OVERVIEW OF REACH52 AND OUR WORK
reach52 (R52) is a fast growing, social enterprise start-up working to bring sustainable, universal basic healthcare services to users in low-access, developing regions. We do this through an innovative service model, an off-line technology platform and embedding support within communities to help residents access care, knowledge and other services we deliver.
Our mission is divided in to two parts: community access, navigation and healthcare support on the one side; and ultra-low-cost fill-in services to sustain the solution on the other. This allows core healthcare services and treatments to reach further into communities where state of the art services don’t always get to. Our fill-in services allow treatments for life threatening conditions to be accessed reliably and with continuity, so minimising the risk of relapse or crippling financial problems. At the current time our income comes from grant funding and the value of our data services. This, together with other funding streams, provides a sustainable solution so that the services become embedded in the communities we serve.
OVERVIEW OF THE ROLE
In 2019, reach52 was been awarded funding from a major bank to grow into India. We would like tohire a highly motivated Junior Software Engineer to support the designing and delivery of enterprise solutions, applications and integrations in India. India is a new market for us, and we are rapidly expanding our userbase and need to continue to build our portfolio of integrated applications that work in a challenging, off-line environment. We currently use document databases to replicate data between a master and the off-line applications. We have extended workflows that mean our processes flow through Java/Kotlin applications on android and through web technologies depending on the access channel. We support interactions with communities, commercial, logistics and police offices. We need extend our support for internationalisation and localisation and to integrate external services such as local payment options to our commercial applications, together with access to data from third parties. The role will involve the continuing development of a cross application technology solution with emphasis on cost and productivity and existing investment. The candidate should be able to work well with the dev team based in Manila, Philippines.
Title: Junior Software Developer
Employment: Full time contract with probation period
Start Date: Mar 2020
Location: Bangalore
Reporting to: CTO
ROLE SCOPE AND RESPONSIBILITIES
The core role scope and responsibilities will be:
• Understand and analyze user requirements and defects;
• Design and develop R52’s existing Java/Kotlin-based applications;
• Work on new development projects;
• Work with users and stakeholders to scope out new requirements;
• Work as part of a distributed team.
PERSON SPECIFICATION
The ideal candidate will have:
• Strong communication skills;
• 2-4 years software development experience;
• A selection of the following and be prepared to assess and learn new techniques appropriate to system redevelopment:
o Cloud platforms
o Proficient with Java / Kotlin / Python / Elixir
o NoSQL databases and replication
o Commercially secure communications
o Website / API security
o Application integration
o Design of off-line services
o Containerisation (Docker)
o Release Management and Deployment (Kubernetes)
• Knowledge of healthcare systems and/or technology is a strong advantage;
• Strong team working skills, ability to work to deadlines, and flexibility to work as part of a small but-growing team in a dynamic way.

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Position: Senior React Native Developer (4- 7 years)
Location: Remote (Company in Mumbai)
Company: Big Rattle Technologies Private Limited
Immediate Joiners only.
Summary:
We're looking for a seasoned React Native developer who has shipped production-grade mobile apps on both iOS and Android — ideally in the high-traffic, high-stakes world of e-commerce. You'll own the mobile experience end-to-end: architecture, performance, and flawless UX across devices.
Note: We are looking for a senior expert who has delivered multiple apps that are built from scratch and hosted on Apple Store/ Play Store i.e. e2e lifecycle.
KEY RESPONSIBILITIES
- Design and build scalable React Native apps for both iOS and Android from scratch to App Store / Play Store deployment.
- Architect complex e-commerce flows — product catalogues, cart, checkout, payment gateway integration, and order tracking.
- Optimize app performance: reduce TTI, maintain smooth 60fps animations, and manage memory on low-end devices.
- Integrate REST and GraphQL APIs; manage state with Redux Toolkit, Zustand, or React Query.
- Implement push notifications, deep linking, in-app navigation, and offline-first strategies.
- Write clean, well-tested code; maintain CI/CD pipelines using Fastlane, GitHub Actions, or Bitrise.
- Collaborate with designers, backend engineers, and product managers in Agile sprints.
- Conduct code reviews and mentor junior mobile developers.
