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, while diligently utilizing Jira and Confluence for transparent task management and knowledge sharing

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