Android Developer

Position: iOS Developer (1 to 4 years)

Location: Marol, Andheri East, Mumbai

Company: Big Rattle Technologies Private Limited

Open for candidates from Mumbai only

Immediate Joiners only

We are looking for an iOS developer having 1 to 4 years of experience. You must have experience in delivering at least 3-4 projects on iOS as a part of your work profile.

Required Skills (more the better):

• Native iOS Application Development with SwiftUI, iOS SDK, Xcode, Cocoa Layer, Media Layer, Core Service Layer, Core OS Layer, iOS Frameworks, iOS Developer Tools, iOS programming, iOS Human Interface.
• Experience with iOS frameworks such as Core Data, Core Animation, Core Graphics, and Core Text
• Familiarity with RESTful APIs to connect iOS applications to back-end services.
• Experience with third-party libraries and APIs (e.g., Alamofire, Firebase, etc.).
• Deployment/ publishing apps in Apple App Store.

Good to have Skills:

• Understanding of Objective-C.
• Knowledge of mobile security and secure coding practices.
• Hybrid mobile application development using Flutter.

Additional Skills:

• Versioning tools such as Git, Bit Bucket, and concepts like branching
• DevOps: Knowledge of operating systems, hosting and deployment on cloud platforms like Amazon Web Services, Google Cloud, Azure etc will be added advantage

Responsibilities will include:

• Developing applications for iPhone and iPad
• Reviewing new releases, SDKs and updates in the mobile space
• Writing clean, well-designed code
• Debugging code and fixing bugs
• Ensuring code quality and security by following industry standards
• Managing code repositories and deploying builds
• Contributing to all phases of the development lifecycle
• Participating in team meetings and client meetings/ calls
• Learning new technologies

Required Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Information Technology, or related field.

Why should you join Big Rattle?

Big Rattle Technologies specializes in AI/ ML Products and Solutions as well as Mobile and Web Application Development. Our clients include Fortune 500 companies. Over the past 13 years, we have delivered multiple projects for international and Indian clients from various industries like FMCG, Banking and Finance, Automobiles, Ecommerce, etc. We also specialise in Product Development for our clients.

Big Rattle Technologies Private Limited is ISO 27001:2022 certified and CyberGRX certified.

What We Offer:

• Opportunity to work on diverse projects for Fortune 500 clients.
• Competitive salary and performance-based growth.
• Dynamic, collaborative, and growth-oriented work environment.
• Direct impact on product quality and client satisfaction.
• 5-day hybrid work week.
• Certification reimbursement.
• Healthcare coverage.

CometChat Overview

CometChat is a full-stack conversational platform built to unify every layer of interaction - bringing together real-time conversations (chat, messaging, voice, and video), AI Agents, moderation, notifications, and analytics in one modular, developer-first solution.

We were also recognized on Forbes' 2026 America's Top 500 Startup Employers List - a reflection of the team and culture we've been deliberate about building.

We believe the interface of the future is conversation - not clicks. Every app will soon have an AI layer that's as native as text messaging today. That's why we're building the infrastructure for the world's AI-powered conversations - from human-to-human, to human-to-agent, to multi-party collaboration with AI in the mix.

From AI onboarding assistants that get users productive in minutes, to copilots that perform complex workflows in-app, to intelligent moderators that protect and guide communities in real time - our AI Agent platform makes it all possible.

With CometChat's ready-to-use UI kits, powerful SDKs, and our Full Stack AI Agent Platform, product teams across startups and enterprises can launch safe, scalable, and smart in-app interactions faster than ever.

Why Join Us Now

We're at the tipping point where AI becomes a native part of every conversation. At CometChat, you'll help shape a future where users can talk to their apps as naturally as to a friend - where agents think, reason, act, and collaborate with humans in real time.

You won't just be joining a product team - you'll be building the standard for AI interaction layers: agent-aware UI, intelligent guardrails, rich actions libraries, and multi-party collaboration between people and AI.