Required Skills:
Core Mobile
▸ React Native CLI & Expo
▸ TypeScript
▸ React Navigation v6+
▸ iOS (Swift basics) & Android (Kotlin basics) ▸ Xcode & Android Studio
E-commerce & Integrations
▸ Product / Cart / Checkout flows
▸ Razorpay, Stripe, PayPal SDKs
▸ Wishlist, search UX, filters
▸ Order tracking & delivery status
▸ Push notifications & deep linking
State & Data
▸ Redux Toolkit / Zustand
▸ React Query / SWR
▸ REST & GraphQL APIs
▸ AsyncStorage / MMKV
▸ Firebase Realtime DB / Firestore
DevOps & Tooling
▸ Fastlane & GitHub Actions / Bitrise
▸ Jest (unit) & Detox (E2E)
▸ Firebase Crashlytics & Sentry
▸ Flipper / Reactotron
▸ App Store & Play Store deployments
Nice to Have skills: New Architecture · RN Web · AR try-on · RTL support · Shopify SDK · WCAG · Maps SDK
- React Native New Architecture (JSI / Fabric / TurboModules)
- React Native Web or monorepo setups (Nx, Turborepo)
- AR product try-on experiences (ARKit / ARCore)
- Shopify Storefront API or WooCommerce SDK experience
- Accessibility (WCAG mobile) implementation
- Live order-tracking maps (Google Maps / Mapbox)
Required Qualifications:
- Bachelor’s degree in Computer Science, Engineering, or a related technical field.
Why should you join Big Rattle?
Big Rattle Technologies specializes in AI/ ML Products and Solutions as well as Mobile and Web Application Development. Our clients include Fortune 500 companies. Over the past 13 years, we have delivered multiple projects for international and Indian clients from various industries like FMCG, Banking and Finance, Automobiles, Ecommerce, etc. We also specialise in Product Development for our clients.
Big Rattle Technologies Private Limited is ISO 27001:2022 certified and CyberGRX certified.
What We Offer:
- Opportunity to work on diverse projects for Fortune 500 clients.
- Competitive salary and performance-based growth.
- Dynamic, collaborative, and growth-oriented work environment.
- Direct impact on product quality and client satisfaction.
- 5-day hybrid work week.
- Certification reimbursement.
- Healthcare coverage.
Minimum Requirements:
- 6+ years of experience in Software Development and writing Unit tests for Mobile Apps
- Excellent designing, debugging and programming skills in an Object oriented programming language like C#, Java, javascript, Swift, Dart etc.
- Experience with Native Mobile development (Android or IOS) and Cross-Platform mobile development (preferably Flutter)
- Solid understanding of SOLID principles
- Strong knowledge of writing code for testability, modularity and extensibility
- Knowledge of test methodologies and corresponding unit test framework tools like JUnit etc.
- Excellent communication and organizational skills.
Good to have
- Experience working with BloC Pattern and Dependency Injection
- Knowledge of Eventing based programming patterns.
- Exposure to integrating Performance, Analytics, Attribution tools
- Experience of using Flavors in application development
- Knowledge of Multi-module development in Flutter (ex- via Melos)
Responsibilities:
- Work with the product team and drive design, development and delivery of new features.
- Investigate and fix issues referred to by the support team. Write code to automate tests to automate regressions.
- Work on improving stability, debuggability, testability of existing functionalities/modules/components
- Integrate REST and GraphQL APIs and consume in app.
- Serve as a technical lead for the team
- Mentor team members
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
You will develop Android applications that scale to reach millions of users • You will continually evaluate emerging technologies to identify opportunities, trends, and best practices that can be used to strengthen technology platform and development practices • Work with the team to create user interface layouts for customers and interfaces to backend web services • Design and develop systems and libraries that are highly reusable and maintainable • Understand product architecture and frameworks and come to the table with your ideas • Collaborate with different teams along with other Android developers to exchange new ideas and improvements
REQUIREMENTS • Proficiency in the standard Android tech stack - JAVA, Android SDK, Android Studio, SDK, adb, Layout Editor • Good knowledge of Object Oriented Programming and design patterns, MVC, MVVM, Dependency Injection and more • Restful API, JSON Parsing, XML Parsing, Retrofit Network Libraries • Strong knowledge of Android UI design principles, patterns, and best practices • Payment Gateways Integrations. • Experience of working with multi-language, multi-screen resolutions • Experience with offline storage, threading, and performance tuning • Excellent Android technical issue diagnosis and problem solving skills • Help maintain code quality, organization, and automatization • Proficient understanding of code versioning tools, such as Git • Experience with SQL databases, Java or full stack development is a plus
Seenit’s suite of apps enables the leading retailers around the world to transform their customer experience and build loyal relationships with their customers. The apps allow retailers to make use of their physical infrastructure and resources to deliver a truly omnichannel experience in today's rapidly changing world of shopping.
