
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

About SIGN3 Technology
About
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Qualifications:
• 10+ years native mobile development (iOS Swift + Android Kotlin)
• Proven experience building mission-critical, offline-first applications
• Deep understanding of mobile architecture patterns (MVVM, Clean Architecture)
• Expert-level API integration and data synchronization strategies
• Experience with emergency services, healthcare, or field operations software (preferred)
• Strong debugging, performance optimization, and memory management skills
• Demonstrated leadership in establishing mobile development best practices
TECHNICAL EXPERTISE:
• iOS: Swift 5.x, SwiftUI/UIKit, CoreData, CoreLocation, Background Tasks
• Android: Kotlin, Jetpack Compose, Room, WorkManager, Location Services
• Tools: Xcode, Android Studio, Git, Figma, Firebase, TestFlight/Play Console
• CI/CD: Fastlane, GitHub Actions, or similar automation tools
• APIs: RESTful services, JSON parsing, authentication/authorization
• Testing: XCTest, Espresso, automated UI testing frameworks
Responsibilities:
CORE RESPONSIBILITIES:
• Architect mobile applications for First Due's emergency response platform serving Fire and
EMS agencies nationwide
• Lead mobile development initiatives for the Hyderabad development center
• Design offline-first architectures ensuring reliability in low-connectivity emergency
scenarios
• Collaborate with cross-functional teams across US and India time zones
• Establish mobile CI/CD pipelines, coding standards, and quality assurance processes
• Mentor developers on mobile best practices and First Due's technology stack
• Drive sprint planning, velocity tracking, and technical roadmap for mobile development
• Ensure HIPAA compliance and data security for patient care reporting features
Work Location: Hyderabad, India
Work mode: Work From Office
• Ability to easily use Android Studio, including the Android SDK.
• Prior experience as an Android Developer will be advantageous.
• Excellent coding and proofreading skills.
• Ability to manage your workload with minimal supervision
• Proofreading your code and correcting mistakes before each app is released.
• Collaborating with UI and UX Designers, as well as Software Testers, to ensure that each app is presentable and in perfect working order
A Delhi NCR-based Applied AI & Consumer Tech company tackling one of the largest unsolved consumer internet problems of our time.
We are a motley crew of smart, passionate and nice people who believe you can build a high-performing company with a culture of respect aka a sports team with a heart aka a caring meritocracy.
Position Overview:
As an Android Developer, you will have the exciting opportunity to work on developing, testing, and maintaining Android applications that deliver exceptional user experiences. Collaborating closely with cross-functional teams, you will play a key role in transforming ideas into functional and user-friendly applications that meet the needs of our customers.
Key Responsibilities:
● Participate in the entire application development lifecycle, from concept and design to testing and deployment.
● Write clean, efficient, and maintainable code following coding standards and best practices.
● Continuously research and stay up-to-date with the latest Android development trends, tools, and technologies.
● Assist in maintaining code repositories and version control using tools like Git.
● Collaborate with UI/UX designers to ensure seamless integration of design elements and optimal user experience.
Qualifications:
● Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
● Strong passion for mobile app development and a genuine interest in the Android platform.
● Solid understanding of Java and/or Kotlin programming languages.
● Basic knowledge of Android application architecture and components (Activities, Fragments, Services, etc.).
● Familiarity with development tools and frameworks such as Android Studio and Gradle.
● Adept problem-solving skills and the ability to think critically.
● Strong communication skills, both verbal and written.
● Prior experience with personal or academic Android projects is a plus.
● Knowledge of UI/UX principles and design patterns is a bonus.
Responsibilities:
- Develop and maintain the app(Android & iOS)
- Maintain quality of code
- Collaborate with other engineers in building applications.
- Attend daily stand up meetings.
- Discuss and write specifications for tasks.
- Assist system lead with system design.
- Conduct code reviews as requested.
- Test sites and applications in different browsers and environments.
- Learn and test new technologies, frameworks, and languages.
- Stay up to date with new trends and advancements in app development
Skills and Qualification:
- Knowledge of Dart Language
- Familiarity with version control
- Basic understanding of Flutter architecture, Widget trees
- Familiarity with app architecture (MVVM, MVP, MVC, etc...)
- Understanding of a sync operations
- Familiarity with local storage (like Dio, shared preferences, etc... )
- Familiarity with Flutter state management approach (BLoc, provider, etc...)
About Plum
We are making health insurance - simple, accessible and affordable. Hundreds of businesses of all sizes from startups to large corporates trust Plum for their employee's health protection.
Healthcare in India is seeing a phenomenal shift. Healthcare cost is seeing an inflation that is three times the general inflation. Treatments of diseases including Covid-19 can wipe out entire household savings. Majority of Indians won't be able to afford a health insurance on their own. As many as 600mn Indians would depend on employer-sponsored insurance.
Enter Plum. Plum is re-imagining the health insurance stack, and accelerating the penetration of health insurance in India to 100%. Plum has forged new underwriting and fraud detection algorithms to enable companies as small as 2 to benefit from a group insurance. The platform enables realtime insurance design & pricing to enable companies to buy insurance in 3-clicks. And offers employees a hassle-free claims experience through an integrated digital process.
