React.js Developer

Mandatory Skills:

JavaScript, Typescript, SEO, Next.js, Lit.js

Required Skills & Qualifications:

• 8–10 years of frontend development experience with strong proficiency in TypeScript and JavaScript.
• Extensive hands-on experience in Lit.js (Web Components) and Next.js (SSR/SSG).
• Proven leadership in architecting frontend solutions and guiding teams through scalable development.
• Deep understanding of Technical SEO, including schema markup, crawlability, and frontend optimizations for search.
• Expertise in Core Web Vitals, Lighthouse, and performance optimization tools.
• Strong knowledge of responsive design, accessibility standards (WCAG), and cross-browser compatibility.
• Experience integrating frontend with Strapi CMS and RESTful or GraphQL APIs.
• Strong familiarity with Git, Agile methodologies, and CI/CD workflows.
• Excellent communication and collaboration skills, with experience working across disciplines.

Key Responsibilities:

• Architect and lead frontend development using Lit.js, Next.js, and TypeScript, ensuring scalable, modular, and maintainable code.
• Own and evolve the frontend technical stack, enabling performance, SEO, accessibility, and developer efficiency.
• Guide the team in building highly-performant web interfaces with a focus on Core Web Vitals, Lighthouse, and DevTools insights.
• Champion Technical SEO implementation, including structured data, metadata optimization, and SSR/SSG strategies.
• Lead code reviews, pair programming sessions, and enforce code quality standards through tools like SonarQube.
• Mentor and manage 3–5 frontend engineers, fostering technical growth and ensuring delivery quality.
• Collaborate cross-functionally with design, product, backend, SEO, and QA teams to ship robust and accessible user experiences.
• Drive and enforce best practices in unit testing, CI/CD pipelines, and agile workflows.
• Troubleshoot complex UI issues and proactively improve front-end architecture and processes.

Job Description

Frontend/Sr Frontend Developer

About company:-

It is a mission-oriented early-stage fin-tech startup which is building a suite of carefully tailored financial products and delivery mechanisms to fulfill the aspirations and needs of middle-income households in urban India. It was started by three cofounders, who have a pedigreed education background (IIT/IIM) and relevant professional experience in financial services. More importantly, they come from a similar background as the customer segment they are serving, and have done extensive customer research to understands the needs of the customer. It is backed by high-quality investors to realise this mission.

Responsibilities:-

- Develop all user-facing products preferably in React JS & React-Native

- 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.

- Enhance SEO, Analytics and overall frontend architecture for better performance

Requirements:-

- Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model

- Good foundation in design and a knack for designing interactions and elegant interfaces

- Thorough understanding of React.js and its core principles

- Good to have experience with popular React.js workflows (such as Flux or Redux)

- Experience with data structure libraries

- Familiarity with RESTful APIs

- Familiarity with modern front-end build pipelines and tools

- A knack for benchmarking and optimization

- Familiarity with code versioning tools (such as Git)

- Proficient in industry standard best practices such as Design Patterns, Coding Standards,

Coding modularity, Prototypes etc.

- Experience in using debugging tools used for profiling/optimizing performance

- Experience in debugging, tuning and optimizing UI components

• Use markup languages like HTML to create user-friendly web pages
• Maintain and improve website
• Optimize applications for maximum speed
• Design mobile-based features
• Collaborate with back-end developers and web designers to improve usability
• Get feedback from, and build solutions for, users and customers
• Write functional requirement documents and guides
• Help back-end developers with coding and troubleshooting
• Ensure high quality graphic standards and brand consistency
• Stay up-to-date on emerging technologies

• Proven work experience as a Frontend developer
• Hands on experience with markup languages
• Experience with JavaScript, CSS and jQuery and Bootstrap framework
• Familiarity with browser testing and debugging
• In-depth understanding of the entire web development process (design, development and deployment)
• Understanding of layout aesthetics
• Knowledge of SEO principles and AMP is a plus
• An ability to perform well in a fast-paced environment
• Excellent analytical and multitasking skills
• BSc degree in Computer Science or relevant field

• Responsible for development of new highly responsive, web-based user interface
• Construct visualizations that can depict vast amounts of data
• Work and collaborate with the rest of the engineering team
• Work with product team and graphic designers
• Learn and understand user interactions
• Develop a flexible and well-structured front-end architecture, along with the APIs to support it

Requirements and qualifications

• B.S Degree in Computer Science
• Experience with JavaScript
• Experience with REACT
• Experience with HTML / CSS
• Experience with REST API's
• Git knowledge is a plus
• Team player
• Good time-management skills
• Great interpersonal and communication skills

About Yellow Riddle:

Yellow Riddle is a young, fast-growing, bootstrapped and fun startup with a partly remote team. The founders have both been an active part of the Shopify ecosystem for over two years now consulting over 100+ DTC brands across the globe. We solve complex solutions for our merchants and build best-in-class Shopify websites. Most of our clients are based in the UK, Germany, USA & India.

