Mobile Application Developer | Chennai

What this role is

The market has no shortage of mobile developers who only do mobile, and no shortage of full-stack engineers who have never shipped a production app. This role is neither of those.

You are a Product Engineer whose centre of gravity is mobile. React Native is where you live. You have shipped apps, debugged native integrations, handled platform-specific edge cases, and understand what it actually takes to get something through App Store and Play Store review. That is the non-negotiable foundation.

But at Fountane, Product Engineers build products — not layers. The same feature that lives in a mobile app often has a web surface, an API, a webhook, or a database schema behind it. At L3 you are expected to own the full application surface of what you are building, not hand off the moment the work touches a backend. You will not be doing everything alone — you have a pod. But you will need to be capable of crossing the boundary when the work demands it.

You are joining a permanent Island pod. Your first deployment is to an ongoing client engagement that requires your mobile depth immediately. After that, you are a long-term Islander who will move across engagements as the Mainland deploys you.

What Fountane is actually asking for

We know the market has specialists. We are not pretending this is a standard full-stack role with mobile as a footnote, or a mobile role where full-stack is irrelevant. Mobile is your primary skill. Everything else is your secondary obligation. If you have spent your career going deep on React Native and can hold your own on an API or a web feature when needed, this role fits you.

If you are a pure mobile specialist who cannot — or will not — touch anything outside the app layer, this is not the right fit. Not because we do not respect specialisation, but because Islands do not have room for hard walls between disciplines. The work crosses boundaries. So must you.

What you will own at L3

• React Native application development — the primary mobile codebase, feature delivery, and platform-specific implementation across iOS and Android
• App Store and Play Store release management — build pipelines, submission, review compliance, and versioning
• Native integrations — push notifications, device permissions, biometrics, deep linking, offline-first patterns, and platform SDK integrations where required
• Context Engineering — translating Concept Engineer prototypes and briefs into a clean, scalable mobile architecture using Cursor as your primary execution tool
• API integration and backend contribution — consuming and, where needed, building or modifying the backend services your mobile surfaces depend on
• State management architecture — owning how data flows through the mobile application, not just implementing patterns handed to you
• Cross-platform consistency — ensuring iOS and Android behaviour is intentional and documented, not accidental
• Cursor .cursorrules contribution — maintaining the Island's mobile-specific coding standards and context files so the codebase stays navigable as it grows
• Refactoring and codebase stabilisation — at L3 you are expected to work safely on an existing codebase, not just greenfield. You use Cursor's codebase context to edit and optimise without breaking what already works
• Mentoring L1 and L2 engineers on the Island — reviewing their code, raising the quality bar, and making sure mobile-specific patterns are being applied correctly across the pod

The technology you will be working with

This role is being hired for a specific active engagement. The following is the technology stack in use on this project. If you have not worked with these directly, do not apply.

• React Native — cross-platform mobile, iOS and Android
• TypeScript and JavaScript (ES6+) — the entire codebase is typed
• State management — Zustand and Redux; you need to know both and have an opinion on when to use each
• API integration — RESTful APIs and GraphQL; you will be consuming both
• Push notifications — Firebase Cloud Messaging (FCM) and Amazon SNS
• List rendering and UI performance — FlatList and related React Native optimisation patterns; this is not optional on a project of this scale
• Git — branching, PR reviews, and version control discipline on a team codebase
• iOS and Android platform guidelines — you understand the design and behavioural expectations of both platforms and implement accordingly

Bonus — useful but not required to apply:

• Native Android (Kotlin/Java) or iOS (Swift/Objective-C) experience
• Mobile testing frameworks — Jest, Detox, React Native Testing Library
• CI/CD pipeline experience for mobile applications
• Performance monitoring and analytics tooling

Proof-based qualifications

We do not assess candidates on years of experience or job titles. We assess on proof of capability. When you apply, be prepared to demonstrate the following:

What we look at

What you must show

2–3 shipped apps

Live applications on the App Store and/or Play Store that you built or were a primary engineer on. Provide links or app names in your application. We will look them up. If you cannot name two shipped apps, do not apply.

React Native + TypeScript

A codebase or feature set demonstrating typed React Native development — components, hooks, context API, and state management using Zustand or Redux. Not a tutorial project.

API and backend integration

A feature where your React Native work connected to a RESTful or GraphQL API — ideally one you also built or modified on the backend side. Show us the integration, not just the consumption.

