

We do have opening with our company Crownstack Technologies for React.Js Developer. Interested candidate can share their CV.
About us
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
Job Description
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.
Requirements
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

About Crownstack Technologies
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About koolio.ai
Website: www.koolio.ai
koolio Inc. is a cutting-edge Silicon Valley startup dedicated to transforming how stories are told through audio. Our mission is to democratize audio content creation by empowering individuals and businesses to effortlessly produce high-quality, professional-grade content. Leveraging AI and intuitive web-based tools, koolio.ai enables creators to craft, edit, and distribute audio content—from storytelling to educational materials, brand marketing, and beyond—easily. We are passionate about helping people and organizations share their voices, fostering creativity, collaboration, and engaging storytelling for a wide range of use cases.
About the Full-Time Position
We are looking for a Junior Frontend Engineer to join our fast-growing team on a full-time, hybrid basis. You will be a key contributor in enhancing the user interface of koolio.ai’s AI-powered platform, driving innovation and excellence in audio content creation. You will collaborate closely with senior developers and designers to deliver high-performance, user-friendly web applications that delight our customers.
Key Responsibilities:
- Collaborate with the product and design teams to develop and implement user-friendly web interfaces
- Write clean, efficient, and reusable code using modern frontend technologies
- Ensure responsive design and optimize web pages for performance and scalability across devices
- Debug and resolve issues, improving the overall user experience on the platform
- Assist in integrating APIs and frontend services with the backend
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Requirements and Skills:
- Education: Degree in Computer Science or a related field
- Work Experience: Minimum of 1-2 years of proven experience as a Front-end Engineer or similar role with a focus on user interface development
- Technical Skills:
- Strong proficiency in JavaScript frameworks like ReactJS or Redux
- Proficiency in frontend languages such as HTML, CSS, and JavaScript (ES6+)
- Experience with CSS frameworks (e.g., Bootstrap or Tailwind CSS) for responsive design
- Basic understanding of REST APIs and integration with frontend applications
- Knowledge of version control systems (e.g., Git) and best practices in code management
- Soft Skills:
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- Ability to work effectively in a remote, collaborative environment with distributed teams
- Willingness to learn new technologies and adapt to a fast-paced startup environment
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- Other Skills:
- Familiarity with Figma or other design tools is a plus.
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Compensation and Benefits:
- Total Yearly Compensation: ₹8-12 LPA based on skills and experience
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Why Join Us?
- Be a part of a passionate and visionary team at the forefront of audio content creation
- Work on an exciting, evolving product that is reshaping the way audio content is created and consumed
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At Sudoviz, you will work closely with Product Management, Frontend, Backend engineers, and Data scientists that work hard to ensure that Sudoviz's products and platforms are helping our customer's most pressing security problems through intuitive and creative UI solutions.
You will develop secure, and well-tested, and performant features.
As a UI Rockstar, you will craft and code our internal standards for style, maintainability and document best practices for a high-scale web environment. You will maintain and advocate standards through peer code review while consistently shipping incremental features and improvements with minimal guidance.
You will own end-to-end delivery of product features, learn, collaborate and help train other Frontend Engineers joining the team.
Frontend Developer Responsibilities:
- Outstanding Professional experience with React, VueJS, and other modern JavaScript web frameworks such as Angular, Ember, etc
- Experience with writing automated tests using Jest, Karma, Jasmine, Mocha, AVA, tape, etc
- A solid understanding of JavaScript
- Core web and browser concepts (eg. how browsers work? how the rendering engine constructs a website page
- Reviewing application requirements and interface designs.
- Identifying web-based user interactions.
- Experience with user interface design
- Developing and implementing highly responsive user interface components using React concepts.
- Developing and implementing frontend architecture to support user interface concepts.
- Design an architecture to support complex data labeling and filtering from multiple sources
- Research how to optimally model and display multidimensional data (e.g. D3 graphs and complex tables)
- Build a framework to support a user-friendly querying language
- Build a comprehensive UI dashboard from the ground up
- Team player - collaborate with Product Designers and Product Managers in order to develop an incredible user experience
Must have
- Excellent communication and documentation skills
- Bachelor's degree in Computer Science
- Good project management skills
- In-depth knowledge of JavaScript, CSS, HTML, and frontend languages.
- Knowledge of REACT tools Webpack, Enzyme, Redux, and Flux.
- Knowledge of performance testing frameworks, including Mocha and Jest.
- Experience with browser-based debugging and performance testing software
Nice to have
- Master's in Computer Science or equivalent/similar
- Monitoring and improving frontend performance.
- Experience in peak performance organizations/product companies
- Experience working with a remote team with a global culturally diverse team
- Passion for open source
Communication
- Proficiency in Written and Verbal communication for success in a remote asynchronous collaboration work environment
- Clearly and concisely communicate about complex technical, architectural problems
Mindset
- Positive solution-oriented mindset with demonstrated ability to onboard and integrate with an organization long-term
- Ability to achieve consensus with peers and clearly share status updates
- Self-motivated and Self managing individual with excellent organizational skills
About the position
We're looking for an experienced and motivated Frontend Developer to join our growing Engineering department. As a Frontend developer you will work closely with the founding team on building an exciting and unique new AppSec management tool. The ideal candidate will be able to work both independently and in a team, collaborating with other team members in product, UX/UI and R&D. It’s a great opportunity to join at an early stage and help shape the future of Application Security Posture Management.
Requirements:
- At least 3 years of experience in web development
- Expert-level JavaScript skills
- Advanced experience with React and Redux

