
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

Similar jobs
Role: UI Lead
Exp: 8+ Years
CTC: up to 30 LPA
Mode of Interview: 2 rounds onsite + 2 online
Key Responsibilities:
- Lead the UI team in designing and developing scalable, responsive, and performant user interface components.
- Define and enforce UI coding standards, best practices, and guidelines.
- Collaborate with UX designers to translate wireframes and prototypes into high-quality code.
- Work closely with product managers to understand requirements and translate them into technical solutions.
- Mentor and coach UI developers, providing guidance and support on technical challenges.
- Conduct code reviews to ensure code quality, performance, and adherence to design principles.
- Stay updated with the latest UI trends, technologies, and best practices.
- Drive innovation and continuous improvement within the UI development process.
Required Skills and Qualifications:
- Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent work experience).
- Proven experience (>8 years) as a UI developer with expertise in HTML5, CSS3, JavaScript/TypeScript
- Proven experience in front-end frameworks React (must), Angular(good to have), Vue.js(good to have).
- Solid understanding of responsive web design, accessibility, and cross-browser compatibility.
- Experience leading a team of UI developers in an agile environment.
- Strong problem-solving skills and ability to troubleshoot complex issues.
- Excellent communication skills with the ability to collaborate effectively with cross-functional teams.
We are looking for a talented Lead UI/UX Designer with experience in building SaaS
products to join our dynamic team. This role is perfect for a creative individual who thrives in a
fast-paced environment and is passionate about delivering exceptional user experiences from
concept to launch.
Salary No bar for good candidates.
Qualifications:
● Bachelor's degree in design, human-computer interaction, or related field; equivalent work
experience may be considered.
● Proven experience as a UI/UX Designer, preferably with a focus on SaaS products.
● Strong portfolio showcasing a range of UI/UX design projects and processes, including
wireframes, prototypes, and finished designs.
● Proficiency in UI/UX design tools such as Sketch, Adobe XD, Figma, or InVision.
● Excellent communication, collaboration, and problem-solving skills.
● Ability to thrive in a fast-paced, dynamic environment and manage multiple projects with tight
deadlines.
What you’ll be doing
- Lead the development of our platform’s front end.
- Work with the product and design teams along with the founders to build new product features from start to finish: through conception, research, implementation, and maintenance.
- Work closely with founders and internal/external stakeholders to build products, tools, and services from scratch and deliver high-quality software solutions.
- You'll leverage your frontend knowledge to help improve performance and reliability, and polish existing features.
- Share your technical expertise to help the team make thoughtful and scalable design decisions and identify performance bottlenecks to troubleshoot quickly.
- Manage product development priorities, deadlines, and deliverables.
- Ensure high-performant and responsive web applications and websites.
Skills & Qualities we’re looking for
- Bachelor’s/Master’s degree in Computer Science (or equivalent experience).
- 2-4 years of experience as a frontend developer (rare exceptions for highly skilled developers) at a fast-paced, preferably early / growth stage start-up.
- You're familiar with HTML, CSS, Javascript, and a React-like UI framework.
- Knowledge of codebases and version control systems (Git).
- You have experience debugging performance issues with UI in modern browsers across multiple platforms.
- Well-versed with SQL database design & RDBMS concepts.
- Strong arithmetic reasoning, logical and analytical thinking skills.
- Strong knowledge of code quality maintenance and performance analysis.
Exp in React JS,
React Designing, Api Integration, CSS, HTML,JavaScript,Redux,
- 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
- Experience with popular React.js workflows (such as Flux or 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
Job Overview:
As a Software Engineer, you will work as part of a software development team and be responsible for
designing, implementing, and maintaining the back-end of fast-growing web/mobile applications.
You could be an ideal candidate if you have a Bachelor's degree in Computer Science from a reputed
college. You need to have expert-level programming skills in ReactJs and other related JS stack with a
deep understanding of Consumer experience. You should have experience working effectively in software
development teams ensuring tight deadlines are met. You should be passionate about writing elegant
code that solves meaningful real-life problems.
What will your role look like?
● Write well-designed, testable, efficient, and high-quality code in Javascript/React/Redux to
implement a modern highly responsive web-based user interface.
● Design (LLD & HLD) and architect technical solutions for the business problems of a large-scale
system.
● Prepare and produce releases.
● Enhance & maintain analytics and SEO of web applications.
● Contribute to all phases of the Software development lifecycle.
Roles and Responsibilities
Who are we looking for?
● B.Tech/M.Tech/MCA degree in Computer Science, Engineering or a related subject
● 2-4 years of relevant work experience
● Strong problem-solving skills, Computer science fundamentals, Data structures, and Algorithms
● Hands-on experience with Javascript - React, Redux, Thunk, Saga , webpack, NPM/Yarn,
Server-side rendering, Client caching, PWA, AMP etc.
● Solid understanding of frontend components like CSS3/SAAS, Material UI, Bootstrap etc.
● Experience working with Design tools like Figma/Sketch/Zeplin as a developer and implementing
the same in React
● Experience with all phases of the software development life cycle, best practices, and Agile
Software Development.
● Ability to work autonomously.
Bachelor’s degree in computer science, computer engineering or similar.
- Previous work experience of 4-6 years as an angularJS developer.
- Proficient in CSS, HTML, and writing cross-browser compatible code.
- Experience using JavaScript building tools like Gulp or Grunt.
- Knowledge of JavaScript MV-VM/MVC frameworks including AngluarJS.
- Excellent project management skills.
- Proven experience implementing front-end and back-end JavaScript applications.
- Excellent communication skills.
- Critical thinker and good problem-solver.
Knowledge of fintech will be an advantage.
- 2-5 experience of working with SPA
- Highly skilled at front-end engineering using Object-Oriented JavaScript (ES5, ES6), various JavaScript libraries and frameworks (ReactJS), HTML and CSS
- Experience with Asynchronous and Futures (Promises) Design Patterns
- Proficient understanding of code versioning tools, such as Git
- Experience in developing Large-scale, Single-Page Applications (SPAs) and Unit Testing
- Good understanding of browser rendering behavior and performance
- Proficient understanding of cross-browser compatibility issues and ways to work around such issues
Good to have: Optional
- Working with Secure APIs using JWT/OAUTH







