Senior React Native Developer

ESP Engineered; Bengaluru; On-site; INR 1,800,000 - 2,500,000; Full time

Job summary

ESP Engineered is seeking a Senior / Lead React Native Developer in Bengaluru, India. This role involves leading engineering efforts and building scalable mobile applications. The ideal candidate has 8–10 years of frontend/mobile development experience, including 4–6 years with React Native. Key responsibilities include optimizing applications, collaborating with cross-functional teams, and implementing real-time data updates. Strong problem-solving, communication, and leadership skills are essential for this fast-paced environment.

Qualifications

• 8–10+ years in frontend/mobile development.
• 4–6+ years with React Native.
• Deep understanding of modern frontend practices.
• Strong React Native internals knowledge.
• Android & iOS debugging experience.
• Experience building production-grade apps.

Responsibilities

• Lead the React Native engineering efforts.
• Design, develop, and maintain high-quality mobile applications.
• Ensure applications are optimized for performance.
• Collaborate with product, design, and backend teams.
• Implement systems for real-time data updates.

Skills

Frontend/mobile development

React Native

Memory optimization

Rendering optimization

Networking

Problem-solving

Leadership

Tools

Git

CI/CD pipelines

Automated testing

Job description

Job Title: Senior / Lead React Native Developer

Experience: 8–10 Years

Employment Type: Full-time

About Nubra

Nubra is an all-in-one trading platform designed for modern traders—from stock scalpers to options strategists. It brings together powerful tools like advanced option chain, multi-leg strategy builder, chart-led execution, real-time market data, and smart alerts into a single seamless experience.

With features such as API access, automated Flexi orders, tick-level data, and institutional-grade charts, Nubra enables users to analyse, build, and execute trading strategies efficiently in real time.

Built for performance and scale, Nubra focuses on delivering low-latency, reliable, and data-driven trading experiences.

Role Summary

You will lead the React Native engineering efforts, drive architecture decisions, and build high-performance, scalable mobile applications used by large-scale user bases.

Key Responsibilities

• Design, develop, and maintain high-quality mobile applications using React Native
• Write clean, modular, and scalable code
• Ensure applications are optimized for performance, responsiveness, and reliability
• Collaborate with product, design, and backend teams to deliver features end-to-end

Performance Engineering

• Optimize React Native applications for high performance at scale
• Identify and resolve memory leaks, UI lag, frame drops, and rendering issues
• Improve application startup time and runtime performance
• Optimize JS thread, UI thread, and native bridge interactions
• Debug using tools such as Android Studio Profiler, Xcode Instruments, React Native tools, and Flipper

Real-Time Data & Networking

• Implement systems for real-time data updates
• Work with WebSockets, gRPC, REST APIs, and streaming systems
• Handle high-frequency data updates efficiently

Architecture & Engineering Practices

• Define and enforce coding standards and best practices
• Work with Redux, Zustand, MobX
• Ensure code quality, testing, and maintainability

Native Integration

• Work across Android and iOS platforms
• Integrate native modules using Kotlin/Java and Swift/Objective-C
• Experience with React Native New Architecture (TurboModules, JSI, Fabric)
• Build pixel-perfect, responsive interfaces
• Optimize complex UI components and animations
• Work with Reanimated and Gesture Handler
• Lead and mentor developers
• Conduct code reviews and design discussions
• Drive technical roadmap and architecture decisions
• Solve complex engineering challenges

Required Skills

Core

• 8–10+ years in frontend/mobile development
• 4–6+ years with React Native
• Deep understanding of modern frontend practices
• Strong React Native internals knowledge
• Android & iOS debugging experience
• Experience building production-grade apps

Performance

• Knowledge of memory, rendering, and network optimizationExperience with profiling tools

Networking

WebSockets, gRPC, REST APIs, streaming architectures

Tools

Git, CI/CD pipelines, code quality tools, automated testing

Good to Have

• Experience in fintech, trading, or real-time data applications
• Experience with protobuf or binary protocols
• Knowledge of mobile security best practices

What We’re Looking For

• Strong problem-solving ability
• Excellent communication and leadership skills
• Ability to thrive in fast-paced environments