Frontend Developer

About CK-12 Foundation:

CK-12 is on the lookout for talented, creative, and dedicated people to join our mission to provide great education to students around the world. We are looking for candidates to join our Bangalore office.

We have a strong education platform that has served 265+ million users, answered 2.33+ billion questions, and created 290,000+ customized FlexBooks. We are on an exciting journey to build an AI-powered Student Tutor and Teacher Assistant, shaping the next generation of learning platforms.

CK-12’s mission is to provide free access to open-source content and technology tools that empower students and teachers to experiment with different learning styles, resources, and levels of competence.

To achieve this ambitious vision, we are challenging the traditional education model and transforming it through technology. CK-12 is a non-profit organization, enabling us to experiment with bold ideas and truly focus on doing what’s right. We are backed by Vinod Khosla, a renowned technology venture capitalist.

At CK-12, you’ll work in a dynamic, entrepreneurial, innovative, and non-bureaucratic environment, alongside a small group of passionate individuals determined to disrupt education as we know it.

Technology is key to scaling education, and we deeply believe in it. Join us to build impactful solutions on our cloud-based (AWS), AI-first platform, delivering rich and interactive learning experiences.

If our mission, people, and technologies excite you—and you’re someone who challenges the status quo (no order-takers!)—we’d love to hear from you.

Products:

Flexi 2.0 – AI-powered Student Tutor

https://www.flexi.org/

AI-powered Teacher Assistant

https://www.ck12.org/pages/teacher-assistant/

Location

Bangalore (Office-based)

Basic Qualifications:

• Passion for creating simple, intuitive, and delightful web / mobile user experiences
• Strong understanding of computer science fundamentals, algorithms, and data structures
• Excellent problem-solving skills
• Ability to research and evaluate web and mobile frameworks and UI patterns
• Experience designing for multiple screen sizes, performance constraints, and varying network conditions
• Comfortable working in Agile environments with rapid iterations
• Ability to create and review high-level and detailed designs
• Strong focus on code quality, best practices, and maintainable code with solid unit test coverage

Required Skills & Experience:

• Bachelor’s or Master’s degree in Computer Science or equivalent
• 6+ years of overall experience
• Strong hands-on experience with either React.js (or a similar frontend framework) or mobile app frameworks such as Flutter or React Native.
• Strong inclination toward product ownership, with a focus on nurturing features based on how users actually use the product.
• Experience building and maintaining production-grade web or mobile applications
• Expert knowledge of object-oriented programming, design, and development
• Solid understanding of mobile application architecture, performance, and memory management
• Proficiency in Dart / JavaScript / TypeScript
• Experience consuming REST APIs and handling JSON
• Experience with responsive layouts and adaptive UI design
• Familiarity with UI patterns related to security, performance, and usability
• Experience using Git and mobile build/release pipelines

Good to Have:

• Experience with native mobile development (Android / iOS)
• Familiarity with CI/CD for mobile apps and app store deployments
• Experience working in distributed and Agile teams
• Performance optimization for scalable mobile applications
• Familiarity with LLMs (Large Language Models)
• Experience creating or maintaining mobile UI documentation or component libraries

Position Overview: We are seeking a talented and motivated ReactJS Intern to join our team for a 6-month full-time internship. This is a fantastic opportunity for someone with prior internship experience to deepen their knowledge and skills in ReactJS while working on cutting-edge projects.

Responsibilities:

• Collaborate with the development team to design, develop, and maintain web applications using ReactJS.
• Write clean, maintainable, and efficient code.
• Participate in code reviews and contribute to the improvement of the codebase.
• Work closely with designers to implement user interfaces and user experiences.
• Assist in troubleshooting, debugging, and optimizing applications.
• Stay updated with the latest industry trends and technologies related to ReactJS.
• Contribute to the documentation of technical processes and workflows.
• Engage in team meetings and brainstorming sessions to contribute innovative ideas.

Requirements:

• Previous internship experience in a software development role.
• Knowledge of ReactJS and its core principles.
• Proficiency in JavaScript, HTML5, and CSS3.
• Familiarity with RESTful APIs and asynchronous request handling.
• Understanding of modern front-end build pipelines and tools.
• Experience with version control systems, preferably Git.
• Excellent problem-solving skills and attention to detail.
• Ability to work effectively in a collaborative team environment.
• Strong communication skills and the ability to articulate technical concepts clearly.

Nice to Have:

• Understanding with state management libraries like Redux or Context API.
• Knowledge of TypeScript and its integration with ReactJS.
• Familiarity with front-end testing frameworks and tools (e.g., Jest, Enzyme).
• Understanding of responsive design principles and mobile-first development.
• Experience with CSS preprocessors like SASS or LESS.

What We Offer:

• Hands-on experience with real-world projects and modern technologies.
• Mentorship and guidance from experienced professionals.
• A collaborative and inclusive work environment.
• Opportunity to contribute to meaningful projects and make a real impact.
• Competitive stipend and potential for a full-time position upon successful completion of the internship.

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Experience : 2 to 5 years

Location : Remote

Immediate joiner (0 to 20 days)

Job Description
We are looking for a great JavaScript\ developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.

Responsibilities

• Developing new user-facing features using React.js

• Building reusable components and front-end libraries for future use

• Translating designs and wireframes into high quality code

• Optimizing components for maximum performance across a vast array of web-capable devices and browsers

Skills:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model

• Thorough understanding of React.js and its core principles

• Experience with popular React.js workflows (such as Flux or Redux)

• Experience with data structure libraries (e.g., Immutable.js)

• Knowledge of isomorphic React is a plus

• Familiarity with RESTful APIs

• Knowledge of modern authorization mechanisms, such as JSON Web Token

• Familiarity with modern front-end build pipelines and tools

• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.

• Ability to understand business requirements and translate them into technical requirements

• A knack for benchmarking and optimization

• Familiarity with code versioning tools (such as Git, SVN, and Mercurial

Responsibilities

• Developing new user-facing features using ReactJS
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers
• Understand business requirements and translate them into technical requirements
• Building robust applications that can handle both unexpected errors and heavy load

• 3+years experience in Reactjs
• Strong proficiency in JavaScript and Typescript
• Strong Knowledge of Redux/React Context/Hooks
• Strong Knowledge of frontend end technologies such as HTML/CSS
• Experience developing with responsive applications
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools like Webpack or Create React App
• Familiarity with Git