Frontend developer - ReactJS

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.

Company Overview

VC-backed Fintech startup with an innovative online trading application seeking an experienced Frontend Engineer to join our growing team.

We're based out of UK and have our engineering team in India.

Job Description

We are looking for a great JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.

Responsibilities

1. Developing new user-facing features using React.js
2. Building reusable components and front-end libraries for future use
3. Translating designs and wireframes into high quality code
4. Optimizing components for maximum performance across a vast array of web-capable devices and browsers
5. Maintain existing React systems, including fixing bugs
6. Handling backend infra written in Next/Node/Express

Skills

1. Strong proficiency in debugging, JavaScript, including DOM manipulation and the JavaScript object model
2. Thorough understanding of React.js and its core principles
3. Experience with popular React.js workflows (such as Flux or Redux)
4. Familiarity with newer specifications of EcmaScript
5. Experience with data structure libraries (e.g., Immutable.js)
6. Knowledge of isomorphic React is a plus
7. Knowledge of isomorphic Next js and Node js is a plus
8. Familiarity with RESTful APIs
9. Knowledge of modern authorization mechanisms, such as JSON Web Token
10. Familiarity with modern front-end build pipelines and tools
11. Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
12. Familiarity with basic authentication mechanism and security
13. Ability to understand business requirements and translate them into technical requirements
14. A knack for benchmarking and optimization
15. Familiarity with code versioning tools such as Git

[Please note: Our HQ is in Wales and we're in the process of creating an Indian Entity. This means that the candidate will be responsible for all Tax related compliances until the entity is setup.]

ReactJs Developer

Key aspects of this role:

• Meeting with the development team to discuss user interface ideas and applications.

• Reviewing application requirements and interface designs.

• Identifying web-based user interactions.

• Developing and implementing highly-responsive user interface components using React concepts.

• Writing application interface codes using JavaScript following React.js workflows.

• Troubleshooting interface software and debugging application codes.

• Developing and implementing front-end architecture to support user interface concepts.

• Monitoring and improving front-end performance.

• Documenting application changes and developing updates.

To be the right fit, you'll need:

• Minimum 4+ years relevant experience in application development and React JS.

• Knowledge of React hooks such that use Context, use Reducer, use Effect.

• Knowledge of React props and state management (both functional and class component)

• Strong understanding of Error boundary concept of react.

• Work experience with any react based UI library or Redux is preferable

• Experience in building cross-browser layouts with CSS and HTML

What are we looking for:

1. We are looking for someone that has an eye for design, solid experience in ReactJS, are value-driven and product-oriented. You will own all phases of user interface development.
2. From architecture and design to implementation and customer engagement. This role isn’t just about coding; it's about owning features end-to-end, translating them from concepts to user-centric products
3. Each engineer owns the feature they are building and is responsible for turning it into reality, and we will need your front-end expertise to find solutions to problems and challenges and deliver on roadmap objectives.
4. 4+ years of experience in web frontend technology, including React, TypeScript, and CSS-in-JS.
5. Significant experience with JavaScript frameworks and client-side state management, particularly React.js and Redux.
6. Knowledge of 2D visualization libraries like D3 and 3D visualization tools such as Three.js and WebGL is a plus.
7. Expertise in developing solutions for complex problems and integrations, with a strong product sense to balance technical and product requirements.
8. Skilled in working collaboratively with cross-functional teams, including design, product, tech, learning experience & marketing.
9. Independent and capable of producing 'production ready' code with minimal guidance.
10. Proficient in performance optimization and CDN caching strategies.
11. Nice to have: Full stack experience working in backend.

We are looking for a good JavaScript developer who is proficient with React.js. Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux). You will ensure that these components and the overall application are robust and easy to maintain. You will coordinate with the rest of the team working on different layers of the infrastructure. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.

Responsibilities

• Developing new user-facing features using React.js
• Building reusable components and front-end libraries for future use
• Translating designs and wireframes into high-quality code
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers

Skills:

• Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js and its core principles
• Experience with popular React.js workflows (Redux)
• Familiarity with newer specifications of ECMAScript
• Experience with data structure libraries (e.g., Immutable.js)
• Knowledge of isomorphic React is a plus
• Familiarity with RESTful APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Familiarity with modern front-end build pipelines and tools
• Ability to understand business requirements and translate them into technical requirements
• A knack for benchmarking and optimization
• Familiarity with code versioning tools (such as Git, SVN, and Mercurial)

• Minimum 3 years experience in React redux and Flux
• 3 years experience in Frontend skills
• Familiarity with database technology such as MySQL,  MongoDB. ·
• Good communication.