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Jean Crepaldi

São Paulo, Brazil

Jean Crepaldi

Senior Full-Stack Developer

I build web systems with C#/.NET and Python/Django. I currently work at Prodesp on São Paulo State Government projects, and on my own time I ship products end to end, from database to deploy.

See projects Download résumé
Since 2017
building software
4+ years
at Prodesp, on São Paulo State systems
4 systems
built from scratch

Projects

From public services to my own products: systems I helped build from scratch.

São Paulo State, built as a team at Prodesp

São Paulo Services Portal

The official catalog of São Paulo State public services, built from scratch with the team: citizens find a service and see how to apply, what to bring, what it costs and where to go.

  • Public portal with search and filters by agency, region and service channel
  • Standardized service pages: what it is, who it's for, how to apply, documents, timing and cost
  • CensoSP, the back office where agencies register and maintain their services
  • REST API and integration microservices for other government systems
  • gov.br sign-in, sign language support and citizen ratings for each service
  • Django
  • Django REST Framework
  • Java
  • Quarkus
  • Apache Camel
  • SQL Server
See project details Visit servicos.sp.gov.br
servicos.sp.gov.br
Services Portal home with search and most-used services
A service page on mobile

In production for a client

Neri Artigos

End-to-end management system for a maker of religious metal goods, used daily by the team and its customers.

  • Orders with a status pipeline, full history and branded PDFs
  • Per-customer order link so clients place orders from their phone
  • Price list per material, with bulk price updates reviewed before they apply
  • Finance module with payables, receivables and cash flow
  • Automated GitHub Actions deploy with backup, smoke test and rollback
  • Django
  • PostgreSQL
  • ReportLab
  • nginx
  • gunicorn
  • GitHub Actions
See project details Visit neriartigos.com.br
neriartigos.com.br/app
Dashboard with orders by status, monthly revenue and upcoming deliveries
Customer order page on mobile

Personal product, installable app

Isola

Splits any song into vocals, drums, bass and other instruments with AI, and doubles as a practice studio for drummers.

  • Stem separation with Demucs in a background queue, with live progress
  • In-browser multitrack player: solo, mute, independent pitch and speed, A–B loop
  • BPM, key and chord detection synced to playback
  • Drum transcription to sheet music, MIDI and MusicXML
  • Practice routine with 40 rudiments, grooves, metronome and timing accuracy
  • Django
  • Celery
  • Redis
  • Demucs
  • FFmpeg
  • librosa
See project details
isola/musicas
Isola home screen on mobile

Personal product, mobile-first

Ponto Fácil

Time tracking for nannies and caregivers who work for several families: clock in, close the month and charge via Pix.

  • Clock-in per family with hourly rate, transport and expenses
  • Schedule with recurring visits
  • Monthly PDF report per family
  • Pix payment QR codes generated in-house (BR Code)
  • Django
  • PostgreSQL
  • xhtml2pdf
  • qrcode
  • whitenoise
See project details
Home with a running clock-in and weekly hours
Monthly schedule with work days marked
Clock-in history per family

Screens of personal products and Neri show sample data.

Experience

Full profile on LinkedIn

  1. Nov 2025 – present

    Senior Full-Stack Developer

    Prodesp, São Paulo State Government

    CensoSP, which gathers every public service with step-by-step guidance for citizens, and Bolsa do Povo, the network connecting the State's social programs. I work from planning to maintenance, integrate CensoSP with the main government systems through secure data exchange and work with the security team to protect beneficiary data.

    Stack: Python, Django, Java, Quarkus, Apache Camel, SQL Server, OpenShift

  2. Jun 2023 – Nov 2025

    Full-Stack Developer

    Prodesp, São Paulo State Government

    Built CensoSP and the Services Portal (servicos.sp.gov.br) from scratch with the team, and evolved Bolsa do Povo. Remote.

    Stack: Python, Django, C#, .NET, SQL Server, Git

  3. May 2022 – Oct 2023

    Tier 3 Support Analyst and .NET Developer

    Prodesp, Bolsa do Povo program

    Tier 3 support and development for Bolsa do Povo, a high-impact program providing financial support to citizens through a network of social programs: bug fixes, security updates and improvements.

    Stack: C#, .NET MVC, Microsoft Dynamics, SQL Server, JavaScript, AJAX

  4. Apr 2020 – May 2022

    Systems Support Analyst

    Target Facilitadores de Informação

    Support, bug investigation and testing for Normas and GEDWeb, platforms for ABNT/NBR technical standards.

    Stack: ASP.NET, C#, AWS, SQL Server, Postman

  5. Oct 2018 – Mar 2020

    Web Developer

    Openness Technology

    Built and maintained Miller, a web system for speech therapists.

    Stack: PHP, Laravel, AWS, Docker, MySQL

  6. Oct 2017 – Oct 2018

    Web Developer

    Fox Solution

    Custom websites and CMS for businesses.

    Stack: PHP 7, HTML5, CSS3, JavaScript, MySQL

  7. 2015 – 2017

    IT Support Analyst and Junior Support Analyst

    Retail Services and Grupo Unite

    Tier 1 and 2 support, Oracle Simphony POS, Windows Server, Active Directory and Exchange.

Education

  1. 2020 – 2023

    Associate degree in Systems Analysis and Development

    Cruzeiro do Sul University

  2. 2016

    C# .NET and ASP.NET MVC course

    Clarify

  3. 2014 – 2016

    IT Technician

    Senac São Paulo

Portuguese
native
English
upper intermediate (B2)
Citizenship
Brazilian and Italian (EU)

Skills

Back-end

  • C#
  • .NET and ASP.NET MVC
  • Python
  • Django
  • Java and Quarkus
  • PHP and Laravel
  • Celery

Front-end

  • JavaScript
  • HTML and CSS
  • Bootstrap
  • Web Audio API
  • PWA

Data

  • SQL Server
  • PostgreSQL
  • MySQL
  • Redis

Infra

  • AWS
  • Docker
  • OpenShift
  • nginx
  • GitHub Actions
  • Git

Let's talk about your next system.

Open to new roles, projects and consulting: on-site, hybrid or remote.

[email protected] LinkedIn Download résumé