React.js Developer

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.]

Responsibilities

Ability to work on a cross-functional team within a very agile team, delivering on time and with high quality

Adjusts and defines new processes as they arise due to known and unknown customer/engineering requirements as it relates to frontend web development

Provides feedback on frontend architecture, code organization and CI/CD infrastructure for the team

Staying up to date with the best practices and future frontend development

Provides frontend leadership expertise and mentoring to other developers on not only the team, but the engineering organization as a whole

Takes pride in delivering ground breaking UI to web applications

Working closely with UX designers to turn their ideas into reality as it relates to creating visualizations for next generation cybersecurity

Qualifications

Proficient in developing large REACT Web Applications

Experience with Django applications

Proficient with TypeScript

Experience with Postgres or other relational database(s)

Experience developing REST APIs with authentication and scaling

Familiarity with some ORM (Object Relational Mapper) libraries

Cloud computing architectures (AWS, Azure, Google Cloud)

Experience with Docker a plus

Job Description

As a React Native Developer at Marmeto, you will play a critical role in building high-performance, cross-platform mobile applications for iOS and Android. You will collaborate with UX/UI designers, backend engineers, and product stakeholders to deliver intuitive and scalable mobile experiences. This role demands a developer with a deep understanding of mobile architecture, native modules, and modern development best practices.

Skills:

• Minimum 4 years of hands-on experience with React Native for Android and iOS development.
• Strong proficiency in JavaScript, TypeScript, and ES6+ features.
• Solid understanding of React Native architecture, including Hooks, Redux/MobX, and Context API.
• Experience with native module integration (Android/iOS) and third-party libraries.
• Proficient in using React Navigation, AsyncStorage, and mobile design patterns.
• Familiarity with debugging tools like Flipper, Chrome DevTools, and React Native Debugger.
• Experience in publishing apps to the App Store and Google Play.
• Good understanding of mobile performance optimization and memory management.
• Proficiency with version control systems like Git.

Roles & Responsibilities:

• Design, develop, and maintain cross-platform mobile applications using React Native.
• Collaborate with UI/UX designers to implement pixel-perfect interfaces and interactions.
• Work closely with backend teams to integrate APIs (REST/GraphQL) seamlessly.
• Write clean, modular, and scalable code following best practices and design patterns.
• Troubleshoot, debug, and optimize mobile apps for maximum performance.
• Stay updated on emerging trends in mobile development and bring innovation into the team.

Requirements

Mandatory

• Should have built solutions/applications end-to-end, not just contributed as part of a larger team.
• Should envision continuing in a deep mobile development role 5+ years down the line.
• Strong command over JavaScript, TypeScript, and React Native internals.
• Experience working with Redux, React Hooks, and lifecycle methods in mobile contexts.
• Deep understanding of platform-specific limitations, capabilities, and mobile UI/UX standards.

Essential

• Proficiency with Git and collaborative workflows (e.g., branching, PRs).
• Familiarity with CI/CD for mobile.
• Understanding of offline storage, background sync, and performance monitoring.

Good to Have

• Knowledge of native development (Swift/Kotlin) to bridge native modules when needed.
• Exposure to tools like Figma, Sketch, or Zeplin for design collaboration.
• Experience with e-commerce platforms like Shopify, BigCommerce, or similar.

Hiring - React JS Developer Freelance Consultant (WFH-Remote)

Greetings from Deltacubes Technology!!

Skillset Required:

React JS

Experience:

5+ years

Thanks

Bavithra

Talent Acquisition Specialist

• 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

• 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)

• 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

• 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 and knowledge of advanced JavaScript libraries and frameworks, such as AngularJS, KnockoutJS, BackboneJS, ReactJS, DurandalJS etc.
• 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
• Proficient understanding of cross-browser compatibility issues and ways to work around them.
• Proficient understanding of code versioning tools, such as Git
• Good understanding of SEO principles and ensuring that application will adhere to them

JOB PROFILE : SHOPIFY DEVELOPER

• Education: Bachelor's Degree in IT, Computer Science, Computer Programming, or a similar field
• 2+ years of experience developing within the Shopify and Shopify Plus platforms
• 2+ years of experience in front-end technologies including, but not limited to, JavaScript, AJAX, HTML, CSS, SASS, XML
• Troubleshooting & debugging skills
• Interest in staying current and applying the most current best practices
• Able to work effectively in a fluid, fast-paced environment
• Has a true passion for design and technology
• A disciplined approach to testing and quality assurance
• Positive attitude, high energy, and love for broadening web development skill set

RESPONSIBILITIES

WHAT YOU'LL DO:

• Collaborating with the UX and UI design teams to produce seamless, robust, and innovative front-end user experiences
• Generating custom-tailored Shopify themes, and altering pre-existing templates
• Working closely with project managers to deploy project requirements
• Managing multiple projects simultaneously, and be able to address their specific needs and requirements at a moment's notice
• Understanding business needs that drive project features & functions and provide internal consultation

Must Have

Degree in Computer Science or related field.
3 - 4 years’ experience in Angular or React.
Expertise in responsive and adaptive front end design and development. Proficiency in HTML, CSS, JavaScript, and jQuery.
Experience is RESTful web services.
Understanding of key design principles.
Experience in version control using Git, CI-CD principles.
Good problem-solving skills.
Excellent verbal communication skills.
Good interpersonal skills.

Nice to have

Experience with graphic design applications such as Adobe Illustrator. Understanding of SEO principles.
Knowledge of Cloud technologies like AWS or Azure.