Available for new projects

Claudio Fernandes

Engineer.
Dev.
Maker.

I build systems that work: from frontend to backend, from API integration to process automation. Full Stack by choice, mechatronics engineer by training.

See servicesGet in touch
Claudio Fernandes
> php && python && javascript
automation && systems integration
// online presence

Where to find me

Technical content, open source and conversations about what I am building.

@HeroDjou

Technical content: real projects, automation and development behind the scenes. Straight to the point.

Visit
@herodjou

Project repositories, automation scripts and experiments. Open source whenever possible.

Visit
Claudio Fernandes

Career path, cases and conversations with teams that build real things.

Visit
@HeroDjou

Short doses of technology, code behind the scenes and automation applied to everyday life.

Visit
herodjou.substack.com

Thoughts, stories and behind the scenes of what I am building, straight to your inbox.

Visit
@HeroDjou

Articles and reflections on technology, career and perspectives. Longer, in-depth pieces.

Visit
// services

What I do

Technical consulting, development and mentoring. From the problem to the solution, owning the result.

>_
Full Stack Web Development
Web applications, REST APIs, WordPress and WooCommerce. PHP, Python and JavaScript on the backend; HTML, CSS, Bootstrap and jQuery on the frontend. Web, desktop (Electron) and mobile (Cordova) deliveries from the same codebase.
>_
Automation & Systems Integration
Finding bottlenecks in data flows, integrating systems (CRM, ERP, APIs), writing operational scripts and automating internal processes to reduce friction and increase predictability.
>_
IoT & Prototyping
Projects with Arduino, ESP32 and Raspberry Pi. From concept to a working MVP. A mechatronics engineering background applied to solutions that connect hardware and software.
>_
Software Engineering & Architecture
Structuring scalable projects, optimizing MySQL databases, refactoring legacy code, solving production incidents and defining architecture for sustainable growth.
>_
Technical SEO & Martech
Tracking with Google Tag Manager, data analysis with Google Analytics, integration of marketing platforms (RD Station, Mailchimp) and reports to support decisions.
>_
Consulting & Code Review
Audits of existing projects, finding vulnerabilities, applying security practices and technical review of deliveries. Turning business requirements into viable technical solutions.
>_
Cross-platform Development and Integration
One codebase, three deliveries: web, desktop (Electron.js) and mobile (Apache Cordova). The same business logic on every target, with access to native APIs.
>_
Generative AI & Automation
Combining structured automation with generative AI to build processes that scale without losing adaptability, integrated into the real development workflow.
~/stack.sh
# main stack   languages=( "PHP" "Python" "JavaScript" "HTML / CSS" "MySQL" )   frameworks=( "WordPress / WooCommerce" "Bootstrap" "jQuery" "Electron / Cordova" )   tools=( "Arduino / ESP32" "Raspberry Pi" "Linux / DevOps" "GTM / Analytics / CRM" )   ai_tools=( "GitHub Copilot" "Claude / Claude Code" "Prompt Engineering" )   # echo "ready for the next challenge"
// philosophy

Two worlds. One intersection.

Most people pick one. I work in both, and that is exactly where the value is.

Automation alone leaves money on the table when the unexpected shows up. Generative AI alone turns into conversation without structure. The intersection is where I deliver results: workflows that scale with the consistency of automation and adapt with the intelligence of AI.

>_
Got a project or a technical challenge?
Let us talk about the problem before we talk about the solution.
Get in touch →
// education

Technical foundation

A solid academic background combined with continuous learning. Because technology does not stop.

Educação formal

2022–2026

Professional Master's in Science, Technology and Management

Unifesp, Federal University of São Paulo

Applied research in Science, Technology and Management. A stricto sensu graduate program focused on scientific methodology and knowledge production.

2019–2023

Bachelor's in Mechatronics Engineering

FIAP, São Paulo, Brazil

Robotics, control and automation, electronics and embedded programming with Arduino and ESP32.

2015–2018

Computer Graphics

SAGA, School of Art, Games and Animation, São Paulo, Brazil

Digital design, 3D modeling, animation, visual composition and interactive media production.

2014–2016

Associate Degree in Systems Analysis and Development

Cruzeiro do Sul University, São Paulo, Brazil

Programming fundamentals, databases, software engineering and web development.

Habilidades técnicas

WordPress & WooCommerce92%
PHP / Backend90%
HTML / CSS / Bootstrap90%
MySQL / Relational Databases88%
JavaScript / Frontend85%
Automation & Systems Integration85%
Python80%
Cross-platform (Cordova / Electron)75%
DevOps / Linux72%
// contact

Let us talk

Got a project or a technical challenge? Let us talk about the problem before we talk about the solution.