React.js Developer

Job Title: Senior Frontend Developer (Angular) – L4

Location: Mumbai

Experience: 7–12 Years

Role Overview

We are seeking an experienced Angular Developer (L4 level) with strong expertise in modern frontend technologies to build scalable, high-performance web applications. The ideal candidate will have deep experience in Angular, TypeScript, RxJs, ngRx, and a strong focus on unit testing and code quality.

Key Responsibilities

• Develop and maintain complex web applications using Angular (latest versions)
• Write clean, scalable, and maintainable code using TypeScript
• Implement reactive programming patterns using RxJs
• Manage application state effectively using ngRx (Store, Effects, Reducers)
• Design and implement reusable, performant UI components
• Ensure high code quality through unit testing (Jasmine/Karma or similar)
• Collaborate with backend teams, UX designers, and product stakeholders
• Optimize applications for maximum performance and scalability
• Participate in code reviews, architecture discussions, and technical decision-making
• Troubleshoot and debug complex application issues

Required Skills

• Strong experience with Angular (v10 or above preferred)
• Proficiency in TypeScript, JavaScript (ES6+)
• Hands-on expertise in RxJs (Observables, Operators, Subjects)
• Solid understanding of ngRx architecture and state management concepts
• Experience in Unit Testing frameworks (Jasmine, Karma, Jest, etc.)
• Knowledge of REST APIs and integration
• Familiarity with HTML5, CSS3, SCSS, and responsive design
• Understanding of frontend performance optimization techniques
• Experience with Git/version control systems

Preferred Qualifications

• Experience with CI/CD pipelines
• Exposure to micro-frontend architecture
• Knowledge of Agile/Scrum methodologies
• Familiarity with AWS/Azure or cloud-based deployments
• Strong problem-solving and analytical skills
• Behavioral Competencies
• Strong communication and collaboration skills
• Ability to mentor junior developers
• Ownership mindset and attention to detail
• Adaptability in a fast-paced environment

Seniority Level

L4 (Senior Individual Contributor)

Expected to drive modules independently and influence technical decisions

What We’re Looking for in You:

1. Qualifications: Bachelor’s Degree in Computer Science, Information Technology, or a related field

2. Certifications: NA

3. The Experience That Sets You Apart:

● Lead the development of responsive, pixel-perfect web interfaces using HTML, CSS, and JavaScript.

● Set and maintain frontend coding standards, structure, and best practices

● Collaborate with designers to bring UI/UX concepts to life with clean, maintainable code. ● Optimize web pages for performance, SEO, and cross-browser/device compatibility.

● Guide and mentor junior developers through code reviews and technical support.

● Own project timelines, quality assurance, and delivery for all frontend initiatives

4. Your Subject Matter Expertise:

● Team leadership — 2+ years leading 10+ member teams

● Strong communicator — aligns tech and non-tech teams

● Detail-driven — ensures UI and code precision

● Collaborative — fosters teamwork and mentorship

● Organized — manages time and parallel tasks efficiently

● Service-based mindset — experience in ~200-employee setups

● Composed under pressure — delivers in fast-paced environments

● Solution-focused — navigates challenges with clarity

Job Description:

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.

Employer:

RaptorX.ai

Location:

Hyderabad

Department:

IT Development

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.

• Core Javascript, HTML, CSS, JSON understanding is mandatory
• Expertise of functional programming using JavaScript (ES5, ES6)
• Expertise of UI framework - React / Redux, RXJS
• Preferred experience with new generation of Web Programming - using Micro Service, REST/JSON, GraphQL and Component UI models
• Expertise with data visualization flow development along with usage of modern charting and graphical java script libraries
• React / Redux, RXJS, HTML, CSS, Javascript (ES5, ES6), Data visualization and Chart Libraries
• Data Structure and Design Pattern
• Strong knowledge of JSON data handling, GraphQL and their working

• Create high-quality HTML files based on the latest HTML5.
• Conducting website performance and usability tests.
• Troubleshoot any issues with the website.
• Meeting publication deadlines.

• In-depth knowledge of front-end coding languages including HTML, CSS, JavaScript, and JQuery.
• Familiarity with CSS preprocessors such as Sass and Less.
• Strong attention to detail.
• Experience with Photoshop, Illustrator, Figma, or other graphic design and layout tools.

Work Location: Hyderabad

J.D:

• Minimum 3+ years of professional experience in Angular 2+ and above, React JS and scripting Language.
• Excellence in modern JavaScript, HTML5 and design patterns.
• Thorough understanding of the responsibilities of the platform, database, API, caching layer, proxies, React testing library, server side rendering, and Type script.
• Validating user input on the client side and implementing meaningful feedback.
• Skill in designing a modern build process that integrates testing and continuous delivery.
• Hands-on experience with creating configuration, build, and test scripts for continuous integration environments.

About the role:
We’re looking for a React.Js Developer who can adapt to new tech stacks and innovate with cutting-edge technology solutions, to build eCommerce platforms that are unique, disruptive, and powerful

What you'll do:
● Develop new user-facing features using React.js
● Build reusable components and front-end libraries for future use
● Translate designs and wireframes into high-quality code
● Optimize components for maximum performance across a vast array of web-capable devices and browsers

What you'll need:
● Bachelor's degree with minimum 3 years of work experience as a React Js
● Strong proficiency in JavaScript or Typescript, including DOM manipulation and the JavaScript object model
● Experience with data structure libraries (e.g., Immutable.js)
● Knowledge of object-oriented programming
● Experience with popular React.js workflows (such as Flux or Redux)
● Integration of multiple data sources and databases into one system
● Familiarity with newer specifications of EcmaScript
● Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
● Ability to understand business requirements and translate them into technical requirements

Who Should Consider Joining:
● If you like challenges and think from a first principle basis,
● If you are driven to take ownership and are adept at rolling with the punches,
● If you have the aspiration to grow fast in the dynamic environment of a start-up,
● If you are a collaborative team member, who believes in collective success,
● If you are someone who makes objective, fact-based decisions

Who should not consider joining:
● If the role description does not excite you, then you should not join us
● We are a startup and things will move fast. If you are not comfortable in a fast-paced environment, then you should not join us
● If you are not a self-starter who is willing to learn & experiment more, then you should not join us.

What We Offer:
● Limitless growth and learning opportunities
● Exposure to cutting edge technology solutions and upcoming stacks in the market
● In house technical training on GIT, Automated Testing, Code Coverage, Language Training and much more
● A collaborative and positive culture — Your team will be as smart and driven as you.
● Guidance and mentorship from industry experts and renowned IIT Alumnus
● An opportunity to make an impact — Your work will contribute directly to our strategy and growth