Android Developer

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.

iOS Developer

Experience 3-8 years

Job Qualifications and Skill Sets(T3-T4)

T3

1. Full-time undergraduate degree or above in computer and related majors

2. More than 3 years of iOS development experience, proficient in OC/Swifit language

3. Have good architecture and interface design capabilities, understand object-oriented design and design patterns, and be able to write high-quality code

4. Understand performance optimization, be familiar with Frameworks-related core libraries, multi-threading, data storage, network communication and other underlying principles

5. Have strong analytical and problem-solving abilities, quick learning ability, stress resistance, communication and collaboration skills

6. Proficient in the use of mainstream tripartite frameworks

T4

1. Full-time undergraduate degree or above in computer and related majors

2. More than 5 years of iOS development experience, proficient in OC/Swifit language

3. Have good architecture and interface design capabilities, understand object-oriented design and design patterns, and be able to implement reusable components with high quality

4. Familiar with performance optimization, familiar with Frameworks-related core libraries, multi-threading, data storage, network communication and other underlying principles

5. Have strong analytical and problem-solving abilities, quick learning ability, stress resistance, communication and collaboration skills

6. Applicants with experience in large-scale first-line Internet product development will be given priority

7. Applicants with development experience in large-scale project performance optimization, engineering efficiency optimization, cross-platform solutions, etc. will be given priority

8. Be familiar with one or more third-party source codes. You need to be familiar with and understand the design patterns and runtime source codes.

Note: Kindly apply only if your open to Work from Office Bangalore and available to join immediate to 10 days.

Interested candidates connect @Bhavani P on the LinkedIn or message your number/ id on the cut short chat.

1. Android Developer: Vadodara

• Basic Requirements:
• Education: BCA, MCA, Msc IT, Bsc IT or any equivalent qualification
• Work Experience: 3-6 year of experience in same field
• Good Communication skill (Preferred)
• Can work under pressure
• Meet deadlines
• Responsibilities:
• Reviewing (if already developed) current system workflow and database design.
• Analyzing the needs of system and producing detailed specification document
• Create a step by step flow chart or psudocode for computing systems that shows how program code must be written in order to work properly.
• Develop a functional modules according as required under deadline.
• Integrating 3rd party tools wherever required.
• Perform and document unit testing for developed functions.
• System maintenance by monitoring and correcting software defects.
• Continuously updating technical knowledge and skills as per industry standards.
• Contribute to technical writers to create users documents.
• All tasks must be carried out at the highest standards.
• Function/ Skills
• Strong experience on any of the modern Android Studio, Android SDK
• Ability to create Data Structures and Algorithms.
• Knowledge of Flutter will be an added advantage
• Working over cloud computing platform like Amazon Web Service (AWS), Google Cloud Platform (GCP), Microsoft Azure
• Strong designing / problem solving skills.

Job Description:

• Strong working experience in IOS application development is a must. First-hand experience of native mobile apps using Swift must.
• Experience with Swift, RxSwift, Swift UI, and Unit tests.
• Strong system design and architecture skills - specifically for IOS. Curiosity to tinker around, explore new paradigms and strongest for continuous improvement. Strong problem-solving skills.
• Understanding of network connections, Rest API'sand scheduling. Strong knowledge of security standards (e.g. HTTPS) and privacy standards.
• Idea/experience of the unit and instrumentation testing in IOS. Optimizing app performance and memory consumption.
• Leveraging community libraries to efficiently complete development tasks.
• Debugging apps using simulators and related tooling.
• Persisting data for offline-first apps using databases such as Realm.
• Localizing apps to support multiple languages and regions, vernacular libraries and fonts.
• Familiar with Version control systems such as GIT.

Requirements

• Development experience in React Native
• Experience in developing UI in HTML, CSS, and JS and integration with the backend using REST API.
• Experience with Object-Oriented Programming • Ability to multitask and work in a fast-paced environment.
• Ability to document their code.
• Understanding accessibility and security compliance.
• To translate storyboards and various use cases to create high-performing apps
• Write, execute, and maintain clean, reusable, and scalable code • Integrate our various data storage solutions
• Ensure the responsiveness and boost the performance of our apps
• Find and address the various bottlenecks and bug-fixes
• Help in code automatization
• Proficient in GIT

Responsibilities

• As a Hybrid Mobile App Developer, you will be responsible for creating compelling concepts for customer products and offerings as well as engage user experience across varied platforms.
• You shall be involved across all stages of the application life cycle, from requirements specification, wireframes, mockups, development, testing to deployment.
• You shall be expected to work in a team, assigning and delegating tasks and responsibilities among your co-developers.
• You will also be engaged in providing regular updates on project status & progress to non-technical stakeholders.

Hiring Process

• After getting shortlisted from here, a member of our team will contact you.
• We will schedule a interview as per mutually convenient time.

