Staff Engineer (Mobile Cross Platform-React Native)

Role & Responsibilities:

Design and develop mobile applications using React Native.

Collaborate with cross-functional teams to define, design, and ship new features.

Ensure performance, quality, and responsiveness of applications.

Debug and fix issues, improve application performance, and maintain code quality.

Work onsite with the client team in Trichy.

Requirements:

Minimum 2 years of hands-on experience in React Native mobile app development.

Strong knowledge of JavaScript/TypeScript and mobile UI/UX principles.

Experience with REST APIs, third-party libraries, and integration.

Ability to work independently and in a team environment.

Immediate availability preferred.

📢 Hiring: React Native (Mobile Application Developer )

📍 Location: Onsite – Trichy

🕒 Experience: 2+ Years

📄 Type: Contract (Immediate Joiners Preferred)

Role & Responsibilities:

Design and develop mobile applications using React Native.

Collaborate with cross-functional teams to define, design, and ship new features.

Ensure performance, quality, and responsiveness of applications.

Debug and fix issues, improve application performance, and maintain code quality.

Work onsite with the client team in Trichy.

Requirements:

Minimum 2 years of hands-on experience in React Native mobile app development.

Strong knowledge of JavaScript/TypeScript and mobile UI/UX principles.

Experience with REST APIs, third-party libraries, and integration.

Ability to work independently and in a team environment.

Immediate availability preferred.

Key Responsibilities

• Develop, maintain, and enhance cross-platform mobile applications for Android and iOS using React Native.
• Build responsive, user-friendly mobile interfaces with a strong focus on performance and usability.
• Integrate mobile applications with REST APIs and backend services.
• Work with React Native WebView to integrate web-based functionality into mobile applications.
• Implement navigation, state management, push notifications, deep linking, and other mobile app features.
• Debug, troubleshoot, and optimize applications for performance, stability, and reliability.
• Integrate third-party SDKs, libraries, and services into mobile applications.
• Work with native Android and iOS configurations when required.
• Manage app builds, releases, and deployments to the Google Play Store and Apple App Store.
• Collaborate with designers, backend developers, and the product team to deliver high-quality features.
• Write clean, reusable, and maintainable code while following development best practices.
• Participate in code reviews, testing, and continuous improvement of mobile applications.

Must-Have Qualifications

• Hands-on experience with React Native and mobile application development.
• Strong understanding of JavaScript, ES6+, and React fundamentals.
• Good knowledge of React Hooks, functional components, and state management.
• Experience integrating REST APIs and handling asynchronous operations.
• Familiarity with mobile navigation, app lifecycle, and platform-specific behavior on Android and iOS.
• Experience with Git and version control workflows.
• Understanding of responsive layouts, and mobile UI development.
• Knowledge of debugging, performance optimization, and error handling.
• Ability to troubleshoot issues independently and deliver reliable solutions.

Good-to-Have Qualifications

• Experience with TypeScript.
• Familiarity with React Native WebView and hybrid mobile applications.
• Experience with push notifications using Firebase Cloud Messaging or similar services.
• Knowledge of native Android development using Java/Kotlin or iOS development using Swift.
• Experience with Fastlane, CI/CD pipelines, and automated mobile app builds.
• Familiarity with publishing and maintaining apps on the Google Play Store and Apple App Store.
• Experience with Firebase, analytics, and third-party SDK integrations.
• Knowledge of Node.js and backend API development.

Soft Skills

• Strong problem-solving skills and attention to detail.
• Ability to learn new technologies and adapt to changing requirements.
• Good communication and collaboration skills.
• A proactive attitude with a willingness to take ownership of tasks.
• Ability to work effectively in a fast-paced startup environment.
• Passion for building high-quality mobile applications and improving user experiences.

Why Join Toolstr?

• Work with a fast-growing startup building products for the global Shopify ecosystem.
• Get hands-on experience building and shipping real-world mobile applications.
• Work on challenging technical problems across Android, iOS, and web technologies.
• Learn, grow, and take ownership of features from development to release.
• Be part of a collaborative team that values innovation, initiative, and continuous learning.

About the role

You'll own React Native development at the company. You'll lead our mobile app from architecture through to App Store and Play Store releases, and you'll mentor a Junior React Native Developer. You'll work closely with the Backend team on APIs and integrations, so clear communication across teams is essential.

What you'll do

• Own the architecture, code quality and technical direction of our React Native (Expo) apps.
• Build and maintain high-quality, performant features for iOS and Android.
• Manage the full release cycle: builds, signing, versioning, OTA updates, store submissions, and handling review feedback.
• Work with the Backend team to define API contracts, data needs and integration approaches.
• Mentor the Junior React Native Developer through code reviews, pairing and guidance along with the TPM.
• Work with Design to turn designs into polished mobile experiences.
• Take part in the senior on-call rotation, including international paging.

