An embeddable checkout SDK. Partner apps drop it in so their users can fund an account from a wallet, an exchange account or a card, each in the partner’s own brand.
Frontend Lead of a frontend-heavy team of about six, working alongside the client’s engineers, until a planned hand-over to the next lead.
A checkout that has to feel native inside many different brands, and a large team delivering into fragile legacy code without regressions.
Animations across the checkout, without a shared system.
Inserted: One motion system: shared timing and easing tokens, animated amounts and fees, status icons, a dialog that resizes smoothly, and step transitions, all in Storybook.
Used across the entire checkout, and the client was very happy with it.
Struck out: Writing a new theme just to check whether something fits.
Inserted: A reworked showcase where the team previews and tweaks themes in real time.
Used daily by the whole team, across 7+ partner themes.
Flagged: Embed a third-party verification flow in an iframe.
Inserted: Before we commit: no callbacks, inconsistent UI, awkward modal sizing and transitions, and security and UX risks.
The client kept the iframe, with the costs on the table. I made it as seamless as possible: the dialog animates its width to fit the embedded step.
A team member who had struggled with communication in past reviews.
Inserted: A structured improvement plan, framed as an opportunity rather than a last warning.
They improved significantly and went on to receive great feedback from the client.
The key objective was integrating a new payment provider into fragile legacy code without regressions, so I put daily alignment in place. I paired a mid-level engineer with a new junior, and gave the mid-level engineer a small initiative of their own to grow their leadership.
The client extended the engagement several times. The motion system and theming shipped across partner brands, and a teammate I coached went on to earn great client feedback.
“He would always proactively ask whether I was blocked or having problems, and made sure to remind me to raise red flags early. His openness to talk about these issues provided a much-needed sense of security.”