Renjith shares what goes into building a great Shopify checkout – from UX decisions to payment method integrations – and what he enjoys most about turning ideas into real tools for merchants.
At Mondido, we’re all about making payments easier – for merchants and their customers. A big part of that is the checkout experience: how it looks, how it works, and how each payment method fits in. That’s where Renjith Ramachandran comes in. As our Technical Product Manager, he works closely with our developers and partners to shape the Mondido platform – with a special focus on Shopify, conversion, and real merchant needs.
We asked Renjith a few questions about what his days look like, what makes a checkout truly great, and what he’s most proud of in our Shopify app.
You work closely with both developers and payment providers. What does a typical day look like as a Technical Product Manager at Mondido?
Mornings usually start with checking alerts and reviewing anything new from the team – stats, questions, support issues. Then I’m on calls with developers or suppliers, making sure integrations are moving forward. The afternoons are more about planning and feature work: what’s next, what needs fixing, and what can be improved. There’s always a balance between solving what’s urgent and making sure we’re building the right things long-term.
Checkout UX is often underestimated. What are the most common mistakes you see in e-commerce checkout design, and how do you help merchants avoid them?
One mistake is not thinking about who’s actually using the checkout. If you’re showing payment methods that aren’t relevant or making people re-enter info you already have, that’s friction. We try to minimise those moments. Most of what we do behind the scenes is making sure the flow just feels natural – no extra clicks, no surprises.
Mondido’s Shopify app is getting a lot of traction. What makes it stand out among all payment apps, and what role have you played in shaping its features?
“It’s easy to set up and actually works out of the box, which isn’t always the case in this space. Merchants don’t have time to deal with technical issues – we try to keep things fast and predictable. I’ve been involved in making the setup flow smooth and making sure all the moving parts, like refunds or local payment methods, behave the way merchants expect. The best integrations are the ones you never notice – because they just work.”
You’re often the link between Mondido and our payment partners. What makes a good supplier collaboration work smoothly?
“A good supplier collaboration works when there’s trust, clear communication, and a shared sense of urgency. We often deal with edge cases and tight timelines, so it helps when the partner is responsive and solution-oriented. The best collaborations are the ones where we don’t have to explain things twice – they just get how we work, and we move forward together.”
Every merchant setup is a little different. How do you make sure each payment method fits naturally into the checkout flow?
“We standardise the technical side but keep the logic flexible. I work with suppliers to ensure everything performs well and feels native to Shopify – across different regions and store setups.”
What’s the biggest challenge when integrating a new payment method into Shopify?
“Every provider has their own rules, APIs, and limitations. The challenge is fitting those into Shopify’s strict checkout structure without breaking anything. It’s like solving a puzzle where all the pieces are slightly different shapes each time.”
How do you prioritise what to build next when so many teams rely on the platform?
“We get input from a lot of directions, but the goal is always the same: fix what matters most. I look at data from the platform, feedback from Felicia and support, and technical dependencies from our suppliers. Then it’s about lining that up with where we’re heading as a company. We don’t build for the sake of it – every feature should actually solve something.”