I will develop esim app, linphone app, voip softphone app with sip calling, travel esim

T
travisreign
T
travisreign
Travis
develop esim app, linphone app, voip softphone app with sip calling, travel esim
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develop esim app, linphone app, voip softphone app with sip calling, travel esim
Full Screen
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develop esim app, linphone app, voip softphone app with sip calling, travel esimdevelop esim app, linphone app, voip softphone app with sip calling, travel esimdevelop esim app, linphone app, voip softphone app with sip calling, travel esim

About this gig

What if your users could activate an eSIM, make crystal-clear VoIP calls, send messages, and stay connected worldwideall from a single app?


That's exactly what I help businesses build.

I specialize in developing feature-rich eSIM apps, Linphone apps, VoIP softphone solutions, SIP calling platforms, and travel eSIM applications for startups, telecom providers, MVNOs, and businesses looking to scale

  •  eSIM Activation & Management
  • Linphone Customization
  • VoIP Softphone Development
  • SIP Calling & SIP Trunk Integration
  • Travel eSIM Solutions
  • HD Voice & Video Calling
  • Twilio & WebRTC Integration
  • Android & iOS Development
  • SMS & Chat Features
  • Secure User Authentication
  • Payment Gateway Integration
  • Admin Dashboard & Analytics
  • API Integration
  • Call History & Contact Management
  • Push Notifications

Whether you need an MVP, a white-label telecom platform, a travel eSIM marketplace, or a fully customized VoIP application, I can help bring your vision to life.


 Contact me today to discuss your project requirements and get a perect solution that fits your business goals.

  • App type

    • Hybrid

  • Programming language

    • Java
    • JavaScript
    • Kotlin
    • Objective-C
    • PHP
    • Python
    • Swift
    • TypeScript
    • React Native
    • Flutter

  • Frameworks

    • NativeScript
    • Laravel
    • Kodular
    • SwiftUI
    • Jetpack Compose Multiplatform
    • Cordova
    • React Native

  • Purpose

    • Chat
    • Delivery
    • Streaming
    • Booking
    • Social networking
    • Entertainment
    • Education
    • Lifestyle
    • Travel
    • Productivity tools

  • Tools

    • Power apps
    • AppSheet
    • Android Studio
    • Xcode
    • Firebase
    • BuildFire
    • Visual Studio Code

  • Expertise

    • Cross browser/Device compatibility
    • Localization
    • Performance
    • Security
    • Design
    • API integration

Get to know Travis

Travis

Expert App Developer, Mobile and Software Engineer

  • FromGermany
  • Member sinceJun 2026
  • Avg. response time3 hours

  • Languages

    English, German, Spanish
I'm an App Developer and Software Engineer with expertise in designing, developing, testing, and deploying high quality applications within set deadlines. My focus is mobile application development, with additional experience in web application development. Over time, I have developed strong skills in understanding technical requirements, quickly adapting to large and existing codebases, and contributing effectively with minimal onboarding time. I am passionate about building reliable apps that solve real world problems and deliver great user experiences. Contact me to get started today.

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