If you want to help define how the next billion users will communicate - and push the boundaries of what's possible in real-time, AI-powered engagement - we'd love to work with you.

What we mean by AI-native

AI-native here means you build with agents by default. We expect 100% of the code to be generated via agentic tools (Cursor, Claude Code, and similar), while you own everything that actually matters: problem framing, architecture, tradeoffs, review quality, tests, performance, and security. This is not "vibe coding." The code is generated. The thinking is yours. You should be great at steering agents, validating output, catching subtle issues early, and debugging code you did not manually write.

Why AI-native

Software development is changing permanently, and we are leaning all the way in. You will work in a team that ships fast with agents, where your leverage comes from judgment and systems thinking rather than typing speed. You will get access to whatever AI tools you need (Cursor, Claude Code, or anything else that makes you effective), and the freedom to use them aggressively. If you want to operate at the edge of how modern engineering gets done and level up your output, this role is built for that.

Join us to build where AI meets human connection.

Position Overview & Priorities

We are looking for versatile and experienced technical additions to our development team. The position offers an extensive amount of ownership and influence over our development process as we scale the team. We’re looking for people who enjoy solving meaningful problems and love seeing the things they build in the hands of real users.

Primary responsibility would be:

• Designing and building applications/SDK for the iOS platform
• Ensuring the performance, quality, and responsiveness of applications
• Collaborating with a team to define, design, and ship new features
• Defining correct architecture and following the right design principles.
• Helping maintain code quality, organization, and automatization

Work Location

Chembur, Mumbai

Prioritized Experiences and Capabilities

• Minimum 2-5 years of experience in iOS app development
• Leverage AI-native development workflows, including agentic IDEs and coding assistants (e.g., Cursor, Claude Code), to accelerate delivery while maintaining code quality, security, and engineering standards.
• Proficiency with Objective-C and Swift.
• Experience in iOS frameworks such as Core Data, Core Animation, etc.
• Experience with offline storage, threading, and performance tuning
• Familiarity with RESTful APIs to connect iOS applications to back-end services
• Knowledge of other web technologies and UI/UX standards
• Understanding of Apple’s design principles and interface guidelines
• Knowledge of low-level C-based libraries is preferred
• Familiarity with cloud message APIs and push notifications
• Knack for benchmarking and optimization
• Proficient understanding of code versioning tools
• Familiarity with continuous integration

• Advise and discuss with the team on the architecture and requirements.
• Bring your experience for mobile User Experience.
• Set up actions to ensure high level of quality and satisfaction
• Build and maintain efficient and reliable code.
• Support continuous improvement by investigating alternatives and technologies.

• Bachelor’s Degree in Informatics Engineering or similar
• Minimum of 4+ years work experience in similar roles
• Strong knowledge in Front-end frameworks (React Native)
• Strong knowledge in the mobile language (swift, objective-c, java, kotlin)
• Experience in unit testing and TDD.
• Advance knowledge in using testing frameworks ( Karma, Jest, Appium, Cypress ).
• Experience with Agile Methodologies (Scrum, Kanban)
• Experience in CI/CD
• Having a coaching profile, good communication skills is crucial to ensure good exchange and sharing of information within and outside of the train
• Being able to provide based on the audience synthetic or detailed information is mandatory
• Being curious to continuously learn and being a leader in your domain of expertise
• Immediate or very low availability
• Fluent in English - written and spoken (mandatory)

Job Title: Android Developer

Experience: 2 yrs to 6 yrs

Notice Period: upto 15 days

Location: Chennai

Job Description :

• Strong knowledge of Android SDK, different versions of Android, and how to deal with different screen sizes
• Strong knowledge of Android UI design principles, architectural patterns, and best practices
• Strong Knowledge in integrating  Android apps with back-end applications through RESTful web services
• Experience with offline storage, threading, and performance tuning
• Experience in app release management and publishing
• Familiarity with cloud message APIs and push notifications using FCM
• Familiarity with the use of additional sensors, such as gyroscopes and accelerometers
• Knowledge of the open-source Android ecosystem and the libraries
• Ability to understand business requirements and translate them into technical documents
• Understanding of Google’s Android design principles and interface guidelines

