Frontend Developer-React JS

Web Application Developer

Job Description

Educational Qualifications:

Post-Graduation (Preferred): MCA/MSc/M.Tech. (Computer Science, Information Technology, Electronics).

Graduation (Mandatory): BE/B.Tech. (Computer Science, Information Technology, Electronics).

Certifications:

Relevant certification(s) would be an added advantage

Total Experience:

5+ years

Positions:

2

Work Experience:

• 5+ years of experience with designing and building web applications using Java and Angular JS

• 3+ years of experience in writing JavaScript, CSS, and HTML

• 3+ years of experience in developing application codes and unit tests in AngularJS, Java Technologies, and Rest Web Services

• 3+ years of experience contributing to the architecture and design (architecture, design patterns, reliability and scaling) of new and current systems

• Experience developing complex software systems from the ground up, that have been successfully delivered to customers

• Proficient in CSS, HTML, and writing cross-browser compatible code

• Experience using JavaScript building tools like Gulp/ Grunt etc.

• Knowledge of JavaScript MV-VM/MVC frameworks including AngluarJS

• Experience in communicating with users, other technical teams, and management to collect requirements, describe software product features, and technical designs

• Experience in software processes, web services, multi-tiered systems, workflow modeling, systems testing, and enterprise application integration

Tools & Techniques:

• Strong experience with Java and Angular JS

• Strong experience with distributed (multi-tiered) systems, algorithms, and relational/non-relational databases

• Strong knowledge in OOPS concepts and very good debugging skills

Personality traits (desired):

• Excellent analytical and reasoning skills

• Excellent verbal and written communication skills

• Ability to communicate with both business stakeholders and technical teams

• Ability to take full ownership of tasks and willingness to learn and experiment with new technology

• Ability to synthesize requirements underlying feature requests, recommend alternative technical and business approaches, and facilitate engineering efforts to meet aggressive timelines

Responsibilities:

• Prepare technical requirements, software design specifications and unit test cases

• Design, code and modify webpages, from layout to function and according to the design specifications

• Upgrade, configure and debug existing web applications

• Create reusable, effective, and scalable code

• Identify bottlenecks and bugs in the system and develop solutions

• Adapt interface for modern internet applications using the latest front-end technologies

• Take ownership and responsibility of components/processes within the team

• Support other developers with code review, etc.

The Opportunity At Certa, we are building the AI-native Operating System for global enterprise relationships. We have the clients (Fortune 100/500) and the robust backend technology. Now, under the guidance of our new Head of Design, we are elevating our experience to match the best consumer products in the world. We are looking for our First Design Engineer. You are the "missing link" between our pragmatic engineering requirements and our ambitious design vision. You won't just implement tickets; you will define how our product feels.

The Role This is not a standard Frontend Engineer role, nor is it a Product Designer role. This role is equal parts: Craft-focused Frontend Engineering: You write production-grade code, but you obsess over the details that others miss. Systems Thinking: You don't just build components; you build the architecture (Design System) that allows the rest of the team to build beautiful UI faster. Figma-to-Code Mastery: You bridge the gap between static Figma files and dynamic browser realities, moving fluidly between design and implementation.

What You Will Do

1. Architect the Design System & UI Patterns Take ownership of our internal design system. You will treat it as an internal product, creating a type-safe, accessible, and composable library in React & TypeScript. Manage the tokens, components, patterns, documentation, and governance required to scale design across a remote engineering team. Bridge the gap between Figma Variables/Tokens and code, ensuring a single source of truth for our visual language.
2. Make AI-Native UX Feel Trustworthy & Human Implement interaction patterns specifically for AI workflows: streaming states, progressive disclosure, and optimistic UI. Build for "explainability" and human-in-the-loop controls, ensuring users trust the system even when it automates complex tasks. Make complexity feel simple—especially when the system is performing sophisticated "smart" operations in the background.
3. Maximize Output with AI-Assisted Tooling Hyper-automate the mundane: Use AI coding assistants (Cursor, Copilot, etc.) to handle boilerplate and scaffolding, allowing you to spend 80% of your time on the 20% of the "feel" and "craft." Build tooling and guardrails (linting rules, visual checks, component playground workflows) that help the team ship high-fidelity UI consistently.
4. Bridge Design & Code (Figma-First) Live in Figma: You are expected to be as comfortable in Figma as you are in VS Code. You’ll tweak layouts, design missing states, and refine prototypes yourself. Push performance beyond just metrics: focus on rendering, bundle size, perceived speed, and interaction responsiveness. Raise the bar on accessibility and cross-browser behavior, ensuring the product is usable by everyone.