Cursor-driven workflow

Walk us through how you currently use Cursor and Claude in your build process. Not a demo. A real conversation about how AI tooling has changed how you write and debug code.

A CV listing React Native and a GitHub with no shipped apps is not proof. Show us what you have built.

AI tooling at Fountane

Claude and Cursor are the primary tools for thinking, drafting, and executing work at Fountane. Every Product Engineer — including this one — is expected to use Cursor as their main development environment and Claude for context engineering, debugging, and architectural thinking.

This is not a listed skill. It is the working method. If you are not already building with Cursor and Claude integrated into your daily workflow, you will need to get there fast. The Island's velocity depends on it.

Who should not apply

• You have only built mobile apps backed entirely by third-party services (Firebase, Supabase) and have never touched application logic outside the app layer.
• You cannot name two or more applications you have shipped to the App Store or Play Store.
• You treat mobile as a skin over a web app. You have not handled platform-specific native behaviour, device APIs, or cross-platform edge cases.
• You are not using AI tooling in your current workflow and see it as optional.
• You need a clear boundary around mobile and expect the backend work to always belong to someone else.

What comes next

L3 is not a ceiling. The path to Lead PE — Mobile requires demonstrated ability to orchestrate the Island's full application architecture across mobile and backend, define the .cursorrules for the pod, manage Island velocity, and handle client technical conversations without the Lead CE in the room. Promotion is not tenure-based. It is triggered by demonstrated capability at the next level's complexity tier.

About Fountane

Fountane is a technology ventures lab - one part product studio, one part startup engine. We build high-quality software and AI products for clients ranging from fast-moving startups to large enterprises, and we co-build and invest in new companies when we see the right opportunity.

Founded in 2017 and headquartered in Minneapolis, we have grown to 60+ people across four continents and were recognised as one of America’s fastest-growing companies, ranking No. 699 on the Inc. 5000 with 595% three-year growth.

We are radically open-minded, serious about craft, and direct about expectations. If you want to do meaningful work without politics, this is the place.

Job Description :

1. 3+ years of professional experience working with React Native

2. Familiarity with TypeScript and JavaScript Ecosystems and tooling.

3. Experience working on large, complex systems.

4. Understanding of React Native best practices

5. Ability to create and maintain continuous integration and delivery of React Native applications

6. Knowledge of Integrating with third-party API's

7. Write unit and integration tests

8. Release applications to the Apple and Google Play stores

9. Work with native modules when required & follow the process using Source control.

10. Implement pixel perfect UI's that match the provided designs

11. Architect, build and maintain excellent React Native applications with clean code and best practices

Openings: 2

Experience :

- 3 to 4 years

- 4 to 5 years

Tech Stack / Requirements:

1. Experience required: 1 - 2 yrs atleast
2. Candidates must be from an IT Engineering background (B.E./B.Tech in Information Technology, Computer Science, or related fields), B.Sc. IT, BCA or related fields.
3. Strong understanding of JavaScript
4. Experience with React Native / Expo
5. Familiarity with SQL
6. Exposure to REST APIs integration
7. Fast learner with strong problem-solving & debugging skills

Responsibilities:

1. Build & improve mobile app features using React Native / Expo
2. Develop and maintain web features using React.js / Next.js
3. Integrate APIs and ensure seamless user experiences across platforms
4. Collaborate with backend & design teams for end-to-end development
5. Debug & optimize performance across mobile and web
6. Write clean, maintainable code and ship to production regularly

Work closely with the founding team / CTO and contribute to product launches

Growth: Performance-based growth with significant hikes possible in the same or upcoming months.

Job description – Mobile App Frontend Developer

vani.coach is an award-winning high-growth product company with a mission of upskilling the communication skills of its 140 million workforce in this decade.

Trusted by large enterprises like L&T, Asian Paints, Cipla, PwC, etc. to upskill their people, Team Vani has a solid track record in delivering learning outcomes that deliver business results, leading to 100% repeat sign-ups. With a proven product-market fit, we have now switched to growth mode, and we are now building our product team.

• 3-6 years of proven and progressive experience in UI development.
• Experience in JavaScript, React Native, and GraphQL. Experience in making hybrid mobile apps. The native experience on Android and iOS will be an add-on. Clean coding and design patterns are desirable. A perfect applicant will be skilled in React Native and JavaScript.
• A grasp of database technologies like PostgreSQL, Python, etc. would be an added bonus.

What makes you a great fit?