Plum is backed by leading global investors including Tiger Global, Sequoia Capital, Tanglin Ventures and Incubate Fund (read more https://www.plumhq.com/blog/plum-series-a-funding">here)
Role and Responsibilities
- Design, build, and maintain high performance, reusable, and reliable Java code.
- Translate designs and wireframes into high quality components and modular code, ensuring the best possible performance, quality, and responsiveness of the application
- Strong advocate of Google’s Android design principles and interface guidelines
- Strong sense of ownership and integrity demonstrated through clear communication and collaboration.Having experience with building and maintaining an open source project or design library is a plus.
Qualifications
- 3 + years of experience of Android SDK, different versions of Android, and how to deal with different screen sizes.
- Experience with local databases, offline storage, threading, and performance tuningExperience with Kotlin and Jetpack Compose is desirable.
- Familiarity with RESTful APIs to connect Android applications to back-end services
- Familiarity with the use of additional sensors, such as camera, gyroscopes and accelerometers
- Knowledge of the open-source Android ecosystem and the libraries available for common tasks
- Ability to understand business requirements and translate them into technical requirements
We are looking for an experienced IOS developer who can help make our IOS app even more spectacular for the highest performing professionals globally.
About Track
The calendar is a tool that can assist you to achieve your highest human potential. Being productive with your time and collaborating efficiently with others is key to it. And Track (https://thetrackapp.com) is the fastest calendar experience ever. We've redesigned the calendar from the ground up to be fast, simple, effortless and also fun.
The Team
We are a small and efficient team and speed is part of everything we build and do
We are backed by amazing investors from India and US who have cofounded startups which had massive exits and the investors are currently on boards of Unicorn startups.
The Founder has over 12 years of experience in technology, studied and worked in the US for 8 years, and has cofounded a startup before.
Expected Skills :-
1. Abillity to write API calls that work efficiently in the background
2. Ideally worked with Realm DB but SQLLite is fine
3. Ability to take a design and create a replica using programmatic code. We don't use Storyboard.
4. Should have great knowledge of Architecture patterns like MVC, MVVM
5. Ability to work with Notifications
6. ideally should have worked on Extensions
7. Excellent debugging skills
8. Excellent problem solving skills
9. should understand how to make asyncronous non blocking API calls.
10. Having worked on a Chat application that uses Websockets, or XMPP or Firebase would be a big bonus .
11. Having worked with OAuth2 flows or Google apis would alos be a big bonus
Personal Skills
1. Go getter attitude. Should look for things that can improve and then go ahead and make them better.
How we hire?
You typically do a project that can be completed within a week. If the quality is great, we will pay you for it. Sometimes that's good enough. Sometimes we may to a problem solving / algorithm interview after that.
JOB DESCRIPTION:
Role:
• Develop features for Olacabs’s iOS application for customers
• Work on bug fixing and improving application performance
• Actively participate in feature design
• Unit-test code for robustness, including edge cases, usability, and general reliability
• Take ownership of the features assigned right from estimating timelines to Production release Desired experience
• Experience working on iOS platform
• Experience in developing B2C mobile applications
• Expertise in development and implementation of mobile applications with custom UI components
• Experienced in memory management and in designing high-performance apps
• Experience working with Google Maps and Social APIs
• Experience working with Objective C, Cocoa, Core frameworks and the iPhone SDK (5.0 and above).
• Experience in shipping applications through App store
• Experience with analytics tools like Google Analytics, Flurry
• Well versed with mobile UI/UX conventions
• Experience in using GITDesired Skills:
• Strong understanding of Object Oriented Programming, data structures and design patterns
• Strong in C/C++, Java programming skills
• Knowledge of software development processes & agile methodologies
• Strong problem solving and debugging skills
• Excellent English language (written & verbal) communication skills
• Good understanding of DB Design Ios-SDE3- should be strong in Cocoa touch, Swift, Objective-C, MVVM architecture.
Android
- Strong understanding of the OOPS concept.
- Working experience in Java and Kotlin language. (Must)
- Knowledge of Offline Sync, Multithreading, Realm/Room/SQLLite databases, Live data, Socket Programming. (Must)
- Familiar with Android Jetpack components (Must)
- Idea/Experience of MVC/MVVM and MVP
- At least 1 live application on Playstore. (Must)
- Good debugging and problem-solving skills.
Good to have
- Idea/experience in RxJava, RxKotlin
- Idea/experience of unit and instrumentation testing in Android
- Knowledge of Web RTC.
- Experience with tools like Git, Jira, Basecamp, BitBucket, Azure DevOps would be an advantage.
- Good to have experience working with IOT projects, Bluetooth technologies
- Active Open Source, GitHub or Stack Overflow contribution will be a big plus
- Having personal apps in play store will be an added advantage
- Working knowledge of the general mobile landscape, architectures, trends & emerging technologies.
What we look for in people
critical thinking, openness to unlearn and learn, collaborate seamlessly cross borders, enjoy working in a remote and fast paced environment, curious and passionate about solving customer problems, consensus driven decision making approach, persuasive communication and precision for details
- Strong experience in Flutter development for Android & iOS app
- Expertise in 3rd Party API implementation
- Experience in using GMAPS, FIREBASE other 3rd Party plugins