- As a lead engineer, you will be expected to execute and deliver large and complex projects end-to-end, with or without the involvement of other team members.
- Participate in code reviews, app architecture, and design discussions.
- Ensuring timely delivery of all product deliverables.
- Be the go-to person for the team for guidance and troubleshooting.
- Mentoring junior developers and set best practices for coding, reviews, etc.
- Ensuring performance and scalability in all new product features being developed.
You need to have:
- Overall of 5+ years expertise in writing HTML/CSS/JavaScript
- Experience in Angular and preferably React.js
- Expertise in database modeling, preferably relational DB, spotting DB bottlenecks, and writing optimized DB queries.
- Expertise in all common AWS cloud technologies, knowledge of CI/CD tools, and workflows.


As a Front-end Developer, your responsibility would be to create visual elements that users see and interact within our web platform. This makes your role crucial for the success of the product. We are looking for an exceptional problem solver, with attention to details. You will be working closely with design, product management and development teams to create elegant, usable, responsive and interactive interfaces across multiple devices.
You must take responsible actions in ensuring the application is optimised both in terms of technology and in delivering the best educational content.
Responsibilities:
- Build web platform for our live tutoring platform
- Creating interactive learning activities for K12 students
- Work on upcoming products
Requirements:
- Great programming skills
- Fundamentals of JavaScript and ES modules, new ECMASCRIPT concepts
- Experience in ReactJS web app development (1-4 years)
Brownie Points:
- Good HTML and CSS skills
- Experience in React-Native app development
- Ability to work in small teams and wear multiple hats
Ono Labs Private Limited is committed to providing equal opportunities without any discrimination on the grounds of age, ancestry, marital status, color, physical or mental disability, origin, nationality, political affiliation, religion, race, gender, sexual orientation, and any other characteristics protected by applicable law, regulations, and ordinances.


We are looking for a Product Engineer - Frontend Engineer to join our early stage startup with experience in building B2C products.
If you have experience of working in product based companies (preferably startups), good to excellent coding skills in react js and typescript, have a keen eye for details in the UI, and are looking to build exciting things that children across the world will use - come talk to us!
What you get to do:
- Design and build advanced applications from scratch keeping scalability and performance in mind
- A good handle on both client and server architecture.
- Work on bug fixing and improving application performance.
- Comfortable in owning large scale products and continuously re-evaluating and innovating.
Who are we looking for:
- Bachelor's degree or equivalent in Computer Science
- 1+ years' experience in frontend development
- Familiarity using Scrum/Agile development methodologies
- Experience building object oriented web applications in React JS, Typescript, HTML5, and CSS3
- Should be a quick learner and willing to go the extra mile in delivering the projects.
- Should be able to mentor junior folks whenever necessary.

• Solid understanding of web markup, including HTML5, CSS3 and cross-browser compatibility issues. Basic understanding of LESS or SASS.
• Proficient in ReactJS/AngularJS/VueJS
• Solid understanding of SEO principles
• Good understanding of module bundling tools like webpack
• Should have some experience in cloud computing
• Has an ability to quickly learn and contribute in multiple codebase
• Overcomes roadblocks and requires minimal oversight • Takes initiatives to fix issues/tech debts before assigned to him/her
• Able to deep dive into codebase and advise QA of possible regression impact
• Communicates tech decisions through design docs and tech talks
• Has delivered projects with end-to-end accountability
• Keeps track of industry trends and introduces right tech/tools for a given job
• Excellent understanding of software engineering practices, Design Patterns, Data Structures, Algorithms • 5+ years of experience in product driven organization.

