
· 7+ years of professional experience in front-end development.
· 5+ 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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Responsibilities
- Work in a fun and fast-paced environment.
- Participate in requirements gathering, design, development, QA, support.
- Communicate with different stakeholders such as QA, Project Managers and Product Owners
- Discover, evaluate, and implement new technologies to maximize development efficiency.
- Groom, mentor and upskill team members with modern technologies and development practices
Key Competencies:
- 5-8 Years of relevant experience in front-end development.
- At least 5-4 years of working experience with the React ecosystem.
- In-depth knowledge of TypeScript, CSS, and HTML.
- Strong proficiency in Vanilla JavaScript, DOM, Browser API’s and ES6 Features.
- Strong Knowledge of State Management with React and relevant workflows.
- Good Understanding of Modern frontend workflows with NPM, Webpack, Babel etc.
- Knowledge of modern programming paradigms like functional and reactive programming.
- Knowledge of testing frameworks including Chai, Mocha and Sinon or equivalent.
- Experience with using browser-based dev tools for trouble shooting and enhancing the performance.
Good to have skills:
- Knowledge of cloud-based services like AWS and GCP.
- Working knowledge of Video streaming and playback
- Knowledge of modern programming paradigms like functional and reactive programming.
As a Senior Software Development Engineer, you will drive the responsibility of developing features for our existing products and bring new innovations to the table. You will work with the latest tools and frameworks, crafting seamless user experiences that drive productivity and innovation. The ideal candidate is an enthusiastic go-getter, problem solver, and works with “there is always a “solution' attitude, combined with empathy and strong communication.
What You Will Do in This Role
- Building and developing new software features for our JustCall product.
- Working through the design, implementation, integration, testing, and deployment phases of project delivery.
- Provide software design and programming expertise to support research projects.
- Collaborating with cross-functional teams - Experimenting and reiterating on software basis feedback from customers/product & business stakeholders.
- Designing and developing new fast and robust algorithms to ensure that the platform supports millions of communications exchanges every month.
- Working with our engineering team to deploy and maintain research models in the production.
- Collaborating with the product and design teams on crafting great user experiences.
What you need to be successful
- 3-7 years of experience in ReactJS (not native), JavaScript, HTML5, and CSS3.
- Experience in designing and building systems for maximum performance, reliability, and scalability
- Experience in working with object-oriented programming with least one object-oriented programming language and understanding of browser caching.
- Experience with seamless integration of front-end to backend functionality.
- Knowledge of high-level programming concepts like promises, and data-binding.
- Ability to design relational database schema at scale with Tailwind experience, including concepts like layout, specificity, cross-browser compatibility, and accessibility.
- Proficient understanding of code versioning tools, such as Git.
- Experience with test-driven/behavior-driven development using automated testing tools.
Benefits and Perks
- Enjoy a 5-day work week with the flexibility to work from home 2 days a week.
- Take advantage of flexible holidays, allowing you to plan your vacations according to your needs.
- Celebrate collective success with frequent recognition of our team's efforts.
- Collaborate with a truly global team, spanning six countries.
SaaS Labs is a diverse international team of passionate problem solvers. With innovation, experimentation, and customer obsession at the heart of their ethos, the company has been honored with 30+ innovation awards including the coveted Deloitte Technology Fast 50 and FT High Growth Companies (Asia Pacific). We are an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We would love to work with you. Apply now!
Requirements:
- Bachelor’s degree in computer science, computer engineering or similar.
- Previous work experience as an AngularJS developer.
- Proficient in CSS, HTML, and writing cross-browser compatible code.
- Experience using JavaScript building tools like Gulp or Grunt.
- Knowledge of JavaScript MV-VM/MVC frameworks including AngluarJS.
- Technical lead skills. Can handle a team or independent technical delivery
- Proven experience implementing front-end and back-end JavaScript applications.
- Excellent communication skills.
- Critical thinker and good problem-solver.
