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Android Full-Stack Developer
Android Full-Stack Developer
Momenta's logo

Android Full-Stack Developer

Rei Tsunemi's profile picture
Posted by Rei Tsunemi
2 - 16 yrs
₹8L - ₹10L / yr
Remote only
Skills
skill iconKotlin
skill iconJava
skill iconAndroid Development
Voice Over IP (VoIP)
AWS Lambda
RESTful APIs
Web Realtime Communication (WebRTC)

Android Full-Stack Engineer

šŸ“ Location: Remote

šŸ’¼ Type: Full-Time

šŸ’° Salary: $800 - $1,000 USD / month

šŸ“© Apply Now at: https://forms.gle/1XrseYnbCUsJDDuTA


About Us

At Momenta, we're committed to creating a safer digital world by protecting individuals and businesses from voice-based fraud and scams. Through innovative AI technology and community collaboration, we're building a future where communication is secure and trustworthy.


Position Overview

We’re looking for an experiencedĀ Android Full-Stack DeveloperĀ to help us bring our user-facing Android app to life. You’ll work closely with our design and engineering teams to build out our map-based UI and integrate key features that power voice scam detection and reporting.


Key Expectations

šŸ“Œ End-to-End Android Client

  • Take our existing codebase from prototype to production-grade
  • Implement core features: secure login flows, background call listeners (VoIP/SIP), real-time UI feedback on fraud scores, and call history dashboards
  • Optimize across devices for CPU, memory, battery, and low-latency audio processing
  • Handle permissions, call audio capture, and background service behavior
  • Launch and manage app distribution via Google Play

šŸ“Œ Serverless Backend & API Development

  • Design, build, and maintain AWS-based microservices using Lambda, API Gateway, DynamoDB, and S3
  • Implement endpoints for audio streaming, ML model inference (via AWS SageMaker or custom endpoints), and event logging
  • Define REST/WebSocket contracts and integrate with Twilio or SIP gateways for VoIP call control

šŸ“Œ Performance, Security, and DevOps

  • Ensure real-time responsiveness and scalable audio data processing
  • Implement robust CI/CD pipelines using Git and Gradle
  • Build secure auth flows using OAuth/token-based authentication
  • Apply best practices in encryption, permissions, and Android security architecture

šŸ“Œ Cross-Team Collaboration

  • Work closely with our CTO and product team to align implementation with roadmap
  • Provide clear technical insights, raise blockers, and proactively recommend solutions
  • Document backend services and client workflows for maintainability


Required Skills & Qualifications

šŸŽÆ Android Expertise

  • Kotlin & Java, Android Studio, Jetpack libraries (WorkManager, Room, LiveData)
  • Material Design, custom views, background services, and VoIP call handling
  • Experience launching Android apps on Google Play

šŸŽÆ Backend & DevOps Proficiency

  • AWS Lambda, API Gateway, DynamoDB, S3
  • Node.js, Python, or similar backend experience
  • REST and WebSocket API development
  • CI/CD pipelines, Git, Gradle, Serverless Framework

šŸŽÆ VoIP & Audio Experience

  • Familiarity with SIP/WebRTC, call audio capture, Twilio integrations
  • Experience with background audio services and event-driven processing

šŸŽÆ Security & API Design

  • OAuth/token-based auth
  • Secure mobile data handling and encryption in transit
  • Android permission model and security best practices

šŸŽÆ Bonus

  • Experience with AWS SageMaker or deploying custom ML endpoints
  • Prior experience with real-time event processing or analytics in telecom or fraud detection


Why Join Momenta?

Work on a real product with a clear mission—protecting users from voice scamsShip a full-stack mobile experience that will be used globallyCollaborate directly with founders and see your work go liveRemote-first, builder-led team with deep focus on product delivery

šŸš€ Apply now and help shape the future of voice security

Read more
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Shubham Vishwakarma

Full Stack Developer - Averlon
I had an amazing experience. It was a delight getting interviewed via Cutshort. The entire end to end process was amazing. I would like to mention Reshika, she was just amazing wrt guiding me through the process. Thank you team.
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About Momenta

Founded :
2024
Type :
Product
Size :
0-20
Stage :
Bootstrapped

About

At Momenta, we're committed to creating a safer digital world by protecting individuals and businesses from voice-based fraud and scams. Through innovative AI technology and community collaboration, we're building a future where communication is secure and trustworthy.

Read more

Candid answers by the company

What does the company do?
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At Momenta, we're committed to creating a safer digital world by protecting individuals and businesses from voice-based fraud and scams. Through innovative AI technology and community collaboration, we're building a future where communication is secure and trustworthy.

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Exp in Retrofit :

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Shubham Vishwakarma

Full Stack Developer - Averlon
I had an amazing experience. It was a delight getting interviewed via Cutshort. The entire end to end process was amazing. I would like to mention Reshika, she was just amazing wrt guiding me through the process. Thank you team.
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