Senior Software Engineer - Flutter

We're looking for a Mobile Engineering Lead (Flutter) who can own the end-to-end architecture, development, and delivery of our mobile applications. This is a hands-on leadership role for someone who has grown in product-based startups, understands rapid iteration, and can balance speed, quality, and scalability. You'll lead by example, writing production-grade Flutter code, shaping mobile architecture, and collaborating deeply with product and design teams. If you enjoy building consumer-facing products, taking ownership, and solving real user problems in a fast-paced startup environment, this role is for you.

Exp - 5 yrs - 9 yrs

Job Location - Bangalore [5 days Work from office]

Job Responsibilities:

• Lead and own mobile app development using Flutter (Android & iOS).
• Design and implement scalable, maintainable, and high-performance mobile architectures.
• Work closely with product managers and designers to translate requirements into intuitive user experiences.
• Drive a strong product mindset within the mobile team, focusing on user impact, engagement, and retention.
• Conduct code reviews, enforce best practices, and maintain high engineering standards.
• Mentor and guide mobile engineers through hands-on technical leadership and feedback.
• Manage mobile CI/CD pipelines, release cycles, and app store deployments.
• Monitor app performance, crashes, and production issues; ensure fast resolution.
• Stay updated with Flutter ecosystem trends and proactively improve the mobile stack.

Requirements:

• 4-7 years of experience in mobile application development, preferably in product-based startups.
• Strong hands-on experience with Flutter and Dart in production applications.
• Proven experience building and scaling consumer-facing mobile products.
• Solid understanding of mobile architecture patterns and state management.
• Experience integrating REST APIs, authentication, analytics, and third-party SDKs.
• Hands-on experience with performance optimization, debugging, and profiling.
• Experience with mobile CI/CD pipelines and app store release processes.
• Strong problem-solving skills and ability to work in fast-moving startup teams.
• Excellent communication and collaboration skills.
• Prior startup experience in health, fitness, or consumer internet products.
• Exposure to native Android (Kotlin) or iOS (Swift) for platform-specific integrations.
• Experience with offline-first apps, push notifications, deep linking, and background tasks.
• Familiarity with Agile methodologies (Scrum/Kanban).
• Experience working with analytics and data-driven product development.

• 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.

We are hiring a  Flutter developer to engineer applications that will run across Android, iOS, and the web. We are looking for someone passionate about performance, reliability, and design with the experience and credentials to back up that passion. Someone who can take ownership of applications, solve technical challenges and take pride in their solutions and code.

The ideal candidate will have experience building native applications, JavaScript knowledge, and a portfolio of applications already published either in the app store or self-hosted.

You’ll be a key member of the team tasked with contributing to a number of high-value projects within Marj Technologies.

Qualifications

• Have two or more iOS/Android apps developed with Flutter. Either deployed on the AppStore/Google Play or available on Github.

• Over one year of experience with developing Flutter applications for mobile and web.

• Experience with third-party libraries and APIs.

• Understanding of the Agile development life-cycle.

• Experience with automated testing and building.

• Experience with Git and Github.

• Proven experience in writing readable code, creating extensive documentation for

  existing code and refactoring previously written code.

• Well-versed with Flutter Null Safety and Bloc architecture.

• Good communication & Problem-solving skills.

• A minimum of 3yrs of coding as an iOS Developer.
• In-depth experience with Swift and Xcode.
• Up to date with the latest Cocoa and iOS trends.
• Understanding of UI Kit, Core Animation, Interactions, GCD & Networking.
• Excellent understanding of design patterns & Object Oriented Programming.
• Understanding of analytics, remote reporting and measurements.
• Experience of working with Continuous Integration (CI) and Unit Testing on iOS.
• Experience with API’s and core data.
• Excellent debugging skills.
• Experience working with Git.
• Knowledge of socket based networking desirable.
• Understanding of the iOS ecosystem (APNs, Code signing, iTunes Connect, TestFlight).

Roles and Responsibilities

Hiring for Mobile app Developer (1 to 2 yrs.)

- Develop hybrid mobile app for iOS and Android platform using Flutter framework

- Hands of experience in Flutter

- Proven software development experience

- Flutter/ React Native Developer

- Must have Experienced 6 months to 2 yrs. in above

- Developed at least 2 apps and live

Desired Candidate Profile

Fresher, Experience mobile app developer

- Experience in developing Android/ iOS applications

- Testing and debugging skills

- Design, Develop and maintain applications

• Manage high-level architecture and design data flows in the Android and iOS app in (Dart, Flutter framework)
• Add new features and automate functionalities in backend hosted on Firebase (Typescript, ReactJS framework)
• Setup Marketing and Analytics tools in the app to get relevant daily usage insights and target users in different campaigns. (3rd party tools, Mixpanel)
• Experiment with the live data stream from wearable IoT devices to generate insights using ML models in production.
• Deploying ML models in production to be used inside the app community section.

• Experience: 2+ year of software development experience

• Tinkerer - We are a team of builders and love to get our hands dirty on new ideas and technologies. If you love to spend your time working on side-projects, you’ll fit right in.
• Problem Solver - Software development could involve a constant stream of challenges. Confidence and skill to navigate through them is an essential skill to possess.
• Team Player - At iMumz, we believe in building in a strong and small A-Team. A drive to work and contribute towards the team’s overall success and progress is desired.
• Proactive Learner - Technologies change. Frameworks get disrupted every day. Adaptability and desire to stretch to be a constant learner is highly appreciated.

• Be a part of India’s fastest-growing platform for maternal health and get hands-on experience in the growth journey of a digital product.
• Get hands-on experience of building a product for 100,000+ and growing community
• Work on building the core offerings directly with the founders.
• Freedom to work from anywhere till the work gets done.

Responsibilities:

• Develop and maintain the partner(fleet) application.
• Sit with the core team to learn and address various complications through tech.
• Attend meetings to understand the intricacies of the business and implement quick features/automation to improve the application.

Requirements:

• If you can develop flutter applications, then go ahead and click Apply. Added Advantage - If you have experience in MERN stack.