What we're looking for

• 6+ years of mobile development, with 3+ years of hands-on React Native work.
• Strong TypeScript/JavaScript and solid knowledge of React.
• Proven experience shipping and maintaining apps on both the Apple App Store and Google Play Store.
• Experience with Expo and EAS (Expo Application Services), native modules, push notifications, deep linking, and performance tuning.
• Solid understanding of REST/GraphQL APIs, authentication and state management.
• Experience leading or mentoring other developers.
• Excellent communication skills. You should be able to discuss requirements and trade-offs clearly with backend, web and design teams.
• Experience working with AI tools for development, and a willingness to integrate AI into the SDLC

Note: Full-stack experience is a strong plus but not mandatory. If you're an excellent mobile specialist who works well with backend engineers, we want to hear from you.

Nice to have

• Backend experience with Django.
• Experience with Next.js or sharing code between web and mobile.
• Experience with app analytics and crash monitoring tools (for example Sentry or PostHog).

Experience and Required Skill Sets: 

1      Solid experience in software design and development using Microsoft ASP.NET framework, C#, Visual Studio, and in writing clean, readable, and easily maintainable code

2      5+ years of experience in WCF, WPF, VB.NET, SQL Server, JQuery, Angular 10 and above.

3      5+ years of experience in developing highly scalable REST/Web APIs

4      5+ years of experience in developing highly efficient SQL/NoSQL Queries

5      5+ years of experience in Relational and Document databases

6      Strong understanding of object-oriented programming and possess strong fundamental design principles for building a scalable application.

7      Experience in using the MVC framework, working knowledge in APIs, and Service Oriented Architecture

8      Strong understanding of object-oriented programming and possess strong fundamental design principles for building a scalable application.

9      Experience in Angular version 10 and above is required 

10   Expert in SQL programming & Database Design (Stored procedure, Function, Trigger, Constraints, Replication) 

11   Strong ability in HTML and JavaScript (AJAX, DOM)

12   Development experience with data integration technologies including REST, SOAP, JSON, XML

13   Expertise in programming and usage of any unit testing framework. Expertise in integration testing and continuous integration.

14   Experience working in a DevOps environment will be an added advantage.

Responsibilities: 

•       Ability to create complex, enterprise-transforming applications that meet and exceed client expectations. 

•       Responsible for the bottom line. Strong project management abilities. Ability to encourage the team to stick to timelines.

•       Follow best-in-class coding practices and review the solutions vis-à-vis the requirements and technical specifications.

•       Should demonstrate strong client interfacing capabilities like emails and calls with clients in the US/UK

Technical Skills

• 1. 4 years developing Reactive Native Front End App Experiences using React Native and the Expo Framework with core understanding of JavaScript Bridge (JSI) and the rest 4 building Front End App Experience
• Brownfield Experience
• 2. Deep proficiency in JavaScript and TypeScript (highly preferred), including modern ES6+ concepts
• 3. Strong command of React Principles, React Hooks, Context API, and Component lifecycles
• 4. Knowledge of how to use Component Libraries to build applications
• 5. Hands-on experience with the latest Expo SDKs, Expo Router (file-based routing), and EAS workflows
• 6. Should understand concepts around caching and how to achieve the same
• 7. Proven experience with state management libraries such as Zustand, Redux Toolkit, or MobX
• 8. Deep understanding of iOS and Android deployment Lifecycles, application
• signing, and app store guidelines
• 9. Deep skills of Git, GitHub, and continuous integration pipelines
• 10. Proficient in using Agentic AI to leverage spec, skills and agents to do 50% of their
• work across development, documentation and testing

About the role

You'll join our React Native team and work under a Senior React Native Developer to build and ship features for our iOS and Android apps. You'll also work with the Backend team on API integrations. This is a good role for someone who wants to grow quickly in mobile development.

What you'll do

• Build mobile app features and UI components in React Native (Expo).
• Integrate backend APIs into the mobile app with guidance from the senior developer and the Backend team.
• Fix bugs, write tests and improve app performance and stability.
• Help with builds and releases to the App Store and Play Store.
• Take part in code reviews, standups and sprint planning.

What we're looking for

• 1–3 years of experience with React Native (internships and solid personal projects count).
• Good knowledge of JavaScript/TypeScript and React fundamentals.
• Basic understanding of REST APIs, JSON and how frontends talk to backends.
• Eagerness to learn and openness to feedback.
• Clear communication. You should be comfortable asking questions and working with backend and design teammates.
• Experience working with AI tools for development such as Claude and Cursor

Note: You don't need to be full stack. A basic understanding of backend concepts and the willingness to work with the Backend team is enough.

Nice to have

• A published app or personal project on the App Store or Play Store.
• Exposure to Expo, Git workflows and mobile debugging tools.

Where You’ll Create Impact

·         Build & Ship: Architect, build, and deploy production-grade iOS and Android features using React Native + TypeScript from scratch to store release.

