kauan kelvin

I’m a Software Engineer focused on modern frontend development with React and Next.js, using TypeScript to deliver web product architecture that scales. I’ve built SaaS applications, analytical dashboards, and highly critical multi-tenant platforms, with a strong emphasis on performance, reliability, and calm execution under pressure (ex-Amazon).

In a project-based contract, I developed analytical components with React and Next.js and integrated real-time financial indicators via Recharts, reducing heavy chart loading time by approximately 40%. I also mitigated critical production failures, preserved cloud database integrity, and structured relationships with Prisma ORM, using AWS CloudWatch for root cause analysis. From there, I resolved routing failures in a VPC, normalized webhook flows, and fixed broken Docker container builds caused by dependency conflicts in monorepos.

As a freelancer, I built an end-to-end document automation platform with secure checkout flows integrated with payment gateways (PIX). I accelerated the MVP validation cycle by reducing operational validation time from days to minutes through REST API-driven data synchronization, while also configuring production environment setup, domain mapping, and CI/CD to maintain high availability. Later, I designed an affiliate and e-commerce platform architecture with Next.js and React, targeting SEO and Core Web Vitals.

I’m energized by problems that require both engineering rigor and clear decision-making. I’ve implemented intelligent caching with TanStack Query and debouncing to reduce server requests by 70%, and I built authentication and RBAC-based access control with secure session validation. At Amazon, I served as a focal point for crisis management under strict SLA metrics—applying root cause analysis to prevent flow failures—and the same analytical mindset continues to drive how I build, optimize, and troubleshoot today.