UI Developer(EXT JS,Javascript)

About the Product

We build a spiritual wellness app, live on iOS and Android, with a growing base of paying subscribers. It pairs guided content with narrated audio and short daily practices. Small team, real users, no bureaucracy.

We're hiring one developer for a focused three months: clear the maintenance backlog, and roll the app out in seven new languages.

The Role

Two mandates, both hands-on. You write the code, you ship it, you watch it in production. You'll work directly with the founder — short feedback loops, decisions in hours not weeks.

1. Stability and backlog

Bug fixes, crash triage, performance, offline and audio playback reliability, dependency and OS-version upgrades. Own the release process end to end: builds, TestFlight, App Store and Play Store submissions, review responses, staged rollouts. Maintain in-app subscriptions and paywalls — entitlements, restore flows, edge cases.

2. Language expansion — seven languages

We supply the translated content ourselves. The full content corpus is already translated (or in progress) in-house. You are not doing translation work. You are building the system that serves it.

Target languages: Spanish, French, Italian, German, Russian, Portuguese, Hebrew.

That means:

• The i18n layer — string externalization, keys, pluralization, locale detection and switching, date/number formats
• Handling text expansion — German and Russian run 30%+ longer than English and will break layouts that were designed for English. Finding and fixing those is a real part of the job.
• The content pipeline — per-locale content queries and graceful fallback when a story or audio file isn't yet available in a language
• Localized audio — multiple voice tracks per locale, caching, fallback
• Per-market store listings, screenshots, metadata, and regional pricing tiers
• Making it possible to add a new language without a code change
• Hebrew is right-to-left. It ships last. RTL experience is a plus, not a requirement — but you should be comfortable learning it and using React Native's built-in RTL support.

Milestones

Scope is milestone-gated, not hours-based.

Week Deliverable 1–3 Backlog triage, crash and performance fixes, i18n layer + string externalization 4–6 Spanish, French, Italian live end-to-end — content, audio, layout 7–9 German, Russian, Portuguese — including layout fixes for text expansion 10 Documentation & handover — setup, architecture, runbook. Store listings and regional pricing shipped. 11–12 Hebrew (RTL), or backlog overflow Requirements

Must have

• 3+ years shipping production mobile apps
• At least one app you personally took through App Store and Play Store review
• Strong React Native / Expo and TypeScript
• Real, shipped i18n experience — you've launched an app in multiple languages and know where it breaks. Not "I've used i18next once."
• Hands-on with mobile subscriptions and IAP (RevenueCat, StoreKit, or Play Billing)
• Experience with a Postgres/REST or BaaS backend (Supabase, Firebase, or similar)
• Tests on real devices before shipping — "works on my machine" isn't done
• Fluent English; disciplined enough to work independently without daily supervision

Nice to have

• RTL / Hebrew or Arabic layout experience
• Audio-heavy app experience — streaming, caching, background playback, lock-screen controls
• Push notifications (APNs, FCM)
• App store review or metadata compliance across markets
• Sensitivity to religious or spiritual content — you should be able to handle it with care, whatever your own background

Terms

• 3-month fixed-term contract, remote, working in full-time capacity
• First month is probationary — 2 weeks' notice either side
• Compensation: [range] for the full term, paid monthly against milestones
• All work product and IP assigned to the company
• Documentation and handover are contractual deliverables, due at week 10
• Extension to an ongoing maintenance retainer available; decided in week 10

To Apply

Send:

1. Links to apps you've shipped — especially anything multilingual
2. A short note on the hardest localization problem you've solved and how you found it
3. GitHub or a code sample, if you can share one

Job Title: Application Developer Intern (Android & iOS)

Location: Gurugram, Haryana, India

Employment Type: Full-time Internship (Immediate Joiners Preferred)

Internship Duration: 6 Months (Can be extended/performance-based PPO)

Stipend: As per company norms

About Aaizel International Technologies Private Limited

Aaizel International Technologies Private Limited is a fast-growing technology company focused on building scalable web and mobile applications. We specialize in cross platform development using React Native, delivering seamless user experiences across Android, iOS, and web. Driven by innovation and eAiciency, we create high-performance digital solutions that solve real-world problems.

At Aaizel International Technologies Private Limited, we foster a culture of ownership, creativity, and continuous learning, empowering aspiring developers to build impactful products. Internship

Overview

We are looking for enthusiastic and passionate Application Developer Interns who are eager to learn mobile application development across Android and iOS platforms. The ideal candidate should have a strong programming foundation, an interest in mobile technologies, and a willingness to work on real-world projects under the guidance of experienced mentors.

Key Responsibilities

 Assist in developing and maintaining Android, iOS, and cross-platform mobile applications.

 Collaborate with senior developers to build scalable and user-friendly applications.

