Senior/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.

Role: Senior Android Engineer

Work Location: Bangalore-Full time (Work from Office)

Who are we and what do we do?

Digio is a fast growing,profitable product startup founded in 2016 by ex-Flipkart, Twitter folks, playing a key role in India’s Digital story.

The company is building software platforms and products to power business processes, to go paperless and digital in order to bring down cost overheads, time involved in erstwhile offline business processes, thereby being instrumental in increasing operational efficacy and human productivity along with enabling presence-less digital reach and super rich end user experience.

Digio is the market leader in India for Digital onboarding and has played a key role so far in enabling Digital Transformation in India by empowering a large part of the Indian eco-system specifically Fintech sector of India. Digio has been honored as the world's 100 most innovative Regtech companies by the World Fintech Forum.

You can view their website at http://www.digio.in/">https://www.digio.in or find them on Twitter, Facebook, and LinkedIn.

Roles & Responsibilities:

As a Senior Android Engineer at Digio your responsibilities will be:

• Drive Digio SDKs, Libraries, App development in Java, Kotlin and Flutter.
• Take care of performance and security Android level.
• Keep it crash free, modular, perfectly memory managed for mass level usage.
• Usage of Java based REST APIs and backend level developments.
• Drive Android level development as well around available AI, ML and Vision Android libraries.

Requirements:

• Education: B.Tech. (CS/IT) / B.Sc. (CS) / M.Tech. / MCA.
• Experience suitable to above mentioned requirements around Android. IOS experience is plus.
• Experience in creating Android Apps from scratch.
• Experience with Kotlin, Flutter. Experience with Dagger. 
• Experience in dealing with WebViews - Javascript and Native android communications.
• Good low level and High level software design and architecture skills, experience of working with distributed environments.
• Have good understanding on Android and IOS internals and memory management.
• Fast learning abilities.
• 3-5 years of experience and at least 2 years working with product company.

Location : Bengaluru

Experience: 2 - 4 yrs

Semaai is an Agritech startup backed by the top International VCs. We are on a mission to uplift the livelihood and income of 55 million farmers in Indonesia through a highly trusted network of MSMEs(Toko Tanis) and farmer groups.

Agriculture in Indonesia is one of the biggest untapped opportunities in Asia as it is a $100 Billion economy but one of the least digitised sectors even though the country has the fourth-highest mobile user base in the world. We aim to be the first full-stack upstream solution for farmers and Agri SMEs with a focus on inputs, advisories, and Agri finance.

We are building the Engineering Founding Team @Semaai, and looking for members who are enthusiastic, and love a high level of autonomy.

Milestones:

• Launched our first product (Agriculture Input Products Marketplace) in August’21 in 3 weeks
• Onboarded most of the Central Java distributors on our marketplace
• 20% WOW growth in revenue
• 20% WOW growth of active user base

Link to our product:

• Mobile: https://play.google.com/store/apps/details?id=com.semaai.toko

Who we are:

Semaai's co-founders are ex Entrepreneurs, from Goldman Sachs, World Bank, and Schlumberger, with 30 years of rich experience in the technology, agri-business, and development sector in Indonesia and India.

We might be a right fit if you:

• Have 2-4 yrs of experience in Android development
• More than 1 year experience in Kotlin
• Sufficient experience in Problem solving
• Experience and knowledge of MVVM architecture
• Experience with Android UI themes, styles, and attributes
• Understand the Data Structures
• Startup experience is a plus plus

Why should you join:

• We believe increasing the income of farmers and MSMEs will speed up their upward social mobility
• We want to build products that create a positive impact on this truly underserved segment.
• End-to-end ownership — for any given project, we have one person who is responsible. While they don’t necessarily have to do all the work themselves, it’s their job to make sure all the work gets done.
• Bias towards action — we launch betas and prototypes as early as we can. This helps ensure that we’re building what users want.
• Inclusive culture — a core part of our culture is our commitment to building an actively inclusive work environment that makes Semaai an excellent home for everyone.