Minimum two year of experience in React is required for this position.
- Responsible for requirements understanding, propose architecture, detailed design,
- development and timely deliverables with the highest quality standards.
- We are looking for Product creators who can work with minimum inputs from business and are able to deliver products quickly and with quality.
- This person should have worked in Enterprise class product from scratch.
- Start-up experience would be highly desirable.
- Tech Stack: React.js, HTML, CSS, AWS, MySQL, Razor Pay, Google Analytics, SEO, Dev Ops, CI/CD Pipeline
• Working with the technical manager, understanding requirements, documents, and
develops with clean and maintainable code, and works with members to foster growth
within the team.
• Analyses, designs, programs, resolve bugs, supports, and modifies software for
enhancements and/or new feature development.
• Estimates work based on requirements.
• Develop user interface components and implementing them following well-known
React.js workflows (such as Redux), React hooks, react-router with Javascript ES6.
• Develop and maintain excellent React Native applications with clean code.
• Optimizing components for maximum performance.
• Work with modern tools like Jira, Git, Google Docs, etc
• Highly motivated, enthusiastic, and self-learner.
• Partnering with others to solve problems quickly and efficiently
Qualifications
• BE / B.Tech / MCA
• 5 – 8 years of experience in Front-end development.
• Expertise in HTML5, CSS, React Js / JavaScript (ES6), DOM manipulation and
the JavaScript object model.
• Experience with popular React.js workflows (such as Redux)
• Experience working with ReactNative and understanding of ReactNative best
Practices would be added advantage.
• Proficient understanding of code versioning tools, such as Git
• Basic understanding of CSS pre-processing platforms, such as LESS and SASS
• Familiarity with RESTful APIs
• Having knowledge of Unit-Test/Java/Spring will be an added advantage
• Knowledge of modern authorization mechanisms, such as JSON and Web Token
• Demonstrates deep expertise in specific coding concepts and/or languages,
• especially around modern application architectures.
• Experience with web applications that use responsive design to better support mobile
browsers
We are more interested in what you CAN DO than your location, education, or
experience levels.
Location- Anywhere in India with remote working (Base location Mumbai/Pune)
Send us your code samples / GitHub profile / published articles if applicable.
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
Responsibilities:
● Take end to end ownership of all products right from conceptualization till production.
● Develop cross-platform user-facing features using React JS.
● Drive major frontend architecture decisions along with Product Managers and
Engineering Head.
● Building reusable components and front-end libraries for future use.
● Translating designs and wireframes into high-quality code.
● Optimizing components for maximum performance across a vast array of
web-capable devices and browsers
Requirements:
● 6+ years of relevant experience in core frontend technologies (JS, React,
Redux,GraphQL)
● You're an engineer by heart and not just a developer.
● You're innovative and able to pitch ideas to your colleagues.
● You're able to work with Product Managers, Designers and call out things upfront
from an engineering perspective.
Be a part of one of the best IT companies that is making it easier for businesses and customers to interact with each other, efficiently and economically too.
Our client is a global platform that provides exceptional customer engagement through chatbots and various channels for their business clients. They have made their presence known across verticals, small and large businesses and even in emerging markets. The objective of their messaging platform is to create a rich experience for the marketing, sales and support teams using messaging channels, device manufacturers and operators.
They are currently working with nearly 40 thousand brands, serving almost 6 billion messages per month. Their clientele includes well-known giants such as HDFC Bank, Twitter, FB, Whatsapp, Google, LinkedIn, Zomato, Citibank, Vogue and many more. With offices based in the USA, Brazil, Mexico and India, their team has become an integral part of their clients’ numerous customer success stories.
As a Frontend Developer, you will be required to be an expert in technologies such as HTML, CSS, Javascript, ReactJS, UI Design tools, Wireframe tools etc. and work on the Frontend development of our products/ services.