 Write clean, maintainable, and eAicient code.

 Integrate REST APIs and third-party services into mobile applications.

 Participate in debugging, testing, and performance optimization.

 Assist in application deployment and app store release processes.

 Work closely with UI/UX designers and backend developers.

 Learn and follow coding standards, version control practices, and software development methodologies.

Required Skills & Qualifications Educational Qualification:

 B.Tech/B.E., BCA, MCA, M.Tech, or equivalent in Computer Science, Information Technology, or related disciplines.

 Final-year students or recent graduates are encouraged to apply.

Technical Skills (Basic Knowledge Preferred)

 React Native

 Android (Java/Kotlin)

 iOS (Swift)

 React.js

 JavaScript, HTML, CSS

 ExpressJS (Basic)

 REST APIs

 MySQL/MongoDB (Basic)

 Git/GitHub Preferred Knowledge

 API Integration

 Authentication (JWT/OAuth)

 Firebase

 Local Database (SQLite/Realm)

 Payment Gateway Integration (Basic understanding)

 Push Notifications

 Cross-platform mobile development concepts

Soft Skills

 Strong analytical and problem-solving skills.

 Good communication and interpersonal skills.

 Quick learner with a positive attitude.

 Ability to work collaboratively in a team environment.

 Passion for mobile application development and emerging technologies.

What You'll Gain

 Hands-on experience working on live industry projects.

 Mentorship from experienced software developers.

 Exposure to modern mobile application development tools and frameworks.

 Opportunity to enhance technical and professional skills.

 Certificate of Internship upon successful completion.

What does the core role include?

• Designing and developing high-volume, low-latency applications for mission-critical systems and delivering high-availability and performance
• Designing stateless components in React Native
• Contributing in all phases of the development lifecycle
• Working with the developers to create and maintain a robust framework to support the apps
• Working with the developers to build the interface with a focus on usability features

What else can you expect in the role?

• Prepare and produce releases of software components
• Optimizing performance for the apps
• Problem-solving skills, analytical mind, and positive attitude
• Ability to think from end users perspective and focused on improving the overall product experience.
• Deliver across the entire app life cycle concept, design, build, deploy, test, release to app stores and support

What can fetch you brownie points?

• Hands on experience with React Native is required
• Hands-on experience in React Native APIs, ReactJS, Javascript, ECMAScript (OOJS) and JSX.
• Strong understanding of JavaScript ecosystem
• Hands on experience on Android in creating Hybrid / Native applications
• Demonstrable UI/UX experience on a large-scale app.
• Thorough understanding of React Native development tools like IDEs (Nuclide, Atom, Sublime Text, or Visual
• Good knowledge of JS frameworks like ReactJS is a plus.
• Desired Skills and Experience
• Hybrid Apps,React Native, Native iOS and Android Architecture understanding

Requirements:

• Minimum 3 years of experience in React Native.

• Integration of Rest APIs in react native.

• Firm grasp of the JavaScript and Typescript language and its nuances, including ES6+ syntax

• Knowledge of functional and object-oriented programming

• Ability to write well-documented, clean JavaScript code

• Rock solid at working with third-party dependencies and debugging dependency conflicts

• Familiarity with native build tools, like XCode, Gradle, Android studio and IntelliJ

• Proficient understanding of releasing and monitoring apps on IOS App store, Play store.

• Should be able to communicate to backend developers on API building and modifications needed.

• Testing and releasing builds Experience in application testing software’s Appium is preferable.

• Understanding of REST APIs, the document request model, and offline storage

• Experience with automated testing suites, like Jest or Mocha

• Experience with handling production mobile apps.

• Experience with performance testing and optimization.

Responsibilities:

You’ll

• We are looking for a React Native developer 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.

• 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.

We are looking for a Sr. React Native Developer to help design and develop a new mobile application.

Roles and Responsibilities
1. Developing high-quality JavaScript code for the application.
2. Working closely with design and technology teams to gather requirements and formulate solutions.
3. Coordinating with back-end team to establish JSON-based APIs.
4. Deploying and managing application on Google Play Store & App Store.
5. Optimizing application for maximum speed, performance, and compatibility.
6. Making recommendations to address UI/UX issues.
7. Providing assistance to QA to ensure the app is properly tested and QAd.

Desired Candidate Profile
1. Bachelor's Degree or higher in Computer Science or related field.
2. Strong experience working with React Native on production apps, with knowledge of existing standards and best practices.
3. Strong experience in JavaScript, and Redux.
4. Experience with version control tools (GIT).
5. Experience with responsive design/implementation.
6. Familiarity with REST APIs.
7. Experience with common front-end development tools such as Babel, Web pack, NPM, etc.

Bonus

Knowledge in any or all of any or all of Swift, Objective-C, Java, and Kotlin is a big plus.