Compra Certa

Compra Certa was conceived as a direct response to the shifting dynamics of Brazil’s e-commerce ecosystem—a landscape defined by high consumer demand, increasing platform centralization, and a growing overreliance on major marketplaces. From the beginning, the goal wasn’t simply to launch a store—it was to build a fully independent, brand-led commerce platform capable of standing on its own infrastructure, powered by trust, usability, and performance.

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I led the initiative as both developer and entrepreneur, overseeing every phase of the venture—from UX design and back-end architecture to marketing strategy and business modeling. The platform prioritized secure, responsive transactions, seamless analytics integration, and a user experience calibrated for speed, clarity, and conversion. Every detail, from page speed to product layout, was built not just to function, but to perform under pressure—turning visitors into buyers with minimal friction.

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But Compra Certa was also engineered to be a learning system. It became a live case study in lean methodology, customer behavior, and real-time brand validation. I implemented detailed analytics pipelines to understand user navigation patterns, cart abandonment signals, and bounce-rate bottlenecks. A/B testing environments allowed me to continuously optimize content, product bundles, and checkout flows. Through this iterative process, I gained measurable insights into consumer trust dynamics—how non-marketplace brands can earn confidence in seconds, and how design precision and message clarity can dramatically affect sales.

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One of the core challenges I faced was building consumer credibility without the inherent trust of a known marketplace. Operating independently meant having to architect that confidence into every detail—from pixel-perfect product pages to transparent policies and targeted campaigns. I built custom integrations to verify SSL security, implemented automated post-purchase messaging systems, and structured the visual identity to evoke both minimalism and reliability. Over time, these elements translated into reduced bounce rates, improved session durations, and significantly increased repeat visits.

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Strategically, I took a multi-channel approach to growth. Organic traffic was driven through SEO-optimized content tailored to underserved search niches. Paid media focused on high-intent retargeting and local segmentation. Influencer micro-campaigns were deployed to boost social proof in early stages. These combined efforts produced steady increases in conversion rates and lowered customer acquisition costs—while revealing deeper insights into demand pockets and pricing sensitivity.

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The results were tangible: consistent monthly revenue growth, return customer metrics above the category average, and high customer satisfaction rates reflected in unsolicited positive feedback. These indicators confirmed that even without massive budgets or marketplace clout, a focused, agile operation could compete—if it prioritized intelligence, design, and real user needs.

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Yet more than a business, Compra Certa became a strategic testbed—a real-world lab where I explored the intersection of product development, data-driven UX, behavioral economics, and agile execution. It sharpened my ability to think holistically about business: not only how to build digital systems, but how to engineer trust, test hypotheses in live markets, and scale with precision.

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Looking forward, the lessons from Compra Certa are foundational to my next ventures. They inform how I approach platform thinking, how I design for user confidence, and how I plan to build scalable digital products in environments where friction, not competition, is often the biggest threat. This project didn’t just prove what I could build—it revealed how I think as a founder, and how I lead with both technical fluency and strategic clarity.