We would welcome someone to the team who:
- Loves to write “clean”, well designed code to solve complex problems
- Can design, develop and test the core product software to ensure strong optimization and functionality
- Is inclined to contribute in all phases of the development lifecycle and takes end to end ownership of the project
- Is excited to support others to succeed and shine in a collaborative team culture
Your application will require you to have:
- Just some previous projects to showcase, no need for CV immediately
You should work with us because:
- We’re a relaxed diverse group and don’t take ourselves too seriously
- We're creative and want to change the world while we're at it (yes we do!)
- Our products have an international audience and our partners are around the globe
- Team lunches are more frequent than team meetings
- We love to travel and will ask you to take time off to refresh
Skillset: React Native Developer
Experience: 3-6 yrs
Location: Delhi - WFH
JD:
Skills
3+ years experience in React-Native based app development is a must.
Must have published at least 1 major React-Native app
2+ years experience in building consumer facing Mobile Applications in React or React
Native.(layouts, animations, etc.)
Bachelor's degree in Computer Science or equivalent practical experience.
Strong fundamentals around Redux lifecycle, store and middleware.
Excellent hands on knowledge of Javascript, HTML, CSS/CSS3, JQuery is must.
Knows how to embed React-Native in a native(iOS/Android) component and vice versa
Strong hold on JS/ CSS fundamentals and debugging skills
Strong UX/UI design exposure and experience in making apps work intuitively and with pixel
perfect interfaces.
Experience of customizing libraries
Good understanding of Design and Architecture Patterns
Strong focus on app performance
Experience with Git, Github, Pull Request and Rebasing .
Experience and understanding of large and complex code bases and architectures.
Highly accountable and takes ownership, with a positive attitude, and is a lifelong learner.
What we are building?
Businesses need to manage a lot of user infrastructure like authentication, identity verification, user management, security and fraud prevention. Developing these solutions in-house can increase the go to market time, deviation from solving key problem, security lapses and frictional user journeys and lead to business losses. To cater these requirements of an expanding business we provide an one stop solution.
Our mission is to remove technical barriers for the companies when it comes to user infrastructure and create seamless structure for integration with our platform that handles security and provides simple and secure access to digital assets.
Sign3 is looking for an Android Developer.
What you will do?
- Own Android SDKs, working hand-in-hand with the founding team
- Design and build delightful user interfaces for native apps on Android
- You will be (co-) responsible for our software development kit (SDK) for Android
- Building mobile apps in both Swift and Kotlin.
- You work independently on your own code, but you also spend time collaborating with others.
- You are involved in all stages of app development and contribute to the roadmap.
- You get the freedom to experiment with new Android technology.
- Ownership — advocate for projects and solutions that need to be launched ground up.
Experience
- Min 2 to 4 years in developing Android applications in Java / Kotlin / C++ /
- Gradle/Groovy.
- Worked on SDKs/Frameworks.
- Strong understanding of software design patterns as well as Android specifics.
- Experience with authenticated sessions using authentication tokens and have at-least
- fundamental knowledge of app security.
- Good to have:-
- Experience with Cross-platform frameworks is a plus (React Native, Flutter, Cordova,
- Xamarin).
- Have implemented security standards and guides.
- Experience building applications at scale.
- Experience with third-party libraries and APIs like Mobile Vision, MLKit and/or
- Camera API.
- Good understanding of garbage collection, design patterns and continuously
- discover, evaluate, and implement new technologies to maximise development
- efficiency.
- Unit-test code for robustness, including edge cases, usability, and general
- reliability
● Good understanding of areas such as Algorithms, Data Structures, ObjectOriented Design, Databases.
● Solid understanding of Android Architecture Components
● Understanding of large and complex code bases, including API designtechniques to help keep them clean and maintainable.
● Programming experience in Java, kotlin and related frameworks.
opening for senior software engineer having knowledge for 2 to 4 years in React native Android/IOS Native Development
5 days working
company based in Gurgaon






