
About the Role
We are looking for a Senior Android Engineer with deep React Native expertise to build and own the trading
experience on Android — real-time data, interactive charting, fluid interactions, and rock-solid performance. What We’re Looking For
You have shipped production React Native apps that handle real-time data streams, complex UI states, and
performance-sensitive rendering. You understand the Android platform deeply — native modules, bridge
performance, and platform-specific behaviour. Ideally, you have worked on trading, fintech, or data-intensive
mobile products. You take ownership of your features end-to-end, care about code quality, and are comfortable
driving technical decisions independently. What You’ll Do
• Own the mobile trading experience on Android — architecture, performance, and end-to-end quality. • Build and optimize real-time data rendering — WebSocket lifecycle management, efficient list rendering, and minimal re-renders for streaming data. • Integrate complex WebView-based components with bidirectional JavaScript bridge communication. • Collaborate with product and design to deliver polished, intuitive interfaces for a financial product where
trust and clarity are paramount. • Define mobile engineering standards — component architecture, state management patterns, testing
strategy, and performance benchmarks. • Drive code reviews, mentor team members, and champion best practices across the mobile team. • Participate in stabilization and release cycles — profiling, device matrix testing, and regression analysis. Must-Have
• 4+ years React Native experience with production apps on Google Play Store. • Strong TypeScript skills and deep understanding of React Native internals — bridge, native modules, and
performance optimization. • Experience with real-time data handling — WebSockets, efficient UI updates for streaming data, and
state synchronization. • Experience integrating WebView-based components with JS bridge communication. • Proficiency with state management at scale (Redux, Zustand, or MobX).
• Experience with push notifications (FCM), deep linking, and complex navigation patterns. • Strong debugging skills — Flipper, React DevTools, native crash analysis, and performance profiling. Nice-to-Have
• Prior experience building trading, brokerage, or fintech mobile apps. • Experience with charting library integration in mobile apps. • Knowledge of server-driven UI (SDUI) patterns. • Experience with feature flags, A/B testing frameworks, and app modularization. • Familiarity with native Android development (Kotlin) for bridge modules. Tech Stack
Framework React Native
Language TypeScript / JavaScript
State Management Redux / Zustand
Real-time WebSocket, SSE
Charting Charting library via WebView bridge
Testing Jest, Detox (E2E), device matrix testing (Android 10+)

About sketch brahma
About
Connect with the team
Similar jobs
Job Title : React Native Developer
Experience : 3+ Years
Location : Gurgaon
Working Days : 6 Days (Monday to Saturday)
Job Summary :
We are looking for a skilled React Native Developer with experience in converting Figma designs into high-performance mobile applications.
The ideal candidate should have some exposure to Blockchain/Web3 technologies and be capable of converting mobile applications into SDKs.
Key Responsibilities :
✅ Develop and maintain React Native applications.
✅ Convert Figma designs into pixel-perfect UI.
✅ Optimize app performance and ensure smooth user experience.
✅ Work with Blockchain/Web3 integrations (preferred).
✅ Convert mobile applications into SDKs for seamless integration.
✅ Collaborate with designers, backend developers, and blockchain engineers.
Technical Skills :
🔹 Strong proficiency in React Native, JavaScript, TypeScript.
🔹 Experience with Redux, Context API, Hooks.
🔹 Familiarity with Blockchain/Web3 (Ethereum, Solidity, Wallet integrations).
🔹 Understanding of mobile SDK development.
🔹 Knowledge of REST APIs, GraphQL, and third-party integrations.
Job Description:
We are looking for a skilled React Native Developer to design, develop, and maintain high-performance cross-platform mobile applications for Android and iOS.
The ideal candidate must have strong command over React Native, TypeScript/JavaScript, and working knowledge of Kotlin (Android) or Swift (iOS) to build and integrate native modules when needed.
You will work closely with backend, design, and product teams to deliver seamless, fast, and stable mobile experiences for the ZestFindz ecosystem.
Key Responsibilities:
- Develop and maintain cross-platform mobile applications using React Native.
- Collaborate with design and product teams to deliver pixel-perfect, responsive UIs.
- Integrate REST APIs / GraphQL and handle authentication, caching, and error states efficiently.
- Implement and manage app state using Redux.
- Optimize app performance, handle animations, memory leaks, and rendering issues.
- Manage offline storage using SQLite / AsyncStorage / MMKV.
- Configure and manage Firebase services - Auth, Firestore, Push Notifications, Analytics.
- Handle deep linking, in-app navigation, and app lifecycle events.
- Deploy apps to Google Play Store and Apple App Store (with signing, provisioning, versioning).
- Work with DevOps to integrate apps into CI/CD pipelines (Fastlane / GitHub Actions / Codemagic).
- Write clean, modular, reusable code with proper documentation and testing.
- Debug, profile, and optimize performance for low-end devices and weak networks.
- Ensure security best practices - secure token storage, environment management, and data encryption.
