Lead Frontend Engineer

Job Description: React Developer (3–5 Years Experience)

Location: Mumbai

Employment Type: Full-time

Role: Frontend Developer (React.js)

About the Role

We are looking for a highly skilled React Developer with 3–5 years of hands-on experience in building modern, scalable, and responsive web applications. The ideal candidate should be proficient in React.js, frontend architecture, state management, and UI best practices.

Key Responsibilities

• Develop responsive, high-performance web applications using React.js, JavaScript/TypeScript.
• Build reusable components and front-end libraries for future use.
• Work closely with UI/UX designers to convert wireframes and prototypes into functional user interfaces.
• Optimize applications for maximum speed, scalability, and cross-browser compatibility.
• Integrate RESTful APIs and work collaboratively with backend teams.
• Participate in code reviews and contribute to continuous improvement of best practices.
• Troubleshoot, debug, and enhance existing applications.
• Ensure high code quality through proper testing and documentation.

Required Skills & Experience

• 3–5 years of professional experience in React.js development.
• Strong proficiency in JavaScript (ES6+) and TypeScript.
• Hands-on experience with Redux, Context API, or other state-management libraries.
• Good understanding of HTML5, CSS3, SASS, and modern UI frameworks.
• Experience working with REST APIs, JSON, and asynchronous programming.
• Familiarity with build tools like Webpack, Vite, Babel, etc.
• Understanding of Git and version control workflows.
• Knowledge of React hooks, performance optimization, and component lifecycle.
• Experience with testing frameworks (Jest, React Testing Library) is a plus.

Good to Have

• Experience with Next.js or server-side rendering.
• Knowledge of UI libraries such as Material-UI, Ant Design, or Chakra.
• Familiarity with Agile/Scrum methodologies.
• Basic exposure to DevOps tools and CI/CD pipelines.

Why Join Us?

• Opportunity to work on cutting-edge technologies.
• Collaborative, fast-paced, and growth-oriented environment.
• Competitive compensation and employee benefits.

About One Impression

One Impression is one of the world’s largest influencer marketing platforms, working with 300+ global brands like Unilever, Nestle, and Amazon to connect with a diverse creator network. Our platform empowers brands and creators to collaborate seamlessly and scale their reach. To capture a significant share of global media ad spend, One Impression is quickly becoming the industry’s go-to influencer marketing platform.

About the Role

We are looking for a Frontend Engineer (SDE II) who is experienced in both React.js for Web and React Native for Mobile Apps. You will be responsible for architecting, implementing, and optimizing web and mobile applications while collaborating closely with Product, Design, and Backend teams.

This role is perfect for someone who enjoys working across platforms, building scalable systems, and enhancing the developer experience.

Key Responsibilities

• Architect and develop frontend solutions for both Web (React.js) and Mobile Apps (React Native).
• Build and optimize config-driven systems, reusable components, and common libraries.
• Work closely with Product Managers, Designers, and Backend Engineers to create seamless user experiences across platforms.
• Own and drive React Native-based mobile applications, ensuring modular, scalable, and performant code.
• Optimize web and mobile performance for speed, responsiveness, and efficiency.
• Set up and manage CI/CD pipelines for both web (Docker, Vercel) and mobile apps (Fastlane, App Store/Play Store).
• Implement and maintain state management using Redux, Redux Saga, Recoil, or MobX.
• Work with mobile-specific integrations, such as Firebase Push Notifications, Deep Linking, and Native Modules.
• Ensure cross-platform consistency by handling browser compatibility (web) and device compatibility (mobile).
• Write clean, maintainable, and reusable code, following best practices and design patterns.
• Debug and fix issues rapidly, ensuring a seamless Web & Mobile experience.
• Stay up-to-date with the latest trends and contribute to open-source projects, tech talks, and internal knowledge sharing.

Requirements

• 3-5 years of experience in frontend development, working with both React.js (Web) and React Native (Mobile).
• Strong expertise in JavaScript (ES6+), React.js, and React Native.
• Experience with bundlers like Webpack, Rollup, and Metro for React Native.
• Deep understanding of mobile CI/CD (Fastlane, App Store, Play Store) and web CI/CD (Docker, Vercel, Jenkins, GitHub Actions).
• Strong grasp of Web & Mobile performance optimization techniques.
• Experience with Redux, Redux Saga, MobX, or Recoil for state management.
• Good understanding of mobile UI/UX principles, animations (Reanimated, Gesture Handler), and responsive design.
• Basic familiarity with native iOS/Android development (Swift/Kotlin is a plus).
• Experience with Unit Testing (Jest, React Native Testing Library, Detox, Cypress, Appium, or Espresso).
• Strong debugging skills using Chrome DevTools (Web) and Flipper, Xcode, Android Studio (Mobile).
• Ability to work independently, take ownership of projects, and mentor junior engineers.
• Open to feedback and collaborative in working towards the best user experience.

Why Join One Impression?

- Be a part of one of the largest influencer marketing platforms globally, working with top brands and influencers.

- Opportunity to lead and shape a fast-growing marketplace product.

