Diogo Oliveira

+55 45 99959-4687

Work History

2021 - 2025

In less than a year deployed the Data Room and Document Storage system, ensuring differentiated access for public and private users while maintaining strict legal confidentiality protocols.
Responsible for the API integration, infrastructure, and AI summarization system.
These features accounted for 20% of the overall revenue for the company.
Designed and implemented the initial backend setup using Nest.js and frontend setup using Next.js.
Set up CI/CD pipelines using GitHub Actions for seamless deployment.
Configured and managed production and staging environments on AWS.
Created a highly scalable document management solution tailored to specific needs.
Developed the foundational AI infrastructure using Python (Flask), Langchain, OpenAI, and Pinecone for advanced functionality.
Built a custom calendar solution for managing appointments, ensuring compliance with UI/UX requirements.
Led a cross-functional team spanning US/Brazil time zones to address customer and operational requests efficiently.

Next.jsNest.jsReactTypescriptPythonFlaskLangchainMaterial UIPostgreSQLGithub ActionsREST APIsAWSVercel

2018 - 2021

Acted as a decision-maker for software architecture and technology selection for a high-traffic Single Page Application (SPA) portal.
Designed and implemented key features that successfully grew the active user base from 10K to 1M users.
Led the development of an onboarding portal for customers redirected from the main landing page using Next.js.
Built a robust User/Company dashboard utilizing Next.js, Apollo, and GraphQL, transitioning from a mixed Express.js and AWS service integration to a fully optimized GraphQL API.
Delivered multiple landing pages using React.js to onboard diverse customer segments.

Next.jsReactReduxExpress.jsApolloGraphQLAWS

2016 - 2019

Developed cutting-edge web applications, mobile applications, and APIs for government projects in Brazil and internationally.
Designed and implemented RESTful APIs using Express.js, Node.js, MongoDB, and JWT for secure and efficient data handling.
Built React Native mobile applications to seamlessly integrate with the developed APIs.
Created a responsive and user-friendly web portal using React.js and Material UI, ensuring smooth API integration and a cohesive user experience.

Express.jsNode.jsMongoDBJWTReact.jsMaterial UIReact Native

2014 - 2015

Established portfolio of client websites, CRM, and Freight Transport Management system ensuring high performance and up-to-date features.
These features allowed the company to unlock 10 business clients.

.NET FrameworkASP.NET MVCAngular.jsSQL Server