Sr Frontend Engineer

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.

Primary responsibilities: 

·        Design, develop web applications using AngularJS 6 or above

·        Work closely with onsite, offshore, and cross functional teams, Product Management, backend developers, SQA teams to effectively use technologies to build and deliver high quality and on-time delivery

·        Proactively Identify risks and failure modes early in the development lifecycle and develop POCs to mitigate the risks early in the program

·        Assertive communication and team skills

·        This individual be self-directed, highly motivated, and organized with strong analytical thinking and problem-solving skills, and an ability to work on multiple projects and function in a team environment.

·        Keep an eye on NFR’s and ensure our product is meeting all required compliances as per Carrier standards.

Experience and Skills Required: 

·        5-8 years of overall experience in web appSoftwareproduct development

·        At least 5 years of experience in AngularJS

·        Solid working knowledge of using Cloud native resources for data retrieval and persistence.

·        Thorough working knowledge in integrating with Azure, azure functions, Microservices etc.,

·        Having work experience in Javascript frameworks is an added advantage.

·        Experience in executing CI/CD processes

Qualifications:

·             B.E/B.Tech/MCA/M.Tech qualification

Why LiftOff? 

We at LiftOff specialize in product creation, for our main forte lies in helping Entrepreneurs realize their dream. We have helped businesses and entrepreneurs launch more than 70 plus products.

Many on the team are serial entrepreneurs and have had a history of successful exits.

• 5+ years of experience, working on frontend technologies
• Individual contributor - responsible for the design, coding, and unit testing
• Should have good working experience in React and React Native
• Should have a good understanding of state management in frontend/UI applications
• Proficiency in Javascript / ECMAScript 6+
• Creating custom, general-use modules, and components that extend the elements and modules of React
• Good knowledge of data structures, problem-solving / algorithms
• Knowledge of creating custom / reusable components
• Should know OOP Concepts

We are a group of passionate people driven by a set of core values. We strive to make every process transparent and have flexible work timings along with great startup culture and vibe. There are no job designations because its a flat hierarchy.

• Identify bad code practices in JavaScript and write new analyzers to detect them.
• Improve the coverage of automatically fixable issues.
• Ensure fewer false-positives are reported by the analyzer.
• Work on the internal tools that support analysis runtimes.
• Contribute to open-source static analysis tools.

• Strong foundational knowledge in Computer Science.
• At least 3 years of professional software development experience in JavaScript.
• Understanding of the nuances of execution of the source code (AST, data flow graphs, etc).
• Familiarity with JavaScript practices followed in the industry.
• Native experience with Linux/Unix environment.
• A focus on delivering high-quality code through strong testing practices.

We are looking for a skilled react.js developer to join our front-end development team. In this role, you will be responsible for developing and implementing user interface components using React.js concepts and workflows such as Redux, Flux, and Webpack. You will also be responsible for profiling and improving front-end performance and documenting our front-end codebase.

To ensure success as a react.js developer, you should have in-depth knowledge of JavaScript and React concepts, excellent front-end coding skills, and a good understanding of progressive web applications. Ultimately, a top-class react.js developer should be able to design and build modern user interface components to enhance application performance.

• 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.

• Bachelor’s degree in computer science, information technology, or a similar field.
• Previous experience working as a react.js developer.
• In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.
• Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.
• Experience with user interface design.
• Knowledge of performance testing frameworks including Mocha and Jest.
• Experience with browser-based debugging and performance testing software.
• Excellent troubleshooting skills.
• Good project management skills.

Senior Front End Engineer (React.js & React Native - Mobile Experience)

Job description

Fulfil’s software engineers develop the next-generation technologies that change how millions of customer orders are fulfilled by merchants. Our products need to handle information at a massive scale. We're looking for engineers who bring fresh ideas from all areas into our technology.

