JOBWAVE VERIFIED

JavaScript Lead Developer

Company / Recruiter: Not specified
Recruiter Contact: [email protected]
Job ID: Not provided
Location: Bangalore, India
Work Mode: Not specified
Experience Required: 5–8 Years
Employment Type: Not specified
Salary / CTC: Not specified
Interview Process: Virtual Drive → Final Face-to-Face Interview
Role Type: Lead Developer / Full-Stack Engineering
Core Domain: JavaScript, React.js, Node.js, Frontend Architecture, Full-Stack Development

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JOBWAVE INSIGHTS

Who Is This Role For?

This position is suited to an experienced JavaScript developer with strong frontend and backend development skills, modern application architecture knowledge, and experience improving code quality, performance, and delivery pipelines.

The role is particularly relevant for developers who have worked with React.js, Node.js, TypeScript, and CI/CD tools such as Jenkins.

Key Skills

• JavaScript ES6+ and TypeScript
• React.js and modern frontend architecture
• Node.js and full-stack development
• HTML5, CSS3, and responsive UI development
• RESTful API design and integration
• CI/CD pipelines, Groovy, and Jenkins
• Git workflows and version control
• Design patterns and code quality practices
• Frontend performance optimization
• Application architecture

Priority Skills

Highest Priority — Mandatory

1. JavaScript ES6+ and TypeScript
2. React.js and modern frontend architecture
3. Node.js and full-stack development
4. HTML5, CSS3, responsive UI, and performance optimization
5. RESTful APIs and application architecture
6. CI/CD pipelines, Groovy, and Jenkins
7. Git workflows, design patterns, and code quality

Strong Advantages — Good to Have

• Cloud platforms: AWS, GCP, or Azure
• Monitoring and observability: Grafana and Prometheus
• AI-assisted development workflows
• SQL and NoSQL databases
• Application security best practices
• Scalable application development
• Python frameworks
• Package and module development

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JOB DETAILS

Role Overview

The JavaScript Lead Developer role focuses on building and maintaining modern web applications using JavaScript, TypeScript, React.js, and Node.js. The position also emphasizes application architecture, performance, code quality, and automated software delivery.

The advertised experience range is 5–8 years, with a virtual interview drive followed by a final in-person interview.

Core Responsibilities — Inferred from the Required Skills

1. Frontend Development

• Develop responsive web interfaces using React.js, JavaScript, and TypeScript.
• Build reusable UI components and maintainable frontend architecture.
• Optimize rendering, loading speed, and overall application performance.
• Follow HTML5, CSS3, accessibility, and responsive design practices.

2. Backend and API Development

• Build backend functionality using Node.js.
• Develop and integrate RESTful APIs.
• Structure applications using suitable architectural patterns.
• Work with SQL or NoSQL databases where required.

3. Architecture and Code Quality

• Apply design patterns and maintain clean, reusable code.
• Improve application maintainability, scalability, and reliability.
• Follow Git workflows, code review practices, and quality standards.
• Apply security best practices during development.

4. CI/CD and Engineering Practices

• Work with Jenkins and Groovy-based pipeline configurations.
• Support automated build, test, and deployment workflows.
• Improve development and release processes.
• Use monitoring and observability tools where applicable.

Note: These responsibilities are inferred from the listed skills; the original posting does not provide a detailed responsibilities section.

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REQUIREMENTS

Experience

• 5–8 years of professional development experience.
• Strong hands-on experience with JavaScript ES6+ and TypeScript.
• Experience developing applications using React.js and Node.js.
• Knowledge of API integration and application architecture.
• Experience with CI/CD pipelines and engineering best practices.

Preferred Skills

• Experience with AWS, GCP, or Azure.
• Familiarity with Grafana, Prometheus, or similar monitoring tools.
• Experience with AI-assisted development workflows.
• Knowledge of SQL/NoSQL databases and application security.
• Exposure to Python frameworks and package/module development.

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QUALIFICATIONS

Education: Not specified in the job post.
Mandatory Technical Stack: JavaScript ES6+, TypeScript, React.js, Node.js, HTML5, CSS3, RESTful APIs, Groovy, Jenkins, and Git.
Cloud Experience: Preferred, not mandatory.
Observability Experience: Preferred, not mandatory.
Python Experience: Preferred, not mandatory.

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POTENTIAL GAPS TO CHECK

Before applying, evaluate your experience in these areas:

• Strong TypeScript usage in production applications
• React component architecture, hooks, state management, and performance
• Node.js backend development and API design
• Full-stack application architecture
• Jenkins pipelines and Groovy scripting
• Git branching, pull requests, and code review workflows
• Design patterns and maintainable code
• Responsive design and frontend optimization
• Security, scalability, and database fundamentals

Important: The title includes “Lead Developer,” but the post does not specify team size, people-management responsibilities, mentoring expectations, or years of leadership experience. Clarify these points with the recruiter.

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INTERVIEW PREPARATION

Phase 1 — JavaScript and TypeScript

Prepare:

• Closures, scope, hoisting, and the event loop
• Promises, async/await, and error handling
• ES6+ features and module systems
• TypeScript interfaces, generics, utility types, and type narrowing
• Memory management and common performance issues

Phase 2 — React.js and Frontend Architecture

Prepare:

• Functional components, hooks, and component lifecycle concepts
• State management and data flow
• Rendering behavior, memoization, and performance optimization
• Reusable component and folder architecture
• API integration, error handling, and loading states
• Responsive UI development and accessibility

Phase 3 — Node.js and Application Architecture

Prepare:

• Node.js event loop and asynchronous programming
• Express or other relevant Node.js frameworks
• REST API design, validation, authentication, and authorization
• Error handling, logging, and testing
• SQL versus NoSQL trade-offs
• Security, scalability, and design patterns

Phase 4 — CI/CD and Engineering Practices

Prepare:

• Jenkins pipeline stages and Groovy fundamentals
• Build, test, and deployment automation
• Git branching strategies and pull request workflows
• Unit, integration, and end-to-end testing
• Code quality, debugging, and performance troubleshooting
• Monitoring and observability fundamentals

Final Interview Focus

Because this is a lead-level position, prepare examples of:

• A full-stack application you designed or significantly improved
• A difficult production issue you diagnosed and resolved
• A measurable frontend or backend performance improvement
• A CI/CD process you implemented or optimized
• A technical decision where you compared alternatives and explained trade-offs
• How you review code, mentor developers, and maintain engineering standards

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APPLICATION DETAILS

Send your updated CV to: [email protected]

Include the following details in your application:

1. Updated CV
2. Current CTC
3. Expected CTC
4. Notice period
5. Current location

Recommended next step: Confirm the company name, exact work arrangement, salary range, and leadership expectations with the recruiter before proceeding.

Overall assessment: A strong match for a 5–8-year JavaScript full-stack developer with solid React.js, Node.js, TypeScript, and Jenkins experience. Cloud, observability, AI-assisted development, and Python are additional advantages rather than stated mandatory requirements.