React.js Developer

About One Impression

One Impression is one of the world’s largest influencer marketing platforms, working with 300+ global brands like Unilever, Nestle, and Amazon to connect with a diverse creator network. Our platform empowers brands and creators to collaborate seamlessly and scale their reach. To capture a significant share of global media ad spend, One Impression is quickly becoming the industry’s go-to influencer marketing platform.

About the Role

We are looking for a Frontend Engineer (SDE II) who is experienced in both React.js for Web and React Native for Mobile Apps. You will be responsible for architecting, implementing, and optimizing web and mobile applications while collaborating closely with Product, Design, and Backend teams.

This role is perfect for someone who enjoys working across platforms, building scalable systems, and enhancing the developer experience.

Key Responsibilities

• Architect and develop frontend solutions for both Web (React.js) and Mobile Apps (React Native).
• Build and optimize config-driven systems, reusable components, and common libraries.
• Work closely with Product Managers, Designers, and Backend Engineers to create seamless user experiences across platforms.
• Own and drive React Native-based mobile applications, ensuring modular, scalable, and performant code.
• Optimize web and mobile performance for speed, responsiveness, and efficiency.
• Set up and manage CI/CD pipelines for both web (Docker, Vercel) and mobile apps (Fastlane, App Store/Play Store).
• Implement and maintain state management using Redux, Redux Saga, Recoil, or MobX.
• Work with mobile-specific integrations, such as Firebase Push Notifications, Deep Linking, and Native Modules.
• Ensure cross-platform consistency by handling browser compatibility (web) and device compatibility (mobile).
• Write clean, maintainable, and reusable code, following best practices and design patterns.
• Debug and fix issues rapidly, ensuring a seamless Web & Mobile experience.
• Stay up-to-date with the latest trends and contribute to open-source projects, tech talks, and internal knowledge sharing.

Requirements

• 3-5 years of experience in frontend development, working with both React.js (Web) and React Native (Mobile).
• Strong expertise in JavaScript (ES6+), React.js, and React Native.
• Experience with bundlers like Webpack, Rollup, and Metro for React Native.
• Deep understanding of mobile CI/CD (Fastlane, App Store, Play Store) and web CI/CD (Docker, Vercel, Jenkins, GitHub Actions).
• Strong grasp of Web & Mobile performance optimization techniques.
• Experience with Redux, Redux Saga, MobX, or Recoil for state management.
• Good understanding of mobile UI/UX principles, animations (Reanimated, Gesture Handler), and responsive design.
• Basic familiarity with native iOS/Android development (Swift/Kotlin is a plus).
• Experience with Unit Testing (Jest, React Native Testing Library, Detox, Cypress, Appium, or Espresso).
• Strong debugging skills using Chrome DevTools (Web) and Flipper, Xcode, Android Studio (Mobile).
• Ability to work independently, take ownership of projects, and mentor junior engineers.
• Open to feedback and collaborative in working towards the best user experience.

Why Join One Impression?

- Be a part of one of the largest influencer marketing platforms globally, working with top brands and influencers.

- Opportunity to lead and shape a fast-growing marketplace product.

- Competitive salary and benefits package.

- A collaborative and innovative work culture in a rapidly scaling company.

Job Description : 

