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.

About the Job

As a specialist in electronics and software for the past 20 years, in-tech is a dynamic, fast-growing engineering company headquartered in Munich, Germany employing around 2350 employees globally across 20 project locations in 8 countries.in-tech develops innovative engineering solutions for the automotive, rail, aerospace, defence, and industrial sectors.

We are committed to a flexible, modern work culture and work-life balance. Our colour orange stands for liveliness, warmth, and dynamism. We value a strong team spirit, fresh ideas and a positive work culture. We call it the “Orange Spirit”!

Since 2024, in-tech became a subsidiary of Infosys Ltd. This strategic partnership enables us to offer our customers even more comprehensive development and digitalisation services and a greater offshore capability.

We are looking for a Senior Xamarin Developer who is passionate about building high-quality, scalable, and performance-driven mobile applications. This role is ideal for a versatile professional with strong expertise in cross-platform mobile development, backend API development, and database-driven applications. The ideal candidate will work across Xamarin mobile applications, ASP.NET Core backend services, and SQL Server databases, ensuring seamless integration, optimal performance, and a superior user experience. If you enjoy working in a collaborative, fast-growing environment with a strong culture of innovation and teamwork, we’d love to hear from you!

Responsibilities

• Design, develop, and maintain cross-platform mobile applications using Xamarin forms and Xamarin Native for iOS and Android platforms.
• Build, integrate, and maintain RESTful APIs and backend services using ASP.NET Core.
• Develop secure, scalable, and high-performance backend components to support mobile and enterprise applications.
• Work with SQL Server or other relational databases for data modeling, complex queries, and performance optimization.
• Implement efficient data access layers and ensure data integrity across mobile and backend systems.
• Perform unit testing, integration testing, debugging, and troubleshooting for both mobile applications and backend services.
• Optimize application performance, responsiveness, and scalability across multiple devices and platforms.
• Collaborate with UI/UX designers, product owners, QA teams, and cross-functional stakeholders to gather requirements and deliver robust solutions.
• Participate in code reviews, enforce coding standards, and mentor junior developers as needed.
• Prepare technical documentation and provide deployment, release, and post-production support.

Requirements

• 8–10 years of hands-on experience in mobile application and backend development.
• Strong expertise in Xamarin.Forms and Xamarin.
• Native for cross-platform mobile development.
• Proficiency in C#,.NET, and ASP.NET Core for backend and API development.
• Extensive experience designing and consuming RESTful APIs.
• Solid experience working with SQL Server or other relational databases, including query optimization and performance tuning.
• Strong understanding of mobile application architecture, design patterns, and best practices.
• Experience with unit testing frameworks, debugging tools, and automated testing practices.
• Knowledge of application performance optimization and scalability principles.
• Familiarity with source control systems (e.g., Git) and CI/CD pipelines.
• Experience working in Agile or iterative development environments.
• Strong analytical, problem-solving, and communication skills.
• Ability to work independently while collaborating effectively within a team.

Apply with us

If you have experience and team spirit and are looking for a great place to work, then start your job with us.

As part of our dedication to the diversity of our workforce, in-tech is committed to equal employment opportunity without regard for age, race, colour, national origin, ethnicity, gender, protected veteran status, disability, sexual orientation, gender identity, or religion.

Requirements / Experience:

• Min 4 Years of Experience
• Experience in cross-platform mobile software development (Android/iOS) using technologies such as React Native, Flutter, GO/ Golang, Xamarin, Blazor, JavaScript, TypeScript, Dart, C#
• Familiarity with API Development (REST, Web API, WCF, SOAP)
• Experience with full-lifecycle design, development, and testing of critical business applications
• Good problem-solving skills with attention to detail
• Strong verbal, written, interpersonal, and organizational skills
• Ability to work independently and in a team environment
• Ability to multi-task effectively
• Reliable, highly motivated, with a positive attitude
• Experience with MsSQL, MariaDB

About the firm:

Sustainability lies at the core of Stantech AI, our vision is to empower organisations to derive actionable insights: effectuating a smarter way of working. We operate on the premise that each firm is unique and as such requires its own idiosyncratic solutions. Putting this principle into practice, we deliver tailor made solutions to digitalise, optimise, and strategise fundamental processes underpinning the client organisations. For more information, please refer to our website: www.stantech.ai.

