, Florian Berlinger, and Testlio’s CEO, Steve Semelsberger, for this exclusive fireside chat to explore how great payment products are designed, built, tested, and released—all with high velocity and flexibility.

Key takeaways include:

What goes into building a resilient payment system from the ground up
How the YELL team works through the real-world challenges of modern payment infrastructure
How they validate critical user experiences before launch
How YELL makes the most of internal and external resources while keeping software quality front and center
And practical takeaways you can apply to your own development and testing strategies

Meet our guest:

Florian Berlinger

CEO, YELL Payments

Florian is working on removing financial worries for individuals and small businesses. He’s passionately crafting a seamless payment ecosystem, ensuring people have easy access to their full buying power and businesses can accept payments in real time at low costs. Before YELL, he led AI and machine learning initiatives at Fidelity Investments and co-founded a real estate fintech startup. With a PhD from Harvard and a background spanning swarm robotics, LLM safety, and personalized finance, Florian brings a rare blend of deep technical expertise and product vision to modern fintech. He is dedicated to making financial peace a reality for all and welcomes you to join YELL!

Meet your host:

Steve Semelsberger

CEO, Testlio

Steve Semelsberger is the CEO of Testlio, the originator of fused software testing. His 25-year career spans leadership, board, consulting, and investing work with high-growth technology and services companies. He’s the Founder of Alder Growth Partners, was a President at SYPartners, helped grow two startups to acquisitions (Pluck and iChat), and served as an executive on two IPOs (DMD & MOTV). He holds an MBA from Duke University along with a BS from Binghamton University.