Frontend Developer

Ideal Candidate

8+ years of experience in front-end development, with at least 3–5 years in technical/architectural leadership roles across web and mobile platforms.

Expert in React.js and React Native, with hands-on experience designing and building scalable, modular applications using modern front-end frameworks and reusable component libraries.

Strong geospatial capabilities—proven experience integrating and optimizing mapping solutions (e.g., Google Maps, HERE Maps) with features like routing, clustering, and overlays.

Mobile-first mindset, with deep knowledge of responsive UI design, performance optimization for low-bandwidth environments, and cross-platform compatibility.

Architectural expertise in modular design, micro-frontends, SSR/SSG, PWAs, and cross-platform solutions—ideally with experience in monorepo environments and BFF patterns.

Technical leadership skills, including mentoring developers, enforcing best practices, driving autonomous development, and aligning technical solutions with business needs.

CI/CD & DevOps familiarity—strong understanding of build tools (Webpack, Vite, Metro), containerization (Docker), and deployment automation using Jenkins, GitLab CI, etc.

Security, accessibility, and testing focus—capable of implementing WCAG-compliant UIs, secure data handling, and robust test strategies using tools like Jest, Cypress, Detox, and Appium

We are seeking a highly motivated Software Development Engineer with expertise in building scalable, extensible and user-friendly web applications. You will work with a fast paced Product Engineering team to build efficient and reusable web applications for mobile and fixed devices. 

What you’ll do:

• Architect, Design, Code reviews and build scalable applications.
• You will be engaged in identifying and addressing performance bottlenecks, and collaborate with other team members to innovate current/new products. 
• Identify, communicate and implement best practices for application engineering. 
• Ensure high scalability and performance

• You will advocate for good, clean, well-documented and performing code; define and follow standards and best practices for front-end development.

We’d love for you to have:

• Experience: 1-3 yrs recent experience of working in a scalable web product firm
• Education: B.Tech/M.Tech  in Computer Science from Top ranked colleges in India
• Excellent software development skills in developing web applications over client-side frameworks - Backbone, React (preferred) and/or angular frameworks (preferred); and server-side frameworks like node.js
• Excellent programming skills in object-oriented, modularised JavaScript, Typescript (preferred)
• Strong knowledge and working experience in server-side Event-driven programming using Node.js
• Excellent programming skills in Javascript,  jQuery, AJAX, YUI.
• Passion for writing optimized code using JS best practices  and design patterns
• Experience with JS or Java-based Unit/Integration Testing using Selenium, Appium, Selendroid
• Hands-on experience in building scalable web applications
• Excellent problem solving and debugging skills
• Good Knowledge of version control - GIT (preferred)
• Experience with the full software development lifecycle, design, develop, debug, document, and deliver (especially in a multiple site organization)
• Strong verbal and written communication skills
• Ability to deliver great results in an agile development
• Good to have: Working knowledge of web standards (i.e., REST) and OOPS
• Good to have: Experience in Data Structures, Algorithms and their optimization

Even if you don’t meet all of these qualifications above, we’d still love to hear from you. Tell us about your unique qualifications in your cover letter.

CaaStle is committed to equality of opportunity in employment. It has been and will continue to be the policy of CaaStle to provide full and equal employment opportunities to all employees and candidates for employment without regard to race, color, religion, national or ethnic origin, veteran status, age, sexual orientation, gender identity, or physical or mental disability. This policy applies to all terms, conditions and privileges of employment, such as those pertaining to training, transfer, promotion, compensation and recreational programs.

We are looking for a Frontend/Platform Operator to ensure the smooth day-to-day operations of our E-lock GPS web-based platform. This role involves monitoring the platform’s performance, resolving minor frontend issues, and reporting bugs to the development team.

Key Responsibilities:

• Monitor the frontend of the web platform for glitches, bugs, or user-reported issues.
• Perform minor frontend updates (HTML/CSS) as needed.
• Collaborate with the IT Administrator and report major issues to the developers.
• Provide user support for platform-related queries (internal team or customers).
• Document platform performance and generate basic usage reports.

Skills Required:

• Basic knowledge of HTML, CSS, and JavaScript.
• Familiarity with frontend frameworks like React.js or basic debugging tools (preferred).
• Understanding of how frontend and backend APIs work together.
• Strong communication skills for reporting issues and collaborating with other teams.

Education and Experience:

• Bachelor’s degree in IT, Computer Science, or related field (preferred).
• 1-2 years of experience in web operations, frontend development, or technical support.