Scope of Work:

• Understand the Requirement
• Create wireframes / UI
• App development & testing
• Release Management & Publishing apps
• Following Coding best practices

1. Designing and developing advanced applications for android platforms.
2. Collaborate with UI/UX designers as well as the software engineers to make sure that each app is presentable.
3. Test the applications, identify any bugs and resolve them
4. Manage tasks within Agile framework and controlled JIRA workflow.
5. Document architecture and implementation for internal and external components.

1. 1+ years of experience in Android Development .
2. Previous experience working in a fast paced start up is a plus.
3. Released at least 1 app or have a project in works that you can tell us about.
4. Experience publishing a high-quality android application to the google store.
5. Solid understanding of the full mobile development life cycle.
6. Experience working with Android SDK and Android studio.
7. Good in JAVA (j2se) and Kotlin
8. Experience with APIs (OAuth, XML, JSON, REST, etc. )
9. Ability to understand business requirements and convert them into technical requirements.

https://www.alivecor.com/">AliveCor, the pioneer of the smartphone EKG, with millions of EKGs from a large and growing user base, seeks a Senior Android Software Engineer to contribute to the mobile application team. You will be an integral member of our engineering team, responsible for developing industry-leading mobile applications that transform the healthcare industry and affect the way consumers use, engage, and act on their health data.

• Collaborate closely with our AI, security, backend, hardware, and product teams to deliver mission critical software.
• Work in a fast-paced agile environment, delivering quality estimates, designs, and implementations.
• Problem solve for complex global business requirements.
• Accountable for all aspects of modern software development.
• Proactive in identifying problems and a team player when presenting solutions.
• Excellent communications skills.
• Commitment to delivering results.
• Passionate about continuous improvement.

• BE in Computer Science or a related discipline, or related practical experience.
• 5-8 years of Android programming experience. You’ve shipped multiple apps to the Play Store.
• Deep expertise with Java and Android SDKs.
• Experience with Android frameworks such as Retrofit, RxJava, Dagger, Junit, Mockito.
• Experience with modern programming principles, design patterns and development tools.
• Familiarity with RESTful APIs to connect Android applications to back-end services.

AliveCor is on a mission to define modern healthcare through data, design and disruption. We’ve pioneered the creation of FDA-cleared machine-learning techniques, transformed wearable medtech to put proactive heart care at everyone’s fingertips. Kardia is the most clinically validated mobile EKG technology. AliveCor was named as one of the Top 10 Most Innovative Companies in Health for 2017 by Fast Company as part of the publication’s annual ranking of the world’s Most Innovative Companies. AliveCor was awarded the 2015 Tech Pioneer by the World Economic Forum and one of the 50 Smartest Companies in 2015 by the MIT Technology Review. AliveCor recently announced a collaboration with Mayo Clinic that will result in new machine learning capabilities to unlock previously hidden health indicators in EKG data, potentially improving heart health as well as overall health care for a variety of conditions. AliveCor is a privately held company headquartered in Mountain View, CA.

Watch the following video demonstrating our product.

https://www.youtube.com/watch?v=8I9xosgA-Ig">KardiaMobile: How's your heart?
https://www.youtube.com/watch?v=8I9xosgA-Ig">https://www.youtube.com/watch?v=8I9xosgA-Ig

• 3-5 years of experience in Native Android App development (Preferably for a B2C Product)
• Proficiency in various algorithms and data structures.
• Familiar with Kotlin/Java language, and experience with Object-Oriented Design.
• Strong experience with REST APIs, storage databases, Multi-threading, performance and memory tuning.
• Good knowledge of architectural patterns such as MVP and MVVM.