Mobile Developer (iOS & Flutter)

• Design, build, and maintain efficient, reusable, and reliable Flutter code to develop feature-rich, high-performance mobile applications for Android and iOS platforms.

Collaborate with designers to implement visually stunning and responsive user interfaces, ensuring an excellent user experience across various devices and screen sizes.

• Integrate mobile applications with backend APIs and services to facilitate seamless data exchange and ensure smooth app functionality.

• Identify and resolve bugs, performance issues, and other problems that may arise during the development process or in the live applications.

• Continuously optimize application performance and enhance the user experience by employing efficient algorithms and techniques.

• Stay up-to-date with the latest trends, tools, and technologies related to mobile development, particularly within the Flutter ecosystem, and apply them to improve development processes and outcomes.

Requirements

• Minimum 4 years of professional experience in mobile app development, with a focus on Flutter.

• Proven expertise in developing robust and complex mobile applications using the Flutter framework.

• Solid understanding of mobile app development concepts, including UI/UX design, offline storage, threading, and performance optimization.

• Strong proficiency in Dart programming language, along with a good understanding of object-oriented programming (OOP) principles.

• Familiarity with RESTful APIs and experience in integrating mobile applications with backend services.

• Strong communication skills to collaborate effectively with team members and clients.

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.

Some of the key responsibilities of this candidate are:

• Understand the EdTech context
• Innovate, evaluate, and deploy various android and IOs Features 
• Ability to take ownership over your work.
• An understanding of React Native best practices and a commitment to following them.

• Experience with React Js, React Native, JavaScript including DOM Manipulation and JavaScript object model.
• Thorough understanding of React Native and its core Principles.
• Good Knowledge of HTML5, CSS.
• Familiarity with code versioning tools (Such as Git, SVN or Mercurial)
• Familiarity with RESTful APIs
• Good knowledge of database (MySQL, SQLlite, RealM etc ..)
• Familiarity with modern front-end build pipelines and tools.
• Experience with common front-end development tools such as Babel, Web pack, NPM etc.
• Experience with Native Mobile app deployment on App store and google play store.

Company Introduction 
Crumb Software is a Design Studio seeking creative and skilled developers to join our fast-growing team. Our mission is to design and develop technology that improves its users' lives while providing an exceptionally high level of service to our clients.

We are looking for experienced developers who want to be part of a fast-paced, dynamic environment, where everyone's opinions and efforts are valued. We hire outstanding professionals and allow them to thrive in a collaborative atmosphere that values learning, growth, and hard work.

If you have the desire to be a part of an exciting, challenging, and rapidly-growing software development consultancy, and if you are passionate about software development and creating the finest apps in the market, please consider applying.

Job Description 
We are looking for React Native developers 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.

This is a contract-based position and we're looking for immediate joiners. 

Responsibilities

• Work as a part of a small team to build React Native iOS / Android applications
• Collaborate closely with designer(s) to build the envisioned user experience
• Architect, build, and maintain excellent React Native applications with clean code
• Implement clean, modern, smooth animations and transitions that provide an excellent user experience
• Build pixel-perfect, buttery smooth UI's across both mobile platforms that match designs
• Integrate with the backend and other third-party APIs
• Work with native modules if required
• Leverage native APIs for deep integrations with both platforms
• Diagnose and fix bugs, performance bottlenecks for performance that feels native

Requirements

• 3+ years of professional, non-internship experience working with React Native
• Firm grasp of the JavaScript language and its nuances, including ES6+ syntax
• An understanding of React Native best practices and a commitment to following them
• Knowledge of functional programming and React Hooks
• Ability to work through new and difficult React Native issues and contribute to libraries as needed
• Familiarity with native build tools, like XCode and Gradle
• Familiarity with Expo and related libraries
• Excellent verbal and written communication skills
• Experience and desire to work with a remote, distributed team

Eximius is a micro-VC which invests into early-stage startups. One of our portfolio startup iTribe is looking for "Hustlers", "First Principle Thinkers", "Crazy and trips on creating products out of the box from scratch", "Outspoken", "unafraid of users ripping your product".

Responsibilities:

• Craft clean, manageable code, maintain proper documentation and code integrity
• Design advanced applications in mobile which is the main user facing product
• Maintain quality and ensure responsiveness, cross platform optimisation of applications
• Create, test and deploy the applications on production servers
• Continuously discover, evaluate, and implement new technologies and frameworks to maximize development efficiency

• Responsible for security and data protection.
  
  Communication & Collaboration

• Collaborate with engineering and cross-functional teams to define, design, and ship new features
• Unblock peers and keep all the internal and external teams informed about the progress of development

Requirements

• 2-5 years working as a full-time professional developer (Mobile) and 1 Year experience in a flutter is a must
• Should be familiar with REST Api's, websockets and Databases in mobile integration.
• Pixel perfectionist in UI engineering, should have a nack of telling desinger about the do's and dont's
• Well-versed with Software Development Life Cycle
• Demonstrate the ability to be a self-starter, learn and implement new technologies/ frameworks
• Excellent analytical and problem-solving skills
• Understanding and implementation of security and data protection.

Why join iTribe?

• Opportunity to be part of the founding team and work directly with the founders
• Build a product which is not done in decades
• Competitive Salary
• ESOPs - ownership in the company
• Medical Insurances
• Subscriptions to premium platforms for learning
• Books that you ask for
• Friendly leave policy

Mandatory: Hands on experience working with Swift 3 , Swift 4. Very strong logical skills. Good hold on operating system concepts and data structure. Experience with web services , core-data , camera kit , image caching concepts, keychain , past experience working with one of the design patterns like MVC / MVVM / Viper , network check.