Frontend Engineer

What You’ll Do:

• Build and ship responsive, high-performance web applications using React.
• Translate UI/UX designs into clean, maintainable code.
• Integrate frontend with backend services via REST/GraphQL APIs.
• Optimize applications for speed, scalability, and cross-browser compatibility.
• Write reusable, modular components and maintain design consistency.
• Collaborate with product managers, designers, and engineers to deliver features end-to-end.
• Identify performance bottlenecks and improve frontend architecture.
• Participate in code reviews and contribute to best practices.

What We’re Looking For:

• 4–6 years of experience in frontend development.
• Strong hands-on experience with React.js.
• Solid understanding of JavaScript (ES6+), HTML5, and CSS3.
• Familiarity with state management (Redux / Zustand / Context API).
• Experience working with REST APIs and asynchronous programming.
• Understanding of responsive design and cross-browser compatibility.
• Experience with build tools (Webpack, Vite, etc.).
• Familiarity with Git-based workflows.
• Good problem-solving and communication skills.

Good to Have:

• Experience with testing frameworks (Jest, React Testing Library).
• Exposure to performance optimization techniques.
• Basic understanding of backend technologies (Node.js / Python).

What You’ll Work On:

• Building intuitive and scalable user interfaces for our core product.
• Improving performance and user experience across the platform.
• Contributing to frontend architecture and design systems.
• Solving real-world problems at scale.

Why Join Us

• Work on impactful products used by real customers.
• Opportunity to own features end-to-end.
• Collaborative and fast-paced environment.

Role:

Senior Frontend Developer

Role Description:

Desired Experience Range 5+ years

Location: Mumbai / Work from Home

Work Experience:

Minimum 5+ years of professional experience in HTML, CSS, AngularJS

Requirements:

1. Must have hands on experience in AngularJS, NodeJS
2. Must have hands on experience in HTML 5, CSS 3
3. Must have hands on experience in developing responsive layouts
4. Must know how to test frontend layouts for various devices and resolutions
5. Must have hands on experience working with SCSS
6. Must have worked with Git
7. Understanding of SDLC process
8. Good to have knowledge of Jira

Key Responsibilites:

1. Converting layouts to HTML/CSS
2. Integrating the created HTML/CSS into the dynamic Slate platform
3. Consuming APIs in AngularJS
4. Setting up oAuth token exchange in AngularJS
5. Looking into any bug fixes post go live
6. Helping the junior developers

Reporting

Candidate will report to the Engineering Lead

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.

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 Description :

We are looking for a Front-End Web Developer who is motivated to combine the art of design with the art of programming. Responsibilities will include translation of the UI/UX design wireframes to actual code that will produce visual elements of the application. You will work with the UI/UX designer and bridge the gap between graphical design and technical implementation, taking an active role on both sides and defining how the application looks as well as how it works.

Responsibilities :

- Develop new user-facing features

- Build reusable code and libraries for future use

- Ensure the technical feasibility of UI/UX designs

- Optimize application for maximum speed and scalability

- Assure that all user input is validated before submitting to back-end

- Collaborate with other team members and stakeholders

Skills :

* Proficient understanding of web markup, including HTML5, CSS3.

* Basic understanding of server-side CSS pre-processing platforms, such as LESS and SASS.

* Proficient understanding of client-side scripting and JavaScript frameworks, including jQuery.

* Good understanding of asynchronous request handling, partial page updates, and AJAX.

* Basic knowledge of image authoring tools, to be able to crop, resize, or perform small adjustments on an image.

* Familiarity with tools such as Gimp or Photoshop is a plus.

* Proficient understanding of cross-browser compatibility issues and ways to work around them.

* Proficient understanding of code versioning tools, such as Git / Bitbucket.

* Good understanding of SEO principles and ensuring that application will adhere to them.

• Web :  Angular2+ (min 3 years), HTML5, NodeJS, Yarn
• Programming: Typescript
• IDE Tools : Visual Studio Code,
• Source Control – Good knowledge on SVN/Git
• Good to have: Java8, SpringBoot, JPA, Oracle PL SQL, SOAP, Restful, WSDL, ETL tools like Talend
  
  Role Summary:
• Software Development with best coding practices
• Proper co-ordination with other team members for maintaining source code versioning
• Complete and provide status of work to Team Lead/Project Manager regularly
• Create and maintain proper documents related to development work
• Collaborate with other team to create quicker issue resolution to achieve high customer satisfaction
• Flexible to learn other technologies and work across teams
• Clear understanding of requirement from functional team
• Involvement in analysis, design, coding, SIT, UAT and support