Matheus Muniz

● Engineered an asynchronous transactional email delivery system within a REST API (API Gateway, SQS, Lambda), significantly enhancing API responsiveness for end-users and streamlining backend architecture for improved long-term maintainability ● Developed and deployed a critical webhook integration (Lambda, API Gateway) for App Store and Google Play payment processors, enabling seamless auto-renewable subscriptions and directly unlocking the primary monetization channel for a mobile application ● Managed the deployment of serverless applications (backend and frontend) utilizing AWS CDK, establishing Infrastructure as Code practices that improved system scalability and contributed to cloud resource optimization ● Proactively monitored application health and performance using CloudWatch and New Relic, diagnosing and contributing to the resolution of production incidents, ensuring minimal disruption to service availability ● Built full-stack solutions (React, Next.js, AWS services) for customer-facing features, actively collaborating with design teams to iterate on and enhance user experience, translating conceptual designs into functional and intuitive interfaces ● Designed and implemented a fully automated free trial lifecycle management system (EventBridge, Lambda), incorporating pre-expiry notifications to enhance user engagement and status management to ensure system integrity, significantly improving operational efficiency and data accuracy ● Contributed actively within an Agile/Scrum framework, offering constructive input during sprint planning, backlog refinement, and retrospectives to improve team velocity and process efficiency ● Developed comprehensive automated API and UI test suites using Playwright, validating critical user workflows and ensuring high feature quality, pre-release bugs and boosting deployment confidence

● Directed the end-to-end redesign of an active ecommerce store (built on Tray, approximately 1,000 daily visitors), improving the product filtering system and enabling agile content updates via a dynamic management interface for admins. These improvements were key to enhancing user engagement and operational efficiency, leading to a clear positive trajectory in conversion effectiveness and revenue generation ● Developed and deployed a series of targeted landing pages using Next.js, TypeScript and Styled-components for a prominent Brazilian financial influencer. These pages were optimized for SEO and conversion and directly facilitated the capture of over 3,500 qualified leads within a 4-week campaign period, significantly expanding their marketing funnel ● Engineered a high-conversion landing page for a new confectionary course launch, utilizing Next.js, React, TypeScript, Styled-components and focusing on responsive designs. This directly supported the client's goal of establishing online presence for a new product line ● Resolved critical email deliverability issues for a client experiencing emails landing in spam. Diagnosed and addressed DKIM/DMARC misconfigurations, restoring reliable communication channels and preventing potential loss of customer engagement and sales ● Executed a comprehensive migration of over 5,000 emails to a new hosting provider (Hostgator). Conducted a cost-benefit analysis of hosting solutions, resulting in the client achieving reduction in annual hosting costs while gaining access to larger storage capacity