freiberufler Senior Android Developer auf freelance.de

Senior Android Developer

zuletzt online vor wenigen Tagen
  • auf Anfrage
  • 13587 Berlin
  • Europa
  • ta  |  en
  • 08.10.2026
  • Contract ready

Kurzvorstellung

OVERVIEW

•Senior Android Developer with 8+ years of experience building production-grade Android applications in Kotlin.

Most recently at ubiMaster GmbH (Berlin) — owned the full Android app for a 1:1 EdTech tutoring platform.

Geschäftsdaten

 Gewerbetreibend
 Steuernummer bekannt
 Berufshaftpflichtversicherung aktiv

Qualifikationen

  • Android
  • Android Developer
  • Android Entwicklung
  • Computer Engineering9 J.
  • Senior Android Developer

Projekt‐ & Berufserfahrung

Senior Android Developer- Freelancer
Kadhir Network Pvt Ltd, Berlin
3/2026 – offen (8 Monate)
IT & Entwicklung
Tätigkeitszeitraum

3/2026 – offen

Tätigkeitsbeschreibung

Engaged as a freelance Android developer to modernize and extend the Blacksheep Value OTT app—an independent Tamil-language streaming platform.
• Rebuilding app architecture using Kotlin, Jetpack Compose, MVVM, Koin, Coroutines, and Flow—replacing legacy implementation with a scalable, maintainable codebase
• Implemented OTP-based phone number authentication—login and registration flows built from scratch
• Integrated MX Player SDK for live and on-demand video streaming
• Set up Firebase integration and CI/CD pipeline; write unit tests across core features
• Working in a 2-person Android team; new version in active development ahead of scheduled release

Eingesetzte Qualifikationen

Streaming

Senior Android Developer (Festanstellung)
ubiMaster GmbH, Berlin
12/2022 – 11/2025 (3 Jahre)
IT & Entwicklung
Tätigkeitszeitraum

12/2022 – 11/2025

Tätigkeitsbeschreibung

Built and maintained a 1:1 live tutoring platform
for two product flavors (ubiMaster + FinanzGenie).

Key contributions:
→ Implemented live video/audio sessions using
Agora SDK — core revenue feature
→ Built real-time chat using WebSocket with
structured coroutine lifecycle handling
→ Designed and implemented Clean Architecture
across 32+ ViewModels with Jetpack Compose UI
→ Set up CI/CD pipeline with Fastlane +
Firebase App Distribution + GitHub Actions
→ Reduced crash rate monitored via
Firebase Crashlytics
→ Multi-flavor build setup for two
separate product lines
Tech: Kotlin, Jetpack Compose, MVVM, Hilt,
Room, Retrofit, Agora SDK, WebSocket,
Fastlane, Firebase

Eingesetzte Qualifikationen

Computer Engineering

Android Developer (Festanstellung)
Juwelo TV GmbH, Berlin
2/2021 – 11/2022 (1 Jahr, 10 Monate)
IT & Entwicklung
Tätigkeitszeitraum

2/2021 – 11/2022

Tätigkeitsbeschreibung

built a live TV shopping Android app with
real-time video streaming.

Key contributions:
→ Live TV playback with multi-resolution
support using ExoPlayer
→ Backend API integrations and regular
Play Store releases
→ Reusable Compose component library
reducing feature delivery time
Tech: Kotlin, MVVM, ExoPlayer, Retrofit,
Firebase

Eingesetzte Qualifikationen

Computer Engineering

Android Developer (Festanstellung)
Payper Creative, Coimbatore, TN , India
7/2019 – 12/2020 (1 Jahr, 6 Monate)
IT & Entwicklung
Tätigkeitszeitraum

7/2019 – 12/2020

Tätigkeitsbeschreibung

Delivered multiple client Android projects.

Key contributions:
→ Backend API integration with Kotlin + MVVM
→ Firebase Analytics for post-launch monitoring
→ Reusable abstract modules reducing
implementation overhead
Tech: Kotlin, MVVM, Retrofit, Firebase

Eingesetzte Qualifikationen

Computer Engineering

Android Developer (Festanstellung)
Innobot Systems, Coimbatore, TN , India
5/2017 – 4/2019 (2 Jahre)
IT & Entwicklung
Tätigkeitszeitraum

5/2017 – 4/2019

Tätigkeitsbeschreibung

Built custom video player with live streaming.

Key contributions:
→ ExoPlayer-based player with Camera2 API
→ Video recording + AWS S3 upload/playback
→ Firebase Crashlytics integration
Tech: Kotlin, Java, ExoPlayer, Camera2, AWS S3

Eingesetzte Qualifikationen

Computer Engineering

Android Developer (Festanstellung)
Next Techno Enterprises, Coimbatore, TN , India
5/2016 – 12/2016 (8 Monate)
IT & Entwicklung
Tätigkeitszeitraum

5/2016 – 12/2016

Tätigkeitsbeschreibung

Built fingerprint registration and
enrollment application.

Key contributions:
→ Hardware Fingerprint SDK integration
→ Report generation from ticket data
→ Printing SDK integration
Tech: Java, Android SDK, Hardware SDKs

Eingesetzte Qualifikationen

Computer Engineering

Ausbildung

Bachelor of computer science Engineering
Computer science
SRIT
2014
Coimbatore, TN , India

Über mich

Senior Android Engineer with 8+ years of experience
building production-grade Android applications for
German companies in the EdTech and e-commerce sectors.

I specialize in:
→ Kotlin & Jetpack Compose (modern UI)
→ Clean Architecture (MVVM/MVI)
→ Real-time features (WebSockets, live video)
→ Offline-first apps (Room + Retrofit)
→ CI/CD pipelines (Fastlane + Firebase)

I have delivered end-to-end Android projects—
from architecture design through the Play Store
deployment—including apps with live video
calls (Agora SDK), real-time chat (WebSocket),
and multi-flavor product setups.

I work independently, communicate clearly,
and deliver clean, tested, well-documented code.

Available immediately for remote and on-site
projects across Germany.

Languages: English (fluent), German (basic),

Weitere Kenntnisse

Architecture & Patterns:
Clean Architecture, MVVM, MVI, Repository Pattern,
Dependency Injection (Hilt, Koin), SOLID Principles

Real-time & Media:
WebSocket, Agora SDK (live video/audio),
ExoPlayer (video streaming), Camera2 API

Backend Integration:
Retrofit, REST APIs, GraphQL basics,
Firebase (Crashlytics, Analytics, FCM,
Remote Config), AWS S3

Local Storage:
Room Database, DataStore, SharedPreferences

Testing:
JUnit5, Mockito, Espresso, Turbine (flow testing),
UI Testing with Compose

CI/CD & DevOps:
Fastlane, GitHub Actions, Firebase App Distribution,
Play Store deployment, ProGuard

AI & Productivity:
AI-assisted development (Claude, GitHub Copilot),
Prompt engineering for code generation and review

Version Control:
Git, GitHub, GitLab, branching strategies

Methodologies:
Agile, Scrum, Kanban, and code review practices

Additional:
Kotlin Multiplatform (KMP) basics,
Multi-flavor app builds,
Play Store optimization (ASO basics)

Persönliche Daten

Sprache
  • Tamil (Muttersprache)
  • Englisch (Fließend)
Reisebereitschaft
Europa
Arbeitserlaubnis
  • Europäische Union
  • Schweiz
Profilaufrufe
44
Alter
34
Berufserfahrung
10 Monate (seit 12/2025)

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