What you will do:
- Designing and developing a UI framework that can be used across multiple products and website
- Working on optimization of the web application/ websites and keeping knowledge of tools used to benchmark the performance.
- Being aware of agile development (short sprints) and helping the team with debugging and troubleshooting issues.
- Learning newer technologies in UI/UX and guiding the team in delivering quality results.
What you need to have:
- 1 - 7 years of experience in front end development
- Be an expert in technologies such as HTML, CSS, Javascript, ReactJS, UI Design tools, Wireframe tools etc.
- Good experience in HTML, CSS, Java scripting
- Knowledge/experience in React js/ Redux/ Vue Js is required
- Good knowledge on UI design tools and wire frame tools
- Experience in designing UI framework
● Take part in applications GUI development (including its UI and 3D elements).
● Champion the latest UI technologies using React, SCSS, CSS, JavaScript.
● Be responsible for working with business owners to propose high-quality user
experience solutions for web applications.
● Collaborate with Business Analysis and UI/UX teams to help them to implement use
case scenarios and provide the best customer experience.
● Be responsible for design and implementation of UI components in React.
● Develop web-based user interfaces, applications, and Web Service integration APIs
using REST API.
● Work as a team with backend developers and other front-end developers to provide
full end-to-end solutions.
● Interact with the SQA team to ensure high quality of the software delivered.
● Be responsible for working with the configuration management and administration
teams to provide accurate build and deployment instructions.
● Ensure application development principles, standards, and best practices are followed
for each project.
Skills & Experience:
● Understanding of key design principles.
● Proficiency in HTML, CSS, JavaScript, and jQuery.
● DS & Algo
● Understanding of server-side CSS.
● Experience with responsive and adaptive design.
● Good problem-solving skills.
● Determining the structure and design of web pages.
● Ensuring user experience determines design choices.
● Developing features to enhance the user experience.
● Ensuring web design is optimized for smartphones.
● Building reusable code for future use.
● Optimizing web pages for maximum speed and scalability.
● Utilizing a variety of markup languages to write web pages.
● Maintaining brand consistency throughout the design.
Technical Skills:
- Strong proficiency in JavaScript, object model, DOM manipulation and event handlers, data structures, algorithms, JSX, and Babel
- Complete understanding of ReactJS and its main fundamentals like JSX, Virtual DOM, component lifecycle, etc.
- Preceding experience with ReactJS workflows like Flux, Redux, Create React App, data structure libraries
- Understanding of RESTful APIs/GraphQL, HTML/CSS, ES6 (variables and scoping, array methods), code versioning tools like GIT, SVN, etc., popular frontend development tools, CI/CD tools, DevOps, performance testing frameworks like Mocha, Node + NPM
- Preferred degree in Computer Science, Information Technology or similar
JOB SUMMARY:
The Senior Software Engineer designs, develops, troubleshoots, and debugs software applications for our core product. This includes developing software components including Frameworks, APIs, Websites, Utilities, Databases, and Internet-related tools. Demonstrate technical leadership, mentor junior team members, contribute in effort estimation and identify hardware needs.
MINIMUM QUALIFICATIONS AND REQUIREMENTS:
- Bachelor’s Degree in Computer Science or equivalent
- 4+ years working with React Js, exposure to Ember JS will be an advantage
- 5-12 years of industry experience in programming web applications, mobile and/or large-scale enterprise products.
- Proficient in JavaScript, CSS
- Strong experience in one of the following JavaScript frameworks: Ember, React, Angular
- Experience in XML, HTML, IIS
- Familiar with Agile methodologies
- Sense of ownership
- Passion for troubleshooting and problem solving
- Detailed oriented, professional, and possesses a positive work attitude
- Communicate professionally both verbally and in writing
- Extensive experience creating high-quality software in a team environment
- Experience leading projects from start to finish
- Experience with test-driven development (TDD) and/or writing and maintaining high-level test coverage, including both unit and integration tests








