Financial services
Financial-services engineering
APIs, automation and data integration.
Behind the work
Sicredi Liberdade
Experience with backend APIs, Python automation, data integration, production support and technical documentation.
Software. Engines. New possibilities.
Curiosity,in motion.
I’m Daniel Gaio, a computer engineer working across software, data and applied AI.
Selected work
ProsperSync / Capture
Images and voice into expense data
Behind the work
Personal project · Product engineering
Building the expense-capture experience of a personal finance application, using images and voice as inputs. This work brings together the Next.js application, PostgreSQL and OpenAI.
Explore ProsperSync
ProsperSync / Systems
AI integration and delivery
Behind the work
Personal project · Backend integration and delivery
Built a financial-analysis service with Python, FastAPI and LangGraph, with shared model configuration and provider integration. Delivery work also includes automation for application-function deployments and database migrations.
Explore ProsperSync
Beyond the code
A little curiosity.
A lot of adventure.
Motorcycles / Cars / Adventure
My storyBackground, perspective and what comes next
My path connects computer engineering with software and automation in financial services. Across these experiences, I’ve worked with backend APIs, data integration, production support and technical documentation.
ProsperSync is where I explore a product of my own: a personal finance application that combines expense capture from images and voice with conversational financial insights. Building it also means connecting AI services to the product and working on shared configuration and delivery automation.
This website is my next learning project. I’m building it with TypeScript, Node.js and AWS, with practical exercises in security, reliability, observability and distributed systems. I want to show the decisions, tradeoffs and lessons as the work develops.
I write about the practical side of building with AI, working with complex systems and what I’m learning along the way.
Browse all writingBUILDING & LEARNINGThis website is part of the work.
I’m building this portfolio on AWS to get hands-on with security, resilient delivery, caching and observability. The goal is to make the decisions and lessons worth sharing.
- Security
- Resilience
- Observability
- Distributed systems
Let’s build useful things.
Have a problem to solve, a project to build or an opportunity to discuss? I’d like to hear about it.