Frontend Developer

**Subject:** Exciting Opportunity – Web Developer | Mumbai | WordPress | AI Coding Tools

Dear Candidate,

I hope you're doing well!

We are hiring a **Web Developer** for **Coalesce Eventz India Pvt. Ltd.** If you have experience in **WordPress development, HTML, CSS, JavaScript**, and enjoy building websites, web applications, and dashboards, this could be an excellent opportunity for you.

**Position:** Web Developer

**Location:** Goregaon East, Mumbai (Work from Office)

**Experience:** 3–5 Years

### Key Responsibilities:

* Develop, customize, and maintain WordPress websites, web portals, and web applications

* Build interactive dashboards and internal business tools

* Write clean, responsive HTML, CSS, and JavaScript

* Integrate APIs, forms, payment gateways, and third-party applications

* Optimize websites for speed, performance, and SEO

* Troubleshoot, maintain, and enhance existing websites and applications

* Use AI-assisted development tools such as **OpenAI Codex, Cursor, Claude Code, and GitHub Copilot** to accelerate development

### Required Skills:

* 3–5 years of hands-on web development experience

* Strong expertise in **WordPress, HTML, CSS, JavaScript**

* Experience building web portals, dashboards, or web applications

* Practical experience with AI coding tools (Codex, Cursor, Claude Code, Copilot, or similar)

* Knowledge of Git, responsive design, hosting, and deployment

### Preferred Skills:

* PHP (WordPress)

* React.js or Vue.js

* WooCommerce

* API & Database Integration

* Figma

* Google Analytics (GA4) & Google Tag Manager

If this opportunity matches your experience and interests, please share your updated resume along with the following details:

* Current CTC:

* Expected CTC:

* Notice Period:

* Current Location:

* Total Experience:

* Experience in WordPress:

* Experience in HTML/CSS/JavaScript:

* Experience with AI Coding Tools (Codex/Cursor/Claude/Copilot):

* Experience with React/Vue/PHP (if any):

* Portfolio/GitHub/Live Project Links:

* Reason for Job Change:

Meet with stakeholders, customers, and project teams to collect requirements, scope projects, and contribute to creative 

and technical concepts 

∙Implement modifications to existing campaigns to accommodate changes in user requirements 

∙Employ best practices in developing, conducting, and interpreting A/B tests and personalization campaigns focused on user 

experience and effectiveness against project goals 

∙Identify areas for improvements and assist in managing projects to implement enhancements to completion  

∙Maintain campaign code in GitHub following established organization standards and development guidelines 

∙Ensure team process to enter and track implementation information including work items, tasks and issue management 

using JIRA 

Tools: 

∙Must have 5+ years minimum experience in building and maintaining web applications. 

∙Must have experience in web technologies HTML5, CSS3, JSON, JavaScript, Web services (SOAP/REST). 

∙Must have Experience in CSS and JavaScript frameworks like Bootstrap, jQuery etc. 

∙Experience with SASS/LESS frameworks. 

∙Experience with source control systems like TFS, GIT etc. 

∙Experience with JavaScript application frameworks such as Angular, React or Vue.js is a plus. 

∙Knowledge of scripting languages and object-oriented concepts. 

∙Experience with Agile / Scrum software development practices. 

∙Excellent troubleshooting and communication skills. 

∙Experience in any content management systems (CMS) preferred but not required. 

∙Ability to work independently and as part of a team. 

∙A/B Testing or Personalization experience is preferred but not required. 

∙Bachelor's degree in computer science, engineering or a related discipline with an information technology focus or 

equivalent experience

Responsibilities:

• Collaborate with cross-functional teams to define, design, and ship new features.
• Develop and maintain web applications using Angular
• Design, build, and maintain efficient, reusable, and reliable code.
• Ensure the best possible performance, quality, and responsiveness of the application.
• Identify and correct bottlenecks and fix bugs.
• Work with external data sources and APIs.
• Unit-test code for robustness, including edge cases, usability, and general reliability.
• Collaborate with other developers and stakeholders to ensure successful project completion.

Requirements:

• Bachelor's degree in Computer Science, Software Engineering, or related field.
• 2+ years of experience in web application development using Angular.
• Strong knowledge of Angular 2+ and TypeScript.
• Experience with Angular Material and Bootstrap.
• Knowledge of relational database design and development using SQL Server.
• Familiarity with agile development methodologies.
• Strong analytical and problem-solving skills.
• Excellent written and verbal communication skills.
• Ability to work independently and as part of a team.

Preferred Qualifications:

• Experience with Entity Framework Core.
• Experience with Azure Cloud Services.
• Familiarity with unit testing frameworks such as NUnit and xUnit.
• Experience with source control management tools such as Git.
• Knowledge of CI/CD pipelines using Azure DevOps or similar tools.

Responsibilities

• Translate functional requirements into technical design
• Interact with clients and internal stakeholders to understand the visulaisation and platform requirements in detail 
• Design, Develop and Deliver reusable components and front-end libraries
• Translate designs and wireframes into high quality code 
• Optimise components for maximum performance across a vast array of web-capable devices and browsers
• Work closely with QA team and ensure the application is bug-free

Candidate Requirements

• Strong knowledge for charts
• 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 (such as Flux or 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
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimisation
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial)
• Good understanding of asynchronous request handling, partial page updates, and AJAX4Familiarity with browser testing and debugging

• Develop new user -facing features
• Build reusable code and libraries for future use
• Ensure the technical feasibility of UI/UX designs
• Optimize application for maximum speed and scalability
• Assure that all user input is validated before submitting to back-end
• Meeting with the development team to discuss user interface ideas and applications.
• Reviewing application requirements and interface designs.
• Identifying web-based user interactions.
• Developing and implementing highly responsive user interface components using react concepts.
• Writing application interface codes using JavaScript following react.js workflows.
• Troubleshooting interface software and debugging application codes.
• Developing and implementing front-end architecture to support user interface concepts.
• Monitoring and improving front-end performance.
• Documenting application changes and developing updates.

