Jean P.

Jean P.

São Paulo, Brazil
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About Me

Jean is a Software Developer with 8+ years of experience in Python programming and advanced back-end concepts. He develops system architectures, steers technical planning, and enhances design decisions on projects using Python and web-based frameworks. Jean develops, tests, and maintains solutions, delivering highly responsive web applications with performant back-end components that improve server-side logic and performance. In his current engagement, he implements OpenAI API features and works with RAG, LangChain, function calling, and structured output.

Frontend

CSS HTML JavaScript

Backend

Python Django Flask

Database

MongoDB

DevOps

Docker

QA & Testing

Selenium

Other

Data Analysis Scala Numpy Matplotlib Pandas

Work history

UpStack
UpStack
Python Developer
2022 - Present (3 years)
Remote

  • Creating and developing innovative software solutions for clients across a broad range of industries.

  • Participating in scrums consisting of cross-functional teams, both software and hardware.

  • Ensuring that features are being delivered efficiently and on time.

PythonDjangoFlaskJavaScriptHTMLCSSScalaMongoDBDocker
Banco Daycoval
Banco Daycoval
Python Developer
2024 - Present (1 year)
São Paulo (Hybrid), Brazil

  • Implementing OpenAI API features like chat completions, image recognition, voice transcription, etc.

  • Working with RAG, LangChain, function calling, structured output, etc.

  • Integrating C# with Python and PostgreSQL development for the deployment of OpenAI capabilities.

PythonOpenAILLM Python 3 SQL ServerC#C#.NET PostgreSQL 9 NginxAPI Retrieval-augmented Generation (RAG) LangChain PostgreSQL
Easy2Tech
Easy2Tech
Software Developer
2022 - 2024 (2 years)
São Paulo, Brazil

  • Implemented MySQL on the company system.

  • Translated a Python Pandas processing to a MySQL stored procedure to save processing costs.

  • Responsible for the company's overall tech decisions.

PythonPython 3 MySQLHeroku PipelineHerokuDevOpsTest AutomationPandasSQL Stored Procedures
Workana
Workana
Python Developer
2021 - 2022 (1 year)
Remote

  • Developed and extended software solutions of high complexities, delivering components that meet coding standards.

  • Built and enhanced solutions, UIs, and back-end processes, providing support for legacy systems on projects.

  • Evaluated existing and new technologies, ensuring that solutions follow modern industry best practices.

PythonJavaScriptDjangoFlaskMongoDB
Nubank
Nubank
Business Analyst
2020 - 2021 (1 year)
São Paulo, Brazil

  • Developed and implemented new software modules and solutions to enhance data and decision-making within Nubank.

  • Contributed to current modules, added new features, and fixed bugs on the project.

  • Delivered solutions to complex issues, worked on high-priority deliverables, and added value to the business.

ScalaPythonMatplotlibDjango
Up.p
Up.p
Software Developer
2019 - 2020 (1 year)
São Paulo, Brazil

  • Built and deployed an innovative loan valuation system with features to calculate advances, payments, and settlements.

  • Designed and executed tests to cover all features, modules, and components on solutions.

  • Deployed a Python/Selenium-based bridge to handle communication between internal systems and the central bank.

PythonSeleniumBitbucketGitDjangoValuation Testing
BW Gestão de Investimentos
BW Gestão de Investimentos
Business Analyst
2018 - 2019 (1 year)
São Paulo, Brazil

  • Coordinated and organized numerous source documents to generate financial reports using Python and VBA.

  • Analyzed data and verified reports for accuracy through visual checks, Excel calculations, and database comparisons.

  • Diagnosed and resolved report issues on the project.

Excel VBAPythonPandasDjangoVBA Visual Basic for Applications (VBA) Microsoft ExcelData Analysis
Spinnaker Capital
Spinnaker Capital
Business Analyst
2018 - 2018
São Paulo, Brazil

  • Maintained and updated trades for the hedge fund using VBA-related processes.

  • Automated spreadsheet tasks, created reports, and sent emails.

  • Collected and synthesized information to form a logical conclusion and provide recommendations to managers and investors.

PythonExcel VBAVBA Hedge Funds Business AnalysisInternational Trade Spreadsheets Spreadsheet Automation Visual Basic for Applications (VBA)

Showcase

Python Developer - Up.p
Python Developer - Up.p

  • Up.p is a fintech platform offering financial tools to make financing options easier for users in Brazil

  • Implemented a new valuation system and executed tests for code quality

  • Managed integration processes with external systems

Python Developer - Nubank
Python Developer - Nubank

  • Nubank is a leading fintech company in Latin America, recognized globally as the largest independent neobank with a primary offering of a no-fee credit card managed via a mobile app.

  • Performed data analysis on the Nubank platform.

  • Developed solutions for presenting reports to managers, enhancing decision-making processes.

Education

Bachelor's Degree, Mechanical & Aeronautical Engineering
Bachelor's Degree, Mechanical & Aeronautical Engineering
Instituto Tecnológico de Aeronáutica (ITA) - Brazil
2013 - 2017 (4 years)