
- 2+ years of relevant experience in Android Development.
- Should be strong in Android fundamentals (including UI design), OOP & Java fundamentals.
- Should be strong in Kotlin fundamentals and coroutines.
- Familiar with Android Architectures, Multithreading Concepts, Testing framework like JUnit, Espresso, Mockito and Reactive Programming.
- Familiar with Dependency Injection and memory optimization techniques.
- Practitioner of SOLID principles.
- Working experience in Compose and KMM (Kotlin Multiplatform Mobile) is an addon
- Should have been part of a team which has shipped at-least one App and lived through the process without too many scars
- Stellar problem solving skills
- Hunger to learn new things and ability to grasp new concepts quickly
- Ability to move quickly without breaking things too much (we are dreamers)
- Passion for developing awesome user experiences
- Ability to work under pressure which is balanced by a sense of responsibility and ownership.

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- 3+ years of experience with Cordova
- 4+ years of experience with Android and iOS Development.
- Experience in Cordova Plugins using Native SDKs/APIs
- Implementation of WebRTC in atleast one Cordova Project
- Fluent communication Written and Verbal in English
Flutter Mobile App Developer
Experience Level: 1+ Years
Job Description:
We are seeking a talented Flutter Mobile App Developer with 1+ years of experience in Android mobile app development. If you are passionate about Flutter and possess the skills and knowledge outlined below, we encourage you to apply and be part of our innovative team.
Responsibilities:
- Develop and maintain mobile applications using Flutter.
- Showcase proficiency in Flutter development.
- Implement the MVVM architectural pattern to ensure clean and scalable code.
- Work with API and local data to deliver robust app functionality.
- Stay updated on all the latest Flutter widgets and their usage.
- Apply BLOC design patterns for efficient state management.
- Understand the Flutter app lifecycle and its intricacies.
- Familiarity with cloud messaging APIs and push notifications for both Android and iOS.
- Have experience in successfully submitting Android apps to the Google Play Store.
- Have experience in iOS app submission in the Apple App Store.
- Ensure the performance, quality, and responsiveness of mobile applications.

- Expert-level knowledge of developing Android based applications.
- Deep understanding of the internals of Android Frameworks.
- Good knowledge of OOPS concepts and JAVA.
- Familiarity with RESTful APIs to connect Android applications to back-end services.
- Experienced in building mobile applications that utilize web services.
- Experience with third-party libraries and APIs.
- Good knowledge of SQLlite database.
- Strong knowledge of Android UI design principles, patterns, and best practices
- Proficient understanding of code versioning tools, such as Git.


● Would work on our Flutter codebase writing cross platform code for both
Android and iOS.
● 🎨 Work closely with product and design to create amazing user experiences.
● 🐜 Watch out and fix production issues, and target on running a smooth
experience.
● 📈 With the help of the rest of the team, you maintain a great app with few bugs
and trustable analytics: KPIs, logs, crash logs, boards.
Above all, you would be the owner of the app side of things. Drive it to success. That
will be the goal.
We are tech/language agnostic when it comes to developers, so the only hard
requirement is to be smart and passionate. That being said, having the skills below will
be an advantage:
● Experience working with Flutter and/or Dart
● Experience with React/React Native (makes it easier to pick up flutter)
● Experience with Native app development (sooner or later you might get to a point
where you need to write native modules as well)


iOS Developer Responsibilities:
- Designing and building mobile applications for Apple’s iOS platform.
- Collaborating with the design team to define app features.
- Ensuring quality and performance of the application to specifications.
- Identifying potential problems and resolving application bottlenecks.
- Fixing application bugs before the final release.
- Publishing application on App Store.
- Maintaining the code and atomization of the application.
- Designing and implementing application updates.
iOS Developer Requirements:
- Bachelor’s degree in computer science or software engineering.
- Proven experience as an app developer.
- Proficient in Objective-C, Swift, and Cocoa Touch.
- Extensive experience with iOS Frameworks such as Core Data and Core Animation.
- Knowledge of iOS back-end services.
- Knowledge of Apple’s design principles and application interface guidelines.
- Proficient in code versioning tools including Mercurial, Git, and SVN.
- Knowledge of C-based libraries.
- Familiarity with push notifications, APIs, and cloud messaging.
- Experience with continuous integration.


