Frontend Developer

Job description - React Developer Responsibilities: - Develop high quality Javascript (ES6) code for our React applications. - Coordinate with backend engineers to establish JSON-based APIs. - Optimize application for maximum speed and compatibility. - Integrating third-party dependencies and debugging dependency conflicts - Multitask seamlessly, always maintaining a positive attitude and a client-first mentality - Incorporate engineering best practices, methodologies & standards in all deliverables - Pay close attention to details and be able to follow specifications and mockups (pixel perfect). - Making recommendations to address UI/UX issues. Requirement: - Must have good understanding in web application development - Strong experience in React, JavaScript, ES6, CSS3. - Good experience with React or React Native and Redux. - Experience building complex features and interfaces for React applications. - Familiarity with RESTful APIs. - Experience with version control tools (Git), NPM- - Deep understanding of data structures, data flow, Ajax and CRUD. - Solid knowledge of web app development practices. - Excellent spoken and written English. Experience : 2+years of experience Requirement : Immediate Joinee to 30 days

**TL;DR:** Seeking an experienced Front-end Developer proficient in React and Next.js to build user-friendly interfaces for Proof of Skill, a blockchain-based protocol for skill verification and credentialing.

Proof of Skill protocol is a decentralized system where industry experts (Validators) evaluate candidates' skills and issue verifiable Skill Credentials. Organizations can then shortlist candidates based on these credentials.

**Qualifications and Skills:**

5+ years of experience in front-end development, with a strong focus on React and Next.js

Proficiency in JavaScript, HTML5, CSS3, and related front-end technologies

Solid understanding of React ecosystem, including Redux, React Router, and React Hooks

Experience with Next.js and its server-side rendering (SSR) and static site generation (SSG) capabilities

Familiarity with modern front-end build tools and workflows (e.g., Webpack, Babel, ESLint)

Knowledge of responsive design and cross-browser compatibility

Experience with RESTful APIs and integration with back-end services

Familiarity with web accessibility standards (WCAG) and best practices

Understanding of blockchain technology and decentralized applications (dApps) is a plus

**Responsibilities:**

Design and develop user-friendly interfaces for the Proof of Skill platform using React and Next.js

Implement reusable and modular front-end components following best practices

Integrate with blockchain-based back-end services and decentralized data sources

Optimize performance, scalability, and security of the front-end applications

Collaborate with the design team to ensure pixel-perfect implementation of UI/UX designs

Write clean, maintainable, and well-documented code

Participate in code reviews and ensure adherence to coding standards

Stay up-to-date with the latest front-end technologies, frameworks, and industry trends

**Ideal Candidate Traits:**

Strong problem-solving and analytical skills

Excellent communication and collaboration abilities

Attention to detail and commitment to writing clean, efficient code

Passion for creating intuitive and engaging user experiences

Entrepreneurial mindset and willingness to take ownership

Curiosity and eagerness to learn and grow in a dynamic environment

Experience building for crypto is a huge 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.

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

Job Responsibilities:

• Collaboratively work with UX team, product managers, back-end engineers and other technical teams to create new, delightful and scalable UI
• Mentor junior members through training and individual support
• Responsible for all front end development on a project
• Ensure the technical feasibility of UI/UX designs
• Optimize application for maximum speed and scalability
• Identify and troubleshoot UX problems (e.g. responsiveness)
• Conduct layout adjustments based on user feedback
• Adhere to style standards on fonts, colors and images
• Optimize existing user interface designs
• Proactively learn and accordingly apply new technologies, best design practices and usability patterns

The ideal candidate must - 

• 5+ years of experience working with React or React-based frameworks
• Proficiency with browser-based debugging and performance testing
• Proficiency in Git and version control
• Considerable experience with a testing framework (Jest/Mocha)
• Familiarity with RESTful APIs and GraphQL
• Knowledge of modern authorization mechanisms, such as JWT Tokens
• Good understanding of common front-end development tools such as Babel, Webpack, NPM, Yarn etc
• Hands-on experience with CSS-in-JS libraries
• Proficient understanding of cross-browser compatibility issues and ways to work around them
• Keen to learn, mentor and willingness to take ownership of work items
• Possess strong communication and self-accountability

POSITION SUMMARY:

The primary responsibility of this position is to work under prototype team, to develop/maintenance the current system.

KEY RESPONSIBILITIES AND DUTIES:

• Develop new components
• Maintenance of existing components
• Design and Documentation of the newly created job
• Attend and resolve JIRA tickets
• Design & development of screens as per requirments

QUALIFICATION

• Hands on technical resource.
• 3 – 6 years’ experience.
• Mandatory Skills:
  • lit-element/lit-html+Angular2+//React/Vue/Stencil(Experience in at least 1 of these frameworks is must)
  • HTML, HTML5, CSS, CSS3
  • JavaScript, OOPS JavaScript, jQuery
  • SQL, MySQL, database
• Optional:
  • js