Frontend Developer

ReactNative ● Proficient in React, JavaScript (ES6+), and TypeScript. ● Expertise in state management libraries (Redux, Zustand, etc.). ● Hands-on experience with react-navigation and deep linking. ● Solid understanding of Expo (both managed and bare workflows). ● Knowledge of native development (Swift/Objective-C for iOS, Java/Kotlin for Android). ● Experience with custom native module bridging and native UI integration. ● Strong debugging skills using tools like Flipper and Chrome DevTools. ● Familiarity with Jest, React Native Testing Library. ● Experience with REST APIs, GraphQL, and real-time data (WebSockets). ● Ability to manage OTA updates with EAS Update and configure EAS Build. ● Experience in app publishing and release lifecycle on both Play Store and App Store. ● Knowledge of secure storage, token handling, and app-level security practices. 

Frontend Engineer – Admin Console & Workflow Studio

Responsibilities

• Build responsive UI in React / TypeScript / Tailwind CSS.
• Implement a visual workflow composer (drag-and-drop DAG builder).
• Integrate data from telemetry, governance, and Kernel APIs into rich dashboards.
• Optimize for accessibility, performance, and enterprise responsiveness.

Requirements

• 4 + years frontend engineering.
• Deep experience with state management (Redux / Zustand) and API integration.
• Eye for UX and interaction design for technical admin users.

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.

Job Location - Hyderabad & Ahmedabad

Skills required – Angular, ionic

What you'll do:

• Perform complex application programming activities with an emphasis on mobile development:  Angular, ionic, Node, TypeScript, JavaScript, Apache Cordova, RESTful APIs and more
• Assist in the definition of system architecture and detailed solution design that are scalable and extensible
• Collaborate with Product Owners, Designers, and other engineers on different permutations to find the best solution possible
• Own the quality of code and do your own testing. Automate feature testing and contribute UI testing framework
• Become a subject matter expert for our mobile applications
• Deliver amazing solutions to production that knock everyone’s socks off
• Mentor junior developers on the team

What we’re looking for:

• Amazing technical instincts. You know how to evaluate and choose the right technology and approach for the job. You have stories you could share about what problem you thought you were solving at first, but through testing and iteration, came to solve a much bigger and better problem that resulted in positive outcomes all-around.
• A love for learning. Technology is continually evolving around us, and you want to keep up to date to ensure we are using the right tech at the right time.
• A love for working in ambiguity—and making sense of it. You can take in a lot of disparate information and find common themes, recommend clear paths forward and iterate along the way. You don’t form an opinion and sell it as if it’s gospel; this is all about being flexible, agile, dependable, and responsive in the face of many moving parts.
• Confidence, not ego. You have an ability to collaborate with others and see all sides of the coin to come to the best solution for everyone.
• Flexible and willing to accept change in priorities, as necessary

Preferred Qualifications:

• Proficient with Apache Cordova framework
• Built or maintained custom Cordova plugin
• Demonstrable knowledge of native coding background in iOS
• Understanding of Apple certificate and profile management
• Experience developing and deploying applications within Kubernetes based containers
• Experience in Agile and SCRUM development techniques

Job Title: UI Engineer

Location: Taramani, Chennai

Experience: 2–4 Years

Work Mode: On-site

Job Summary

We are looking for a creative and technically capable UI Engineer to design and develop modern, responsive, and visually polished interfaces for enterprise web applications.

The ideal candidate should combine strong visual design skills with hands-on front-end development experience in Angular. Proficiency in Figma, Angular 16+, TypeScript, HTML, and CSS, along with experience using AI-assisted development tools such as Cursor, Codex, Replit, or Lovable, is required.

Key Responsibilities

• Design and develop clean, intuitive, and responsive interfaces for enterprise web applications.
• Translate product requirements into wireframes, high-fidelity designs, prototypes, and functional UI components.
• Build reusable and maintainable components using Angular and TypeScript.
• Create and maintain design systems, component libraries, and UI standards.
• Implement responsive layouts using HTML and CSS.
• Develop clear and effective interfaces for data-intensive applications.
• Integrate front-end components with REST APIs and backend services.
• Ensure visual consistency between Figma designs and developed interfaces.
• Optimise interfaces for performance, accessibility, and browser compatibility.
• Collaborate with product managers, backend developers, and other stakeholders.
• Use AI-assisted tools to accelerate design, development, testing, debugging, and code refinement.
• Participate in code reviews and application release activities.

