React.js Developer

Job Title : Lead Web Developer / Frontend Engineer

Experience Required : 10+ Years

Location : Bangalore (Hybrid – 3 Days Work From Office)

Work Timings : 11:00 AM to 8:00 PM IST

Notice Period : Immediate or Up to 30 Days (Preferred)

Work Mode : Hybrid

Interview Mode : Face-to-Face mandatory (for Round 2)

Role Overview :

We are hiring a Lead Frontend Engineer with 10+ Years of experience to drive the development of scalable, modern, and high-performance web applications.

This is a hands-on technical leadership role focused on React.js, micro-frontends, and Backend for Frontend (BFF) architecture, requiring both coding expertise and team leadership skills.

Mandatory Skills :

React.js, JavaScript/TypeScript, HTML, CSS, micro-frontend architecture, Backend for Frontend (BFF), Webpack, Jenkins (CI/CD), GCP, RDBMS/SQL, Git, and team leadership.

Core Responsibilities :

• Design and develop cloud-based web applications using React.js, HTML, CSS.
• Collaborate with UX/UI designers and backend engineers to implement seamless user experiences.
• Lead and mentor a team of frontend developers.
• Write clean, well-documented, scalable code using modern JavaScript/TypeScript practices.
• Implement CI/CD pipelines using Jenkins, deploy applications to CDNs.
• Integrate with GCP services, optimize front-end performance.
• Stay updated with modern frontend technologies and design patterns.
• Use Git for version control and collaborative workflows.
• Implement JavaScript libraries for web analytics and performance monitoring.

Key Requirements :

• 10+ Years of experience as a frontend/web developer.
• Strong proficiency in React.js, JavaScript/TypeScript, HTML, CSS.
• Experience with micro-frontend architecture and Backend for Frontend (BFF) patterns.
• Proficiency in frontend design frameworks and libraries (jQuery, Node.js).
• Strong understanding of build tools like Webpack, CI/CD using Jenkins.
• Experience with GCP and deploying to CDNs.
• Solid experience in RDBMS, SQL.
• Familiarity with Git and agile development practices.
• Excellent debugging, problem-solving, and communication skills.
• Bachelor’s/Master’s in Computer Science or a related field.

Nice to Have :

• Experience with Node.js.
• Previous experience working with web analytics frameworks.
• Exposure to JavaScript observability tools.

Interview Process :

1. Round 1 : Online Technical Interview (via Geektrust – 1 Hour)

2. Round 2 : Face-to-Face Interview with the Indian team in Bangalore (3 Hours – Mandatory)

3. Round 3 : Online Interview with CEO (30 Minutes)

Important Notes :

• Face-to-face interview in Bangalore is mandatory for Round 2.
• Preference given to candidates currently in Bangalore or willing to travel for interviews.
• Remote applicants who cannot attend the in-person round will not be considered.

Job Responsibilities

• Develop and maintain reusable components and front-end libraries for future use.
• Translate designs and wireframes into high-quality, responsive UI components.
• Optimize components for maximum performance across different browsers and devices.
• Implement ReactJS best practices using Hooks, HOCs, and Functional Components.
• Manage state efficiently using Redux/Flux.
• Collaborate with backend developers to integrate REST APIs.
• Debug and test applications using Mocha & Jest.
• Ensure code quality, maintainability, and scalability using modern front-end tools.

Required Skills & Qualifications

✔ 3+ years of experience in ReactJS development.

✔ Strong knowledge of JavaScript, DOM, JSX.

✔ Hands-on experience with React Hooks, HOCs, and Functional Components.

✔ Expertise in ES6+ concepts (Arrow functions, Destructuring, Spread/Rest operators, Classes, Import/Export).

✔ Experience in HTML, CSS, and responsive design.

✔ Familiarity with REST APIs and integrating backend services.

✔ Experience with state management (Redux/Flux).

✔ Strong debugging skills using Mocha & Jest for performance testing.

✔ Hands-on experience with Git, Webpack, Babel, NPM.

Good to Have:

➕ Experience with backend development (Java, Microservices).

➕ Knowledge of modern authentication mechanisms (JWT, OAuth).

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.

1. We are looking for candidates who have good programming skills. Strong on data structures, algorithms, understand time space complexity, able to come up with multiple solutions and then arrive at most optimized one keeping in mind customer requirements. Should also be well aware of OO concepts. If he / she has a strong background on these areas ( in any programming language),
2. Next the candidate should have worked on JS  with good hands on experience in a few projects mainly in backend development like making api calls, handling exception, models, data transformations, controllers etc. 
3. The last would be having some experience in any one of react.js/ node.js or even angular.js since some of these are being used in the current project. 
4. Prefer candidates with Angular (ver 8+), react.js (ver 16+), Node (Ver 14+) and extremely good in JavaScript, HTML & CSS
5. Experience : 3-6 years relevant

Job Description:

We are looking for a good 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 quality product is important.

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

Skills:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles
• Experience with popular React.js workflows (Redux)
• Familiarity with newer specifications of ECMAScript
• Experience with data structure libraries (e.g., Immutable.js)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial)

1. Work closely with our customers to understand their needs and build high-quality user interfaces.
2. Build, test and ship dashboards using frameworks like React, ES6, and Webpack.
3. Work with engineers and senior leadership to turn our vision into a tangible roadmap every quarter.
4. Add positive energy in every meeting or interaction with your coworkers.

Minimum Qualifications

1. B.E/B.Tech/M.Tech in CS/CE/IT
2. Must-have requirements for candidates include proficiency in the following areas/aspects:
3. Git version control system
4. Ability to collaborate and communicate complex technical concepts.
5. Experience working with charting libraries (i.e. ChartJS, Chartist, Grafana).
6. Experience with ReactJS 
7. Experience building highly scalable, high performance, responsive web applications
8. Experience in fundamental front end web technologies including but not limited to HTML, CSS, JavaScript - Minimum work experience 2 years

Languages/Frameworks

Javascript, React, HTML/CSS

Preferred Qualifications

1. Experience building, adopting and maintaining RESTful APIs.
2. A passion for all things UI and Front End
3. Ability to work in a fast-paced and agile development environment
4. Strong customer focus and obsession with quality
5. Experience working with UI for data-heavy products. 

Job Summary
. Developing the latest user-facing features using React.js
· Designing a modern highly responsive web-based user interface
· Building reusable components and front-end libraries for future use
· Translating designs and wireframes into high-quality code
· Learn and understand user interactions
· Optimizing components for maximum performance across a vast array of web-capable devices and browsers
· Coordinating with various teams working on distinct layers
· As a React.js Developer, you will be involved from conception to completion with projects that are technologically sound and aesthetically impressive.

Technical skills:
· Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
· Thorough understanding of React.js and its core principles
· Ability to create a reusable stateful component using React hooks
· Prior experience with popular React.js workflows (such as Flux or Redux)
· Familiarity with more current specifications of EcmaScript
· Prior experience with data structure libraries (e.g., Immutable.js)
· Knowledge of isomorphic React is a plus
· Familiarity with RESTful APIs
· Familiarity with HTML / CSS
· GIT experience is a plus
· Knowledge of modern authorization mechanisms, such as JSON Web Token
· Familiarity with modern front-end build pipelines and tools
· Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
· Familiarity with working with the siren-JSON schema for generating forms.
· Familiarity with react-hook-form
· Ability to understand business requirements and translate them into technical requirements
· A knack for benchmarking and optimization
· Familiarity with code versioning tools
· jest and enzyme for red-green tdd
· understanding of feature flag
· lint and husky hooks