Senior UI Developer

Wissen Technology is Hiring for React Developer

About Wissen Technology:

At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide. Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Today, Wissen Technology has a global footprint with 2000+ employees across offices in the US, UK, UAE, India, and Australia. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality. We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more. Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.

Job Summary:

We are seeking highly motivated React Developer

Experience: 8+ Years

Location: Pune/ Mumbai

Mode of Work: Full Time

Key Responsibilities:

• Should have 8+ years hands on experience in web technologies like JavaScript, HTML5 & CSS.

• Expert level knowledge of JavaScript including latest edition(s) of JavaScript (ES2023). Knowledge of typescript is a plus.

• Hands on experience with JavaScript frameworks like React 17 and above versions

• Good understanding of asynchronous request handling, partial page updates like Promises, RxJS

• Proficient in advanced CSS3, HTML5 and Bootstrap. Exposure to css-in-js libraries like styledjs or others is beneficial.

• Able to translate mockups in figma or illustrator to actual working components.

• Working experience on testing tool like karma/jasmine/enzyme.

• Basic understanding of nodejs is beneficial.

• Proficient understanding of code versioning tools, such as Git

• Excellent analytical/reasoning skills

• Good team player

• Excellent written and verbal communication skill

Who We Are

Nudge enables consumer companies to personalize shopper journeys without depending on developer bandwidth. We believe the future of commerce lies in enabling every brand to create dynamic, personalized experiences at scale. Our SDKs power these experiences, letting companies configure UI/UX directly from our dashboard without additional engineering work.

We’re backed by leading global investors and are building a team in Bangalore that thrives on energy, curiosity, and ownership. We value strong opinions held loosely: we love people who care deeply about their craft, but who are flexible and collaborative when building together.

The Opportunity

We are looking for a founding Frontend Engineer with a strong foundation in Javascript and web technologies. In this role, you will design and maintain our Dashboards are web SDKs that are used by consumer apps. You’ll be solving real challenges of scale, performance, and security.

At Nudge, engineers own the product end-to-end. You won’t just receive PRDs to execute on, you’ll play an active role in shaping the product roadmap, influencing technical and product decisions, and ensuring what we build truly serves our customers.

What You’ll Do

• Lead development of our customer-facing interfaces: Dashboard, Chrome Extension, and Web SDK.
• Collaborate with product and design from idea to implementation - owning features end-to-end.
• Write modular, maintainable code that scales across use cases and user types.
• Shape our frontend architecture and tech stack as we scale.
• Continuously improve performance—through bundle optimization, caching, or efficient state management.
• Use TypeScript, React, Next.js, Redux Toolkit, React Query, and browser storage tools (localStorage, sessionStorage, cookies) to build seamless, fast experiences.

What We’re Looking For

• 3–5 years of professional experience in web development.
• Experience building or maintaining SDKs, libraries, or frameworks that ship to external developers.
• Strong understanding of fundamentals, internals, and system design.
• Proficiency in networking (HTTP, WebSockets) and local data persistence.
• Experience working with large language models (LLMs) in production.
• Familiarity with LangChain or Vercel AI SDK.
• Experience with server-driven UI and dynamic component rendering is a strong plus.

Job Description 

As an Angular UI + DevOps Engineer, you will be responsible for designing, implementing, and maintaining our applications UI as well as infrastructure and CI/CD pipelines. You will work closely with our development, operations, and QA teams to ensure smooth and efficient software delivery. 

Responsibilities 

-Application Development: Design, develop, and maintain scalable and maintainable software applications using Angular 19. 

-DevOps Integration: Implement and manage DevOps practices to streamline the development, testing, and deployment processes. 

-Collaboration: Work closely with cross-functional teams, including backend developers, designers, and system administrators, to ensure seamless integration and delivery. 

-Performance Optimization: Ensure high performance and responsiveness of applications across various devices and platforms. 

-Code Quality: Write clean, efficient, and well-documented code; conduct code reviews to maintain quality standards. 

-Continuous Improvement: Stay updated with the latest industry trends and technologies to continuously improve development processes and application performance. 

Requirements 

-Experience: 5 to 9 years of professional experience in software development, with a strong focus on Angular 19 and DevOps practices. 

Technical Skills: 

-Proficiency in Angular 19, HTML5, CSS3, JavaScript, and TypeScript. 

-Experience with DevOps tools and practices, including CI/CD pipelines, version control systems (e.g., Git), and containerization technologies (e.g., Docker, Kubernetes). 

-Knowledge of RESTful APIs and web services. 

Soft Skills: 

-Strong problem-solving abilities and analytical skills. 

-Excellent communication and teamwork skills. 

-Ability to work in an Agile development environment. 

Preferred Qualifications: 

-Experience with additional front-end frameworks or libraries (e.g., React, Vue.js). 

-Certifications in DevOps or cloud technologies. 

-Experience with automated testing frameworks and tools 

-Familiarity with cloud platforms such as Azure, AWS, or Google Cloud. 

Job Description:

We are looking for a good JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.

Responsibilities

• Developing new user-facing features using React.js
• 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

Skills:

• 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 (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
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial)

Key Responsibilities:

• Develop and maintain the frontend components of the Camera AI and gym & trainer management software.
• Collaborate with UI/UX designers to translate design concepts into functional, responsive web applications.
• Ensure the applications are optimized for performance, scalability, and cross-browser compatibility.
• Implement user interfaces that provide a seamless experience, including real-time data visualization, interactive elements, and responsive design.
• Work closely with backend engineers to integrate APIs and ensure smooth communication between frontend and backend systems.
• Conduct thorough testing and debugging to ensure the stability and performance of the applications.
• Stay up-to-date with the latest trends and best practices in frontend development and apply them to enhance our products.