- Competitive salary and benefits package.

- A collaborative and innovative work culture in a rapidly scaling company.

Are you a front-end developer looking to fast-track your learning and growth? Have you looked at world class products like Asana, Notion, or Airtable, and felt “I wish I were part of the early team that built these products”?

We’re a team that has previously built and rolled out globally successful SaaS products used by tens of thousands of customers. We’re laser focused on delivering a world class new product again, and looking for an ambitious front-end engineer to join our existing team of 9 engineers.

If it excites you to think of a fast paced start-up environment, building something big from scratch, breaking down new problems, creating well structured UI components, executing on pixel perfect design, paying great attention to every little interaction detail, and doing demos of your work every Friday with a happy and passionate team, then this is the right opportunity for you.

Some of the tech problems you get to work-on as a front-end developer would include building real-time collaboration experiences across our product, building live document editing and modern spreadsheet experiences from scratch, creating flexible new Kanban-style views of work tasks, and crafting cool new UI components and interactions that we will use across our product.

About you:

• Knowledge in the following areas
• React
• SPA Framework patterns
• Hands-on experience in HTML, CSS, SASS & Object Oriented Javascript
• Worked with features provided by browsers (Caching / Storage / Compatibility etc )
  
  

Nice to have:

• Familiarity with AWS
• Experience with startups or early stage teams
• Knowledge of module bundlers like Webpack 

What’s in it for me?

• Great opportunity: Rocketlane genuinely cares about everyone we hire. You’ll learn new things and grow no matter how experienced you are; you will be working with founders who have more than three decades of collective experience in building significant B2B SaaS startups. 
• Great team: Work with a world-class, high-velocity team that truly embodies the values of empathy, curiosity, and customer-centricity. Check out thehttps://www.linkedin.com/feed/hashtag/?keywords=rocketlane_meet_the_team"> MTT(Meet The Team) videos on our LinkedIn. 
• Great culture: An open, fun, and exciting startup culture that empowers its people to champion big problems with the freedom to think and innovate.
• Growth:  You could easily and quickly transition into other sales roles you might like.
• Impact: You get to be part of a global, passionate team in a fast-paced and growth-oriented environment. The team has a work philosophy of being high on ambition, ownership, and a bias for action.
• Monetary rewards and benefits: Competitive salary, flexible leave policy, and more! 

Hello there! Infrrd here.

Haven't heard of us before? No problem. First off, it's pronounced In-fur-d.

We are the creators of a proprietary Intelligent Document Processing platform that automates data extraction from complex and messy unstructured documents. Something nobody has done before! And of course, were very proud of that.

For over a decade, we've been building expertise in Artificial Intelligence, Machine Learning, Deep Learning, Natural Language Processing, Neural Networks and much more. And what are we doing with this expertise?

Good question. We are building technology that is disrupting the data extraction space for 5+ years now. We have over 300 smart-as-a-whip colleagues working from all over the globe.

And now, we are on the lookout for a great UI Lead.

Must have skills:

1. 8+ years of experience in UI development.
2. Should have managed a team of 3-4 members
3. Proficiency in front-end web development tools, i.e., HTML, CSS, JavaScript, jQuery, and AJAX.
4. Experience in modern frameworks like Angular, React JS, Bootstrap, Node.js, etc.
5. Should have an eye for clean and artful design, possess superior UI skills and be able to translate high-level requirements into interaction flows and artifacts, and transform them into beautiful, intuitive, and functional user interfaces.
6. Demonstrated experience in developing and deploying high-volume, multi-tiered, distributed mission-critical applications.
7. Good understanding of creational and structural design patterns in JavaScript.

Nice to have skills:

1. Experience using Git version control software
2. Experience working in an Agile/Scrum development process
3. Create & Own design and development artifacts as per best SDLC practices.
4. Good understanding of Relational database experience and demonstrated abilities in SQL and data modelling is required.
5. Use Adobe Creative Suite programs, e.g., Photoshop, Illustrator to mockup UI elements. 6. Use visual aids such as wireframes, storyboards and UI flow charts, to plan and present user interface designs.

What you will do:

1. Create cross-browser, fully functional web pages using HTML5, CSS3, and JavaScript, while strictly adhering to accessibility and W3C web standards.
2. Collaborate with developers, product managers, designers, web publishers, producers and back-end engineers to support revenue operations and meet project deadlines.
3. Review new code (self and peer) following W3C web standards and strict QA guidelines.
4. Evaluate technical feasibility and offer suggestions & guidance for product development. Build proof-of-concept prototypes for new projects.
5. Create scoping timelines and development project plans for new projects.
6. Participate in interviewing, hiring, on-boarding, and training new employees.
7. Mentor development team members with less experience.
8. Recognize tool/system deficiencies and work with leadership to implement effective solutions.
9. Assist leadership in setting, documenting and communicating technical standards and processes to ensure they are followed.

And along with that, someone who is curious to learn, drives the whole team to perform better and is a cool person to work with. That is when we will make a great team together, right?

Looking forward to speaking with you.