Check out our website, especially our case studies:

www.yellowriddle.com

About the Role: 

Yellow Riddle is looking for an experienced Front-end Shopify Developer to join our growing team with our increasing volume of Shopify work. Work would be spread across theme customisations, development and more complex migration projects from other CMS platforms to Shopify. One could also expect to be involved in maintenance and iterative site improvements. The key objective of the role is to be able to work on complex project requirements and be able to work across multiple projects.

You'll be a great fit!... if:

• You have strong knowledge in templating languages, and additionally Shopify Templates(Liquid), debugging and front-end skills.
• You know how to set up custom layout/content editors for our clients in Shopify.
• You have hands-on experience with Shopify, including at least two or more large-scale projects.
• You write clean theme code and can add and debug JS.
• You excel working in a remote environment, meaning you’re autonomous, self-driven, responsive, transparent, and self-organised.

Critical Requirements (Must-Haves):

• Minimum 3 years of work experience.
• Excellent verbal and written communication skills in English.
• Ability to demonstrate strong analytical skills & problem solving mindset
• Strong knowledge of HTML, CSS.
• Knowledge of JavaScript and jQuery
• Ability to develop responsive designs from PSDs, Invision or Adobe XD
• Shopify knowledge & ability to work on theme-kit

Preferred Requirements (Nice to Haves):

• Experience of working on Shopify Plus projects

Candidate Attribute (Culture Fit):

• Willingness to learn.

Senior Frontend Developer || CSS, HTML, JavaScript, React.js|| 3+ years exp 

Hiring For

Front-End Engineer - I / II / III

Radical is a platform connecting data, medicine and people -- through machine learning, and usable, performant products. Software has never been the strong suit of the medical industry -- and we are changing that. We believe that the same sophistication and performance that powers our daily needs through millions of consumer applications -- be it your grocery, your food delivery or your movie tickets -- when applied to healthcare, has a massive potential to transform the industry, and positively impact lives of patients and doctors. Radical works with some of the largest hospitals and public health programmes in India, and has a growing footprint both inside the country and abroad. 

As a Full Stack Engineer at Radical, you will:

• Work closely with all stakeholders in the healthcare ecosystem - patients, doctors, paramedics and administrators - to conceptualise and bring to life the ideal set of products that add value to their time
• Write code on the front-end, the back-end and anything it takes to solve the problems and delight users both internally and externally
• Build systems which have an extraordinary emphasis on capturing data that can help build better workflows, algorithms and tools
• Work on high performance systems that deal with several million transactions, multi-modal data and large datasets, with a close attention to detail

We’re looking for someone who has:

• Familiarity and experience with writing working, well-documented and well-tested code in at least two of the following: React/Redux (preferred), NodeJS (preferred), Golang and Python
• Proficiency in the features of the language they are using, with knowledge of standards and best practices (Eg: ES2015 and above, Python 3.5 and above, React Hooks/HOC/Redux)
• Knowledge of databases, and familiarity with REST API patterns
• Experience integrating with a wide variety of external tools and services
• Experience navigating AWS and leveraging appropriate services and technologies rather than DIY solutions (such as hosting an application directly on EC2 vs containerisation, or an Elastic Beanstalk)

It’s not essential, but great if you have:

• An established track record of building systems from scratch
• Experience with microservices and decomposition of monolithic architectures
• Proficiency in automated tests
• Proficiency with the linux ecosystem
• Experience in deploying systems to production on cloud platforms such as AWS
• Experience in TypeScript
• Meaningful open source contributions 

The position is open now, and we are onboarding immediately. 

Please write to us with an updated resume, and one thing you would like us to see as part of your application. This one thing can be anything that you think makes you stand apart among candidates: it can be an interesting hobby project that you’ve self-hosted, a research paper that’s been published, a collection of blog posts you’ve written, a repository you maintain, or your contributions to a major library. 

Radical is based out of Delhi NCR, India, and we look forward to working with you!

We're looking for people who may not know all the answers, but are obsessive about finding them, and take pride in the code that they write. We are more interested in the ability to learn fast, think rigorously and for people who aren’t afraid to challenge assumptions, and take large bets -- only to work hard and prove themselves correct. You're encouraged to apply even if your experience doesn't precisely match the job description. Join us.