iOS Developer

We are looking for a Senior Frontend / Mobile App Engineer with deep expertise in React Native and/or Flutter, strong frontend fundamentals, and a product mindset. You will play a key role in designing and building high-quality, scalable, and performant mobile applications used by millions of learners worldwide.

This role requires hands-on ownership, architectural thinking, and the ability to collaborate closely with product, design, and backend teams in a fast-moving, AI-first environment.

Key Responsibilities:

• Lead the design and development of high-performance mobile applications using React Native and/or Flutter
• Build intuitive, engaging, and accessible user experiences across Android and iOS
• Own features end-to-end—from concept and design to development, testing, and production release
• Define and drive frontend/mobile architecture, patterns, and best practices
• Ensure excellent app performance, responsiveness, and reliability at scale
• Collaborate with backend teams to integrate APIs and AI-powered services
• Mentor junior engineers and contribute to code reviews and design discussions
• Continuously evaluate and adopt new tools, frameworks, and patterns to improve product quality
• Work in an Agile environment with rapid iterations and frequent releases

Required Qualifications

• Bachelor’s or Master’s degree in Computer Science or equivalent
• 6+ years of overall frontend/mobile development experience
• Strong hands-on experience with React Native and/or Flutter in production-grade apps
• Deep understanding of JavaScript / TypeScript, mobile UI frameworks, and app architecture
• Strong knowledge of CS fundamentals, data structures, and algorithms
• Experience building scalable, maintainable, and testable codebases
• Solid understanding of mobile performance optimization, memory management, and rendering
• Experience working with RESTful APIs and modern backend integrations
• Proficiency with Git and modern build / CI tools
• Strong problem-solving skills and product-oriented thinking

Why Join CK-12?

• Work on products impacting hundreds of millions of learners globally
• Be part of a non-profit, mission-first organization
• Build cutting-edge AI-powered learning platforms
• High ownership, low bureaucracy, and freedom to innovate

We are looking for a Mobile Lead (IOS & Android) for one of the leading TMT bar manufacturers & suppliers in Kolkata.

Role - Mobile Lead (IOS & Android)

Experience - 5+ years

Location - Kolkata

Job Description :-

As a Mobile Lead, your primary responsibility is to oversee the development and maintenance of mobile applications for our organization. 

Some of the key job responsibilities include :-

1. Leading the Mobile Development Team: You will lead a team of developers, designers who are responsible for building and maintaining mobile applications. You will be responsible for Coding, delegating tasks, setting goals and timelines, and overseeing the team's performance to ensure that the development process runs smoothly.

2. Developing Mobile Applications: You will be responsible for developing mobile applications for iOS and Android platforms, using a range of programming languages such as Swift, Java, Kotlin, and React Native. You will need to ensure that the application is scalable, user-friendly, and meets the specific requirements of the organization.

3. Collaborating with Stakeholders: You will be responsible for collaborating with various stakeholders in the organization, including product managers, project managers, designers, and other development teams to understand the requirements and objectives of the application. You will need to ensure that the application aligns with the overall product roadmap and meets the business objectives.

4. Ensuring Quality: You will be responsible for ensuring the quality of the mobile application, including testing, debugging, and fixing any issues that arise during the development process. You will need to

ensure that the application is free of bugs, runs smoothly, and meets performance and usability standards.

5. Keeping Up with Emerging Trends: You will need to stay up to date with the latest developments in mobile technology, and emerging trends in user experience and design. You will need to ensure that the mobile application is using the latest technologies and is in line with industry best practices.

6. Managing Project Budget: You will be responsible for managing the budget for mobile development projects, including resource allocation, vendor management, and contract negotiations.

Overall, the Mobile Lead is a critical role that requires a strong understanding of mobile development processes and the ability to lead a team to deliver high-quality mobile applications.

＃Must be Proficient in Swift, Objective C, Apple’s Xcode IDE

＃Knowledge of frameworks and APIs like Foundation, UIKit, and CocoaTouch

＃Apple Human Interface Guidelines

＃OpenGL or Metal, iOS graphics APIs

＃Familiarity with iOS 10 and newer OS versions

＃Knack for benchmarking and optimization

＃Experience on web service integration (SOAP, REST, JSON, XML)

＃Familiarity with cloud message APIs and push notifications

＃Using version control (e.g. SVN, GIT)

＃Excellent debugging and optimisation skills

＃Good to have backend development skills

Key Responsibilities

Developing new features and user interfaces from wireframe models.

Ensuring the best performance and user experience of the application.

Fixing bugs and performance problems.

Writing clean, readable, and testable code.

