Own SaaS
MuscleApp
My fitness platform, on web and mobile: users log workouts and meals, hire personal trainers and track their progress. Built from scratch and live in production.
- Next.js
- React Native
- Expo
- Supabase
- TypeScript
Web & mobile developer
Roberto Carrascoso
I build my own products, websites for businesses and tools that solve real problems.
Alcalá de Henares, Madrid
My GitHub activity
Contributions in the last year contributions in the last year
Swipe to explore the whole year.
About me
Experience and education
I am a software developer focused on the web and mobile apps. I enjoy taking an idea from design to launch. Alongside my own projects and client work, I am studying a Higher Vocational Qualification in Web Application Development.
Alcalá de Henares, Madrid
Experience
Own product / Web, iOS and Android
MuscleApp
Design and development of a fitness platform for logging workouts and meals, working with trainers and tracking progress.
Herbolario Sauce / Sercohen / Noni Shop
Web development for clients
Websites for a local shop, a plumbing company and a sustainable fashion brand. Design, development and launch built around what each business needs.
Vocational training placement / 2 months
FASEREM S.L., Rivas-Vaciamadrid
Developed an AI-powered Adobe InDesign extension to automate brochure design, and a mobile app for small restaurants with daily menus and a loyalty points system.
ICP Tech. Solutions / Virtual Life Soluciones Informáticas
Technical support and device repair
Repaired Xiaomi phones at ICP for 3 months. Repaired phones, tablets, laptops, computers and consoles, and helped customers at Virtual Life for 1 month.
Lifeguard / Basic vocational placement
Other experience
Worked as a lifeguard for 3 months and completed a 2-month work placement during basic vocational training.
Education
Higher Vocational QualificationIn progress
Web Application Development
Linkia FP, online
What am I learning?
Programming
Object-oriented programming: classes, data structures, files and database persistence.
Databases
Entity-relationship diagrams, normalised relational models, SQL and stored procedures.
Client-side web development
JavaScript in the browser: DOM, events, forms and asynchronous communication with the server.
Server-side web development
Dynamic pages, logic separated from presentation, secure data access and web services.
Web interface design
Consistent styling, multimedia content, accessibility and usability.
Web application deployment
Web and application servers, secure access, documentation and version control.
Markup languages
HTML and XML: validation, transformation, querying and content syndication.
Development environments
IDEs, testing, debugging, optimisation and class and behaviour diagrams.
Computer systems
Installing and managing operating systems, storage and networks with commands and graphical tools.
Intermediate Vocational Qualification
Microcomputer Systems and Networks
Las Naves Salesianos
What did I learn?
Computer assembly and maintenance
Assembling computers, measuring electrical parameters, diagnosing faults and maintaining peripherals.
Single-user operating systems
Installing, configuring and administering operating systems, file systems and virtual machines.
Network operating systems
Managing users, groups, domains and shared resources, and integrating open and proprietary systems.
Local area networks
Laying out cabling, crimping connectors and installing and maintaining network equipment.
Network services
Configuring DHCP, DNS, FTP, email, web servers, remote access and secure wireless networks.
IT security
Active and passive security, data integrity, network privacy and data protection law.
Web applications
Installing content management systems, e-learning platforms and web applications.
Office applications
Documents, spreadsheets, databases, images, video and presentations, plus user support.
Sources: Royal Decree 1691/2007 and Community of Madrid Decree 34/2009
Basic Vocational Qualification
Computing
Las Naves Salesianos
Secondary school
Compulsory Secondary Education (ESO)
Areas of work
- Web development
- iOS and Android apps
- Interface design
- Product launches
- Device repair
Languages
- Spanish
- Native
- English
- B1
My projects
My own products, websites for businesses and the projects I learn with.
Local business
Herbolario Sauce
The online storefront of a local herbalist in Alcalá de Henares: promotions always up to date and a design that pulls people into the shop.
- Next.js
- React
- Tailwind CSS
Local business
Sercohen
A 24/7 plumbing company in Madrid, in business since 1991. A website built to make the phone ring: direct WhatsApp, clear services and local SEO.
- Next.js
- React
- Tailwind CSS
E-commerce
Noni Shop
An editorial showcase for a slow-fashion brand from Valle de Tobalina: minimal, elegant and made to tell the story behind every garment.
- Next.js
- React
- Tailwind CSS
Personal project / Open source
OpenRepair
An evolution of my intermediate vocational final project. A repair shop manager with customer records, repair tracking, estimates and PDF receipts. Built with Flask and MariaDB.
- Python
- Flask
- MariaDB
- Docker
- ReportLab
Educational platform
Proyecto Sostenibilidad
An educational site for Las Naves school (Salesianos): energy and emissions data turned into clear charts you understand at a glance.
- Next.js
- React
- Tailwind CSS
Tools
Personal tool / Open source
NoFollowBack
Compares who I follow on Instagram with who follows me back, using the follower and following pages saved as HTML. It extracts usernames with BeautifulSoup and writes an alphabetical Markdown report. Everything runs locally, with no login or credentials.
- Python
- BeautifulSoup4
Learning by building
From my first projects to Web Application Development. Exercises, notes and code, organised by stage.
Basic vocational training
My first computing projects.
Intermediate vocational training
Microcomputer Systems and Networks.
- Ping-Pong with PythonA team project built with Python and Pygame for Programming Fundamentals.
- Programming fundamentalsPython theory, notes and exercises from my first year of Microcomputer Systems and Networks.
- HTML and CSS exercisesPages and exercises from the second-year Web Applications module.
- Programming with PythonSecond-year Python theory, activities and revision exercises.
Advanced vocational training
Web Application Development. In progress.
- DatabasesDatabase exercises and notes from Web Application Development. First materials coming soon.
- ProgrammingProgramming module exercises and notes from Web Application Development. First materials coming soon.
- Client-side web developmentExercises and notes from the client-side web development module. First materials coming soon.
Let's build your idea
Tell me about your idea or your business and we'll build it together. The first step costs nothing.
Or email me directly
rcj95.dev@gmail.com