~/ renan.mello
$ whoamiBelém, Brazil

Renan Mello

FULL-STACK DEVELOPER

From financial systems
to intelligent applications.

Thoughtful interfaces.
Practical engineering.

Explore my work
Code with purpose.Scroll to explore
01 / about.md

A practical mind.
A considered approach.

I’m a full-stack developer based in Belém, Pará, Brazil. My experience spans financial systems, web applications and backend engineering for AI agents.

I’m passionate about Web3 and the financial market, with a focus on delivering a good, intuitive user experience.

More about my background
02 / projects/

Ideas, implemented.

Featured work
01

AI Sports Coach

A tool that analyzes running data and provides insights into performance and training.

  • Python
  • React Native
  • FastAPI
  • Machine Learning
  • AI
  • TypeScript
02

Brigabis Botin production

A production WhatsApp assistant for Brigabis, connecting customer service, order capture and a customer-centered CRM. Combines RAG with an AI configuration agent that proposes message, menu and document changes for review before applying them.

  • TypeScript
  • Node.js
  • Express
  • PostgreSQL
  • Next.js
  • AI Agents
  • RAG
03 / experience.log

The path so far.

2018 — present

September 2025 - Present

Accenture - Custom Software Engineer Analyst

Belém, Brazil

  • Act as a backend engineer in an AI customer service platform built on Large Language Models (LLMs), responsible for maintaining and evolving specialized agent use cases within a serverless architecture.
  • Identified and fixed failure patterns that caused hallucinations and incorrect use case execution, resulting in a ~15% decrease in agent misrouting and response errors, and increased overall platform reliability.
  • AWS Lambda
  • OpenSearch
  • CloudWatch
  • DynamoDB
  • Jenkins
  • Node.js
  • TypeScript

February 2025 - November 2025

Freelancer - Fullstack Developer

SECOP - Secretary of COP 30 - Belém, PA, Brazil

  • Developed a real estate management system for SECOP (Extraordinary Secretary for COP30, PA, Brazil) to support infrastructure for COP30, expected to host over 60,000 attendees.
  • As Belém has only ~30,000 hotel rooms, the system enables the secretary to onboard real estate agencies, allowing them to list private properties for short-term rental to meet the remaining demand.
  • Streamlined the property onboarding process for real estate agencies, significantly accelerating the standardization and validation of listings to match COP30 requirements, cutting correction and response time by over 70%.
  • TypeScript
  • Next.js
  • Tailwind CSS
  • PostgreSQL
  • AWS
Earlier experience 2024 — 2018 · 4 roles

August 2022 - August 2024

XP Investimentos - Investment Advisor

Biggest broker in Brazil

  • Assisted clients with their investment portfolios at one of the oldest XP Investimentos offices, overseeing more than 1 billion Reais in assets under custody.
  • Developed Python automation tools to help other advisors improve the speed and accuracy of investment visualizations for their clients, significantly improving quality and optimizing time. Previously, this was a manual Excel process that consumed a considerable amount of the commercial team's time.
  • Python

January - August 2021

INOA - Fullstack

Rio de Janeiro B2B company with about 50 software developers that work with the biggest financial market brokers in Brazil. The company's main goal is to automate, manage and integrate processes, in order to create a more efficient financial market.

  • Implemented automatic execution of market options on their maturity date, directing the funds to respective wallets, and developed a dedicated client page. This involves retrieving public data from the B3 (Brazilian Stock Exchange) using a web scraping and aligning it with the funds' wallets.
  • Created scripts for resetting and applying maintenance changes on the client server.
  • The development was carried out using Python, Django, SQL, and JavaScript.
  • Python
  • Django
  • JavaScript

July 2020 - January 2021

AGE PA - IT Manager

State-owned audit firm.

  • Managed the infra net server as well as the firewall.
  • Windows Server

November 2018 - December 2019

PRODEPA - Intern

Set up and installed network switches across Pará state using switching programming language, including public schools and government agencies.

  • Monitored the network using Zabbix to ensure prompt action in case of failure, guaranteeing uninterrupted internet service throughout the state of Pará.
  • Switch Programming