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André Araujo

@andraraujo

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Backend Software Engineer at DashSkins who cut API costs by 43% with a custom system.

Brazil

Message

At DashSkins, I implemented a custom system using NestJS, TypeScript, and PostgreSQL that reduced external API costs by 43%. I also improved backend performance by reducing AWS EC2 RAM consumption and API response time.

Previously, at TATIC, I architected a Kafka-based communication layer and implemented a multichannel notification system. At DEVMAGIC, I contributed to migrating a legacy PHP system to Node.js and implemented Stripe and PayPal payment gateways.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer | Back-end

Current

DashSkins

Mar 2024 - Present (2 years 8 months)

Reduced external API costs by 43%, RAM consumption by 75%, and backend response time by 56% through system optimization and architecture improvements. Implemented caching, streaming, and fuzzy search to enhance performance and user experience.

NestJS TypeScript PostgreSQL MongoDB NodeJS EC2 SQL Caching Streaming Fuzzy Search

Software Developer | Back-end

Tatic

Apr 2022 - Mar 2024 (1 year 11 months)

Increased test coverage from 50% to 90% and reduced system coupling and latency by architecting microservices with event-driven patterns. Implemented centralized multichannel notification system and integrated SonarQube into CI/CD pipeline.

Jest NestJS TypeScript Kafka Microservices CI CD SonarQube NodeJS

Software Developer | Back-end

DevMagic

May 2021 - Apr 2022 (11 months)

Migrated legacy PHP system to Node.js and TypeScript, increasing processing speed by 30%. Implemented Stripe and PayPal gateways, deployed serverless functions on AWS Lambda, and automated data migrations with custom scripts.

NodeJS Express TypeScript Stripe PayPal AWS Lambda Firebase JavaScript