**We look forward to working with people who have similar beliefs and goals.

What you’ll do:

• Dedication to keeping the highest quality, maintainability, and flexibility in code by strictly adhering to best practices and guidelines
• Architect and build projects using Kotlin for Android
• Take all Android technical decisions on high level and low level design
• Ensure the best possible performance, quality, and responsiveness of the application
• Work with other teams to solve technical problems
• Work with the founders, user research, and product design to understand users and address their needs.
• Collaborate with other developers to set best practices, and standards for development across the organization and help shape a culture of technology-first product building.

Interview Process:

After a technical screening round, we will have two rounds of technical interviews 45 mins each within 72 hours. The first technical interview will be focused on logical reasoning and CS fundamentals, and the second will be on the basics of android and logical reason. If all goes well, we extend the offer within 48 Hours.

What you’ll be doing:

• You’ll design and architect new features on Mobile Application development.
• You’ll be involved all aspects of development, playing a critical role in design, planning, development and deployment.
• You'll Develop robust, quick prototypes for proof-of concept features / application based on briefs.
• You’ll coordinate with all lines of business to delivery an entire piece of a system or application.
• Write clean, simple and well-tested code

Who are you?

You are a team-player who collaborates with developers, designers, testers and product manager to create an amazing user experience. You have experience with all aspects of the production software lifecycle. You have good interpersonal skills and feel comfortable coordinating efforts across teams. You are a fast learner, with an eye for detail, strong problem-solving and debugging skills.

What you’ll bring to the table:

• Your extensive knowledge in Data structures, Algorithms, ORM and Design Patterns.
• You’ll bring extensive experience in mobile development along with the best practices as per language (Android) guidelines.
• Your ability to thrive in complexity and a strong desire to collaborate with colleagues to deliver projects.
• If you have work experience in a Consumer Product/E-Commerce company, we’ll like you even more.

Profile - iOS Developer

Exp- 3+ Years

Company Profile:

Saffron Tech Private Limited

Saffron Tech is a result driven digital transformation company in New Jersey (NJ) &

New Delhi. We are known for transforming businesses to digitisation. We are

providing development services and IT solutions to its clients across the globe. Being

in the field of IT for more than 10 years now, the company has successfully executed

over 1500 projects for its clients. Saffron Tech Pvt Ltd is a multi-faceted IT firm

adept at providing Web and Mobile Application Development, IT Offshore Staffing

and Digital Marketing Services.

We are servicing over 500 clients from across the globe. We are a strong 150+

member family at the moment working from state of the art office premises close to

Saket, South Delhi. Our primary operational markets are USA, UK, APAC and

Middle East. To know more about us and our brands please visit

http://www.saffrontech.net/

Role Purpose:-

 iOS App Design and Development

 Detailed Responsibilities description:-

 Analysis of requirements and specifications

 Understanding of standard specification like Bluetooth® LE and other IoT

standards.

 Analysis of project requirements, estimation of effort required for various tasks.

 Design, Development, Enhancement and Maintenance of iOS App

 Software design including architecture and UI design of iOS App in an Agile

environment.

 Development of iOS App in Swift 5 using XCode for iOS platform.

 Write code suitable for concurrent execution / multi-threaded environment.

 Deep debugging / troubleshooting of iOS Apps both in development and

production environments across Swift.

 Profiling and optimization of iOS applications

 Use crash logs / analytics to find issue on customers’ device.

 Use XCode instruments / other tools to profile software, find bottlenecks.

 Optimization of code, use of appropriate data structure and application of proper

algorithms.Must have skills:

 Good Team Player having ability to work independently with minimal

supervision.

 Hands-on programming knowledge of Swift & Objective-C on iOS platform.

 Basic knowledge of Core Bluetooth (BLE)

 Working knowledge of Core Data

 Extensive experience in using various architectures, frameworks and design

patterns in designing/refactoring highly optimized.

 Good knowledge of C, C++ and objective oriented programming.

 Hands-on knowledge of source control tools like GIT.

 Knowledge of creating frameworks and libraries / SDK on iOS platform.

 Experience in debugging and profiling iOS Apps.

 Understanding of Apple Coding, UI Design and API Guidelines.

 Experience of iOS App submission, distribution and review process.