Position Overview

We are seeking a skilled React Native Mobile Developer with a minimum of 3 years of professional experience to join our dynamic team. The ideal candidate will have a strong design sense and proven expertise in developing scalable, high-performance mobile applications—especially in the enterprise domain (e.g., sales team apps, sales CRM, purchase modules, and similar solutions). You will work closely with our cross-functional teams to translate requirements into compelling features and ensure seamless user experiences.

Key Responsibilities:

· Design & Development: Build and maintain robust, efficient, and scalable mobile applications using React Native for both iOS and Android platforms.

· Collaboration: Work with cross-functional teams (Product, Design, QA, etc.) to identify user needs and incorporate feedback effectively.

· Code Quality: Write clean, maintainable, and well-documented code. Follow best coding practices and maintain compliance with organizational guidelines.

· Performance Optimization: Optimize app performance for speed and responsiveness; troubleshoot and debug to maintain smooth user experiences.

· Integration: Collaborate with backend teams to integrate RESTful APIs and other third-party services into mobile applications.

· Continuous Improvement: Stay updated with the latest industry trends and best practices in mobile development, ensuring the continuous improvement of apps.

Skills and Qualifications:

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

• Proven experience as a React Native Developer with a strong portfolio of released applications on the App store or the Android market.

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.

• Knowledge of mobile app development life cycle, and experience with performance and memory tuning tools.

• Strong understanding of handling various mobile device capabilities such as GPS, battery optimization, and data connectivity toggles (e.g., airplane mode).

• Familiarity with cloud message APIs and push notifications.

Financial Package:

• Rs. 10-20 Lakhs per annum, contingent on work experience.

Industry

Post - Xamarin Developer

Experience – 0.6 months -2 ys

Education BE or equivalent

Required Skills -                                                               

• 2+ Years of hands-on experience in design, architect, developing and delivering native mobile and cross platform Xamarin.Android, Xamarin.iOS and Xamarin.Forms applications using Xamarin Studio or Microsoft Visual Studio.
• Hands-on experience in design and architect mobile back-end services.
• Strong knowledge in C#.net and SQLite Database with Entity Framework.
• Strong knowledge of MVC Web API’s is an advantage.
• Experience in designing and developing custom controls for Android, Windows and iOS.
• Solid foundation in data structures, algorithms, and object-oriented design.
• Capability to write and execute unit test cases.
• Independent researching, solution finding, analysis and problem-solving skills and capabilities.
• Knowledge on Agile and Scrum approach is a must.
• Should have a strong knowledge of OOPS and intermediate knowledge of front-end GUI design and development.
• Ability to complete all phases of the software development life cycle including analysis, design, functionality, testing and support.
• Must be a team player and self-starter with the ability to communicate clearly.

Hands-on experience in working with Android Studio, Visual Studio & Xamarin.Forms.

Hands-on experience in creating user interface using Xamarin.Forms, Android SDK & iOS SDK for designing UI using XAML with various layouts and controls.

Hands-on experience required on MVVM.​

Hands-on experience in developing Xamarin.Forms Custom Renderers, Data Binding, Effects,Gustures, Sliders, List views, Buttons, Styles, Check boxes, Date Pickers, Webview and Dependency Service.

Need Good Knowledge on data storage options using SQLite Database, Shared Preferences and Content Provider In Xamarin.Forms & Android.

Hands-on experience  in Server integration technologies including web services RESTful APIs.

Need Good Knowledge in integrating Google Play Services, Google Maps API and Google

         Cloud Messaging.

Need Good Knowledge with Push Notification Implementation in Xamarin.Android by Firebase.

Working experience  required on developing  the applications and testing them on Emulators, mobiles and tablets.

Proficient in generating Android .APK & iOS .IPA files deploying to the Playstore and App Store.