Required Skills and Experience

• 2–4 years of experience in UI engineering or front-end development.
• Strong proficiency in Angular, TypeScript, JavaScript, HTML5, and CSS3.
• Strong proficiency in Figma, including auto layout, components, variants, design libraries, and prototyping.
• Strong understanding of visual design, typography, colour, layout, spacing, and responsive design.
• Experience creating reusable, component-based interfaces and maintaining design systems.
• Experience integrating front-end applications with REST APIs.
• Hands-on experience with data visualisation and charting libraries.
• Working knowledge of Git and collaborative development workflows.
• Understanding of accessibility, cross-browser compatibility, and front-end performance optimisation.
• Hands-on experience with at least one AI-assisted development tool such as Cursor, Codex, Replit, Lovable, or a similar platform.
• Ability to translate designs into accurate, production-ready interfaces.
• A strong portfolio or project examples demonstrating both design capability and front-end implementation.

Location: Mumbai

Experience Required: 2+ Years

Job Type: Full-Time

Notice Period: Immediate Joiners

About the Role

We are seeking a skilled and experienced Front-End Developer to join our product engineering team. The ideal candidate must have experience working in a product-based software development company and should have hands-on involvement in e-commerce platform projects.

Mandatory Criteria

• Candidate must be currently working or have prior experience in a product-based software development company
• Candidate must have worked on at least one e-commerce platform project (end-to-end involvement)

Key Responsibilities

• Develop and maintain responsive, high-performance web interfaces using React.js
• Translate UI/UX designs into pixel-perfect, reusable front-end components
• Optimize components for maximum performance and cross-browser compatibility
• Integrate front-end components with backend RESTful APIs
• Collaborate with design, backend, and QA teams to deliver seamless user experiences
• Participate in code reviews, testing, and agile development ceremonies

Required Skills

• Strong proficiency in JavaScript (ES6+), React.js, HTML5, and CSS3
• Experience with state management libraries such as Redux or Zustand
• Solid understanding of responsive design and cross-browser compatibility
• Familiarity with RESTful APIs and API integration
• Knowledge of version control systems like Git
• Understanding of performance optimization, debugging, and front-end testing practices

● Design and develop responsive and visually appealing web applications and user interfaces using HTML, CSS, and JavaScript, React frameworks.

● Collaborate with UX designers, product managers, and software engineers to understand project requirements and translate them into interactive, user-friendly interfaces.

● Ensure the technical feasibility of UI/UX designs and optimise applications for maximum speed and scalability.

● Conduct code reviews and provide constructive feedback to team members, fostering a culture of continuous improvement.

● Stay updated with the latest industry trends, best practices, and emerging technologies in UI development, and recommend their integration to enhance our products.

● Identify and address performance and compatibility issues across different browsers and platforms.

● Champion UI development best practices, standards, and guidelines within the development team.

● Collaborate with backend developers to integrate front-end interfaces with server-side logic and APIs.

● Troubleshoot and debug UI-related issues and provide timely resolutions.

● Mentor junior developers, assisting them in enhancing their skills and knowledge in UI development.

● Write and encourage other engineers to write automated tests.

Skills/ Experience

● Bachelor's degree in Computer Science, Software Engineering, or related field (or equivalent practical experience).

● Proven experience as a UI Developer or Front-End Developer, with at least 3+ years of hands-on experience in building user interfaces for web applications.

● Proficiency in front-end technologies such as TypeScript, Tailwind, React, Redux.

● Strong understanding of responsive design principles.

● Solid knowledge of web performance optimization techniques and best practices.

● Familiarity with Figma and other UI/UX design tools, to collaborate effectively with designers.

● Demonstrated experience in writing UI components to corresponding backend APIs and Databases.

● Excellent problem-solving skills and ability to troubleshoot complex UI-related issues.

● Strong communication and collaboration skills, with the ability to work effectively in a team-oriented environment.

About our Client

Our client is a B2B2C tech firm backed by India’s largest retailer and tech venture capitalist founded by founders - IITB Graduates who are experienced in retail, ecommerce and fintech

It aims to become one app to manage all your brands loyalty points, cashback and coupons. It will have additional content and discovery layer for customers and brands for further engagement and commerce.

The company currently powers closed-loop loyalty programs for all different brands under its parent retail group. Currently, it has 20Mn+ registered customers and 3Mn MAU across 8 brands. Its vision is to be at the center of D2C Brands and the consumer consumption ecosystem

Job Location -Bangalore

Requirement

4+ years ​of experience building frontend for ​consumer facing​ products

2+ years​ experience on   ​React .Jsand core principles

 Good to have experience with popular React.native

​Team Lead/Management ​experience

Develop all user-facing products in React

Thorough understanding of ​architecting​ the frontend system with ​Server Side  Rendering –

Familiarity with modern front-end build pipelines and tools

Understands ​app development cycle

Flexibility and deadline driven

Regards
Team Merito