Bank apps and systems used by hundreds of thousands of people.
I led a team of 5 to 8 developers and built tools that save them time.
Technology: React Native, Expo, AWS, Go
I am Roger, a full-stack developer focused on applied AI. For more than nine years I have turned business needs into web and mobile apps and systems, and AI assistants and agents, that work and can be maintained.
Teams and companies that have trusted my work
Platforms, dashboards and internal systems built for you so your team works better, and easy to maintain over time.
Apps for iPhone and Android, built once for both.
I review your system and your team, find what holds your growth back and propose how to organize it. Then I help you carry it out.
Assistants that answer your customers and agents that carry out tasks for you, built for you and connected to your business information and systems.
I also design, program and publish games with my own studio, Kipu Games.
Results, without jargon.
I led a team of 5 to 8 developers and built tools that save them time.
Technology: React Native, Expo, AWS, Go
I changed how the page is built so Google reads it better and it loads faster.
Technology: Angular, SEO
I brought orders, spare parts, machines, tasks and staff into a web and mobile app with clear reports.
Technology: Angular, PWA, React Native
I split the system into independent pieces so one can improve without affecting the rest.
Technology: Angular 15, 16 and 18, Microfrontends, Node
I connected custom assistants and agents to the company's information and systems, so they answer and also carry out tasks.
Technology: GPT API, AI agents, Python, Node, MongoDB
I lead your project from start to finish. When the project calls for it, I assemble a team of trusted professionals to fit, so nothing depends on a single person.
We talk about your business and what you need to achieve, not just what to build.
Clear scope, technology and timeline before writing code.
You see real progress often and we adjust together.
Maintainable, documented code, so the product keeps growing.
Much of my work is private. In my portfolio I tell where I worked and what I built.
View portfolioBesides working for others, I build and publish my own products, including games with my studio, Kipu Games.
Mac appKODEMONA pet that lives in your Mac's notch.Web toolCertForgePractice questions to prepare for certification exams.
Playable on CrazyGamesEKO: Elemental Knock OutElemental fighting game I developed between 2025 and 2026. You can play it now.
In development since 2023MOH: Age of ChampionsMagic combat with 64 champions. I have been building it since 2023.Tell me what you need to achieve and I will explain how I would approach it. If the project needs it, I assemble the trusted team it takes.
Tell me about your projectFull-stack with a focus on Angular and React. I have led frontend teams and mentored interns.