
Job Summary
Wissen Technology is hiring a highly skilled and experienced Lead React.js Developer to join our dynamic team in Pune (Baner). The ideal candidate will have a strong background in front-end development, a passion for building high-performance web applications, and the ability to lead and mentor a team of developers.
Experience:
7+ Years
Location:
Pune (Baner)
Mode of Work:
Hybrid
Key Responsibilities
- Lead the design and development of scalable, high-performance web applications using React.js.
- Collaborate with cross-functional teams including designers, backend developers, and product managers.
- Translate business requirements and UI/UX designs into high-quality code.
- Optimize components for maximum performance across a vast array of web-capable devices and browsers.
- Conduct code reviews and provide mentorship to junior developers.
- Ensure code quality, maintainability, and scalability through best practices.
- Stay up-to-date with the latest trends and technologies in front-end development.
- Participate in sprint planning, estimation, and delivery tracking.
Qualifications and Required Skills
- Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
- 7+ years of experience in front-end development with a strong focus on React.js.
- Proficiency in JavaScript (ES6+), HTML5, CSS3, and modern front-end build pipelines and tools.
- Experience with state management libraries like Redux, Context API, or MobX.
- Strong understanding of RESTful APIs and asynchronous request handling.
- Familiarity with code versioning tools such as Git.
- Experience with testing frameworks like Jest, Enzyme, or React Testing Library.
- Excellent problem-solving skills and attention to detail.
- Strong communication and leadership skills.
Good to Have Skills
- Experience with TypeScript.
- Knowledge of Next.js or other SSR frameworks.
- Familiarity with CI/CD pipelines.
- Exposure to cloud platforms like AWS or Azure.
- Understanding of Agile methodologies.

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
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Total working Experience
3 to 6 years
Job Location
Bangalore
Key accountabilities include:
- Must have 5+ years of experience in
- Secure web application development using Angular 7+
- Integrating the web application with REST APIs
- Strong logical problem-solving skill
- Must have strong knowledge in debugging the Angular application and REST APIs
- Must have strong knowledge in Data structure, Algorithms and Object-Oriented Programming
- Must have worked on IIS webs server and Angular
- Must have knowledge in data encryption and decryption algorithm using certificates & troubleshooting, SHA-256
- Good in web application debugging and troubleshooting.
- Good web application error log analysis
Skills
- Angular version 7+
- TypeScript
- JavaScript
- IIS / Tomcat / NGINX
- Data Structure
As a Frontend Engineer with a focus on Next.js and React, you will play a crucial role in crafting and delivering exceptional user experiences for our users.
Position: Frontend Engineer (Next.js/React)
Location: Hyderabad
Type: Full-time
Job Overview:
We are seeking a skilled Frontend Engineer with a strong foundation in Next.js and React to join our talented development team. The ideal candidate will have a passion for creating visually appealing and highly functional web applications. As a Frontend Engineer, you will collaborate closely with designers and backend developers to bring our products to life while ensuring the best possible performance and user experience.
Responsibilities:
Develop user-facing features and components using Next.js and React
Collaborate with UI/UX designers to translate design mockups into responsive web applications
Optimize applications for maximum speed and scalability
Participate in code reviews, ensuring code quality, performance, and adherence to coding standards
Collaborate with backend engineers to design and integrate RESTful APIs and GraphQL endpoints
Identify and address performance bottlenecks and troubleshoot UI issues
Stay up-to-date with the latest frontend development trends and best practices
Contribute to architectural decisions and technical discussions
Mentor junior developers and provide guidance on best practices and coding techniques
Qualifications:
Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent work experience)
2 to 3 years of professional experience in frontend development
Proficiency in Next.js and React.js is a must
Strong understanding of HTML5, CSS3, and JavaScript (ES6+)
Experience working with RESTful APIs and GraphQL
Familiarity with version control systems such as Git
Solid understanding of responsive and mobile-first design principles
Experience with state management libraries (e.g., Redux, MobX) is a plus
Knowledge of build tools like Webpack and Babel
Excellent problem-solving skills and attention to detail
Strong communication and collaboration skills
Ability to work independently and as part of a team in an agile environment
Portfolio of past projects demonstrating frontend expertise is a plus
Benefits:
Competitive salary and performance-based bonuses
Comprehensive health, dental, and vision insurance
Collaborative and inclusive company culture
Opportunity to work on cutting-edge projects with a talented team
Work Responsibilities
- What You’ll Do:
- Engineers will develop and improve features for products such as WebView pages called from within Mercari’s web version and native app, along with tools used by the Customer Support Team for answering user inquiries and providing transaction support.
