Carlos Stutz Zillner

Carlos Stutz Zillner  new_releases

About

Detail

CTO, End-to-end Product Developer, Full-stack Developer
Holambra, State of São Paulo, Brazil
Contact Carlos regarding: 
work
Full-time jobs
Starting at USD9k/month

Timeline

work
Job

Résumé

Jobs verified_user 9% verified
  • F
    AI Product Engineer
    Function Web Studio
    Feb 2026 - Current (9 months)
    LAV - Unattended Payment Terminal
    - Designed and built LAV, an unattended payment-terminal platform for laundromats, vending machines, and other self-service equipment.
    - Machine integration: developed the communication layer in C++ to connect the payment terminal with laundromat equipment, vending machines, and other self-service devices.
    Authentication and platform integration: built FastAPI services for secure authentication and communication between the system's platforms.
    - Account and access management: developed the Django back office for managing customer accounts, permissions, access control, and operational dashboards.
    Terminal application: created the terminal app using Kotlin and React Native, supporting
  • FundingPips
    DevSecOps Lead public Remote experience
    FundingPips
    Dec 2023 - Feb 2026 (2 years 3 months)
    - As the founder of the DevOps department, I managed over 50 servers independently before scaling the team.

    - Main platform deployment, code review, and performance tuning across Ruby on Rails and React.

    - Created a system for generating ephemeral application test environments using Terraform, Shell, ECS, React, and CI/CD.

    - Mitigated DDoS, Slowloris, SQL injection, bot, and other attacks using Cloudflare, WAF, Nginx, and Django.

    - Built a low-latency real-time abuse detection platform with automated IP blocking, log analysis, sliding windows, and Cloudflare/WAF integration using Python, Django, FastAPI, Lambda, and Redis.

    - Tuned and maintained production PostgreSQL for large datasets
  • Manas.Tech
    Full-stack Engineer verified_user Verified experience public Remote experience
    Manas.Tech
    Jun 2022 - Oct 2023 (1 year 5 months)
    - Changed the logic to generate labels and QR codes for exams on CDX, a system that seeks to use diagnostic data to improve healthcare delivery, outbreak detection and response, and health systems management using Ruby on Rails and React.
    - Worked on Nikola Motors software that manages eletric truck fleets using Ruby on Rails, Tailwind and Stimulus
    - Refactored all the front end of company's website manas.tech using Middleman and jQuery
    - Started to Refactor Crystal Language website using Jekyll and Javascript
    - Created the whole new front end on b
  • R
    CTO / Co-Founder
    Rock The Bank
    Mar 2017 - Jul 2022 (5 years 5 months)
    - Created a high-performance, scalable financial education platform from zero.
    - Evaluated multiple backend frameworks and selected Django as the platform’s core framework.
    - Actively collaborated with a design agency on brand development, UX, and UI design.
    - Initially delegated frontend development to another developer. We started with Angular and later migrated to TypeScript and vanilla JavaScript.
    - Developed the platform’s gamification system and real-time features.
    - Achieved a PageSpeed Insights score of 99 across all metrics and led extensive SEO and SEM optimization efforts.
    - Built the entire AWS infrastructure using ECS, API Gateway, Lambda, RDS for PostgreSQL, and MySQL.
    - Trained and mentored
  • SOMOS Educação
    Full-stack Developer
    SOMOS Educação
    Aug 2016 - Mar 2017 (8 months)
    Worked independently on a login-system migration and ongoing page and functionality changes. The platform was built in Django and I had the ownership to decide technology and many UX UI improvements

    www.sejaetico.com.br
    Stack: Python/Django, Less, Sass, HTML/CSS,jQuery, AWS, API Restful
  • T
    CTO / Co-Founder
    TBL Manager
    Jul 2013 - Dec 2015 (2 years 6 months)
    - Built TBL Manager, an ESG and sustainability management platform developed in PHP using Function’s proprietary framework.
    - Designed, deployed, and maintained the AWS infrastructure supporting the platform, using Elastic Beanstalk, AWS Lambda, and MySQL.
    - Enabled sustainability consultants to create fully dynamic ESG assessment forms without requiring custom development.
    - Designed an automated integration between form responses, dashboards, performance indicators, and sustainability metrics.
    - Implemented advanced calculations, scoring models, and mathematical functions to support ESG analysis and reporting.

    Own PHP Framework, AWS, jQuery, HTML, CSS, UX, Design, DevOps
  • Titans Group
    Senior PHP/Python Developer
    Titans Group
    Oct 2011 - Feb 2012 (5 months)
    At Titans I worked on a deadline project that was a File Cloud, developing the API that would communicate with different platforms. Experience with Python/Django Main Project: Claro Ideas
  • A
    PHP Senior Developer
    Akna Software
    Dec 2010 - Mar 2011 (4 months)
    Mailmarketing system, focus on high performance scripts, databases with many records, etc.
  • F
    CEO / CTO / Founder
    Function Web Studio
    Aug 2010 - Dec 2015 (5 years 5 months)
    - Managed 6 developers.
    - Built a proprietary PHP and jQuery framework to accelerate SaaS product development.
    - Developed a real estate SaaS platform using PHP and jQuery.
    - Developed a school management SaaS platform for managing students, grades, classes, lessons, and other academic operations.
    - Developed a church management SaaS platform for managing members, ministries, and administrative processes.
    - Created multiple e-commerce stores using Magento and our proprietary PHP platform and Django.
    - Created Flying Bundle, a global game bundle platform, and designed its cybersecurity architecture using AWS WAF and network security rules.
    - Built an internal PHP framework and delivered websites, portals, c
  • P
    PHP Developer / Tech Manager
    Picture Informatica LTDA
    Mar 2010 - Dec 2010 (10 months)
    - Creation of a standard CMS, in MVC, with easy customization and maintenance.
    - Development of projects for major brands with excellence, generating new business.
    - Experience in promotional mechanisms, sweepstakes, rankings, sending promotional codes, etc.
    Main Projects:
    Nestlé: Promotion with drawing and sending SMS coupon
    Globo: CD/DVD media portal for distribution at advertisers' fair
    Personal: Promotion with drawing and sending SMS coupon
  • UOL
    Front-end
    UOL
    Mar 2008 - Mar 2010 (2 years 1 month)
    UOL is the greatest national portal.
    - Experience with large publishing systems and development standards for high-access portals.
    - Implementation of wordpress to replace UOL's old blogging system.
    - SEO training (organic search)
    - UOL TV Player Maintenance
  • E
    Full-stack Developer PHP
    Ebusines Desenvolvimento de Software Ltda
    Nov 2005 - Mar 2008 (2 years 5 months)
    - Criação do produto e-Lever, criando identidade , logotipo, definindo estratégias de marketing, arquitetura do sistema, etc.
    - Criação da base do produto em MVC de forma que os programadores envolvidos no projeto pudessem produzir telas em tempo reduzido. Fizemos
    um CRM que normalmente demoraria 2 anos em cerca de 4 meses.
    - Projeto de Rent System do McDonalds, criação de portais para locadores e franqueados.
    - Participação (como desenvolvedor) em reuniões de venda e desenhos de projetos.
    Principais Projetos:
    McDonalds - Portal do Locador (PHP + Front-End + Oracle + Servidor HPUX)
    e-Lever - CRM Web (Criação de um Framework próprio, Identidade do produto, Material de Divulgação)