React Technical Lead at Wissen Technology · Bengaluru (Bangalore) · 12 - 20 years · ₹30L - ₹50L / yr · Profitable · Posted 15 Jul 2025

· 12+ years of professional experience in front-end development.
· 7+ years of hands-on experience with React.js and its ecosystem (Redux, Context API, Hooks, etc.)
· Strong understanding of JavaScript (ES6+), HTML5, and CSS3.
· Experience with RESTful APIs, GraphQL, and WebSocket integration.
· Proficiency in modern build tools (Webpack, Vite, Babel, etc.).
· Expertise in state management libraries (Redux, MobX) and React Query.
· Solid understanding of UI/UX principles and responsive design.
· Experience with testing frameworks (Jest, React Testing Library, Cypress, etc.).
· Familiarity with modern CI/CD pipelines and version control tools (Git).

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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Basic Qualifications
• BA/BS Degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience.
• 3–5 years of professional software engineering experience with a strong focus on frontend / UI development.
• Strong proficiency in React and TypeScript.
• Solid understanding of HTML5, CSS3, and modern JavaScript (ES6+).
• Experience integrating frontend applications with GraphQL APIs.
• Familiarity with microservices architectures and frontend–backend integration patterns.
• Experience with Git and collaborative development workflows.
• Hands-on experience using AI-assisted development tools in day-to-day engineering work.
Preferred Qualifications
• Experience working with or alongside NestJS-based microservices.
• Familiarity with GraphQL client libraries such as Apollo Client.
• Experience with frontend testing tools including Jest, React Testing Library, Cypress, or Playwright.
• Exposure to frontend performance optimization techniques (lazy loading, code splitting, memoization).
• Familiarity with design systems, accessibility tooling, and component-driven development.
• Exposure to LLM APIs, agent frameworks, or AI-enabled frontend automation.
Suggested Skills
• React / TypeScript
• GraphQL (Apollo Client)
• UI Architecture & Design Systems
• Frontend Testing (Jest, RTL, MSW)
• Build & Tooling (Webpack, ESLint, Prettier)
• CI/CD for Frontend
• AI-assisted Software Development & Automation
Additional Information
• AI-assisted development is a core expectation for this role.
• The team builds modern UI systems backed by GraphQL, NestJS microservices, and intelligent automation.
• This role offers opportunities to deepen frontend expertise while influencing how AI improves
Role
We are looking for a React Developer to join our awesome team and deliver a streamlined user experience. We want a team member who strives to develop a first-class codebase using React best practices. As a React Developer, you will implement a complete user interface in the form of a mobile/desktop web app & handle its integration with the back-end.
Responsibilities
- Develop user interfaces for modern rich internet applications with the latest Front End Technologies
- Perform product analysis and development tasks of increasingly complex nature which may require extensive research and analysis.
- Writing tested and documented JavaScript, HTML and CSS
- Make design and technical decisions for React projects
- Develop application code and unit tests in the React.
- Ensuring high performance
Qualifications
- BSc/BE/BTech in Computer Science, Engineering or a related field
- 1+ years Experience with React. Good to have working knowledge of React Native, Angular, VueJS
- Strong expertise with HTML, CSS, and writing cross-browser compatible code.
- Good understanding of AJAX and JavaScript DOM manipulation Techniques
- Experience with RESTful services
- Experience in JavaScript build tools like grunt or gulp
- Hands on and implements complex React modules
- Able to implement automated testing platforms and unit tests
- Understanding of fundamental design principles behind a scalable application
- Proficient understanding of code versioning tools (Git)
- Critical thinker and problem-solving skills
- Team player
- Good time-management skills
- Great interpersonal and communication skills
Why LiftOff?
We at LiftOff specialize in product creation, for our main forte lies in helping Entrepreneurs realize their dream. We have helped businesses and entrepreneurs launch more than 70 plus products.
Many on the team are serial entrepreneurs and have had a history of successful exits.
