
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 office in Bangalore.
We have a strong education platform that has served over 265+ million users, has got over 2.33+ billion questions answered, and more than 290,000 customized Flexbooks. We have embarked on an exciting journey to build an AI-powered student tutor and Teacher Assistant to build the next generation of learning platforms.
About CK-12 Foundation:
CK-12’s mission is to provide free access to open-source content and technology tools that empower students as well as teachers to enhance and experiment with different learning styles, resources, levels of competence, and circumstances.
To achieve this noble and ambitious vision, we at CK-12 are challenging the traditional model of education to transform it dramatically. Technology has opened up lots of opportunities to revolutionize education for the benefit of students, teachers, and parents.
We have chosen to be non-profit so that we can effectively realize our mission and do the right thing! It also provides us with the ability to experiment with big and bold ideas. CK-12 is backed by Vinod Khosla, a renowned technology venture capitalist.
At CK-12, you’ll experience the benefits of working in a dynamic, entrepreneurial, innovative, and non-bureaucratic environment where you will get a lot of cool things done you never imagined! We are a small group of passionate folks who are determined to disrupt the current form of education.
Technology is key to scale education and we deeply believe in it. Come develop great solutions on our cloud-based (AWS) and AI-first platform delivering rich and interactive content.
Does our mission, people and technologies excite you? If the answer is YES! and you are a great technologist who will challenge status-quo (no order takers please!) by innovating, please come join us! Together, we will change the world!
Check out our latest product offering: Introducing Flexi 2.0
- Flexi, our AI-powered Student Tutor – https://www.flexi.org/
- AI-powered Teacher Assistant – https://www.ck12.org/pages/teacher-assistant/
Location: Bangalore Office
Position: Frontend UI Developer (React)
Basic:
- Passion for creating great user experiences that are simple and intuitive
- Good understanding of CS fundamental algorithms and Data Structures
- Great problem solver
- Understands and researches different front-end frameworks and patterns to implement great user interfaces
- Implements solutions keeping in mind the user experience, multi-devices, performance across devices, and bandwidths
- Ability to work in an Agile environment with rapid iterations
- Creates and reviews high-level designs
- Creates detailed designs from high-level designs and reviews designs of other team members
- A Code Craftsman who follows the best software development and coding practices delivering understandable and maintainable code with thorough unit test coverage
Required:
- Bachelor’s or Master’s degree in Computer Science or equivalent
- At least 1 years of experience
- Hands-on with frameworks like React, Redux, Backbone, Webpack, Lerna
- Expert knowledge of OOP (Object Oriented Programming), design, and development
- In-depth knowledge of browser internals and architecture
- Expert in JS (OOJS), HTML5, CSS3, JSON, REST, XML, W3C standards
- Experience with responsive web design & frameworks media queries
- Experience with UI patterns (security, performance, usability)
- Familiar with version control systems (Git/Subversion) & build tools like Grunt
Desired:
- Experience with ES6, Node.js
- Worked in distributed/agile environments
- Performance optimization for scalable web apps
- Familiarity with LLMs (Large Language Models)
- Familiarity with Storybook (React) or similar frameworks

About CK-12 Foundation
About
Passionate about education?
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 office at Bangalore.
We have a strong education platform that has served over 200 Million users, have got over 1.45 Billion questions answered and have got more than 285 thousand customised Flexbooks. We have embarked on exciting journey to build AI-powered student tutor and Teacher Assistant to build next generation of learning platform.
About CK-12 Foundation
CK-12’s mission is to provide free access to open-source content and technology tools that empower students as well as teachers to enhance and experiment with different learning styles, resources, levels of competence, and circumstances.
To achieve this noble and ambitious vision, we at CK-12 are challenging traditional model of education to transform it dramatically. Technology has opened up lots of opportunities to revolutionize education for the benefit of students, teachers and parents.
We have chosen to be non-profit so that we can effectively realize our mission and so that we can do the right thing! It also provides us the ability to experiment big and bold ideas. CK-12 is backed by Vinod Khosla, a renowned technology venture capitalist.
At CK-12, you’ll experience the benefits of working in a dynamic, entrepreneurial, innovative and non bureaucratic environment where you will get a lot of cool things done than you ever imagined! We are a small group of passionate folks who are determined to disrupt the current form of education. We came together from companies such as Apple, eBay, Amazon, McGraw-Hill, and startups.
Technology is key to scale education and we deeply believe in it. Come develop great solutions on our cloud based (AWS) and AI-first platform delivering rich and interactive content.