Qualifications:

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• 5+ years of experience in frontend development.
• Proficiency in HTML, CSS, JavaScript, and modern frontend frameworks such as React, Angular, or Vue.js.
• Experience with responsive design principles and front-end optimization techniques.
• Strong understanding of RESTful API integration.
• Familiarity with version control systems (e.g., Git).
• Ability to write clean, maintainable, and efficient code.
• Excellent problem-solving skills and attention to detail.
• Ability to work collaboratively in a fast-paced, dynamic environment.

Preferred Qualifications:

• Experience working with WebRTC or other real-time communication technologies.
• Familiarity with frontend testing frameworks and tools (e.g., Jest, Cypress).
• Knowledge of UI/UX best practices.
• Experience with Agile development methodologies.

We are looking for a React Native developer interested in building performant mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

• 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.

What You’ll Do

• Should be able to develop an application with vanilla Javascript without any frameworks.
• Maintain reusable code and improve code quality.
• Optimize application for maximum speed.
• Should take ownership and work closely with other teams. such as back-end.
• Make suggestions for better solutions to problems and keep abreast of the latest and emerging technologies.
• Be comfortable working throughout the lifespan of a project.

Who you are

• Should have minimum 5+ years of experience.
• Proficient understanding of web markup, including HTML5, CSS3 and vanilla JavaScript.
• Should have good knowledge on ES6.
• Understanding of CSS pre-processing platforms, such as LESS and SASS.
• Should be proficient any of the the frameworks  ReactJs, VueJs etc.
• Should have knowledge on Node Js.
• Should have hands on experience web component development.
• Good understanding of Responsive Web Designing, CSS media queries and Bootstrap library.
• Understanding of cross-browser compatibility issues and ways to work around them.
• Good understanding of asynchronous/Ajax request handling.
• Good understanding of OOJS.
• Knowledge of code versioning tools, such as GIT.
• Knowledge in writing UI test cases using any test framework.

Education

• Bachelor's  degree in Computer Science, Engineering or equivalent demonstrable experience. 

Benefits

• In addition to competitive salaries and benefits packages, Nisum India offers its employees some unique and fun extras:
• Continuous Learning - Year-round training sessions are offered as part of skill enhancement certifications sponsored by the company on an as need basis. We support our team to excel in their field.
• Parental Medical Insurance - Nisum believes our team is the heart of our business and we want to make sure to take care of the heart of theirs. We offer opt-in parental medical insurance in addition to our medical benefits.
• Activities -From the Nisum Premier League's cricket tournaments to hosted Hack-a-thon, Nisum employees can participate in a variety of team building activities such as skits, dances performance in addition to festival celebrations.
• Free Meals - Free snacks and dinner is provided on a daily basis, in addition to subsidized lunch.

Crownstack is a premium organisation that specializes in providing innovative digital technology solutions to various enterprises including startups, small and medium-sized businesses and Fortune 500 companies across the globe. Our services include, but are not limited to, UI design, mobile app and web development, Cloud computing, data analytics, and Dev Ops. We take pride in our ingenious, meticulous, and skilled workforce who aim to deliver sustainable and cutting-edge business and technology solutions to all our clients. ★ 100+ Successful Apps Delivered | ★ Enterprise and Startup Clients | ★ Scalable Products | ★ MEAN Stack | ★ Python, pHp, NodeJs | ★ Agile Development | ★ Best UI/UX Award

Crownstack is looking for ReactJs Developers to join our team and deliver a streamlined user experience. We want a team member who strives to develop a first-class codebase using ReactJs best practices. As a React Developer, you will implement a complete user interface across our mobile and desktop web interfaces.

Job Location: Gurgaon/Noida

Experience: 2+ years  

Roles and Responsibilities

• Develop user interfaces with the latest frontend technologies
• Research, analyze, and develop product features of increasingly complex nature
• Code tested and documented JavaScript, HTML, PUG and CSS
• Make design and technical decisions for ReactJs projects.
• Develop application code and unit testing in the ReactJs with REST APIs
• Ensure high performance of all systems developed

Skills and Qualifications

• 2+ years experience with ReactJs
• Strong expertise with HTML, CSS, and writing cross-browser compatible code.
• Experienced in Typescript is a plus
• Familiarity with testing frameworks (Ex. Enzyme)
• Experience in building highly reusable and decoupled components
• Experience in State management Libraries like Redux, mobx
• Critical thinking and problem-solving skills
• Good time-management skills
• Great interpersonal and communication skills

Responsibilities

• Delivering a complete front end application
• Ensuring high performance on mobile and desktop
• Writing tested, idiomatic, and documented JavaScript, HTML and CSS
• Coordinating the workflow between the graphic designer, the HTML coder, and yourself
• Cooperating with the back-end developer in the process of building the RESTful API
• Communicating with external web services

Skills and Qualifications

• Proficiency with JavaScript and HTML5
• Professional, precise communication skills
• Deep knowledge of AngularJS 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
• Ability to provide SEO solutions for single page apps
• Extensive knowledge of CSS and JS methods for providing performant visual effects and keeping the framerate above 30fps at all times
• Thorough understanding of the responsibilities of the platform, database, API, caching layer, proxies, and other web services used in the system
• 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 AngularJS
• Experience with all levels of operation available to the front-end, such as from creating XHRs in vanilla JS to using a custom wrapper around $resource
• Experience with building the infrastructure for serving the front-end app and assets
• Architecting and automating the build process for production, using task runners or scripts
• Documenting the code inline using JSDoc or other conventions
• Writing extensive unit tests using automated TDD tasks
• Creating e2e test suites for all components, and running them with Protractor (or a well reasoned alternative)
• Creating configuration, build, and test scripts for Continuous Integration environments