I'm Vagner Maltauro

Owned the end-to-end billing infrastructure for Solvefy.cloud, integrating Stripe, PIX, and bank transfer for pre-paid and post-paid flows — directly driving a 70% increase in paid subscriptions. Re-architected the platform into a fully scalable multi-tenant white-label system using Design Tokens, enabling runtime customization of branding, themes (dark/light), and per-client configurations without code forking. Diagnosed and fixed a high-severity session expiration bug that was silently logging out users after ~5 minutes, restoring platform stability and improving user retention. Engineered AI-powered features and automation workflows for the Easy CDP product, streamlining user journeys and reducing manual operational tasks at a measurable scale.

Architected and built the entire illustration gallery end-to-end — an AI pipeline that received images, generated descriptions and keywords via LLM, then automatically translated that content into multiple languages, expanding international reach by 80%. Led the full SSO implementation across frontend and backend, enabling enterprise clients to authenticate through their own identity providers. Implemented FAPIAO payment method end-to-end, opening a new revenue stream in the Chinese market. Drove page performance scores from an average of 30% to above 95% across all major pages by auditing and optimizing Core Web Vitals, SEO, and accessibility. Reduced application error rate by 40% by establishing automated backend testing from scratch and integrating Bugsnag for real-time error observability.

Built and consumed REST APIs end-to-end, designed backend endpoints, and integrated third-party services into client applications. Developed custom JavaScript automation scripts and WordPress solutions with custom PHP, including theme customization and plugin integration. Applied SEO and Core Web Vitals optimization achieving up to 80% increase in organic traffic, managing full project lifecycles with 100% on-time delivery.