Cooperating with back-end developers, designers, and the rest of the team to deliver well-architected and high-quality solutions.

Key Skills

1. Extensive knowledge of mobile app development. This includes the whole process, from the first line of code to publishing in the store(s).

2. Deep knowledge of mobile platforms on which the app runs, e.g., Android, iOS etc.

3. Proficient in HTML, CSS, Javascript, React, React Native, Node whichever language you use in the app.

4. Proficiency with writing automated tests in JUnit, Espresso, Mocha, Jest, Enzyme, XCTest, etc. depending on the libraries you use to test

5. Familiarity with RESTful APIs and mobile libraries for networking.

6. Familiarity with the JSON format.

7. Experience with profiling and debugging mobile applications.

8. Strong knowledge of architectural patterns—MVP, MVC, MVVM, and Clean Architecture—and the ability to choose the best solution for the app.

9. Familiarity with Git and Github.

10. Familiarity with push notifications.

11. Understanding mobile app design guidelines on each platform and being aware of their differences.

Job Description:

1. Strong Object Oriented designing and programming skills in Java
2. Solid understanding of the Android App Components lifecycle
3. Experience in Google Cloud APIs and Firebase APIs
4. Experience in Flutter
5. Experience in SQLite database
6. Knowledge of important libraries like RxJava, Retrofit, Okhttp
7. Knowledge of MVVM architecture, GPS location tracking
8. Knowledge of source code management tools like Git
9. Have published at least one app on Google play store
10. Experience in working with remote data via REST and JSON
11. Maintain quality and ensure responsiveness of applications.
12. Collaborate with the rest of the engineering team to design and launch new features.
13. Experience with Android SDK and multiple versions of Android.
14. Experience with Android framework, as well as offline storage, threading, and performance tuning.
15. Experience with Android UI principles and best practices.

Good to have skills:

1. Having experience in Kotlin, Dagger, Jetpack, Room database
2. Having experience in Flutter, React-Native.

Job Description -

Job Title: Expert iOS Developer (NFT)

Experience: 3 to 8 Years experience

Job Location: Indore, Madhya Pradesh, India

Salary: Open (No bar for the right candidate)

Joining: Immediate (prefer less than 15 days Notice Period)

Requirements:

5+ years experience building mobile products.
Good knowledge of C/C++ required
Experience working with Cocoa/UIKit frameworks and the iPhone SDK.
Experience submitting applications to iTunes, with previous approved products in iTunes App Store
BS or MS in Computer Science or related fields preferred, top-tier schools preferred.
Experience using version control repositories.
Comfortable with agile/scrum development process and code reviews.
Involvement in system and integrated testing is required.
Should be capable of performing effectively in a team.

About the role:

We are looking for an experienced Software Development Engineer II (SDE2) to help deliver high visibility and impact features for the ChakraHQ Platform. ChakraHQ Platform is the world's first Omnichannel Process Automation Platform. Imagine AWS but for operations and business teams; built on cutting edge technology stacks, to solve problems for modern businesses.

Technology specialists at ChakraHQ are at the core of the company's decisions and vision. As an SDE2, you will contribute to the design and development of the core technology stack of the ChakraHQ Platform. Working closely with Engineering, Product Management, Sales and Customer Success you will take ownership to develop features, plugins and custom fixes that will materially impact customer’s and ChakraHQ’s business. You will also be responsible for maintaining a streamlined build and CI/CD system. You will help coordinate the incorporation of upstream features into the ChakraHQ Platform. 

Technologies you will work with: React-Native, Javascript, Android, iOS, PostgreSQL, Serverless, AWS, Google Cloud

Responsibilities:

• Design, develop and maintain features, services, products that are part of ChakraHQ
• Own delivery of said features and services
• Own success of the products by tracking its lifecycle with customers
• Build systems that scale horizontally
• Implement clean and modern mobile interfaces that provide an excellent user experience. 
• Write automated tests to ensure code quality
• Work with customers to build a product roadmap
• Work with sales & marketing to sell your product to end-users
• Work as an integral part of an agile software development team to build features end-to-end
• Support those features in the ChakraHQ production environment by participating in an on-call rotation

Position Requirements:

• Bachelor's degree in Computer Science.
• 3+ years of experience working on teams to develop and deploy web or mobile applications
• Expertise with Javascript
• Knowledge of frameworks such as React-Native is a big plus
• Ability to write code compatible across browsers and other clients
• Good understanding of backend systems i.e. web services, APIs from a consumer perspective
• Proficiency with git and Github workflows
• Expertise with test-driven development and automated testing
• Excellent analytical and problem-solving skills
• Excellent communication skills and fluent English
• Open to learn and work on new technologies