Does our mission, people and technologies excite you? If the answer is YES! and you are a great technologist who will challenge status-quo (no order takers please!) by innovating, please come join us! Together, we will change the world!
Check out how CK-12 is making an impact in teaching and learning - https://www.ck12info.org/about/testimonials/
Flexi, our AI-powered Student Tutor - https://www.ck12.org/pages/student-tutor/
AI-powered Teacher Assistant - https://www.ck12.org/pages/teacher-assistant/
Benefits: Medical and Accident Insurance, Free food orders for lunch.
Location: https://goo.gl/maps/NkA2Hr8JhtE3raWr5
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Role:
Senior Frontend Developer
Role Description:
Desired Experience Range 5+ years
Location: Mumbai / Work from Home
Work Experience:
Minimum 5+ years of professional experience in HTML, CSS, AngularJS
Requirements:
- Must have hands on experience in AngularJS, NodeJS
- Must have hands on experience in HTML 5, CSS 3
- Must have hands on experience in developing responsive layouts
- Must know how to test frontend layouts for various devices and resolutions
- Must have hands on experience working with SCSS
- Must have worked with Git
- Understanding of SDLC process
- Good to have knowledge of Jira
Key Responsibilites:
- Converting layouts to HTML/CSS
- Integrating the created HTML/CSS into the dynamic Slate platform
- Consuming APIs in AngularJS
- Setting up oAuth token exchange in AngularJS
- Looking into any bug fixes post go live
- Helping the junior developers
Reporting
Candidate will report to the Engineering Lead
Primary Skills
Frontend framework ReactJS
Pure JavaScript, jQuery
Bootstrap, HTML5, CSS, SASS
Passionate about implementing UX\UI of web applications
Understanding of Web Accessibility Standards (WCAG)
As a Frontend Developer, your responsibilities will include:
- Developing new user-facing features using React.js and integrating with backend services.
- 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 broad spectrum of web-capable devices and browsers.
Key Performance Indicators:
- Efficiency and quality of the code developed.
- Adherence to project timelines and delivery milestones.
- Positive stakeholder feedback on usability and design.
- Continuous improvement and adoption of best practices in frontend development.
Prior Experience Required:
- Minimum 3+ years of experience in frontend web development.
- Proficient in JavaScript, including DOM manipulation and the JavaScript object model.
- Extensive experience with React.js and its core principles.
- Strong proficiency in HTML5, CSS3, and modern frontend development tools.
- Experience with popular React.js workflows (such as Redux).
- Familiarity with newer specifications of EcmaScript.
- Experience with data structure libraries (e.g., Immutable.js).
- Good understanding of RESTful APIs and modern authorization mechanisms (e.g., JSON Web Token).
- Good to have: Experience with TypeScript and Next.js.
Location:
Hyderabad
Collaboration:
The role involves working closely with backend developers, UI/UX designers, and project managers to deliver seamless, high-quality web applications.
Salary:
Competitive, based on experience and market standards.
Education:
- Bachelor's degree in Computer Science, Information Technology, or a related field.
Language Skills:
- Strong command of Business English, both verbal and written, is required.
Other Skills:
- Excellent problem-solving skills.
- Looking for perfection in development
- Taking Ownership and Accountability in a fast-paced environment.
- Proficiency in code versioning tools, such as Git.
- Knowledge of modern frontend build pipelines and tools.
- Experience with responsive and adaptive design.
Additional Requirements:
- Portfolio of previous projects that demonstrates expertise in frontend development.
- Familiarity with agile methodologies.
- Strong teamwork skills, with the ability to collaborate effectively with colleagues and clients across diverse teams.
Employer:
About RaptorX
RaptorX is a fintech startup focused on redefining fraud detection and prevention in real time for banks, financial institutions, and digital platforms. Backed by top-tier investors, including senior technology leaders from Google, Microsoft, and Peak XV Partners, RaptorX leverages advanced AI models for anomaly detection, and high-throughput architecture to stay ahead of sophisticated fraud patterns.
