I help companies ship developer work with a clear scope: JavaScript/TypeScript apps (Angular & Next.js), Android (Kotlin/Compose), and Java/Spring Boot APIs — plus easy Google Sign-In and Apple Sign-In when the product needs auth.
What I deliver
- Web apps, admin panels, and landings (JavaScript, TypeScript, Angular, Next.js/React, Tailwind)
- Google Sign-In + Apple Sign-In (OAuth / Firebase Auth / Auth.js) so users log in in a couple of taps — web and/or mobile
- Android features (Kotlin, Jetpack Compose, Firebase / Play-oriented work)
- Java 17 + Spring Boot APIs, CRUD backends, and integrations (Stripe, email, REST)
- Bug fixes and scoped features in existing repos — short written plan before coding
How I work
- Developer-only scope: observable deliverables, acceptance criteria, and a demo
- Per-company auth checklist (Google Cloud / Apple Developer setup notes)
- Progress updates — not surprise rewrites or endless revisions
Stack
JavaScript · TypeScript · Angular · Next.js/React · Node
Google Sign-In · Apple Sign-In · Firebase Auth / Auth.js / Supabase Auth
Java · Spring Boot · Android/Kotlin/Compose · Firebase
Tailwind · Stripe · PostgreSQL
Proof
- Interactive web demo: https://cosmos-simulation.vercel.app
- GitHub: https://github.com/reeb-dev
Send the brief (or repo link + goal). I’ll reply with a short plan, fixed-price estimate, and whether Google/Apple login belongs in v1.
Develops native Android applications and web interfaces for custom client projects. Builds and consumes Java Spring Boot backend services, including REST APIs and microservices. Participates in code reviews, architecture decisions, and agile Scrum teamwork.
Developed native Android apps using Java and Kotlin with Material Design and MVVM/MVP patterns. Built Angular web applications integrated with backend services. Implemented REST APIs and microservices in Java Spring Boot with JWT authentication and wrote unit and integration tests. Participated in Docker-based deployments and agile team activities.
Developed business systems using Angular, Ionic, Laravel, Node.js, and native Android technologies. Implemented REST APIs and frontend interfaces, built Android applications and Flutter prototypes, and applied MVVM and MVP architecture patterns.
Tecnicatura Superior en Programación, Programming
Currently pursuing a higher technical degree in programming.
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