This person MUST have:
- BE Computer Science, MCA or equivalent
- Extreme CSS skills
- Experience with ReactJS or NextJS is a MUST
- Strong communication skills
- A strong passion for writing simple, clean and efficient code.
- Sound knowledge of clean code, no unused code, optimized code and more. - Always starting with a document and then implementing in a systematic and organized manner
- Past experience as a frontend developer building modern JavaScript-based web applications - Excellent verbal and written communication, teamwork, decision making and influencing skills.
Experience:
- Min 3 year experience
- Not more than 15 year experience.
- Startup experience is a must.
Location
- Remotely, anywhere in India
Timings:
- 40 hours a week but with 4 hours a day overlapping with client timezone. Typically clients are in California PST Timezone.
Position:
- Full time/Direct
- We have great benefits such as PF, medical insurance, 12 annual company holidays, 12 PTO leaves per year, annual increments, Diwali bonus, spot bonuses and other incentives etc.
- We dont believe in locking in people with large notice periods. You will stay here because you love the company. We have only a 15 days notice period.

We are looking for a software engineer who:
🙋 is curious and asks a lot of questions!
🤤 has good product taste.
⚡️ is passionate about writing clean code.
🕵 has strong problem solving skills.
🖥 can turn 1-pager specs into detailed features.
❣️ loves / appreciates automated testing!
😇 is humble, kind and has a good taste of sarcasm.
💻 has hands-on experience with JavaScript.
☀️ Non-mandatory, but nice to have:
👶🏻 worked in an early-stage startup.
🤟🏻 built and led a small engineering team.
✨ 2+years of experience.
💻 open source enthusiast.
🦄 You are passionate about teaching, learning and creator economy.
🤔 What's the interview process like?
We try to close the interview process within 3 days.
Take us through what excites you the most about this role/challenge.
A flexible project round.
Discussion with founders.
UI Developer
About OpsCruise
Digital business is driving a fundamental shift to cloud-native applications, creating a new set of operational and performance challenges ill-suited to the currently available solutions. At OpsCruise, we imagine a world of autonomous operations and are innovating a fundamentally different approach to performance management. OpsCruise’s vision is to automate the performance assurance of cloud applications using a model-driven closed-loop platform. Our engineering culture values pragmatism, honesty, and simplicity to solve hard problems the right way.
Reach me on shankar at opscruise.com
Role
We are looking for a Lead UI Engineer to design and build multiple channels for user interaction.
Responsibilities
- Design/Architect and develop core features of the UI/frontend.
- Design/Architect and develop policy framework to provide rich UI for various features of the solution.
Qualifications
The ideal candidate must have the following qualifications.
- Must have 6+ years of experience in working in frontend technologies
- Must have at least 2-3 years. of experience with Angular2 or above versions.
- Must have at least 5+ years of experience with HTML/CSS/JavaScript/TypeScript.
- Experience with PrimeNG and Vega is a plus
- Strong background in developing UI for Monitoring and Management systems, dealing with topology, and different telemetry such as metrics, traces and logs
- Familiar with containerization solutions like Docker/Kubernetes etc.
- Familiar with serverless technologies like AWS Lambda.
- B.E/B.Tech/MS degree in Computer Science, or equivalent
Most importantly, you should be someone who is creative and passionate about building new and innovative products that solve tough real-world problems.
Location.
Chennai, India

- Contribute to front-end development of web applications
- Handle production incidents
- Working closely with stakeholders to ensure a smooth user experience
- Build reusable components and front-end libraries for future use
- Translate designs and wireframes into high-quality code
Job Requirements:
- 2+ years experience in front-end web development is required
- Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
- Extensive experience in working with HTML5, CSS, Bootstrap and JavaScript
- Thorough understanding of React.js and its core principles
- Familiarity with newer specifications of EcmaScript
- Experience with common front-end development tools such as Babel, Webpack, NPM, etc
- Ability to understand business requirements and translate them into technical requirements
- Familiarity with code versioning tools (such as Git, SVN, etc)
- Experience in developing an application with cross-browser compatibility in IE, Firefox, Safari, Chrome, including tablets, phone, etc

