
About the Role
We are looking for a Front-End JavaScript Developer who has a strong grasp of core JavaScript and fundamental computer science principles. This role is ideal for someone who enjoys solving complex problems, can quickly adapt to new technologies, and is comfortable reading and implementing solutions from technical documentation.
As part of our team, you will develop high-quality, efficient, and scalable front-end solutions while working closely with designers and back-end engineers. A deep understanding of JavaScript (not just frameworks) is key for this role.
Responsibilities
- Develop and maintain front-end applications using vanilla JavaScript and modern ES6+ features.
- Work with HTML, CSS, and JavaScript to build interactive, responsive, and high-performance user interfaces.
- Read and interpret technical documentation to integrate APIs, optimize performance, and implement new functionalities.
- Debug and troubleshoot front-end issues efficiently.
- Collaborate with back-end developers and designers to ensure seamless integration of UI/UX.
- Write clean, maintainable, and well-documented code following best practices.
- Stay up-to-date with advancements in web development and emerging technologies
Requirements
- Strong understanding of JavaScript (ES6+), closures, event loops, async/await, fetch api and functional programming concepts.
- Solid grasp of computer science fundamentals, including data structures, algorithms, and object-oriented programming (OOP).
- Experience with HTML5, CSS3, and modern styling techniques (e.g., Flexbox, Grid, SASS, Tailwind).
- Ability to read and implement features based on technical documentation and specifications.
- Proficiency in working with RESTful APIs and handling JSON data.
- Familiarity with DOM manipulation, performance optimization, and browser debugging tools.
- Experience with Git/GitHub and version control workflows.
- Strong problem-solving skills and ability to learn quickly in a fast-paced environment.
Nice to Have (Bonus Skills)
- Experience with WebAssembly (WASM), WebSockets, or Service Workers.
- Familiarity with TypeScript.
- Understanding of compilers, interpreters, and low-level programming concepts.
- Experience with build tools like Webpack, Rollup, or Vite.
- Knowledge of testing frameworks like Jest or Mocha.
- Exposure to performance profiling and memory management in JavaScript.
Why Join Us?
- Work on challenging and impactful projects that require deep problem-solving.
- Opportunity to learn and grow in a fast-paced, tech-driven environment.
- A team that values engineering excellence, core computer science, and continuous learning.
- Competitive salary, benefits, and a culture that fosters innovation.
If you re passionate about JavaScript and love solving technical challenges, we’d love to hear from you!

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Skills and Qualifications
Proficient understanding of markup language like HTML to create user friendly web pages
Strong experience in React JS
Proficient understanding of JavaScript, CSS and jQuery
Good experience of React native, algorithm and data structure
Good understanding of asynchronous request handling, partial page updates, and AJAX
Proficient understanding of cross-browser compatibility issues and ways to work around them.

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
The Company is looking for a Front End Developer to join our growing team in our
Costa Rica office. Your experience here will give you the opportunity to improve the
fundamentals and learn about the top-notch technologies in front end development. If you are
someone who is passionate about building stellar user experiences and great products through elegant code this would be the job for you. You will play a key role in translating our customers and company needs into appealing and functional web pages while proving your ideas with testing. We all work closely together across teams so there's no red tape or
bureaucracy. We get things done!
What You Will Get to Do
● Work with your team to improve our conversion rates by coding out variations for A/B testing
● Build better user experiences
● Rigorously educate yourself with the latest development techniques and best practices
● Proactively anticipate issues and develop solutions
● Clearly communicate solutions to team members both verbally and in writing documentation
● Implement new digital technologies or development techniques that help to meet business
objectives
What You Bring to the Table
● 3+ years of front-end development experience
● Experience with responsive web design and the ability to deliver outstanding functionality
to the range of client devices from desktops and laptops to mobile platforms
● Familiarity with at least one JavaScript framework (MVW) and know when to do without
one when necessary.
● Understanding of HTTP and how clients interact with a web server.
● Solid understanding of best practices. You read the YDKJS books.
● Capable of coding in ES5 and ES6 and understand the difference between them
● Up-to-date on HTML5 and CSS3 features.