What we are building?
Businesses need to manage a lot of user infrastructure like authentication, identity verification, user management, security and fraud prevention. Developing these solutions in-house can increase the go to market time, deviation from solving key problem, security lapses and frictional user journeys and lead to business losses. To cater these requirements of an expanding business we provide an one stop solution.
Our mission is to remove technical barriers for the companies when it comes to user infrastructure and create seamless structure for integration with our platform that handles security and provides simple and secure access to digital assets.
Sign3 is looking for an Android Developer.
What you will do?
- Own Android SDKs, working hand-in-hand with the founding team
- Design and build delightful user interfaces for native apps on Android
- You will be (co-) responsible for our software development kit (SDK) for Android
- Building mobile apps in both Swift and Kotlin.
- You work independently on your own code, but you also spend time collaborating with others.
- You are involved in all stages of app development and contribute to the roadmap.
- You get the freedom to experiment with new Android technology.
- Ownership — advocate for projects and solutions that need to be launched ground up.
Experience
- Min 2 to 4 years in developing Android applications in Java / Kotlin / C++ /
- Gradle/Groovy.
- Worked on SDKs/Frameworks.
- Strong understanding of software design patterns as well as Android specifics.
- Experience with authenticated sessions using authentication tokens and have at-least
- fundamental knowledge of app security.
- Good to have:-
- Experience with Cross-platform frameworks is a plus (React Native, Flutter, Cordova,
- Xamarin).
- Have implemented security standards and guides.
- Experience building applications at scale.
- Experience with third-party libraries and APIs like Mobile Vision, MLKit and/or
- Camera API.
- Good understanding of garbage collection, design patterns and continuously
- discover, evaluate, and implement new technologies to maximise development
- efficiency.
- Unit-test code for robustness, including edge cases, usability, and general
- reliability

Office Location: Goregaon Mumbai
Position description:
2+ years of development experience with mobile application development for Android.
Primary Responsibilities:
- Work closely with the core team for coming up with new features and implementing them
- Work on new products and services
- Provide support to existing applications
- Integrate REST services into mobile applications
Required Skills:
Mandatory: Passionate about sports, Problem solving, Team player, Target & Result oriented.
Functional Skills: Kotlin, Retrofit, Room Db, GSON, (Room/SQLite), MVVM, MVP, MVC, Work Manager, Rx java, Dagger 2, Recyclerview, Custom Solutions & Custom Views, GIT & JIRA.




- Implementing designs and coordinating the frontend development and required backend for it.
- Working on back-end development tasks and designing architecture for the same.
- Performing research and find opportunities to utilise web development best practices, forming guidelines to improve system productivity, and working on scaling and monitoring.
- Working with cross-functional teams to maintain and make sure the product should be scalable, maintainable and secure.
- Coordinating with multiple junior team members for the development of the tasks & projects
- Developing user interface components and implementing them following well-known React.js workflow.
- Architecting the application out in clean MVC kind of architectures in ReactNative for Android/ iOS app development.
- Developing APIs with MVC frameworks in Java / Python.
- Designing and building REST APIs.
- Building on and maintaining services on cloud platforms.
- Building reusable code and libraries for future use.
What you need to have:
- Bachelor's degree in Computer Science or related field.
- 1+ years of experience working as Android or React Native development
- Built an application from scratch earlier.
- Strong computer science fundamentals.
- The ability to own end to end responsibility - right from requirement to release.
- Willingness and enthusiasm drive to learn new technologies.
- The ability to pick the right tools for the job.
- Desire and ability to play different roles as necessary
- If Android, you should have strong understanding of activity lifecycle, other components like service, broadcast receiver.
- Core knowledge in Rxjava, Rxandroid, retrofit etc. and can work with Kotlin programming language.
- If React Native, should be well versed with React JS and React Native.


Responsibilities:
1. Perform R&D in computer graphics and video contents editing. Help to develop new video editing/processing algorithms for our video and live streaming pipeline. Follow up state-of-art work in related fields and keep improving overall performance of our products.
2. Research and optimize algorithms/strategies of short video and streamed video coding.
3. Research and develop practical image enhancing algorithms. Follow up state-of-art work in related fields and keep improving overall performance of our video systems.

