React Native Engineer

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 the Opportunity

We are seeking a passionate React Native Developer to join our growing mobile development team. This role is ideal for candidates eager to build high-quality cross-platform apps and grow their career in mobile development.

What You Will Do

• Build and deploy cross-platform mobile applications using React Native
• Collaborate with designers and backend developers to deliver features
• Debug, test, and optimize app performance
• Stay updated with mobile development best practices

The Skills You Bring

• Strong knowledge of JavaScript/TypeScript, ReactJS and React Native
• Familiarity with REST APIs and third-party integrations
• Understanding of mobile UI/UX principles
• Problem-solving mindset and willingness to learn

Ideal for candidates who would like to be part of the learning process across growing technologies and embark journey on a tech architect path. Very deep into technologies and eager to learn and adapt with technology advancement.

Essential Responsibilities :

- Study, Design, and prototyping of new technology implementation

- Work in Collaboration with teams

- Work on new technologies and solutions independently.

- Should be able to think out of the box and contribute towards project success

Must Have :

- Build pixel-perfect, smooth UIs across both Android and iOS mobile platforms.

- Leverage native APIs for deep integrations with both platforms.

- Diagnose and fix bugs and performance bottlenecks for performance that feels native

- 3rd party Native SDK integrations

- Maintain versioning on the application and releases

Good to have:

- Knowledge of DevOps

A Product based company is looking out for software engineers in the following categories.
If your profile matches any of the skills&experience categories and you are looking for a change,  Salary won't be a constraint for the right candidate

Category : 0 to 2 years of experience in mobile applications development for android or iOs platforms.

• Work as part of a small team to build React Native iOS, Android & Web (react-native-web) application for Torre Capital.
• Implement pixel perfect UI's that match designs.
• Implement clean, modern, smooth animations and transitions that provide an excellent user experience.
• Integrate third-party API's.
• Write unit and integration tests.
• Participate in sprint retrospectives and daily standups.
• Assist with building estimates.
• Work with tools including Jira, Slack, GitLab & Google Docs.
• Be part of a community of React Native developers who share knowledge and help each other as problems arise.
• Follow FullStack's detailed development process

• 1+ year of professional experience working with React Native.
• 2+ years of professional software development experience.
• Ability to take extreme ownership over your work. Every day is a challenge to ensure you are performing to the expectations you and your team have agreed upon, both in regards to estimates and to the general process.
• An understanding of React Native best practices and a commitment to following them.
• Ability to work through new and difficult React Native issues and contribute to libraries as needed.
• A positive mindset and can-do attitude.
• English Skills (ability to effectively communicate via written and spoken English).
• Ability to consistently work 40 hours per week.

We Anju Siima Technologies Private Limited. are hiring a self motivated React Native Developer urgently. You must have working knowledge of React Native, Redux with API integrations

Responsibilities:

• Design and build mobile applications for Android & iOS platform
• Ensure the performance, quality, and responsiveness of applications
• Collaborate with a team to define, design, and ship new features
• Identify and correct bottlenecks and fix bugs
• Help maintain code quality, organisation and automation

Key Skills:

• React Native, Redux, ReactJS
• Web service integration (SOAP, REST, JSON, XML)
• HTML5, CSS, and JavaScript experience is an added advantage

Expectations:

• Strong fundamentals of programming
• Ability to internalise concepts and create fully functional and user-friendly applications independently
• Ambitious, patient & truly committed to creating excellent mobile applications
• Love for challenges and talking to new people
• Ability to work in teams and communicate effectively
• Ability to learn and grow
• Great attention to detail and lots of energy

Experience:1-3 years of experience developing mobile apps on React Native. Having multiple android/iOS apps in the portfolio is an added advantage.

• Work as part of a small team to build React Native Application for android and IOS
• Architect, build, and maintain excellent React Native applications with clean code.
• Implement pixel perfect UI's that match designs.
• Implement clean, modern, smooth animations and transitions that provide an excellent user experience.
• Integrate third-party API's.
• Write unit and integration tests
• Work as part of a small team, which will include other React Native developers, a project manager, QA professional, and a designer.