Responsibilities
- Translate mockups and prototypes into interactive and responsive web applications with modern front-end technology
- Take highly complex information and make it digestible for business users
- Objectively navigate the unknown with effective communication and decision making
- Apply atomic design principles to emerging technologies and frameworks
Eligibility
- Experience in Angular/React, proficiency with JavaScript/TypeScript, HTML, and CSS
- Expert knowledge of responsive web design
- Knowledge of Git, GitHub, GitLab, and/or Bitbucket
- Knowledge of programming patterns, design patterns, and principles
- Have a great sense of design and basic knowledge about interaction design concepts
The Company is looking for a Front End Developer to join our growing team in our
Costa Rica office. Your experience here will give you the opportunity to improve the
fundamentals and learn about the top-notch technologies in front end development. If you are
someone who is passionate about building stellar user experiences and great products through elegant code this would be the job for you. You will play a key role in translating our customers and company needs into appealing and functional web pages while proving your ideas with testing. We all work closely together across teams so there's no red tape or
bureaucracy. We get things done!
What You Will Get to Do
● Work with your team to improve our conversion rates by coding out variations for A/B testing
● Build better user experiences
● Rigorously educate yourself with the latest development techniques and best practices
● Proactively anticipate issues and develop solutions
● Clearly communicate solutions to team members both verbally and in writing documentation
● Implement new digital technologies or development techniques that help to meet business
objectives
What You Bring to the Table
● 3+ years of front-end development experience
● Experience with responsive web design and the ability to deliver outstanding functionality
to the range of client devices from desktops and laptops to mobile platforms
● Familiarity with at least one JavaScript framework (MVW) and know when to do without
one when necessary.
● Understanding of HTTP and how clients interact with a web server.
● Solid understanding of best practices. You read the YDKJS books.
● Capable of coding in ES5 and ES6 and understand the difference between them
● Up-to-date on HTML5 and CSS3 features.
Strong on typescript/java script.
Strong on agile methodology.
Should have knowledge on writing unit test cases using jasmine/jest
Responsibilities
- Develop new user-facing features
- Build reusable code and libraries for future use
- Ensure the technical feasibility of UI/UX designs
- Optimize applications for maximum speed and scalability
- Assure that all user input is validated before submitting to back-end services
- Collaborate with other team members and stakeholders
Skills and Qualifications
- Strong understanding of JavaScript, its quirks, and workarounds
- Basic understanding of web markup, including HTML5 and CSS3
- Good understanding and the knowledge of advanced JavaScript libraries and frameworks such as AngularJS, KnockoutJS, BackboneJS, ReactJS, DurandalJS etc.
- Good understanding of asynchronous request handling, partial page updates, and AJAX
- Proficient understanding of cross-browser compatibility issues and ways to work around such issues
- Familiarity with JavaScript module loaders, such as Require.js and AMD
- Familiarity with front-end build tools, such as Grunt and Gulp.js
- Proficient understanding of code versioning tools, such as Git
- Good understanding of browser rendering behavior and performance
- 8+ years of experience with one of the top frontend frameworks - React (preferred) and with App development (recommended)
- Demonstrated experience in managing successful engineering teams across both web and app development
- Solid understanding of modern CSS methodologies like SCSS, SASS
- Exposure to latest developments in UI development like PWA, Single Page Apps, Hybrid Apps, Responsive web design etc
- Deep understanding of Javascript topics including the V8 Engine, Async, Memory
- Management, Duplex Communication.
- Understanding of app development practices
- Prior startup experience is a plus
We are looking for an experienced 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 a quality
product are important.
Must have:
● Strong proficiency in JavaScript, including DOM manipulation and the JavaScriptobject
model.
● Thorough understanding of React.js and its core principles
● Experience with popular React.js workflows (such as Flux or Redux)
● Understanding of CSS pre-processing platforms, such as LESS and SASS
● Knowledge of CSS frameworks, (such as Material UI, Bootstrap)
● Knowledge of RESTful APIs
● Experience with common front-end development tools such as Babel, Webpack,NPM,
etc.
● Ability to understand business requirements and translate them into technical
requirements.
● Experienced with code versioning tools such as GIT
Good to have.
● Familiarity with newer specifications of ECMAScript
● Familiarity with modern authorization mechanisms, such as JSON Web Token
● Familiarity with Angular (non-mandatory)
Roles and 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.
Work Nature:
1. Understanding Business Requirements and converting those requirement in to Web Pages using HTML, CSS, JS and Photoshop/Illustrator.
2. Should have minimum 5 Web Page Designed/Shipped/Live
3. Can mentor/lead junior webpage designers regarding best practices
Desired Traits
1. Coachable, Flexible, and Embracing of Suitable Practices and Feedback as a means of
continuous improvement.
2. Ability to take initiative and work independently as well as in a team environment.
3. Able to demonstrate Integrity, Drive, and Natural Curiosity.
4. Experience in a good web agency is a plus.






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