Android Developer

Android Full-Stack Engineer

📍 Location: Remote

💼 Type: Full-Time

💰 Salary: $800 - $1,000 USD / month

📩 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 experienced Android Full-Stack Developer 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

📌 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

📌 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

📌 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

📌 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

🎯 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

🎯 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

🎯 VoIP & Audio Experience

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

🎯 Security & API Design

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

🎯 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

🚀 Apply now and help shape the future of voice security

●      2+ Years of experience of Android native development with Java and Kotlin

●      Experience in Android Studio IDE and tools like Android Device Monitor, Logcat

●      Hands-on experience on MVVM architecture pattern

●      Solid experience/understanding of OOPS concepts and Design patterns.

●      Knowledge on cross platforms like Flutter, React Native is an added advantage

●      Thorough knowledge of Android APIs and platform capabilities (location-based capabilities within apps)

●      Experience with offline storage, threading, and performance tuning

●      Proven knowledge of Android UI design principals, patterns, and best practices

●      Experience with publishing applications on Google Play Store and app signing process

●      Expertise in payment gateway and social media integration

●      Proficient understanding of code versioning tools, such as Git

●      Familiarity with CI/CD

●      Provide technical leadership and functional help working closely with team members

●      Design, implement and maintain application within all phases of the software development life cycle (SDLC) on Microsoft Azure (or AWS)

●      Independently carry out the activities without much of guidance

●      Create, understand, and validate design and estimates and be able to justify them

●      Applies knowledge of principles and techniques to solve technical problems.

●      Works closely with other functions to understand customer needs and to develop product roadmaps.

●      Translate design and wireframes into high-quality mobile applications.

●      Strong troubleshooting and analytical skills and detail oriented

●      Comprehensive understanding of OOPS concepts, data structures, algorithms and product development techniques and theories

●      Should be able to design schema for enterprise level applications

●      Should be able to apply design patterns

●      Should be open to face new challenges and learn new technologies

●      Experience with debugging, performance profiling and optimization

Full Stack Engineer ( React Native)

Experience: 1- 5 Years

Work Location: Hyderabad

Skillset: React Native, Node JS, React, MongoDB & AWS

If you have it in you to build dynamic web architecture, APIs and databases in a stimulating, fast-paced environment, then please give us a shout out. You will be a part of an extremely passionate team at Goldstone that is researching and creating smart solutions based on next-gen cognitive technologies.

You will get a chance to work on exciting projects at our state-of-the-art office, grow along with the company and be fruitfully rewarded for your efforts!

Requirements:

• Minimum 1 years of experience in React Native.

• Integration of Rest APIs in react native.

• Firm grasp of the JavaScript and Typescript language and its nuances, including ES6+ syntax

• Knowledge of functional and object-oriented programming

• Ability to write well-documented, clean JavaScript code

• Rock solid at working with third-party dependencies and debugging dependency conflicts

• Familiarity with native build tools, like XCode, Gradle, Android studio and IntelliJ

• Proficient understanding of releasing and monitoring apps on IOS App store, Play store.

• Should be able to communicate to backend developers on API building and modifications needed.

• Testing and releasing builds Experience in application testing software’s Appium is preferable.

• Understanding of REST APIs, the document request model, and offline storage

• Experience with automated testing suites, like Jest or Mocha

• Experience with handling production mobile apps.

• Experience with performance testing and optimization.

Responsibilities:

You’ll

• We are looking for a React Native developer interested in building performant mobile apps on both the iOS and Android platforms.

• You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure.

• Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

• Build pixel-perfect, buttery smooth UIs across both mobile platforms.

• Leverage native APIs for deep integrations with both platforms.

• Diagnose and fix bugs and performance bottlenecks for performance that feels native.

• Reach out to the open-source community to encourage and help implement mission-critical software fixes—React Native moves fast and often breaks things.

• Maintain code and write automated tests to ensure the product is of the highest quality.

• Transition existing React web apps to React Native.

What do we do?

About MobileFirst: Mobile design & development studio focusing on great mobile app experiences. We have great exposure working with Startups, Enterprises and Design Studios. MobileFirst has worked with customers from the USA, India, UK, Kenya, and Israel.

We have catered to clients in Automobiles, Paints, Fashion, Sports, Transportation, Food, Music, Coupons, Smart Parking, Uber for X, etc.

What are we looking for?

• Android Developer with passion working on Android & Android NDK related challenges
• Exposure on Android Application development and deployment 
• Minimum 2+ years experience is required on Android 
• Must have uploaded 3 to 4 Android Applications
• Great command over Android Studio (Gradle-based development) 
• Understanding of Android UI and new UI/ UX trends
• Understanding of Play Store, FCM is required
• Exposure to Kotlin is a plus.

What should you have?

• Amazing debugging skills and problem-solving abilities
• Skills of designing and developing advanced applications for the Android platform
• Bug fixing and improving application performance
• Knowledge of Opensource Libraries & Frameworks  
• Command over algorithms, design trends & knowledge about popular applications on App 
• Continuously discover, evaluate, and implement new technologies to maximize development efficiency
• Solid understanding of the full mobile development life cycle.

Who are we looking for?

• Tech Savvy. Fast learner. Leader. 
• Creative self-starter who is comfortable with both taking initiatives and working in collaboration.
• We don't see your college degree or we don't care if you are a dropout. 

Job Perks

• Great Fun Learning exposure
• Training and Seminars on new Technologies
• Startup Experience
• Flexible timings and "work from home" options
• Assignment Incentives
• Training on Vocabulary, Soft Skills, and Personality development
• Team Lunches, Team Outings, Hangouts, and Movies