Peacock Engineering Ltd is a Gold-accredited IBM Premier Business Partner which has amassed over 300 person years of experience implementing business critical EAM (Enterprise Asset Management) solutions across a range of industries such as oil & gas, pharmaceuticals, utilities, facilities management, transport, and power generation. 

Peacock Engineering Ltd specialise in providing consultancy services and support for the IBM Maximo EAM software product and maintain a pool of highly experienced and capable consultants fully conversant with IBM Maximo and its functionality, capabilities, and opportunities for customisation to meet business need. 

Peacock Engineering’s Technical Services team is now looking for an experienced UI / Front End Developer who is proficient with React.js (16.8+) to join our international team of developers delivering innovative solutions to our major UK-based customers.

Your primary focus will be working on new user interface components which are modern, secure, performant, and easy to maintain - following well-known React.js workflows and recognised best practices.

You will coordinate with the rest of our multi-disciplined team working together on different layers of the solution architecture.  A commitment to collaborative problem solving, sophisticated design, and delivering a high-quality product is essential.

• Developing new user-facing features for our clients using React.js
• Translating functional requirements (User Stories/Tasks) and wireframes into high quality code with tests
• Working with architects, developers, and QA engineers to ensure that your work is testable, meets industry security standards and is written to deliver good performance/scalability.
• Perform application and solution development to meet project requirements.
• Develop and document detailed technical designs to meet business requirements.
• Manage multiple technical environments and support the development and testing processes.
• Identify areas of customization and optimization and provide solutions that meet the business requirements.

Experience working with the IBM Maximo software product within the following capacities:

• Tech. in Computer Science, Engineering or Business-related field and/or equivalent work experience.
• Thorough understanding of React.js and its core principles
• Minimum five (5) years of work experience in React application development.
• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Demonstrable expertise in software development in an Agile setting
• Ability to deliver well-tested code consistently in an Agile, CI/CD environment
• Experience with JavaScript Testing frameworks and principles (Jest preferable)
• Familiarity with newer specifications of ECMAScript
• Familiarity with RESTful APIs
• Knowledge of modern authentication/authorization mechanisms
• Familiarity with modern build pipelines and tools (Azure DevOps preferable)
• Experience with common front-end development tools such as Babel, Webpack/Parcel, NPM/Yarn, etc.
• Familiarity with Git
• Good time-management skills
• Great interpersonal and communication skills
• Good spoken & written English

• To bring industry knowledge world class capabilities innovation and cutting-edge technology to our clients in the Resources industry to deliver business value.
• To work with leading Resources client’s major customers and suppliers to develop and execute projects and reliability strategies.
• To harness extensive knowledge combined with an integrated suite of methods people and assets to deliver sustainable long-term solution.
• IBM MobileFirst certification
• JAVA/ SQL Skills

• Professional and committed, with a disciplined approach to work.
• Motivated and driven by finding and providing solutions to problems.
• Polite, tactful, helpful, empathic nature, able to deliver to the needs of customers.
• Has respect for others and their views.
• Technology minded and focused, enthusiastic about technologies.
• Analytical, able to raise from the detail and see the bigger picture.
• Dedicated to continually updating and upgrading own knowledge.
• Carries a mind-set of continuous improvement, constantly looking for better and more efficient ways of doing things.
• Values quality at the centre of all things in work.

Due to considerable amounts of virtual working and interaction with colleagues and customers in different physical locations internationally, it is essential that the successful applicant has the drive and ethic to succeed working in small teams physically but in larger efforts virtually.  Self-drive to communicate constantly using web collaboration and video conferencing is essential.

As an employee, you will be encouraged to continually develop your capability & attain certifications to reflect your growth as an individual.

• REQUIREMENTS

  • Write hand-coded HTML5, JS, and CSS(SCSS) that is thoroughly standards-compliant.

  • Solid Javascript experience.
    -WordPress Must needed
    -Experience designing and developing responsive design websites

  • Knowledge of modern authorization mechanisms, such as JSON Web Token

  • You know how to architect all components of a frontend project

  • You have experience reading API documentation and working with different endpoints to compose the desired effect

  • You know how to run projects through solid processes (things like code reviews, reviewing stories, planning)

  • Ability to understand business requirements and translate them into technical requirements

  • Picks up new technologies quickly and efficiently

  • Uses Git effectively

  • Know how to create tests and why it's important

  • Knowledge of OOP and software design principles

  • You know how to optimize frontend load times, debug rendering issues, and overall provide a smooth experience to the user.

  • Knowledge of responsive frontends

  • You don't have to be an expert in backend tech, but you'll need to understand how to integrate with the backend guys.

  • Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform

• WHAT do WE expect?

  • Someone who is comfortable taking on multiple projects at the same time, juggling tasks.

  • Experience of working in and collaborating with teams

  • Should take ownership of tasks.

  • Acumen. You must be able to think and judge multiple solutions for a problem and be able to reason between them.

   

  GOOD TO KNOW

  • Experience in Linux and command-line interface.

  • JS/Webpack/Browserify.