IDfy - Full Stack Developer - Javascript/TypeScript (3-6 yrs)

Fullstack Developer

Responsibilities :

- Design and implement efficient, reusable, and reliable frontend components.

- Optimize web applications using advanced frontend performance techniques, such as lazy loading, virtual windowing for large lists, and bundle optimization.

- Develop dynamic and responsive interfaces using HTML5 CSS3 and advanced DOM manipulation techniques.

- Leverage Browser API sand handle complex scenarios like iframe embedding, cross-domain communication.

- Implement secure and performant cookie handling practices and manage cross-domain communications securely.

- Collaborate with the backend team to design and implement simple RESTful APIs and integrate them seamlessly with the frontend.

- Collaborate with Product and Design to build intuitive and user friendly interfaces to translate user requirements into scalable solutions.

- Debug and resolve performance bottlenecks across browsers and devices.

- Stay updated with the latest frontend trends, frameworks, and tools.

The core requirements for the job include the following :

Frontend Skills :

- Proficient in JavaScript (ES6+), TypeScript; Knowledge of any modern library or frameworks is an advantage (e. g., React, Vue.js, or SolidJS/Angular).

- Working knowledge of web-workers and service-workers

- Deep understanding of the Document Object Model (DOM), DOM Events and its applications and manipulation.

- Expertise in HTML5 including semantics, accessibility, and web standards.

- Strong CSS skills, including layouts (Flexbox, Grid), animations, and pre-processors like SASS or LESS.

- Solid understanding of browser rendering pipelines and performance optimization techniques (e. g., lazy loading, virtual windowing, and code splitting).

- Knowledge of common frontend patterns such as debouncing, module patterns, and proxy patterns to create reusable and maintainable JavaScript components.

Build and Performance Optimization :

- Hands-on experience with module bundlers like Webpack, Vite, or Rollup.

- Knowledge of tree-shaking, code splitting, and other best practices for optimizing frontend assets.

- Expertise in building scalable applications with large data sets using techniques like virtual DOM and virtual scrolling.

Browser and Security Awareness :

- Proficiency with Browser APIs, including Web Storage, Device API, Service Workers, and Canvas API.

- Experience managing cookies with emphasis on secure attributes like HTTP-only, Same Site, and Secure flags.

- Understanding and implementation of cross-domain communication via frames and secure practices for handling such scenarios.

Backend Awareness :

- Ability to design and implement simple backend APIs using any backend technology (Elixir/Phoenix knowledge is a plus).

- Basic understanding of API authentication mechanisms (e. g., JWT, OAuth).

General :

- Strong understanding of event loop concepts and their implications on frontend performance and responsiveness.

- Excellent debugging and problem-solving skills.

- Familiarity with Agile methodologies and CI/CD practices.

- Strong written and verbal communication skills.