- 5+ years of experience, working on frontend technologies
- Individual contributor - responsible for the design, coding, and unit testing
- Should have good working experience in React and React Native
- Should have a good understanding of state management in frontend/UI applications
- Proficiency in Javascript / ECMAScript 6+
- Creating custom, general-use modules, and components that extend the elements and modules of React
- Good knowledge of data structures, problem-solving / algorithms
- Knowledge of creating custom / reusable components
- Should know OOP Concepts
We are a group of passionate people driven by a set of core values. We strive to make every process transparent and have flexible work timings along with great startup culture and vibe. There are no job designations because its a flat hierarchy.
Srijan Technologies is a 18-year-old technology services firm.
For a large part of its life, Srijan has specialised in building content management systems with expertise in PHP-based open-source CMS, specifically Drupal. In recent years Srijan has diversified into
- Data Engineering using NodeJS and Python,
- Data Science -- Analytics and Machine Learning and
- API Management using APIGEE.
Srijan is approx 400 people strong (including some Senior Consultants) Srijans development offices in India are located in New Delhi, Gurugram, Goa, Bangalore and Mumbai, Delhi, Gurgaon and Goa are the largest offices. In addition, a few developers & delivery leads are located in several countries globally -- USA (New York, Charlotte), Singapore, Philippines (Manila), Australia (Sydney, Brisbane, Melbourne), Germany (Berlin), Japan (Tokyo). In each of these countries, Srijan has a functional legal subsidiary.
Srijan works largely with enterprises or mid-large sized global firms and focuses on recurring business from these accounts, thereby bringing much-needed predictability of revenue for high-growth companies. It works with several top brands at the moment.
The firm is beginning to invest in startups and in joint research projects with top institutes. For instance, it recently partnered with IIT-Delhi to invest in an 18-month project for building a solution for Honey traceability using Blockchain.
The leadership team at Srijan has set itself an audacious goal of reaching $25 million in revenue (while maintaining healthy EBIDTA margins) in FY 2020 -- doubling our revenues. This requires significant technology and delivery leadership bandwidth to be created in the firm to ensure our high-quality standards are not compromised.
Each year Srijan donates 7% of its profits to Srijan Foundation Trust a registered non-profit which runs several projects including non-formal schools (directly or via partner organizations) and Indic civilizational projects such as #SrijanTalks.
Please visit company website for more information http://www.srijan.net/">www.srijan.net
Experience
We are looking for a highly skilled React Native Developer to collaborate with a team of developers to develop and maintain a Frontend Mobile application that will be launched on multiple platforms such as Hybrid Applications. You will be responsible for building native applications with a focus on front-end development. The ideal candidate is an advanced React Native Developer who can build dynamic, high performing, and responsive UI for our web applications.
Responsibilities
- Collaborate with a team of developers and designers to create a web application run on multiple
- Create reusable, effective, and scalable JavaScript code.
- Design the data and presentation layer of the web application’s front-end.
- Use additional JavaScript libraries such as Redux to manage the web application’s state, derive computed data from the state of the system, and make asynchronous API
- Translate the client’s technical requirements into
- Test and update web application so that it can be used on all web
Skills and Qualification
- English language
- 3+ years of professional experience in Native
- Highly proficient in rendering components with Native
- Highly proficient in JavaScript, modern JavaScript,
- Highly proficient in one or more libraries (e.g. Redux, React Router, etc) for state managing and routing in addition to React.
- Proficient in using Git as a control
- Knowledge of
- Involved in testing of
- Hands-on design and coding are mandatory.
- Design and develop new features and functionality for a consumer e-commerce product with rich UI content.
- 5+ years of experience in building single-page applications using modern JS frameworks.
- Expertise in React JS, ES6, HTML5, SCSS, and related technologies.
- Experience building front-end for products from scratch.
- Experience in building REST API, preferably using .Net Web API.
- Should have good experience with application design, implementation, maintenance, diagnosing/correcting issues, and maintaining compliance with industry security standards under minimal direction.
- Research and evaluate new software, frameworks, and techniques to provide recommendations to the division.
- Implement defect free quality code by writing appropriate unit-tests and regression tests.
