
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

About Wissen Technology
About
The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015. Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains.
With offices in US, India, UK, Australia, Mexico, and Canada, we offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
Connect with the team
Similar jobs
- Proficiency in Angular (v8+) and TypeScript.
- Strong knowledge of HTML5, CSS3, and JavaScript/ES6+.
- Hands-on experience with RxJS for reactive programming.
- Experience with state management libraries like NgRx or similar.
- Familiarity with RESTful APIs and JSON data structures.
- Understanding of authentication and authorization mechanisms (OAuth, JWT).
- Experience with Angular CLI for project setup and management.
- Proficiency in browser developer tools for debugging.
- Strong experience with Jasmine, Karma, or other testing frameworks.
- Familiarity with build tools like Webpack or Vite.
Job Description:
Front end developers are required to work in teams alongside back end developers, graphic designers, and user experience designers to ensure all elements of web creation are consistent.
Responsibilities:
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Experience in developing apps using Reactjs with Redux, React hooks, react-router with Javascript ES6
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Developing new user-facing features using React.js
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Integrate APIs with frontend components using React.js
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Ensuring user experience determines design choices.
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Developing features to enhance the user experience.
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Striking a balance between functional and aesthetic design.
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Ensuring web design is optimized for smartphones.
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Building reusable code for future use.
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Optimizing web pages for maximum speed and scalability.
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Utilizing a variety of markup languages to write web pages.
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Maintaining brand consistency throughout the design.
Front End Developer Requirements:
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Degree in computer science or related field.
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Understanding of key design principles.
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Proficiency in React.js,HTML, CSS, JavaScript, and jQuery.
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Understanding of server-side CSS.
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Experience with graphic design applications such as Adobe Illustrator.
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Experience with responsive and adaptive design.
About CercleX:-
CercleX is a digital technology platform which is a leading https://cerclex.com/blog/waste-management-in-india/">waste management company in India with an extended outlook of circularity through its various ventures into the field of sustainability.
We have received FICCI Impactful Cleantech Startup Award, MeitY Emerging Startup Award, TVS Capital Budding Nxt Gen Entrepreneur Award, and many more for our digital solutions enabling transactions between waste generators, and aggregators, processors, and bringing in complete transparency, traceability to the waste ecosystem.
https://play.google.com/store/apps/details?id=com.scrapmarketCCX">Cercle X ScrapMarket is an app that helps you buy and sell scrap by connecting 100% verified buyers and sellers of scrap across India. CercleX helps brands to accomplish their sustainability targets with https://cerclex.com/extended-producer-responsibility/">Extended Producer responsibility and research solid waste managemet on the environment to ensure the environment is eco-free.
- Design and implementation of the frontend applications and Mobile apps
- “Pixel-perfect” implementation of our approved user interface
- Ability to understand business requirements and translate them into technical requirements
- Break features into simpler granular tasks, estimate effort required, and identify dependencies
- Work with Analyst and back end developers to deliver a seamless user experience
- Write clean, efficient, maintainable code with good test coverage
- Build reusable code and libraries for future use and optimize the application for maximum speed and scalability
- Test and Debug as required
Expected Qualifications and Key Skills
- BSc or B.E in Computer Science / Engineering from a tier-1 college in India or abroad
- Proficiency in JavaScript, including DOM manipulation and the JavaScript object model
- Strong understanding of UI/UX, responsive design, cross-browser compatibility, AJAX, and general web standards
- 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/TypeScript
- 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.
- Proficiency with Git / Version control
i2e1 – Company Brief
i2e1 is one of the fastest growing technology start-ups in the country, founded by IIT and IIM graduates and incubated at IIT Delhi. We at i2e1 have created a platform which provides internet access to over 1.5 Million instances every month and enables offline retailers to get real time insights into their customers, locations, vicinity and industry.
What makes i2e1 a great fit for you?
At i2e1, you will be part of a fast growing team that is working towards impacting 500 million lives by 2022. If you like solving real life challenges and working with a high performance team, i2e1 is the perfect place for you to build your career.
What is Technology at i2e1?
Technology plays a central role at i2e1 and delivering the best experience to users is our guiding principle. As a part of Tech team, you will get a chance to work on multiple consumer centric products like WIOM and i2e1 WiFi solutions. A typical day in tech's life at i2e1 includes- participating in daily scrums, understanding the core business challenge, leveraging tech tools to solve the problem, meeting and discussing solutions with stakeholders and working with multiple teams like Product, Design, Analytics and Marketing team to deliver outstanding experience to our users.
As a team, we collaborate on problem solving and co-create solutions together, working very closely with Product Managers, Developers and other business stakeholders. This is a unique opportunity for a passionate individual to solve real life problems through tech and build outstanding digital experiences.
If you are interested in working on challenging problems in a young high growth startup, i2e1 is the place for you.
More Details about the position:
1. Team – Technology Team
- Position – Front-end Developer
- Location – Saket, Delhi
- Roles & Responsibilities
- Plan, review, analyze, design, code and implement simple to more complex internet and e-commerce applications using frontend development tools (HTML5, JavaScript, Angular 6, CSS etc.) for both traditional browsers and mobile devices.
- Ensure software meets all requirements of quality, security, modifiable, extensibility etc.
- Set up and maintain data structures and database environment.
- Ability to support and maintain existing systems that use a variety of Angular and .NET technologies.
- Provide technical expertise to resolve service impacting incidents and problems
- Collaborate with developers, designers, business team and tailor web solutions to their needs and requirements
- Qualification
- a)Bachelors/Master Degree in Computer Science or equivalent.
- b)3-5 years of experience in front-end languages at a scaled B2C company.
- c)Solid understanding of Web Development Process, A to Z.
- d)Strong knowledge of Angular, HTML5, JavaScript, Rest Apis.
- e)Solid understanding of relational databases and SQL for implementing database driven, web-based applications
- f)Flexibility, good time management skills, basic project management skills
* Research, guide, and execute frontend architecture changes
* Ensuring high performance of web app
* Writing tested, idiomatic, and documented JavaScript, HTML and CSS
* Cooperating with the back-end developer in the process of building the RESTful API
Skills and Qualifications:
* Proficiency with reactive Programming in JavaScript
* Deep knowledge of Angular2.0+/React practices and commonly used modules based on extensive work experience
* Creating self-contained, reusable, and testable modules and components
* Ensuring a clear dependency chain, in regard to the app logic as well as the file system
* Extensive knowledge of HTML & CSS
* Validating user actions on the client side and providing responsive feedback
* Writing non-blocking code, and resorting to advanced techniques such as multi-threading, when needed
* Creating custom, general use modules and components which extend the elements and modules of core Angular2.0+/React
* Experience with all levels of operation available to the front-end
- 4-10 years experience
- Strong React, TypeScript, JavaScript
- Experience with NextJS and Material UI
- Experience with popular React.js workflows (such as Flux or Redux)
- Demonstrated mastery of HTML, CSS & JavaScript (ES6+)
- Good understanding of HTML, CSS, Javascript, jQuery, Bootstrap3/4, JSON & AJAX.
- Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
- Experience in Graph implementation
- Thorough understanding of React.js and its core principles; Familiarity with RESTful APIs.
- Knowledge of modern authorization mechanisms, such as JSON Web Token
- Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
- Experience in Blob data implementation with Javascript
- Familiarity with RESTful APIs
- A knack for benchmarking and optimization
- Familiarity with code versioning tools









