Mobile Cross Platform Xamarin 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.

Software Development Engineer II (App)

About the company: 

At WizCommerce, we’re building the AI Operating System for Wholesale Distribution — transforming how manufacturers, wholesalers, and distributors sell, serve, and scale.

With a growing customer base across North America, WizCommerce helps B2B businesses move beyond disconnected systems and manual processes with an integrated, AI-powered platform.

Our platform brings together everything a wholesale business needs to sell smarter and faster. With WizCommerce, businesses can:

• Take orders easily — whether at a trade show, during customer visits, or online.
• Save hours of manual work by letting AI handle repetitive tasks like order entry or creating product content.
• Offer a modern shopping experience through their own branded online store.
• Access real-time insights on what’s selling, which customers to focus on, and where new opportunities lie.

The wholesale industry is at a turning point — outdated systems and offline workflows can no longer keep up. WizCommerce brings the speed, intelligence, and design quality of modern consumer experiences to the B2B world, helping companies operate more efficiently and profitably.

Backed by leading global investors including Peak XV Partners (formerly Sequoia Capital India), Z47 (formerly Matrix Partners), Blume Ventures, and Alpha Wave Global, we’re rapidly scaling and redefining how wholesale and distribution businesses sell and grow.

If you want to be part of a fast-growing team that’s disrupting a $20 trillion global industry, WizCommerce is the place to be.

Read more about us in Economic Times, The Morning Star, YourStory, or on our website!

Founders:

Divyaanshu Makkar (Co-founder, CEO)

Vikas Garg (Co-founder, CCO)

Job Description:

Role & Responsibilities:

• Architect and oversee the development of our mobile application using React Native, ensuring high-quality code, performance, and user experience.
• Collaborate closely with Product Managers, Designers, and other stakeholders to understand requirements and translate them into technical specifications and deliverables.
• Drive the end-to-end software development lifecycle, including planning, estimation, execution, and delivery of mobile app projects.
• Take ownership of technical decisions, code reviews, and ensure best practices are followed in the team.
• Provide technical mentorship to engineers, promoting their professional growth and skill development.
• Stay up-to-date with industry trends, emerging technologies, and best practices in mobile app development to drive continuous improvement and innovation.

Requirements:

• Solid experience in mobile app development using React Native, with a proven track record of successfully delivering high-quality mobile applications.
• 3-4 years of experience with mobile app development with React Native or web development with React
• Strong understanding of software development methodologies, architecture, and design patterns.
• Excellent verbal and written communication skills, with the ability to effectively interact with cross-functional teams and stakeholders.
• Strong problem-solving skills and the ability to make strategic and technical decisions.
• Experience with B2B SaaS products or similar industries is a plus.

Benefits: 

• Opportunity to work in a fast-paced, growing B2B SaaS company.
• Collaborative and innovative work environment.
• Competitive salary and benefits package.
• Growth and professional development opportunities.
• Flexible working hours to accommodate your schedule.

Compensation: Best in the industry

Role location: Bengaluru/Gurugram

Website Link: https://www.wizcommerce.com/