Senior Product Software Engineer – Merchant Area

About seQura seQura provides innovative, flexible and easy-to-use payment technologies that help merchants acquire, convert and retain more customers. We make a difference in sales performance by tailoring our solutions to different sectors, to address their unique pain points and deliver superior results in Retail, Education, Eyewear, Repairs and Travel. We also empower smart shopping to consumers who seek more value, convenience, and flexibility in their shopping, with new payment experiences that allow them to save, access interest-free credit, or pay in small, comfortable installments of up to 24 months. Born in Barcelona, seQura is a privately-owned fintech, currently expanding throughout southern Europe and Latin America, growing above 50% CAGR. Over 6000 businesses, almost 3 million shoppers, and almost 400 employees continue to rate us as one of the most loved and trusted fintechs out there, with an NPS of 87%, a Trustpilot rating of 4.7/5, and a Glassdoor rating of 4.1/5. About the role 🤓 We’re looking for a Senior Product Builder who wants to own product problems, not just engineering tasks. You’ll work across the full lifecycle of B2B initiatives: understand → shape → build → ship → measure → iterate This is not a frontend or backend-specific role. Our main stack is Ruby on Rails and React, but we care more about strong engineering fundamentals, product judgment and the ability to work across the stack when needed. You won’t receive a perfectly specified backlog. You’ll be expected to help create the work: understand merchants and the business, challenge assumptions, work through ambiguity and decide with the team what is worth building. About the Merchant Experience team 🧩 We build the B2B product experiences that help merchants manage and grow their business with seQura. The team owns merchant-facing products and the platform behind them, including order management, analytics, self-service capabilities, growth initiatives and platform features used by other B2B teams. We are a small team of senior Product Engineers and a Product Designer, with no dedicated Product Manager by design . Engineers are expected to contribute beyond implementation: understanding problems, shaping opportunities, making product and technical decisions, shipping solutions and checking their outcomes. Initiatives are led by engineers who take ownership of a problem, gather context, define the hypothesis and success criteria, shape the work, drive delivery and follow up after launch. AI-assisted development is part of our daily workflow. As implementation gets faster, we expect engineers to spend more of their judgment on what to build, why it matters and what we learn from it . What challenges you'll be solving 🚀 Own product initiatives end-to-end, from problem understanding to outcome validation. Act as Champion for initiatives: gather context, define hypotheses and success criteria, shape the work and…