React Native Developer

Required Skills: Advanced Flutter & Dart Expertise, Scalable Mobile Architecture Design, Performance Optimization & Profiling, OTT & Media App Engineering, Code Quality, Leadership & Cross-Functional Collaboration

Criteria:

• 6+ years of total software development experience with minimum 3+ years in Flutter
• Product-based company experience is mandatory (B2C scale preferred)
• Proven ability to own end-to-end Flutter mobile architecture for high-scale apps
• Strong expertise in Dart, Flutter SDK internals, and advanced state management (Bloc / Riverpod / Provider)
• Hands-on experience with platform channels and native integrations (Android & iOS)
• Deep knowledge of performance optimization: app startup time, FPS, memory leaks, widget rebuilds, rendering pipeline
• Experience with profiling tools (Dart DevTools, Android Profiler, Xcode Instruments)
• Strong skills in offline-first architecture, caching layers, and API integrations
• Ability to optimize video playback, downloads, DRM, and OTT workflows
• Strong command of clean code, SOLID principles, and scalable mobile system design
• Experience reviewing code and mentoring engineers (Senior IC role)

Description

Role Overview

We are looking for an experienced Flutter SDE III who can take complete ownership of architecture, performance optimization, and app scalability for our OTT mobile applications. This is a senior individual contributor role requiring deep technical expertise and the ability to influence design decisions at a product level.

Key Responsibilities

1. Architecture & Design (High-Impact IC Role)

• Own the end-to-end architecture of company’s Flutter mobile applications.

• Design scalable, modular, testable app ecosystems aligned with OTT-specific performance constraints.

• Lead decisions around state management, navigation hierarchy, API structure, offline capabilities, and security.

2. Performance & Device Optimization

• Diagnose and resolve mobile performance bottlenecks, including:

  o App startup time, FPS drops, memory leaks.

  o Heating issues, over-rendering, and expensive widget rebuilds.

  o Battery optimization, efficient network calls, caching strategy.

• Run in-depth profiling using tools like Dart DevTools, Android Profiler, and Xcode Instruments.

3. OTT-Specific Engineering

• Optimize video playback workflows for low-latency streaming.

• Implement efficient background processes for downloads, DRM, content sync, and push notifications.

4. Product & User Experience Ownership

• Collaborate closely with Product, Backend, and Video Engineering teams.

• Convert business/product requirements into high-performance technical solutions.

• Ensure UI/UX consistency across platforms while maintaining performance budgets.

5. Code Quality & Leadership

• Write clean, extensible, and maintainable code with strong adherence to SOLID and reactive programming principles.

• Review code for mid-level and junior engineers; act as a mentor across teams.

• Establish engineering standards, internal frameworks, and reusable components for long-term scalability.

Required Skills & Experience

Technical Must-Haves

• 6+ years of total experience with 3+ years in Flutter for large-scale products.

• Mandatory product-based company background (B2C scale preferred).

• Strong expertise in:

  o Dart, Flutter SDK internals

  o Bloc, Riverpod, Provider, or other state management approaches

  o Custom animations, rendering pipeline, shader-based optimization

  o Platform channels (Android/iOS) and native integrations

  o API integration, caching layers, offline-first architecture

• Strong understanding of mobile system design, scalable architecture, and low-level performance engineering.

Good to Have

• Experience with video streaming apps, OTT platforms, or media-heavy applications.

• Understanding of analytics frameworks (Firebase, Segment, Mixpanel).

• Exposure to CI/CD pipelines, automated testing, and fastlane.

Personality & Mindset

• Product thinking, not just feature-building.

• Ownership-driven with strong ability to take strategic technical decisions.

• Comfortable working in a fast-paced 0→1 and scale-up environment.

Why Join company?

• Work on a high-growth OTT app with millions of users.

• Opportunity to own the core mobile experience end-to-end.

• Build impact-heavy features at scale with a lean, highly skilled engineering team.

• Significant experience working with React web and mobile along with tools like Flux, Flow, Redux, etc.
• In-depth knowledge of JavaScript, CSS, HTML, functional programming, and front-end languages
• Strong knowledge of React fundamentals such as Virtual DOM, component lifecycle, and component state
• A complete understanding of the full mobile app development lifecycle right from prototyping
• Knowledge of type checking, unit testing, typescript, prop types, and code debugging
• Experience working with REST APIs, document request models, offline storage, and third-party libraries
• Strong understanding of web technologies like JavaScript, HTML, and CSS
• Knowledge of user interface design and responsive designs
• Well-versed in a variety of React Native software and technologies such as Jest, Enzyme, ESLint, and so on

We are looking for a Senior React Native Mobile App 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

• Firm grasp of the JavaScript and TypeScript or ClojureScript language and its nuances, including ES6+ syntax
• Knowledge of 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, IntelliJ
• Understanding of REST APIs, the document request model, and offline storage
• Experiences with automated testing suites, like Jest or Mocha

Our client is more than 2 decades old NBFC registered with the RBI. The company was set up with an aim to empower rural entrepreneurs, SMEs, and small institutions by micro-financing. The company has come a long way since its inception in 1992 and has evolved with time with the introduction of its App in the small loans sector. At present, the company has more than 5000 employees and has serviced millions of borrowers to accomplish their dreams.

• Translating designs and wireframes into high quality code
• Designing and maintaining high performance, reusable, and reliable Java code
• Ensuring the best possible performance and quality of the application
• Identifying and fixing bugs
• Helping maintain code quality and automatization

Desired Candidate Profile

1. A candidate with 2+ years of experience in building high-quality Android apps. 
2. A strong understanding of the full life cycle of app development.
3. Experience in designing, developing, debugging and deploying software for server-side development using Java/ Kotlin language.
4. Understanding and the sound of Android SDK, in different versions of Android, and how to effectively write code for a multitude of Android devices.
5. Excellent knowledge of Android design principles and third-party libraries 
6. Experience in building RESTful API's focusing on integration with back-end services.
7. Hands on experience with continuous integration.
8. Passionate about Android and are always up to date with the latest industry trends concerning OS, devices, applications, web technologies and new user interactions as they are released.

TECHNICAL SKILLSET REQUIRED:

• Experience building and maintaining code for:
• Android platform (Eclipse/Android Studio, Java, Android SDK) OR
• Any other platform, with proven track record of picking up new skills
• Hands-on experience with modern technologies.
• Excellent Java programming skills
• Excellent analytical, debugging and troubleshooting skills (battery usage, network usage optimization, etc)
• Passion for usability, simplicity and consistency in software development.
• Excellent communication and collaborative skills.
• Exposure to Agile methodologies
• Bonus points for Knowledge of major mobile platforms (iOS, WP8, etc.)

 POSITION:

• Be part of fastest growing eCommerce platforms in exciting application areas like core commerce, supply chain, logistics and fulfilment, merchant, mobile commerce, analytics, automation and a lot more for the global markets positioned for Asia.
• Develop awesome new features front to back (using Java and Android SDK)
• Responsibilities will include all aspects of software development from design, coding, testing, customer feedback and maintenance.
• Work with a team of amazing developers and designers to build simple, beautiful and consistent user experiences for our mobile apps
• Invent and prototype new features, then build, test and ship them in our products.
• Drive the implementation of new technologies which improve our ability to build great products.

QUALIFICATION

• A Bachelor’s degree in Computer Science (or equivalent experience)