NOTE: We’re inviting applications for a 6-month internship in Frontend/Platform Operator at Mondiale Technologies, a company at the forefront of smart logistics and IoT-based tracking solutions

Eligibility: Final-year students or fresh graduates in BCA / B.Sc. IT / B.Tech / MCA / Diploma in Computer Science or related fields

Internship Highlights:

• Hands-on experience managing and operating our real-time asset tracking web platform
• Support platform users by monitoring dashboards, raising tickets, and resolving basic interface issues
• Coordinate with tech and support teams for data validations and updates
• Exposure to frontend tools, UI testing, and client-side reporting
• Learn to work in a live SaaS environment used by logistics and fleet management teams

Stipend: YES

✅ Pre-placement offer for high-performing candidates

Candidates who successfully complete the internship and demonstrate strong performance will be offered a regular full-time role within the company.

Software Solution Engineer – UI Development

(1-3 yrs of experience)

• 1-3 years of software development experience in Web Development.
• Willing to learn new technologies and frameworks.
• Demonstrable knowledge of web technologies including HTML, CSS, JavaScript,
AJAX,Bootstrap,React JS, jQuery etc.
• Self-starter with strong self-management skills.
• Ability to organize and manage multiple priorities. Basic knowledge of programming
languages.
• A team player with high level of dedication.

Job Description

We are looking for an expert JavaScript developer who is skilled with Vue.js or ( Angular or React latest). Your primary focus will be developing user-facing web applications and components. You’ll implement them with the Vue.js framework, following generally accepted practices and workflows. You will ensure that you produce robust, secure, modular, and maintainable code. You will coordinate with other team members, including back-end developers and UX/UI designers. Your commitment to team collaboration, perfect communication, and a quality product is crucial.

Responsibilities

• Developing user-facing applications using Vue.js
• Building modular and reusable components and libraries, Optimizing your application for performance
• Designing features and applications for mobile and multiple screen sizes
• Implementing automated testing integrated into development and maintenance workflows
• Staying up-to-date with all recent developments in the JavaScript and Vue.js space
• Creating prototypes for testing for functionality testing

Skills

• Highly proficient with the JavaScript language and its modern ES6+ syntax and features
• Highly proficient with Vue.js framework and its core principles such as components, reactivity, and the virtual DOM
• Familiarity with the Vue.js ecosystem or any other latest versions fronted js like Angular and react
• Good understanding of HTML5 and CSS3, including SASS, SCSS
• Understanding of server-side rendering and its benefits and use cases
• Knowledge of functional programming and object-oriented programming paradigms
• Ability to write efficient, secure, well-documented, and clean JavaScript code
• Familiarity with automated JavaScript testing
• Proficiency with modern development tools, like Git
• Experience with both consuming and designing RESTful APIs

Experience

• 4+ Years of experience in UI development role in product based organization.
• Should possess experience in handling a team of developers.

Job Description:

We are looking for an experienced JavaScript developer who is proficient with React.js. The primary focus of the selected candidate would be on developing user interface components implementing and executing them following well-known React.js workflows (such as Flux or Redux). Also ensuring that these components and the overall application are robust and easy to manage. A commitment to collaborative problem solving, sophisticated design, and quality products are important.

Responsibilities:

• Developing the latest user-facing features using React.js
• Designing a modern highly responsive web-based user interface
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high-quality code
• Learn and understand user interactions
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers
• Coordinating with various teams working on distinct layers
• As a React.js Developer, you will be involved from conception to completion with projects that are technologically sound and aesthetically impressive. 

Technical skills:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles
• Prior experience with popular React.js workflows (such as Flux or Redux)
• Familiarity with more current specifications of ECMAScript
• Prior experience with data structure libraries (e.g., Immutable.js)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs
• Familiarity with HTML / CSS
• GIT experience is a plus
• 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 optimization

• Experience building ReactNative apps
• Prior experience building scalable web and mobile web apps
• working in a super fast moving product startup
• Experience working with server side rendering, websockets etc

• Work on the most modern tech stack at the frontier of two of the hottest technology trends: Video and Mar-tech.
• Market leading compensation: salary plus equity
• Opportunity to work with tech's best talent spread across 5 continents: team mates come from the likes of InMobi, Walmart, Goldman Sachs, BCG.
• An incredible culture with a great blend of hustle, productivity and a ton of fun.
• Fully remote! Work from home, Goa, Europe- wherever you want to be.
• Potential opportunities to travel to the US

Headquartered in Silicon Valley, Gupshup is a global leader in cloud messaging, enabling businesses to build engaging conversational experiences, seamlessly across 30+ messaging channels, using a globally available cloud API.

Gupshup handles over 4.5 billion messages per month and has processed over 225 billion messages, enabling over 36,000 businesses to engage nearly a billion users across channels including SMS, WhatsApp, Facebook Messenger, Twitter, WeChat, Viber, Slack, Android RCS, Mobile App and Mobile Web.

Gupshup offers a comprehensive product portfolio that includes an easy to use omni-channel messaging API, advanced bot building platform and mobile marketing tools. Gupshup has also forged strategic partnerships with Facebook, WhatsApp, Google and Cisco to offer innovative mobile messaging solutions with broad reach.

We have an opportunity for Software Engineer-UI

Job Responsibilities: