React.js Developer

🚀 Hiring: React.js

⭐ Experience: 2+ Years

📍 Location: Mumbai

⭐ Work Mode:- 5 Days Work From Office

⏱️ Notice Period: Immediate Joiners or 15 Days

(Only immediate joiners & candidates serving notice period)

We’re looking for a skilled React.js Developer to join our growing team! If you love building dynamic, user-friendly web applications and have strong expertise in React.js, JavaScript (ES6+), and modern front-end tools, this role is for you.

✅ Key Skills:

• Proficiency in React.js, JavaScript (ES6+), HTML5, CSS3
• Experience with Redux / Context API
• Strong knowledge of REST APIs & JSON
• Familiarity with Git & Agile development
• Bonus: TypeScript, Next.js, Testing (Jest/Enzyme), UI frameworks (Material-UI/Tailwind)

* Bachelor's degree in computer science or related fields preferred.

* 8+ years of experience developing core Java applications across enterprise, SME, or start-up

environments.

* Proven experience with distributed systems and event-driven architectures.

* Expertise in Spring Boot, Spring Framework, and RESTful API development.

* Experience in designing, building, and monitoring microservices.

* Solid background in persistence technologies including JPA, Hibernate, MS-SQL, and

PostgreSQL.

* Proficient in Java 11+, including features like Streams, Lambdas, and Functional

Programming.

* Experience with CI/CD pipelines using tools such as Jenkins, GitLab CI, GitHub Actions, or

AWS DevOps.

* Familiarity with major cloud platforms: AWS, Azure, or GCP (AWS preferred).

* Front-end development experience using React or Angular with good understanding of

leveraging best practices around HTML, CSS3/Tailwind, Responsive designs.

* Comfortable in Agile environments with iterative development and regular demos.

* Experience with container orchestration using Managed Kubernetes (EKS, AKS, or GKE).

* Working knowledge of Domain-Driven Design (DDD) and Backend-for-Frontend (BFF) concepts.

* Hands-on experience integrating applications with cloud services.

* Familiarity with event-driven technologies (e.g., Kafka, MQ, Event Buses).

* Hospitality services domain experience is a plus.

* Strong problem-solving skills, with the ability to work independently and in a team.

* Proficiency in Agile methodologies and software development best practices.

* • Skilled in code and query optimization.

* Experience with version control systems, particularly git

Job Description:

We are seeking a skilled Shopify App Developer with experience in React/Remix and a strong foundation in HTML, CSS, JavaScript, and jQuery. The ideal candidate will be responsible for building and maintaining custom Shopify applications, enhancing user interfaces, and ensuring seamless e-commerce experiences for our clients. This role requires a strong understanding of Shopify’s ecosystem, combined with frontend development skills to deliver high-quality, scalable solutions.

Key Responsibilities:

• React Develop, test, and maintain custom Shopify apps to enhance store functionality.
• Collaborate with the design and product teams to implement responsive and user-friendly UI/UX features.
• Utilize React and Remix frameworks to build dynamic, interactive web applications.
• Write clean, modular, and scalable code using HTML, CSS, JavaScript, and jQuery.
• Integrate third-party APIs and manage data securely within Shopify.
• Optimize applications for speed and scalability across various devices and browsers.
• Stay updated on Shopify platform updates, best practices, and industry trends.
• Develop, test, and maintain custom Shopify apps to enhance store functionality.
• Collaborate with the design and product teams to implement responsive and user-friendly UI/UX features.
• Utilize React and Remix frameworks to build dynamic, interactive web applications.
• Write clean, modular, and scalable code using HTML, CSS, JavaScript, and jQuery.
• Integrate third-party APIs and manage data securely within Shopify.
• Optimize applications for speed and scalability across various devices and browsers.
• Stay updated on Shopify platform updates, best practices, and industry trends.

About Optiblack LLC

Optiblack LLC is a company that specializes in providing tech and analytics services. We offer a range of solutions to help businesses meet their goals, including:

• Data Analytics: we can help you extract insights from your data to make informed decisions.
• Web Development: we can design and build custom websites for your business.
• Mobile App Development: we can create mobile apps for both iOS and Android platforms.
• AI and Machine Learning: we can leverage these technologies to automate tasks and improve efficiency.

Optiblack LLC has a team of experienced professionals who can help you with your project. They have a track record of success in delivering high-quality solutions to our clients.

