Cordova | Sr. 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

Experience: 3-5 Years 1 candidate & 1-3 Years 2 candidate

Skills:      

Core JAVA(Native), Core Kotlin, Sqlite, MySQL, XML

iOS Developer responsibilities include:

• Design and build applications for the iOS platform
• Ensure the performance, quality, and responsiveness of applications
• Collaborate with a team to define, design, and ship new features
•  Identify and correct bottlenecks and fix bugs
• Help maintain code quality, organization, and automatization
• Experience with iOS frameworks such as Swift UI, Objective C,
•  UIKit, AVFoundation, Core Bluetooth, Combine, PushNotifications.
•  Experience with Databases - Core Data, Realm  
•  Familiarity with RESTful APIs to connect iOS applications to back-end services
•  Knowledge of Architecture - MVC and MVVM
•  Understanding of Apple’s design principles and interface guidelines
•  Excellent communication Skills and Client interaction.

Vidyakul is looking for a Senior Android Developer to take our product to the next level for Pan India State Board students (A 60mn user opportunity!). We are willing to offer the right pay, and more importantly the right ESOPs for the right candidate! 

* Knowledge of Android SDK, different versions of Android
* Familiarity with RESTful APIs to connect mobile applications to back-end services

* Should have hands-on knowledge of Kotlin
* Should have the understanding of working on Firebase & Firebase real-time database
* Experience with third-party libraries like Retrofit2 and APIs
* Experience with offline storage, threading, and performance tuning

Hood is a new-age anonymous social network.

Hood has recently raised $3.2Mn seed funding and is backed by top VCs, 16+ unicorn founders including Vijay Shekhar Sharma - PayTM CEO, Ritesh Agarwal- OYO CEO, Kunal Shah - Cred CEO and outstanding management team.

• 2+ years of work experience in consumer-facing high traffic (millions of concurrent users) mobile applications with a desire to work in growing fast-paced startups.
• Worked on applications from scratch. Well-versed with building apps for various screen densities and sizes.
• Up to date on upcoming trends in android and its ecosystem with respect to design, architecture, etc.
• Experience in optimizing all important parameters like network utilization, application size, and battery.
• Experience with kotlin, coroutines, dagger, retrofit, Rx-android, and android architecture components, etc.
• Should have used mock frameworks, modular code design, and popular design patterns.

• Good grasp of algorithms, design patterns, memory management, and multithreaded programming.
• Experience with SAAS platforms for mobile development like Analytics, Push Notifications, Cloud Storage, Ad Networks, etc.
• Hands-on experience with Android's debugging, unit-testing, memory, and performance optimization tools.
• Experienced in databases like SQLite, ROOM DB.
• Experience in using Device hardware integrations like GPS, Camera, etc.
• Experience with performance and memory tuning with tools.
• Knowledge of engineering practices like CI-CD.
• Strong communication and team collaboration skills.
• Experience in iterative development methodologies like Agile.

Company Introduction

Edfone is an educational technology company, which creates smart tools for schools and colleges. This position is for a global project where your work will create an impact on students across the globe. Being one of the early in-house team members you will get to enjoy interacting with founding team and working with early customers - students and teachers. And as always, you will be eligible for a fair share of startup benefits. If you are someone who loves to write mouth watering code and is game to for an exciting ride to help students across the world learn better, do see if you have the skills we need and apply.

Job Description

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.

Responsibilities

• 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
• Maintain code and write automated tests to ensure the product is of the highest quality.
• Transition ownership of existing React Native apps from out sourced developers to in-house

Skills

• Firm grasp of the JavaScript, React Native and its nuances
• Knowledge of functional or 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
• Understanding of REST APIs, the document request model, and offline storage
• Experience with automated testing suites, like Jest or Mocha

MyScoot is a Y Combinator and VC funded start-up that helps you discover new people at home-hosted social events.

We are looking for an experienced 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.

• Minimum 3 years of experience in a high-quality engineering team at a product startup or MNC
• Bachelor’s degree in computer science, computer engineering or related technical field from a top-tier college
• Proficiency in CS concepts such as data structures and algorithms
• Experience in implementing readable, object oriented code and design patterns
• Understanding of build, deployment, A/B testing of products
• Familiarity with native build tools, like XCode, Gradle, Android Studio, IntelliJ
• Understanding of REST APIs, the document request model, and offline storage
• 1+ years of experience working as a React Native Mobile Developer