- Senior engineers in the Frontend Team are expected to use their technical skills to lead the team and product development, train members through design and code reviews, and make contributions and improvements to the hiring process, including technical tests.
- Development Environment:
- Languages: HTML, CSS, JavaScript, TypeScript, React, Gatsby, Next.js, GraphQL, Apollo Client, Redux, Cypress, Rendertron, Lit, Playwright
- Infrastructures: Google Cloud Platform (Compute Engine, Kubernetes Engine, App Engine)
- Configuration management tool: Terraform
- Other: Circle CI, GitHub, Slack, JIRA, Crowi, Spinnaker, Datadog
Minimum Requirements
- Shared understanding and belief in Mercari Group's mission and values
- At least 3 years of experience in development related to frontend fields such as web browsers, JavaScript, TypeScript, React.js, Next.js, or Redux
- Experience with developing and operating large-scale products
- Ability to design and develop with performance and scalability in mind
- Ability to use HTML and CSS to implement solid user interfaces
- Knowledge of JavaScript and experience developing with UI libraries or frameworks such as React, Vue.js, and Angular
- Able to understand and explain web operation principles and browsers
- Understanding of version management and ability to participate in development via Git
- Effective communication skills, needed for product development with team members and with other teams
Preferred Requirements
- Extensive knowledge of standard web technologies and specialized knowledge in some areas, like TypeScript, React.js, Next.js, Redux
- Understanding of the characteristics of different libraries/frameworks and the ability to introduce them to projects where necessary
- Ability to design architecture based on the characteristics of the app
- Ability to consistently take initiative in implementing improvements to the app
- Project management and/or team leadership
- Cloud development experience (preferably GCP or AWS)
- Experience contributing to an open-source project
- Familiarity with CI systems and the release process
Working Conditions
Employment Status
Full-time
Office
Bangalore
- Hybrid Workstyle
- 2+ years of experience as a react/react-native developer
- Must have skills: ReactJS
- Deep understanding of javascript, typescript and react
- Familiarity with multiple state management techniques
- Knowledgeable about design patterns and their utility in day to day problems
- Worked on and shipped large scale react/react-native applications
- Great product sense; you care about usability and good design
- Strong communication skills
- Bonus if you have worked on Android/iOS apps or nodejs backend.
Roles & Responsibilities
- Work collaboratively with everyone in the team to deliver best in class user experience
- Write well-crafted, well-tested, readable, maintainable code in typescript and react-native
- Implement pixel perfect designs with advanced interactions, which are a joy to use
- Implement unit and UI automation tests
- Own a feature end to end and ensure its usability
- Continuously discover, evaluate and implement new technologies to enhance user experience
- Support other developers on the team with code reviews, design feedback, and other advice and guidance
We are looking to hire a Full-time, Remote (India) Frontend engineer to help create a SAAS product from the ground up in a niche industry.
This will be the v2.0 of an existing legacy platform with paying customers. This position is within the first few hires in the founding team of the revamped company.
We are on a mission to build a truly world-class product and deliver at high speeds with high quality.
Read on and apply for the job if you are a doer, likes no BS, think you're competent enough to get things done, want some quiet time every day, want to make a difference, values work-life balance, and enjoy life outside work.
Experience - At least 5 years building scalable SAAS applications in the cloud. It would be great to showcase anything progressive. Education from premier institutions, git contributions, tech blogs, volunteering, pet projects, etc.
Responsibilities -
- Architect, write, deploy and own the (SAAS) product from a technical frontend standpoint working closely with backend engineers and designers
- Create and deliver the product end-to-end all the way to the user
- Write highly performant code and continuously measure performance and make the application better based on benchmarks
- Debug production issues and keep the application quality high always
- Assist with hiring more people when the team grows
- Pick up any appropriate work as in any early-stage company
General Skills Needed -
- Create state-of-the-art user experiences including complex dashboards, pdf reports, complex graphs delivering the end-to-end implementation all the way to the user
- Should be able to build and deploy multi-tenant SAAS applications end to end
- Need to have a technology-agnostic mindset. Should be able to easily pick up any new technology based on the use case
- Should be an expert software craftsman/craftswoman. Must own the code and be proud of what you build
- Write well thought out, well-tested code with extensive unit tests and integration tests so that the addition of future features is easy.