Must-Have Skills:
- Strong experience in React Native (0.70+) and TypeScript.
- Experience with React Navigation, Redux and API integration (Axios / Fetch).
- Familiarity with Firebase, App Permissions, and Push Notifications (FCM/APNS).
- Understanding of Android Studio, Xcode, Gradle, and Cocoapods.
- Ability to write clean, testable code with unit and integration tests.
- Working experience with Git / GitHub / GitLab CI/CD.
- Problem-solving mindset and ability to debug across full mobile stack.
Good-to-Have Skills (Bonus):
- Knowledge of native SDK integrations (Maps, Camera, Payments, etc.).
- Experience with React Query / GraphQL.
- Familiarity with Fastlane, Crashlytics, App Center, or Sentry.
- Understanding of UX principles and animation libraries (Lottie, Reanimated).
- Experience with OTA updates (CodePush) and App Store Optimization (ASO).
Job Requirements :
- Candidate should have 2-5 years of regular working experience.
- Must have expertise in React js, Redux, MongoDB, MySql, NoSQL.
- Must have done multiple projects using React js, Redux, with Cross browser/device compatibility.
- Good knowledge of events handling in client-side and server-side.
- Good knowledge of code versioning tools, such as Git/bitbucket
- Good logical and mathematical programming skills.
Here are the skills we are looking for
1. experienced in mobile development using react native framework should be proficient in
2. must be fluent in java script(and typescript) and its nuances including ES6+ syntax.
3. deep understanding of how to optimize react native apps for iOS and android, including offline storage, threading ,and programming concepts.
4. strong understanding in object-oriented programming concepts.
5. experience integrating third party libraries and APIs.
- Understanding of cross-platform design principles.
- 2+ years of mobile software development experience. 1+ years of iOS and Android development experience with React Native.
- Good Experience in JavaScript, Typescript and React Native, strong familiarity with native mobile application development either Android or iOS.
- Solid understanding of mobile development concepts; APIs consumption, power optimization, user interaction design, application security.
- Coding for the mobile environment, experience integrating third-party SDKs into apps.
- Application lifecycle management with both Apple App Store and Google Play store.
- Superior critical thinking, analytical, evaluation, and problem-solving skills.
- Self-directed and proactive, work collaboratively with team members and independently; thinks beyond the immediate problem.
- Experience using Flutter and Firebase
- Experience using mobile testing frameworks and methodologies
- Familiarity with Material UI (or similar)
- Familiarity with UX testing and user research
app is built on React Native platform with a common codebase for iOS and android. The
role requires developers to be comfortable with bleeding edge technology and be able to
work in a fast-paced environment.
Responsibility:
Learning React-Native platform and able to develop features and debug. Understand product
requirements and owning execution of application features on the app.
Experience Range:
Minimum 2 -years experience of developing native iOS/Android consumer facing application
with minimum of 10 thousand downloads.
Skill Sets:
● Fluent with usage of instrumentation and debugging tools on respective platforms
(iOS/Android).
● Excellent understanding of software design and object-oriented programming principles.
● Experience on React-Native/React, Redux is a plus.
We are looking for a React Native developers between 1 to 3years of experience 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.
Responsibilities
- Build pixel-perfect, buttery smooth UIs across both mobile platforms.
- Leverage native APIs for deep integrations with both platforms.
- Diagnose and fix bugs and performance bottlenecks for performance that feels native.
- Reach out to the open source community to encourage and help implement mission-critical software fixes—React Native moves fast and often breaks things.
- Maintain code and write automated tests to ensure the product is of the highest quality.
- Transition existing React web apps to React Native.
- Build pixel-perfect, buttery smooth UIs across both mobile platforms
- Strong knowledge of React workflows (such as Flux or Redux)
- Implement clean, modern, smooth animations and transitions that provide an excellent user
experience
- Integrate third-party APIs
- Release applications to IOS and Google Play stores.
- Ability to work through new and difficult React Native issues and contribute to libraries as
needed.
- Ability to create and maintain continuous integration and delivery of React Native applications.
- Experience with code optimization and performance improvements
- Experience in Mongo DB, Node JS, AWS is a plus
- Strong knowledge of GIT
Required Skills:
-Database - NoSQL (MongoDB), Restful, Express.JS, React.JS and Node.JS
We are looking to hire a React Native Mobile App Developer for a Singapore based Fintech startup. A joint venture of Singapore Stock Exchange and Temasek an investment company has recently acquired a minority stake in the company. Candidates must have a strong understanding of end-to-end flows encompassing front-end, application server, APIs and databases. The candidates must possess strong programming skills.
Requirements:
- Has demonstrable experience in building mobile apps for iOS and Android using React Native.
- The candidate must have at least 2 years of relevant experience in mobile app development.
- Detail-orientation and appreciation of usability, design and aesthetic elements is a must.
- Overall experience of 3-8 years, with relevant educational background or certifications.