• 3–6 years of React Native development experience.
• Experience in React Native, Javascript, and CSS3.
• Familiarity with mobile development concepts, including performance optimisation, device compatibility, and user experience design.
• Great OO skills, including strong design pattern knowledge.
• Experience in any backend is an added advantage (optional).
• Proficient understanding of code versioning tools such as Git.
• Good knowledge of client-server architecture and strong design principles.
• Solid understanding of Core JavaScript principles.
• Experience working with video/audio recording on mobile devices would be preferred.
• Working knowledge of the version control systems Git and SVN.
• Personal track record of process improvement or reengineering.
• Should be able to work independently.
• Should be able to debug the root cause of issues or bugs and their impacts.
• Strong analytical and problem-solving skills.
• Strong interpersonal, written, and verbal communication skills.

What You'll do

• Recommend the best possible way to solve a tech problem and come up with ETAs
• Able to multitask, prioritize, and take critical decisions.
• Provides input for system architectures and designs.
• Define a checklist for code reviews and unit tests.
• Ensure that functional requirements are correctly interpreted and translated into clear and robust code
• Enthusiastic to work collaboratively with people and share your ideas to solve real business problems.
• Collaborates and communicates with internal and outsourced development partners regarding software application design status, project progress, and issue resolution.
• More experienced candidates should be able to lead multiple projects with a sense of ownership.
• Strong analytical and problem-solving skills.
• Self-motivated, a team player, and the ability to work in small groups.

Educational Qualification:

B.E., MTech, BCA, MCA. Candidates holding degrees

Roles & Responsibilities

• Capability to develop highly responsive applications and websites.
• Capability to find and fix bugs.
• Enhance the performance of an application close to a native one by removing the constriction.
• Capability to maintain code that is easy to understand.
• Write tests for automation so that the app can be tested easily.
• Capability to take advantage of native APIs for deep integration of all platforms.
• Capability to completely transcend a React Web App into a React Native one.

Skills

• Knowledge of Object-Oriented Programming.
• Complete familiarity with Javascript and capability to write script that is optimised and works perfectly.
• Capability to write Well-documented code with Javascript that is easily readable.
• Having the knowledge of third-party dependencies and debugging dependency conflicts that might occur.
• Understanding of native build tools like Xcode, Gradle etc.
• Experience in testing with tools like Jest, Detox, Cypress etc.
• Knowledge about Offline Storage, REST APIs, and document request model.

Why FabHotels? Budget hotels is the largest and fastest growing segment of the Indian travel market. Despite attracting billions of dollars in last few years, online penetration in hotel bookings is still sub-20%. Supply of budget hotels is fragmented and lacks any brand of scale. At FabHotels, we’re building a millennial traveler focused budget hotel brand that leverages people, technology and processes in an asset-light, scalable model to deliver delight to consumers and segment-leading returns to asset owners. In ~4 years since inception, we have become larger than many established traditional hotel chains. Currently we have a fast growing network of 550+ hotels and 11,000+ rooms across ~50 cities pan-India.

Who? Founded by Bain & Wharton alumni, Vaibhav Aggarwal & Adarsh Manpuria,

FabHotels has raised >$35Mn. till date from leading VC firms Goldman Sachs, Accel Partners, Qualcomm Ventures. We're always looking for young, hungry & self-driven individuals, who want more than a 10-7 desk job and to make a significant contribution in creating a first-in-class Indian hospitality brand.

About the role: One key differentiator of FabHotels brand for our asset partners is bestin-class returns. While our online & offline demand teams drive higher occupancies for our partners, this role entails ownership of developing and work on react native side of application development.

Key responsibilities:

• Knows how to embed React-Native in a native (iOS/Android) component and vice versa.
• Firm grasp on JS/CSS fundamentals
• Build pixel-perfect, battery smooth UIs ((layouts, animations, etc.))across both mobile platforms
• Good understanding of Design and Architecture Patterns
• Strong focus on app performance
• Familiarity with native build tools, like XCode, Grade, Android Studio
• Good at working with third party libraries and debugging dependency conflicts
• Experience in unit testing is preferable.

Individuals who would connect best with the job requirements are those who:

• Are excited to be part of a young, dynamic team that is building a disruptive, sustainable business
• Are willing to go the extra 100 miles it takes to win in a super competitive market
• Are innovative, resourceful and comfortable with dynamic business requirements
• Fulfil below minimum criteria:

- 4+ years experience in Mobile app development.   

- Must have published at least 1 major React-Native app

- Experience with CodePush (appcenter)

- Hands on experience in Redux