About
Our client is a platform of digital first health clinics owned and operated under one house, with each of them working together toward one mission: To help Indians lead a more fulfilling life surrounded by wellness and grace.
The business is creating a family of purposeful health platforms with personalized solutions for a particular problem in a niche segment. Each platform provides the essentials to enable an individual segment of people to lead a graceful life full of purpose and well being.
Role
As the lead for the frontend development team, you will be the sole owner of the entire FE development cycle for our consumer-facing web products in ReactJS. Also, you will be responsible for shaping up the entire system for scale and collaborating intensively with the backend and design teams to create the best consumer experiences. You would also need to control the mobile app development lifecycle on ReactNative.
Responsibilities
-
- Overlook development of all user-facing products in React
-
- Build reusable components and front-end libraries for future use
-
- Translate designs and wireframes into high-quality code
-
- Optimize components for maximum performance across a vast array of web-capable
devices and browsers
-
- Focus on code maintainability and performance of application
-
- Provide technical advice and assists in solving programming problems
-
- Use Server Side Rendering when applicable
-
- Enhance SEO, Analytics and overall frontend architecture for better performance
Requirements
-
- 4+ years o f experience building frontend for consumer facing products
-
- 2+ years on ReactJS for consumer facing products
-
- 1+ years o f Team Lead/Management experience
-
- Thorough understanding of architecting the frontend system with Server Side Rendering
-
- Good foundation in design and a knack for designing interactions and elegant interfaces
-
- Understands app development cycle
-
- Experience with NodeJS for Server Side Rendering/coordinating with the backend team for API requirements
-
- Must come up with caching solutions where required to speed up the website load speed and improve customer experience

Hands-on experience in React.js and Good understanding of core concepts
Hands-on experience in state management libraries like Redux.
Hands-on experience in HTML5 & CSS3 and JavaScript.
Experience integrating with Restful web services
Proficient with ES6/7/8 syntax and concepts
Proficient knowledge of cross-browser compatibility issues
Knowledge of modern authorization mechanisms, such as JSON Web Token
Experience with common front-end development tools such as Babel, Web pack, NPM.

- Make good engaging user interface
- Integrate apis and make it functional
- Writing tested and documented JS, HTML and CSS
- Perform product analysis and development tasks of increasingly complex nature which may require extensive research and analysis.
- Make design and technical decisions for REACT-JS projects.
- Ensuring high performance

● Design overall architecture of the web application.
● Maintain quality and ensure responsiveness of applications.
● Collaborate with the rest of the engineering team to design and launch new features.
● Maintain code integrity and organization.
● Experience working with graphic designers and converting designs to visual elements.
● Understanding and implementation of security and data protection.
● Highly experienced with front-end programming languages - HTML, CSS JavaScript, etc
● Proficient experience using - advanced JavaScript libraries and frameworks
Development experience for both mobile and desktop.
● Knowledge of code versioning tools such as Git
Requirement -
● Proven work experience as a Front-end developer
● Hands on experience with markup languages
● Experience with JavaScript, CSS and HTML
● Wordpress would be an added advantage.
● Prefer from Tier One college like ( IIIT, NIT, IIT, NSUT, DTU..etc )
● Familiarity with browser testing and debugging
● In-depth understanding of the entire web development process (design, development
and deployment)
● Understanding of layout aesthetics
● An ability to perform well in a fast-paced environment
● Excellent analytical and multitasking skills
● B. Tech. in computer science Preferred.


1. At least 1+ years of product development experience with expertise in designing and implementing high-performance web applications
2. Must be proficient with JavaScript
3. Must be good in React/Redux/Middleware (Thunk, Saga)/Typescript and advance concepts
4. Should be good in Data structure and algorithms
5. Should be good in basic programming concepts
6. Should have code optimization skills and should be able to integrate REST APIs
7. should have experience in building reusable components and front-end libraries for future use
8. should have experience in translating designs and wireframes into high-quality code
9. Knowledge of Angular and Node.js is a plus
10. Should be willing to work in startup
11. Should have experience of building responsive websites