• Bachelor’s degree in computer science, information technology, or a similar field.
• Minimum 2 years experience working as a react.js developer.
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• Knowledge of REACT tools including React.js, Web pack, Enzyme, Redux, and Flux.
• Experience with user interface design.
• Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software.
• Excellent troubleshooting skills.
• Good project management skills.
  
  About Haber
  At HABER, we are solving the challenges of tomorrow, today. We are bringing together the best minds in process, engineering, computing and chemistry to develop solutions to address some of the world’s toughest challenges – water and energy scarcity and sustainability. Over the past few years there has been an explosion in unstructured data across industry driven by affordable sensing technologies and adoption of analytical instrumentation. This sudden increase in data has resulted in industries spending significant amounts of time collecting, organizing and analysing content and very little time driving value with the data. HABER is focused on reversing this trend by helping our customers spend less time collecting and analysing data and more time using HABER’s platform to drive efficiency, identify issues before they happen and uncover hidden potential. Follow us on Twitter @haber_tech or LinkedIn at linkedin.com/company/haber-technologies or visit us at haberwater.com/careers
  
   

• Build pixel-perfect, buttery smooth UIs across both mobile platforms.
• Leverage native APIs for deep integrations with both platforms.
• Diagnose and fix bugs and performance bottlenecks for performance that feels native.
• Reach out to the open source community to encourage and help implement mission-critical software fixes—React Native moves fast and often breaks things.
• Maintain code and write automated tests to ensure the product is of the highest quality.
• Transition existing React web apps to React Native.

• Firm grasp of the JavaScript language and its nuances, including ES6+ syntax.
• Knowledge of functional or object-oriented programming
• Ability to write well-documented, clean Javascript code
• Rock solid at working with third-party dependencies and debugging dependency conflicts
• Familiarity with native build tools, like XCode, Gradle, Android Studio.
• Understanding of REST APIs, the document request model, and offline storage
• Experience with automated testing suites, like (Jest or Mocha)

Must Have: 

• Must have Javascript and React.js 

Responsibilities: 

• Use markup languages like HTML to create user-friendly web pages 

• Maintain and improve website 
• Optimize applications for maximum speed 
• Design mobile-based features 
• Collaborate with back-end developers and web designers to improve the usability 
• Get feedback from, and build solutions for, users and customers   

• Write functional requirement documents and guides 
• Create quality mockups and prototypes 
• Help back-end developers with coding and troubleshooting. 
• Ensure high-quality graphic standards and brand consistency 

Skills looking for: 

• Understanding of key design principles. 
• Proficiency in HTML, CSS, JavaScript, and React.js. 
• Should be good at CSS and sound knowledge about Tailwind and Material UI. 

• Understanding of server-side CSS. 
• Understanding of SEO principles. 
• Good problem-solving skills. 
• Excellent verbal communication skills. 
• Good interpersonal skills. 

Good to Have: 

• Experience in Next.js and AngularJS is highly preferred 

Opportunity in the Role: 

• Experienced founding team. 

• Right to win - The founding team knows the business & its secrets inside out. We are starting with a significant head start and a precise plan of action. 
• Barriers to entry - This is a specialized play with natural barriers to entry, allowing for significant value creation for all equity holders. 
• Backed by marquee global investors. 
• Exposure to all aspects of company building - exposure to investors, fund-raising, decision making, building the team & culture. 
• All of the above perks of joining a high potential company very early, along with a competitive market salary. 

What you will do:

• Build cross-browser compatible front-end applications using ReactJS, JavaScript, HTML and CSS.
• Develop fast and highly scalable and responsive applications.
• Work closely with cross-functional teams of product manager, backend developers, and UI/UX designers.
• Partner with product teams to ensure user interactions & features are well-designed and implemented.
• Manage individual project priorities, deadlines and deliverables.

Skills And Qualifications:

• 4+ years of work experience in frontend web development.
• Strong understanding of Core Javascript, ReactJS, React Native (desired), semantic HTML5 CSS, Flexbox and responsive development.
• Thorough understanding of Javascript design patterns
• Proficient understanding of web markup, including HTML5 CSS3
• Understanding of server-side CSS pre-processing platforms, such as LESS and SASS
• Proficient understanding of advanced JavaScript libraries and frameworks, such as ReactJS, AngularJS
• Good understanding of asynchronous request handling, partial page updates, and AJAX
• Preferably from a SaaS and web applications platforms background, and/or B2B applications.
• Proficient understanding of cross-browser compatibility issues and ways to work around them
• Proficient understanding of code versioning tools, such as Git
• Experience in building APIs / application backends using Node.js (good to have)

Understanding of UI / UX best practices and ability to collaborate with the Design team to implement functional and intuitive user experiences

• Develop new product features and new applications within an Agile
• Build reusable code and libraries for future
• Write well-designed, testable, efficient code using the latest development best
• Collaborate with designers to implement and improve design
• Optimize applications for maximum speed and
• Stay up-to-date on emerging
• Contribute to the continuous improvement of the development

• Passion to build world class UI design
• 5+ years of experience developing web applications with modern JavaScript programming frameworks, tooling and libraries (such as Backbone, Angular, React, Vue.js, Ember) and CSS pre-processing frameworks (such as Sass or Less)
• Minimum one-year experience in developing js applications in team environment.
• Experience with state management frameworks like Redux
• Experience writing unit tests
• Familiarity with common front-end development tools such as Babel, Webpack, gulp, npm- scripts
• Any experience building, launching or supporting a SaaS product