- Must know cloud deployment concepts and be comfortable working on CI/CD pipelines, cost-effective cloud deployment strategies. AWS experience highly preferred
- Must be able to design and architect simple, market-tested yet highly scalable solutions
- Must be able to quickly iterate and produce working software at a high speed. Must not be shy to scrap and rebuild when there is a need
- Must be appreciative of documentation and write well-documented code and technical documentation alongside
Technical Skills Needed -
- Expert level knowledge in JavaScript, HTML, CSS, and modern web development standards and frameworks (React preferred/Angular/Vue/etc)
- Expert level knowledge in the appropriate frameworks
- React (preferred), Angular, Vue, or other modern frontend frameworks
- Integrating with Rest APIs
- PostgreSQL, MySQL, any NoSQL or other database technology
- Expertise in data presentation and reporting - creating beautiful reports and graphs in the UI based on the data collected by the backend
- Must have a great level understanding of various frameworks on authentication and authorization, billing and metrics
- Must have some knowledge in creating cost-efficient and scalable cloud deployments (AWS preferred) and be ready to learn
- Expert level knowledge in industry-standard design patterns and tools

Job Description
Expert JavaScript developer with exposure working in building products from scratch
Hands on experience working on TypeScript, ES5, ES6, HTML 5, CSS 3, JQuery and writing cross- browser compatible code
Proficient in implementing front-end of applications using Angular (JS and above) and / or ReactJS
Good knowledge of MVC, OOPS concepts, Web Development Concepts
Work experience in Node.JS will be major plus
Experience with the hybrid mobile app framework such as PhoneGap, Ionic, React Native would be an added plus
Experience with RESTful services
Experience in JavaScript build tools such as web-pack /gulp
Familiar with testing frameworks (such as Jasmine) and Test runner framework (such as Karma)
Thorough understanding of the responsibilities of the platform, database, API, caching layer,proxies, and other web services used in the system
Critical thinker and problem-solving skills
Team player
Good time-management skills
Great interpersonal and communication skills
Responsibilty
Your specific duties in this role will include:
Responsible for the front end/UI development for of the web-based and mobile-based application
Responsible for communicating with clients
Responsible for communicating with Designing Team and Team Manager
Responsible for Requirement Analysis
Responsible for mentoring junior front-end developers
- Substantial experience in building large complex and performant web applications using HTML5, CSS3, Typescript and Javascript across multiple browsers (Especially IE11).
- Experience in frameworks such as React (Redux, Redux Thunk or Saga, React Router, React Hooks) , Node JS and good understanding of the basics of these frameworks and their life cycles.(MUST HAVE)
- Experience in frameworks like Bootstrap and CSS pre-processors like SASS and LESS is desirable.
- Deeper understanding of network layer, HTTP, HTTPS, cookies, local storage.
- Knowledge to handle real-time async data would be a plus.
- Good knowledge on build tools like Webpack and Gulp
- Good knowledge on testing tools like Jest, Cypress, Jasmine, Karma, etc
- Experience in Git source control
- Deeper understanding of Chrome Dev Tools.
- Deeper knowledge of UI optimizations and performance.
- Excellent communication skills, good visual design sense, in-depth experience in developing web-based applications.
- Experience leading multi engineer projects and mentoring junior engineers.
- Command an impressive portfolio of the latest UI technologies is a plus
1. Developing new user-facing features using React.js
2. Architect efficient and reusable front-end systems that drive complex web applications
3. Translating designs and wireframes into high-quality code
4. Optimizing components for maximum performance across a vast array of web-capable
devices and browser
5. Mentor junior members through training and individual support
6. Proactively learn and accordingly apply new technologies, best design practices, and
usability patterns
7. Optimize application for maximum speed and scalability - (Speed matters)
Skills And Qualifications:
1. Strong proficiency in JavaScript and Typescript, including DOM manipulation and the
JavaScript object model
2. Thorough understanding of React.js and its core principles including server-side rendering
3. Understanding of React.js life cycles and hooks in details
4. Understanding of webpack and webpack configuration including server-side rendering
5. Familiarity with newer specifications of EcmaScript
6. Experience with data structure libraries (e.g., Immutable.js)
7. Knowledge of modern authorization mechanisms, such as JSON Web Token
8. Familiarity with modern front-end build pipelines and tools
9. Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
10. Ability to understand business requirements and translate them into technical requirements
11. A knack for benchmarking and optimization
12. Proficient understanding of code versioning tools, such as Git
13. Min 4 years of experience in ReactJs and NodeJS
14. Knowledge of React Native is a plus
15. Experience in e-commerce React.js front end is a big plus
SKILLS WE ARE LOOKING FOR
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.
THE PERSON WE ARE LOOKING FOR
4+ years Experience with React Native
BS degree or higher in Computer Science or Engineering
Firm grasp of the JavaScript (and TypeScript or ClojureScript) language and its nuances, including ES6+ syntax
Knowledge of functional 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 Mocha