As a Front End software engineer, you will work on the ReactJS & React Native (Mobile Experience) powered user interface used by Fulfil merchants to manage their back-office operations. This is mission critical software and your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux) & React Native (Mobile Experience). You will ensure that these components and the overall application are robust and easy to maintain. In this role, you will be collaborating closely with the rest of the team working on different layers of infrastructure in an international environment. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality are important.

What You’ll Do:

• Collaborate with a small yet extraordinarily talented team of engineers to implement front-end technologies
• Develop new user-facing features using React.js & React Native (Mobile Experience)
• Work closely with the Design and Product teams to translate complex technical workflows into delightful user experiences
• Define how Fulfil builds user interfaces and ensure that we’re utilizing and keeping up with modern web standards
• Continually test, measure, and iterate on the results of your work in the spirit of continuous improvement
• Write clean, reusable, and well-tested front-end code
• Help to bridge the responsibilities of the Product and Engineering teams, spending time with both on the way to launching new products
• Architect efficient and reusable front-end abstractions and systems that drive complex web applications
• Build and contribute to open source projects
• Build reusable components and front-end libraries for future use
• Optimize components for maximum performance across a vast array of web-capable devices and browsers

Requirements

We’re Looking for Someone With:

• 5+ years of experience as an engineer
• Experience in building large-scale web applications in a fast-moving team environment
• A strong understanding of UX and UI design standards
• The perfectionist’s touch on a pragmatist’s deadline: you strive for pixel-perfection and intuitive functionality
• Strong proficiency in JavaScript (2-4 Years of experience), including DOM manipulation and the JavaScript object model
• Thorough understanding of React.js & React Native (Mobile Experience) and its core principles, with experience in popular React.js workflows (such as Flux or Redux) 
• Experience with common front-end development tools such as Babel, Webpack, NPM, etc
• The ability to bring any design to life with HTML and CSS, with cross browser compatibility and accessibility
• Smarts, humility, communication skills, and equal willingness to teach and learn
• Familiarity with RESTful and GraphQL APIs
• Knowledge of modern authorization mechanisms, such as JSON Web Token
• Experience in developing large client side JavaScript applications
• Familiarity with code versioning tools like GIT
• Experience with Javascript testing tools and test automation

Nice to Haves:

• Prior experience at a growth stage Internet/Software company
• Demonstrated work beyond the front-end, experienced in integrating with a wide array of back-end technologies and services (e.g. experience with Python, AngularJS)
• Experience developing large client-side applications and optimizing them for performance
• You can straddle client and server development, creating APIs that drive web apps
• You understand the intricacies of timezones
• Web optimization, performance tools, and load testing
• You maintain or contribute to an open-source project

• REQUIREMENTS

  • Write hand-coded HTML5, JS, and CSS(SCSS) that is thoroughly standards-compliant.

  • Solid Javascript experience.
    -WordPress Must needed
    -Experience designing and developing responsive design websites

  • Knowledge of modern authorization mechanisms, such as JSON Web Token

  • You know how to architect all components of a frontend project

  • You have experience reading API documentation and working with different endpoints to compose the desired effect

  • You know how to run projects through solid processes (things like code reviews, reviewing stories, planning)

  • Ability to understand business requirements and translate them into technical requirements

  • Picks up new technologies quickly and efficiently

  • Uses Git effectively

  • Know how to create tests and why it's important

  • Knowledge of OOP and software design principles

  • You know how to optimize frontend load times, debug rendering issues, and overall provide a smooth experience to the user.

  • Knowledge of responsive frontends

  • You don't have to be an expert in backend tech, but you'll need to understand how to integrate with the backend guys.

  • Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform

• WHAT do WE expect?

  • Someone who is comfortable taking on multiple projects at the same time, juggling tasks.

  • Experience of working in and collaborating with teams

  • Should take ownership of tasks.

  • Acumen. You must be able to think and judge multiple solutions for a problem and be able to reason between them.

   

  GOOD TO KNOW

  • Experience in Linux and command-line interface.

  • JS/Webpack/Browserify.