Frederico – Python, React, AWS, experts in Lemon.io

Frederico

From Brazil (UTC-3)flag

Full-stack Web Developer|Senior

Frederico – Python, React, AWS

Frederico is a senior back-end engineer with strong production experience in Python and AWS, complemented by experience with React. He specializes in financial processing, workflow orchestration, and LLM-based automation. He demonstrates solid practical knowledge of concurrency, cost optimization, and pragmatic architecture. Frederico has extensive experience as a startup founder and has managed and mentored developers, including international teams.

19 years of commercial experience in
Administration
AI
Architecture
Fintech
Healthtech
Information services
Medtech
Renewable energy
Retail
Software development
Main technologies
Python
5 years
React
7 years
AWS
5 years
Typescript
7 years
Additional skills
DevOps
CI/CD
Amazon SQS
AWS Lambda
Amazon SNS
Kubernetes
FastAPI
Node.js
Amazon ECS
Terraform
Amazon S3
Pandas
Docker
.NET
Scrum
Java
PHP
jQuery
C#
Active Directory
MySQL
Android
Django
Flask
Golang
SQL
ETL
Airflow
Databricks
Apache Spark
LLM
PowerBI
CloudWatch
Gemini API
Salesforce
Spring Boot
GCP
Flutter
Direct hire
Possible
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Experience Highlights

Software Archtect
Dec 2025 - Ongoing7 months
Project Overview

It's a digital customer onboarding platform equipped with an automated document processing engine for a Brazilian renewable energy company.

Responsibilities:
  • Designed and implemented an Anti-Corruption Layer (ACL) to decouple core CRM logic from external channels, enabling safe integration for diverse external partners.
  • Unblocked a critical business bottleneck by autonomously re-architecting the data flow without requiring extensive PM oversight.
  • Scaled digital acquisition capabilities, resulting in a 300% increase in conversions immediately after launch by capturing pent-up market demand.
  • Architected a dual-endpoint Azure Function pipeline to handle high-throughput OCR requests, implementing a "fire-and-forget" asynchronous pattern that seamlessly published results to Azure Service Bus without blocking the main thread.
  • Integrated OpenCV for pre-processing optimization (contrast/B&W) and engineered a cost-efficient, cascaded LLM fallback strategy (from the cheapest to the most advanced model) to enforce data contracts and dynamically validate layouts.
  • Replaced a rigid legacy OCR system in just 3 weeks, elevating document reading accuracy from 62% to 95% and slashing operational processing costs by over 60%.
Project Tech stack:
.NET
Python
React
Tech Lead
Jul 2025 - Nov 20253 months
Project Overview

It's a global provider of commercial data and analytics that helps businesses with credit risk, sales and marketing, supply chain, and compliance decisions using its database of hundreds of millions of companies

Responsibilities:
  • Led the technical direction of strategic global projects and ensured delivery quality.
  • Coordinated engineering teams with a focus on performance, CI/CD, and DevOps best practices.
  • Acted hands-on and consultatively with Python and cloud computing.
Project Tech stack:
Python
CI
CD
DevOps
Tech Lead
Apr 2021 - Jul 20254 years 3 months
Project Overview

It's an AI-driven customer experience automation and core billing orchestration for a Brazilian digital banking platform.

Responsibilities:
  • Architected the generative AI solution for customer service automation.
  • Elevated the customer service automation rate from 50% to 93% within 60 days.
  • Built a high-criticality bank batch processing and billing system from scratch.
  • Led a lean squad of 2 developers to deliver a functional MVP in 7 days.
  • Covered 80% of the billing operation within 30 days
Project Tech stack:
Python
FastAPI
Pandas
Node.js
AWS
AWS Lambda
Amazon ECS
Amazon S3
Amazon SNS
Amazon SQS
Docker
Kubernetes
CI
CD
Terraform
CTO & Founder
Mar 2019 - Apr 20212 years
Project Overview

It's a digital marketplace and logistics app tailored specifically for the pharmaceutical retail sector.

Responsibilities:
  • Engineered a high-frequency universal ETL pipeline from scratch to synchronize 7,000+ SKUs across heterogeneous pharmacy databases, reducing sync latency to under 15 minutes.
  • Owned the end-to-end technical delivery (Zero-to-One), validating the core business model, which directly secured Angel and Venture Builder funding rounds.
  • Designed a highly scalable software architecture that resolved critical pharmaceutical logistics bottlenecks, earning the international "Top 100 Healthcare Visionaries Award" in Las Vegas.
Project Tech stack:
.NET
Python
Flutter
PHP
Typescript
Node.js
React
Founder & Tech Consultant
Aug 2018 - Feb 20201 year 6 months
Project Overview

It's a high-performance software development factory and IT governance consultancy.

Responsibilities:
  • Developed corporate solutions using Python and .NET with a focus on governance.
  • Led cloud audits and infrastructural re-architectures (leveraging AWS and Terraform) that historically resulted in monthly infrastructure cost reductions of up to 90% for clients.
  • Structured, coordinated, and led multidisciplinary engineering teams distributed across Brazil, the USA, and Canada.
  • Managed complex enterprise contracts, ensuring that all technology deliverables strictly aligned with business data, facts, and profitability goals.
Project Tech stack:
Python
.NET
React
Typescript
Flutter
C#
Founder
Mar 2015 - Apr 20183 years
Project Overview

It's a centralized IT infrastructure and management system.

Responsibilities:
  • Led the end-to-end digital transformation and IT infrastructure centralization across 14 distributed branches, replacing legacy operational bottlenecks with a unified, scalable system.
  • Directly aligned technical architecture with business goals, deploying an optimized data flow that unlocked new operational capacities and doubled (100% increase) the client's revenue within the first 3 months post-deployment.
  • Managed cross-functional technical teams and governed IT contracts, ensuring high-availability and security compliance required for sensitive digital certification operations.
Project Tech stack:
.NET
PHP
MySQL
Python

Education

2026
Engineering/Industrial Management
Master’s Degree

Languages

English
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