tiagogcastro.com.br · LinkedIn · Resume · Email
Fullstack Cloud Developer (Systems Analysis and Development graduate) with full-level experience in web systems, APIs, marketplace platforms, Data Lake, infrastructure as code and AI applied in production. I work end to end: product development, cloud architecture, integrations, automations and infrastructure optimization.
HITSS | Lakeit (Jan 2024 - present): technical evolution of an enterprise Data Lake platform in production with active customers. Reorganized AWS infrastructure with Terraform/Terragrunt (cutting monthly costs from $2,300+ to $800-1,000), evolved event-driven pipelines (S3, SQS, SNS, Step Functions, Glue, Athena, Lambda, Lake Formation) and built an AI assistant for data exploration with Bedrock, RAG and Athena SQL generation.
Futbuynow (Feb 2023 - present, freelance technical owner): marketplace for digital products in the gaming niche with 11,000+ users and 20,000+ paid orders. Monorepo with Node/Express API, React/Vite dashboard and Next.js website; OpenPix, Stripe and PayPal flows; technical SEO that reached 30.4k organic clicks in 12 months.
Check out my portfolio site: tiagogcastro.com.br - websites, systems and digital products I build and evolve.



