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English
$
USD
Rafael Marcos
@rafaelmarcos19
Android Developer kotlin
Angola
English, Portuguese
About me
Backend Developer (Java/Kotlin) — I build systems end-to-end: from database design to a working, deployed API with Spring Boot. I can also connect it to a frontend or mobile app for one finished product.
What I offer:
• REST API development (Spring Boot)
• Database design & queries (PostgreSQL/MySQL)
• Bug fixes in Java/Kotlin/Android apps
• Basic frontend integration (HTML/CSS/Tailwind)
Early in my freelance journey — sharp pricing, full focus on your project, clear communication. Message me your scope for a quick estimate.
Skills
Rafael Marcos
Offline •
See my services
Mobile App Customization
I will fix android app bugs in 24 hours
Android App Development
I will build your android app mvp kotlin, jetpack compose
Portfolio
Work experience
Software Engineer
QNB ANGOLA • Part-time
Feb 2026 - Present • 8 mos
Software Developer with hands-on experience in website maintenance, incident resolution, and live production systems. I build and maintain web applications in PHP (cPanel), troubleshoot and fix issues fast, and write clean, maintainable code. Available for backend and web maintenance work, fully remote — reliable communication, clear updates, on-time delivery.
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Fiverr
Freelance • 3 yrs 9 mos
Android Developer
Jan 2024 - Present • 2 yrs 9 mos
I develop and support Android applications with kotlin, implementing modern interfaces with Jetpack Compose, fixing bugs, optimizing and implementing new features.
Java Developer
Dec 2022 - Dec 2023 • 1 yr
I developed desktop applications and modified existing projects in Java, following the best practices of software architecture.
4 Reviews
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Rating Breakdown
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- Quality of delivery
- Value of delivery
1-4 out of 4 Reviews
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deodejobs
Spain
Rafael is a great professional . He recieve the works with dillegence and deep understanding of your proposes. He communicate during the process his doubts and try to understand you. Obviously we will work with him for more projetcs. Highly recommendable. Very good person.
Helpful?
lucas_antoni
Brazil
Ongoing collaboration
He's a skilled programmer who offered great support and communication through the entire project, 10/10!
$50
Price
6 days
Duration
Helpful?
nandoalm
Portugal
Ongoing collaboration
2nd job (a follow-up), with a very short schedule, and again he delivered flawlessly. Will come back for sure!
$50
Price
Helpful?
nandoalm
Portugal
Ongoing collaboration
Performed the job exactly as requested. I will request his services again in the near future for sure.
$50
Price
Helpful?