Must Haves

1. Expert Figma Skills: This is a primary requirement. You should be fluent in auto-layout, components, variables, and prototyping. You view Figma as a design environment and a technical spec.
2. AI-Assisted Workflow: You are a "power user" of AI tools (Cursor, Copilot, v0, etc.). You know how to leverage AI to move faster without sacrificing the quality of the final output.
3. Strong Frontend Foundation: Deep expertise in React + TypeScript with a track record of shipping complex, data-heavy UIs in production.
4. Demonstrated UI Craft: A portfolio showing obsession with spacing, typography, interaction detail, and motion. You likely have a "Folder of Inspiration" from the best apps in the world.
5. Design System Experience: Strong experience building and maintaining a design system: tokens, components, patterns, and documentation.
6. Accessibility Expertise: You build keyboard-first UX, understand screen reader behavior, and enforce correct ARIA usage by default.
7. Modern Tooling: Experience with Vite and modern frontend tooling; comfortable setting up and customizing JS tooling/build systems.

Why You? (The "Craft" Factor)

1. You are inspired by the design-engineering cultures of companies like Linear, Vercel, Family, or Arc (The Browser Company).
2. You get annoyed when a modal closes without an exit animation.
3. You understand that latency is a UX problem, and you use optimistic UI updates to make the app feel instant.
4. You believe enterprise software doesn't have to look like a spreadsheet from 2005—it should feel as fluid as the best consumer apps.
5. You are an "AI-augmented" engineer who uses modern tools to do the work of three people while maintaining the taste of an artisan.

1. Solid technical skills with a proven and successful history working as a Front End Developer
2. Experience & Knowledge in Angular, React & Vuejs
3. Good working knowledge on Bootstrap, CSS, HTML5, JavaScript and TypeScript
4. Excellent interpersonal abilities, communication skills, time management and Team skills with an intention to work hard to meet project deadline

Requirements:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model.
• Experience with Core web fundamentals: HTML, JavaScript, and CSS like Sass or LESS
• Thorough understanding of ReactJS and its core principles.
• Experience with popular ReactJS state management such as Redux or Flux
• Familiarity with newer specifications of EcmaScript (ES6+)
• Familiarity with RESTful APIs consumption
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Ability to understand business requirements and translate them into technical requirements
• Familiarity with code versioning tools such as GitLab, Bitbucket
• Must be passionate about writing clean, efficient, and maintainable code
• Self-starter with the ability to cope with sharp learning curves.
• Excellent teamwork skills,
• Good Communication skill

Good to have:

• Familiarity with NextJs framework.
• Experience with Unit Testing with Jest
• Typescript
• GetsByJS
• Modern front-end build pipelines and tools GitLab or Jenkins
• CI-CD Using GitLab or Jenkins

Roles and Responsibilities

• Looking only for Front end Developer with Minimum 1 Year experience in ReactJS
• Good communication skills
• 3-4 years
• Working on different React Technologies along with HTML/CSS, RESTful APIs, 

PLEASE NOTE - WE ARE LOOKING FOR CANDIDATES WHO ARE IMMEDIATE JOINERS OR WHO CAN JOIN WITHIN 15 DAYS

• 2-7 years of experience in Mobile application development domain
• A minimum 2 years of React native production level dev experience
• At least 2 React native published apps
• A firm grasp of the JavaScript language and its nuances, including ES6+ syntax
• An expert level knowledge of React Native, Redux, Rx & related stack
• An excellent knowledge of Tools
• Some native Android & iOS development experience (preferable)

• Ability to design the overall architecture of UI components of the web application.
• Maintain quality and ensure responsiveness of applications.
• Collaborate with the rest of the engineering team to design and launch new features.
• Maintain code integrity and organization.
• Experience working with graphic designers and converting designs to visual elements using JavaScript, HTML, and CSS.
• Understanding and implementation of security and data protection.
• Good problem-solving skills and willingness to learn new technology

Qualifications:-

• 2+ year track record of relevant work experience and a Computer Science or a related technical discipline is required
• Excellent knowledge of JavaScript
• Proficient experience in ReactJS.
• OOPS, Concept, and Data Structure like Queue, Stack, Tree, Linked List, etc.
• Good knowledge in working with REST APIs
• Knowledge of converting designs to working web pages using HTML and CSS.
• Experience in Architecture and delivery of web applications.
• Knowledge of code versioning tool – Git

Good to have:

• Experience in AngularJS
• Experience in server-side programming

Previous experience as a UI Engineer.

Must have hands-on knowledge of web 2.0, including HTML5, CSS3
Must have hands-on knowledge of server-side CSS pre-processing platforms, such as SASS/LESS
Must have hands-on knowledge in JavaScript frameworks like Object Oriented JS, Typescript (ECMAScript 6)
Good understanding of asynchronous request handling, partial page updates, and AJAX
Good understanding of REST API Proficient understanding of cross-browser compatibility issues and ways to work around them.
Proficient understanding of code versioning tools, such as Git
Working knowledge of design specs (style guide) tools like Zeplin, Invision etc.