·         Pipeline Ownership: Own the full release lifecycle using Expo + EAS, managing App Store/Play Store submissions, provisioning, and CI/CD.

·         Craftsmanship: Turn complex Figma designs into ultra-fast, polished components with fluid animations, backed by clean API integrations and rock-solid performance.

·         Systems Thinking: Scale mobile infrastructure to handle heavy data flows, offline sync, and real-time enterprise AI features seamlessly.

What Sets You Up for Success

·         5+ years of hardcore mobile engineering experience (Android/iOS foundation, ideally within high-growth, high-intensity startups).

·         Outlier Agency: High-integrity work ethic, extreme initiative, and zero need for hand-holding.

·         Performance Obsession: Track record of shipping silky-smooth, high-performance apps with complex UI, animations, and tight memory management.

·         Release Mastery: Deep comfort with Figma-to-code workflows and navigating the entire release cycle from local IDE to live store deployments.

·         Quality Mindset: Hands-on experience with unit testing, end-to-end QA pipelines, and production monitoring.

Technical Project and Delivery Manager

Permanent full-time | Remote | One opening

Required joining date: on or before December 1, 2026.

Own day-to-day execution across our mobile, frontend, and backend/data teams. This is a non-coding role working closely with the technical lead, who retains ownership of technical direction.

Responsibilities

• Translate project priorities into clear tasks, owners, milestones, and delivery plans.
• Allocate team capacity, coordinate dependencies, and track progress across development and design.
• Identify delivery risks early, resolve blockers with the technical lead, and communicate decisions and trade-offs.
• Coordinate testing, release readiness, and mobile app store submissions with the engineering team.
• Maintain clear status updates and improve planning, handoffs, and follow-through in a remote team.

Essential skills and experience

• Experience managing software delivery across multiple developers and technical workstreams.
• Strong technical understanding of React Native, iOS and Android release processes, Next.js, and backend/API integrations.
• Ability to break down work, prioritize competing needs, and manage dependencies without daily founder intervention.
• Clear written communication, stakeholder coordination, and practical experience using project tracking tools.

Preferred experience

Experience coordinating mobile and web releases, working with distributed teams, and improving delivery processes in a growing team.

Application details

Share your CV, current location, expected compensation, notice period, and earliest confirmed joining date. Please also include a brief example of a software project you managed, including team size, your responsibilities, and how you handled a delivery risk.

About the Role

We are looking for a Junior React Native Developer with 1–2 years of hands-on experience in developing mobile applications using React Native for both Android and iOS platforms.

The ideal candidate should have strong fundamentals in React Native and JavaScript/TypeScript, along with exposure to AI/ML technologies and AI-assisted development tools such as Claude, Cursor, GitHub Copilot, ChatGPT, or similar tools.

This is a Junior-level role for someone who is eager to build mobile applications, learn new technologies, and work on AI-enabled features.

Key Responsibilities

• Develop, maintain, and enhance cross-platform mobile applications using React Native.
• Build and support applications for both Android and iOS platforms.
• Develop reusable, scalable, and user-friendly mobile UI components.
• Integrate REST APIs, third-party APIs, SDKs, and backend services.
• Debug and troubleshoot applications across Android and iOS devices.
• Assist with application testing, performance optimization, and bug fixing.
• Assist in integrating AI/ML or GenAI-powered features into mobile applications.
• Use AI-assisted development tools such as Claude, Cursor, GitHub Copilot, ChatGPT, or similar tools for development, debugging, code generation, and problem-solving.
• Collaborate with the development team to understand requirements and deliver features.
• Participate in code reviews and follow development best practices.

Required Skills

• 1–2 years of hands-on experience with React Native.
• Good hands on experience with JavaScript / TypeScript.
• Understanding of React Native components, hooks, navigation, and state management.
• Experience with REST APIs, JSON, and API integration.
• Exposure to Android and iOS application development.
• Familiarity with Android Studio and Xcode.
• Experience with mobile application debugging and testing.
• Exposure to AI/ML, GenAI, AI APIs, or AI-powered application features.
• Familiarity with AI-assisted development tools such as Claude, Cursor, GitHub Copilot, ChatGPT, or similar tools.
• Good problem-solving and communication skills.

Educational Qualification

B.Tech / B.E. in CSE, IT, or AI/ML only.

Preferred Qualifications

• Candidates currently based in Hyderabad are preferred.
• Immediate Joiners or candidates with a short notice period are preferred.
• Exposure to AI/ML or GenAI projects is an advantage.
• Experience integrating AI APIs into mobile applications is a plus.
• Knowledge of Git/GitHub and basic CI/CD concepts is preferred.
• Experience with Google Play Store / Apple App Store deployment is an added advantage.

Work Location

Gachibowli, Hyderabad

Note: This is a Junior React Native Developer position. Candidates with 1–2 years of relevant React Native experience, Android/iOS exposure, and AI/ML exposure are encouraged to apply.