About the Role

We are looking for a passionate and talented intern developer to join our growing team at Optiblack LLC. This is a fantastic opportunity to gain hands-on experience building and maintaining our React Native mobile application. You will work alongside experienced developers and contribute to a product used by millions of users.

Responsibilities:

• Develop new features and functionalities for our React Native mobile application.
• Collaborate with designers and backend developers to ensure a seamless user experience.
• Write clean, maintainable, and well-documented code.
• Fix bugs and identify areas for improvement in the existing codebase.
• Stay up-to-date with the latest trends and technologies in React Native development.
• Participate in code reviews and provide constructive feedback.

Qualifications:

• Strong understanding of React Native development concepts.
• Experience with JavaScript (ES6+) and related frameworks.
• Familiarity with React development principles is a plus.
• Experience with Git version control system.
• Excellent problem-solving and debugging skills.
• Ability to work independently and as part of a team.
• Strong communication and interpersonal skills.
• A passion for learning and staying updated with the latest technologies.

Bonus Points:

• Experience with building cross-platform mobile applications.
• Experience with UI/UX design principles.
• Experience with unit testing frameworks like Jest or Mocha.
• Experience working on Social Media Apps or having an interest in working on them.

** Internship Duration:** 3 Months

Location: Remote

To Apply:

Please submit your resume and a cover letter explaining your interest in the position and why you think you would be a good fit for our team

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.

• 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
• Experience of theme design on the WordPress CMS is mandatory.

• 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

Note: Every front-end developer is expected to have a proficient knowledge of JavaScript, while most front-end developers should know jQuery.

• Good understanding of (Depending on the specific case, a developer should have the 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. Familiarity with tools such as as Gimp or Photoshop is a plus.

Note: A UI/UX designer is expected to deliver finished resources for the developer to incorporate into the app. However, quite often a front-end web developer needs to make some small adjustments.

• Proficient understanding of cross-browser compatibility issues and ways to work around them.
• Proficient understanding of code versioning tools, such as (Git / Mercurial / SVN)
• Good understanding of SEO principles and ensuring that application will adhere to them.

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.

About our Client

Our client is a B2B2C tech firm backed by India’s largest retailer and tech venture capitalist founded by founders - IITB Graduates who are experienced in retail, ecommerce and fintech

It aims to become one app to manage all your brands loyalty points, cashback and coupons. It will have additional content and discovery layer for customers and brands for further engagement and commerce.

The company currently powers closed-loop loyalty programs for all different brands under its parent retail group. Currently, it has 20Mn+ registered customers and 3Mn MAU across 8 brands. Its vision is to be at the center of D2C Brands and the consumer consumption ecosystem

Job Location -Bangalore

Requirement

4+ years ​of experience building frontend for ​consumer facing​ products

2+ years​ experience on   ​React .Jsand core principles

 Good to have experience with popular React.native

​Team Lead/Management ​experience

Develop all user-facing products in React

Thorough understanding of ​architecting​ the frontend system with ​Server Side  Rendering –

Familiarity with modern front-end build pipelines and tools

Understands ​app development cycle

Flexibility and deadline driven

Regards
Team Merito

• Overall 3+  years of software development experience in building web-based and highly scalable applications. 

• Excellent understanding of core computer science concepts like algorithms, data structure, system design, OOP, etc. 

• Deep knowledge and development expertise in React Native/ReactJS 

• Hands-on coding experience in developing multi platform (iOS & Android) mobile applications with REST APIs.

• Experience working as a Full stack developer is a big plus.

• Experience in building single page applications or Javascript heavy front end applications in ReactJS is a big plus.

• Experience working in cloud environments with CI/CD and infrastructure automation is a big plus.

• Experience working in an agile team with software engineering practices like automated testing, test-driven-development, continuous integration, etc is a big plus. 

• Strong oral and written communication.

• Strong proficiency in JavaScript, object model, DOM manipulation and event handlers, data structures, algorithms, JSX, and Babel
• Complete understanding of ReactJS and its main fundamentals like JSX, Virtual DOM, component lifecycle, etc.
• Preceding experience with ReactJS workflows like Flux, Redux, Create React App, data structure libraries
• Understanding of RESTful APIs/GraphQL, HTML/CSS, ES6 (variables and scoping, array methods), code versioning tools like GIT, SVN, etc., popular frontend development tools, CI/CD tools, DevOps, performance testing frameworks like Mocha, Node + NPM
• Preferred degree in Computer Science, Information Technology or similar