Big Happy

Delivers geo-targeted mobile ads for brands

Front End Developer

Frontend EngineeringUpdated on Nov 14

Full-timePanchkula, Haryana, India₹550k - ₹850k /yr

About the Job

Requirements

Proven experience as a Front-end Developer with a strong portfolio showcasing responsive and interactive web applications.
Strong knowledge of HTML5, CSS3, and Vanilla JavaScript.
Experience building responsive, mobile-first web applications.
Strong understanding of web performance optimization and security.
Proficiency integrating RESTful APIs and handling JSON data for dynamic interfaces.
Experience with front-end build tools such as Webpack.
Familiarity with version control systems like Git, including branching and conflict resolution.
Knowledge of cross-browser compatibility issues and modern solutions.
Proficiency with TypeScript and its integration into JavaScript frameworks.
Proficiency in English for effective collaboration and documentation.

Responsibilities

Design and develop dynamic, responsive, and interactive web applications using HTML5, CSS3, and JavaScript (ES6+).
Collaborate with UI/UX designers to transform wireframes and designs into functional, visually appealing user interfaces.
Write clean, maintainable, and efficient code while adhering to best practices in performance optimization and accessibility.
Build reusable components and front-end libraries to support scalability and consistency across projects.
Integrate front-end interfaces with backend services and APIs for seamless data communication.
Optimize web applications for performance, accessibility, and mobile responsiveness.
Participate in code reviews to uphold high-quality development standards.
Utilize version control tools such as Git and participate in CI/CD workflows.
Stay abreast of industry trends, emerging technologies, and modern development tools to continuously improve processes and products.

Desired Qualifications

Experience with state management libraries like Redux.
Proficiency in graph libraries like D3.js or Canvas.js for data visualization.
Experience with Agile methodologies and tools like monday.com for task management.
Working knowledge of WebGL or frameworks like Three.js for 3D rendering.
Familiarity with advanced React.js libraries and ecosystem tools, such as Next.js and React Query.
Familiarity with CSS preprocessors such as SASS.
Basic knowledge of Linux, including command-line operations and basic scripting.

We are seeking a highly skilled and creative Front-end Developer to join our dynamic team. You will play a pivotal role in developing visually stunning, responsive, and user-centric web interfaces. Collaborating closely with UI/UX designers and backend developers, you will ensure seamless integration, outstanding performance, and a delightful user experience across multiple platforms.

The ideal candidate will have strong technical expertise with modern front-end technologies, a keen eye for design, and the ability to craft intuitive, functional, and scalable web applications. If you are passionate about building cutting-edge web interfaces and delivering top-notch user experiences, we’d love to hear from you!

Preferred experience range : 2-4 Years
NOTE: Candidates must be open to work within USA time zones EST/EDT and PST/PDT hours.

Responsibilities:

Design and develop dynamic, responsive, and interactive web applications using HTML5, CSS3, and JavaScript (ES6+).
Collaborate with UI/UX designers to transform wireframes and designs into functional, visually appealing user interfaces.
Write clean, maintainable, and efficient code while adhering to best practices in performance optimization and accessibility.
Build reusable components and front-end libraries to support scalability and consistency across projects.
Integrate front-end interfaces with backend services and APIs for seamless data communication.
Optimize web applications for performance, accessibility, and mobile responsiveness.
Participate in code reviews to uphold high-quality development standards.
Utilize version control tools such as Git and participate in CI/CD workflows.
Stay abreast of industry trends, emerging technologies, and modern development tools to continuously improve processes and products.

Requirements:

Proven experience as a Front-end Developer with a strong portfolio showcasing responsive and interactive web applications.

Strong Knowledge of HTML5, CSS3, and Vanilla JavaScript.
Experience in building responsive, mobile-first web applications.
Strong understanding of web performance optimization and security.
Proficiency in integrating RESTful APIs and handling JSON data for dynamic interfaces.
Experience with front-end build tools such as Webpack.
Familiarity with version control systems like Git, including branching and conflict resolution.
Knowledge of cross-browser compatibility issues and modern solutions.
Excellent problem-solving skills and a detail-oriented approach to debugging and troubleshooting.
Strong collaboration skills, with the ability to work effectively with designers, backend developers, and cross-functional teams.
Proficiency with TypeScript and its integration into JavaScript frameworks.
Strong communication skills with proficiency in English for effective collaboration and documentation.

Preferred Skills (Bonus):

Experience with state management libraries like Redux.
Proficiency in graph libraries like D3.js or Canvas.js for data visualization.
Experience with Agile methodologies and tools like monday.com for task management.
Working knowledge of WebGL or frameworks like Three.js for 3D rendering.
Familiarity with advanced React.js libraries and ecosystem tools (e.g., Next.js, React Query).
Familiarity with CSS preprocessors such as SASS.
Basic knowledge of Linux, including command-line operations and basic scripting.

About the Company

Big Happy

Delivers geo-targeted mobile ads for brands

Big Happy creates engaging, fast mobile ads for brands across media, casual dining, CPG, and sports networks. Its ads use geo-targeted creative strategies to drive actions such as learning more about a product, adding items to a cart, or visiting physical stores, including activating ticket sales and promoting offers. The product works by providing creative services and campaign deployment, delivering tailored creative assets quickly and targeting users based on location to maximize impact. The company differentiates itself with a focus on fun, rapid delivery, and a team of media buyers and mobile ad tech experts who push the boundaries to achieve performance. Its goal is to raise engagement and deliver measurable results for brands, publishers, and consumers by making mobile advertising more enjoyable and effective.

Company size: 51-200
Company stage: Series A
Total funding: $2.7M
Headquarters: New York City, United States
Founded: 2019

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