We are a health-tech company looking for smart iOS developer with atleast 2 years of experience. The roles and responsibilities will include –

Key Skills:
Core data – database; core animation; sql lite; swift 5.1; architecture - mvc/ mvvm

Technology

1. Primary Skills: Swift(4 and above)
2. iOS Tools: Xcode, source control(git, Bitbucket), JIRA 
3. Framework: Excellent with MapKit, Core location, Offline data storage (CoreData, Realm, SQLite ), Networking(Url Session, Almofire), Graphs, XCtest, UI, and Foundation frameworks
4. Good to have: Objective C, Any other cross-platform technologies

 
Responsibilities

1. Must have hands-on experience with maps and should understand the basics of GIS.
2. Should understand data visualization techniques on a map.
3. Understand requirements around functionality and translate those requirements into elegant functional solutions.
4. Working along with the other developers to create and maintain a robust framework to support the app's concept, design, build, deploy and test.
5. Excellent debugging and optimization skills.
6. Should understand app deployment process, preferred to have released applications on iTunes before.
7. Should understand iOS design patterns.
8. Should be familiar with the concepts of localization and multilingual support.
9. Keep up to date on the latest industry trends in mobile technologies.
10. Good communication skills to explain technologies and solutions to technical and non-technical stakeholders.

We are looking for Flutter Developer with 1 - 5 yrs of experience.

Work Location: Jodhpur

Responsibilities:

• Develop and maintain the app(Android & iOS)
• Maintain quality of code
• Collaborate with other engineers in building applications.
• Attend daily standup meetings.
• Discuss and write specifications for tasks.
• Assist system lead with system design.
• Conduct code reviews as requested.
• Test sites and applications in different browsers and environments.
• Learn and test new technologies, frameworks, and languages.
• Stay up to date with new trends and advancements in app development

Skills and Qualification:

• Knowledge of Dart Language
• Familiarity with version control
• Basic understanding of Flutter architecture, Widget trees
• Familiarity with app architecture (MVVM, MVP, MVC, etc...)
• Understanding of async operations
• Familiarity with local storage (like Dio, shared preferences, etc... )
• Familiarity with Flutter state management approach (BLoc, provider, etc...)

About Company:

Open Innovations Lab is an initiative of JTittle Innovations for all individual or group of innovators/ experts/specialist who wants to share knowledge with an open community so our job is often about setting up/hosting open activities/sessions that enable people to learn from each other and build on their own knowledge. We are technology enthusiasts working on a couple of interesting products/services in the area of digital advertisement and the travel domain. We leverage the power of chatbot(s) augmented / artificial intelligence over the cloud to help CXOs generate better ROI.

As an Architect you are responsible for research, design, test, implement, and maintain Android applications
to meet client needs. You are expected to be Subject Matter Experts on Android application architecture.
You are also expected to demonstrate value to the organization by mentoring other team members as they
learn and grow, take ownership and responsibility not only for your deliverables, but for the entire
application and its use, and to find a balance between achieving software excellence and delivering working
code.
Roles and Responsibilities
o Involved with all phases of mobile app development from initial concepts, through design, development,
testing and deployment
o You will help guide multiple Agile teams with open communication channels, regular releases, and a
focus on continuous improvement.
o Guide and mentor a team of Android developers and work closely with Quality Engineers
o Establish best practices and processes that ensure quality within the team
o Champion our best practices and mentor team on use and results of these best practices
o Responsibility for product both pre and post launch to ensure application is meeting customer needs
and achieving continued revenue goals
o Architect, Lead, implement and review new features for android phones and tablets.
o Interactive communication of designs and other development topics to Leadership, Product Owners,
Scrum Master and other Agile Team members.
o Lead code reviews to ensure code quality and shared knowledge.
o Research and analyze the existing code base to identify issues and improve application performance and
maintenance.
o Take ownership and sense of responsibility of all deliverables.
o Work within SCRUM agile process with other stakeholders (Product Owners, XD design, Quality
Engineers) as well as across organization to balance creative objectives with business needs and
technical requirements
Looking for experienced senior Android and iOS mobile architect / developers to join an established team working on a Tier 1 personal cloud platform with 20M+ subscribers.   Candidates will be joining at an ideal time as the program undertakes a technology refresh in migrating toward progressive web application technology.  Candidates will have the opportunity to be hands on while also leading design activities and implementing programs to improve quality and productivity.    Will have a direct channel to the product leadership team for support of transformation initiatives.

ho we have in mind:
• 10+ years of experience in developing native Android application(s). Kotlin is a must.
• Understanding of Hybrid application development is a plus.
• Solid understanding of the full mobile development life cycle.
• Expert in multi-threading concepts to create highly responsive data intensive applications
• Experience leading large development teams in active Lead/Architect role
• Experience architecting mobile applications main focus on Android apps.
• Expert on Android OS, Android UI design principles, Android architectural components, Android
design patterns (MVP, MVVM), best practices and a desire to learn and apply new technologies.
• Ability to design for scalability and resilience
• Strong application process flow and problem-solving techniques
• Experience with RESTful web services using XML/JSON data formats
• Strong focus on refactoring and code quality
• Understanding of software configuration management and release management
• Expert in creating design and maintain architecture documentation, class diagrams, technical flow
documents etc
• High levels of software engineering literacy and communication skills
• Professional demeanor who works easily with leadership, product owners, engineers and other
departments both internally and externally