- Should possess excellent Interpersonal and communication skills.
- Bachelor's degree in Computer Science or a technical field.
Bachelor’s degree in Computer Science, Information Technology, or a similar field.
Previous 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, Webpack, 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.
Senior Front End Engineer (React.js & React Native - Mobile Experience)
Job description
Fulfil’s software engineers develop the next-generation technologies that change how millions of customer orders are fulfilled by merchants. Our products need to handle information at a massive scale. We're looking for engineers who bring fresh ideas from all areas into our technology.
As a Front End software engineer, you will work on the ReactJS & React Native (Mobile Experience) powered user interface used by Fulfil merchants to manage their back-office operations. This is mission critical software and your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux) & React Native (Mobile Experience). You will ensure that these components and the overall application are robust and easy to maintain. In this role, you will be collaborating closely with the rest of the team working on different layers of infrastructure in an international environment. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality are important.
What You’ll Do:
- Collaborate with a small yet extraordinarily talented team of engineers to implement front-end technologies
- Develop new user-facing features using React.js & React Native (Mobile Experience)
- Work closely with the Design and Product teams to translate complex technical workflows into delightful user experiences
- Define how Fulfil builds user interfaces and ensure that we’re utilizing and keeping up with modern web standards
- Continually test, measure, and iterate on the results of your work in the spirit of continuous improvement
- Write clean, reusable, and well-tested front-end code
- Help to bridge the responsibilities of the Product and Engineering teams, spending time with both on the way to launching new products
- Architect efficient and reusable front-end abstractions and systems that drive complex web applications
- Build and contribute to open source projects
- Build reusable components and front-end libraries for future use
- Optimize components for maximum performance across a vast array of web-capable devices and browsers
Requirements
We’re Looking for Someone With:
- 5+ years of experience as an engineer
- Experience in building large-scale web applications in a fast-moving team environment
- A strong understanding of UX and UI design standards
- The perfectionist’s touch on a pragmatist’s deadline: you strive for pixel-perfection and intuitive functionality
- Strong proficiency in JavaScript (2-4 Years of experience), including DOM manipulation and the JavaScript object model
- Thorough understanding of React.js & React Native (Mobile Experience) and its core principles, with experience in popular React.js workflows (such as Flux or Redux)
- Experience with common front-end development tools such as Babel, Webpack, NPM, etc
- The ability to bring any design to life with HTML and CSS, with cross browser compatibility and accessibility
- Smarts, humility, communication skills, and equal willingness to teach and learn
- Familiarity with RESTful and GraphQL APIs
- Knowledge of modern authorization mechanisms, such as JSON Web Token
- Experience in developing large client side JavaScript applications
- Familiarity with code versioning tools like GIT
- Experience with Javascript testing tools and test automation
Nice to Haves:
- Prior experience at a growth stage Internet/Software company
- Demonstrated work beyond the front-end, experienced in integrating with a wide array of back-end technologies and services (e.g. experience with Python, AngularJS)
- Experience developing large client-side applications and optimizing them for performance
- You can straddle client and server development, creating APIs that drive web apps
- You understand the intricacies of timezones
- Web optimization, performance tools, and load testing
- You maintain or contribute to an open-source project
Responsibilities:
- 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
- Collaborate with other team members
You’ll be a good fit if you:
- Have 1+ years of experience developing user facing features
- Have a deep understanding of basic UI/UX/design principles
- Are self-motivated and can solve problems independently
- Experience leveraging web technologies like HTML, CSS, and Javascript(ES6)
- Experience using the latest CSS layout methods such as Flexbox and Grid
- Experience with CSS preprocessors like Sass or LESS
- Knowledge and hands-on experience with Node.js ecosystem and leveraging Javascript libraries / frameworks such as React, Angular or Vue
- Experience with testing frameworks (Jest) and writing unit tests
- Competency in building responsive layouts
- Practical knowledge of performance optimization techniques
- Collaboration in a GitHub repository with many contributors and comfortable with workflows like code reviews, forking, pull requests, etc.










