Information Systems Engineer from UPC. He designs and builds web and mobile products end to end, with special care for the user experience.
Engineers committed to software done right.
We help companies turn their ideas into digital products people enjoy using.
C&J comes from the initials of its founders, Carlos and Juan Carlos. We bring design, development and data together in one small, close-knit team, where every project gets the attention of a partner, not a vendor.
Who we are
How we work
- 01
Discover
We learn your business, users and goals. We define a clear scope and budget.
- 02
Design
Flows, wireframes and high-fidelity UI. You approve every screen.
- 03
Validate
Clickable prototypes tested with real users before any code.
- 04
Build
Development in 2-week sprints with a demo at every delivery.
- 05
Evolve
We launch, measure and keep improving the experience.
Technologies we build with
We choose the tool for the problem, not the trend.
- AWS
- Google Cloud
- Microsoft Azure
- Next.js
- React Native
- Flutter
- Python
- Node.js
- PostgreSQL
- Kubernetes
- Terraform
- OpenAI
- Anthropic
Design with method
We research, prototype and validate with real users before coding. Good design isn't luck — it's process.
A committed team
We are small on purpose. You will always talk to the people who design and build your product, from the first meeting to launch.