• Work with your team to design and build software applications to function across web applications
• Build reusable code and libraries for future use.
• Work closely with UX designs and work on integrating the wireframes into UI
• Validate the technical feasibility of UI/UX designs.
• Optimize application for maximum speed and scalability.
• Conduct thorough testing of user interfaces in multiple platforms to ensure all designs render correctly and systems function properly.
• Get feedback from, and build solutions for users and customers.
• Write functional requirement documents and guides.
• Ensure high-quality graphic standards and brand consistency
• Collaborate with other team members and stakeholders.
• Architect and build high-performance, scalable, and user-friendly mobile apps using native frameworks
• Optimize application performance and ensure responsiveness across different iOS devices.
• Integrate with RESTful APIs and other backend services.
• Implement unit and integration tests to ensure code quality.
• Collaborate with designers, product managers, and other stakeholders to deliver a seamless user experience.
• Stay up-to-date with the latest trends and advancements in UI development.
• Mentor and guide junior team members. Mandatory Requirements
• Minimum of 5 years working as a professional UI developer
• Proficient knowledge of web markup, including HTML5, CSS3 and Javascript .
• Expertise in front-end in any of the front-end frameworks like React.js
• Strong understanding of front-end coding and development technologies.
• Basic understanding of server-side CSS pre-processing platforms, such as LESS and SASS
• Experience with state management libraries like Redux
• Experience with unit testing frameworks like Jest or WTR
• Experience in E2E testing frameworks like Playwright or Puppeteer
• Familiarity with RESTful APIs and integration with backend services
• Experience with performance monitoring and Optimization tools.
• Excellent communication and collaboration skills.

We are looking for a highly motivated individual that can help us solve interesting and complex problems for our clients. You will be working closely with product and engineering teams based out of the USA, Europe, and India to build proof-of-concepts, validate strategic architecture decisions, and develop modern and scalable solutions. We firmly believe that your success is our success, and we are willing to take a stake in that.

About Altir

Altir is a product engineering company that builds top-notch software products for very select companies across various industries and stages of their lifecycle. We help start-ups to Fortune 500 companies nurture and transform validated ideas into successful products by amalgamating efficient business & technology strategy, development, and engineering capabilities. We are a team of entrepreneurs, engineers, product leaders, and designers who are builders and systems thinkers coming from some of the most iconic technology companies like Microsoft, Accenture, Apple, Google, and Salesforce. We exercise thorough attention to detail at every stage – from product exploration to delivery, integrating technology, automation, and our teams' expertise into the mix. We infuse our prowess from the consumer and enterprise worlds into every client's business. Our customers work with us to be their force multipliers, disrupters and to help them create unfair advantages.

Hailing from some of the world’s most innovative technology companies, we’re a team of seasoned entrepreneurs and makers. We’ve learned what it takes to build paradigm-shifting technology and companies, but we learned it the hard way. That’s why we created Altir - to be disruptive by design. By generating a suite of knowledge resources, category-defining playbooks, and reusable technology components, we’ve productized the launch and scale of transformational companies for maximum impact.

Company Link:

http://www.altir.co

Requirements

*5-10 years of software engineering experience with at least 4 years of experience in react.

*Programming languages (Typescript, JavaScript, Reactjs , redux)

*Creating fluid visual interactions. Developing and implementing mobile user experience patterns.

*Developing and maintaining iOS/Android applications from the requirements to the App Store.

Unit Test (Jest, Mocha), software design patterns and data structures.

*Excellent leadership, stakeholder management and program management skills.

*Successful experience in a properly functioning agile team would be extremely advantageous.

Required

*Design and develop user interface components using React.js This includes creating reusable components and front-end libraries for future use.

*Optimize components for maximum performance across a vast array of web-capable devices and browsers.

*Redux for state management.

*React JS developers should be proficient in modern web development.

*Implement automated testing platforms and unit tests.

*Develop and maintain user interfaces using React.js.

Must have

*Strong understanding of web technologies, including HTML, CSS, and JavaScript

*Experience with code migration and refactoring

*Strong problem-solving skills and ability to troubleshoot technical issues

*Excellent communication skills and ability to work collaboratively with cross-functional teams

*Strong attention to detail and ability to deliver high-quality code

*Ability to work in a fast-paced, dynamic environment

Benefits

*Participation in profit sharing

*Parental leave

*Opportunity to travel and work with our global team

*Flexible PTO and work timings

*Premium health insurance

*Teammate recognition awards

*Company get together, off sites and events

We are looking for a React Native developer interested in building performant mobile apps on both the iOS and Android platforms. You will be responsible for architecting and building these applications, as well as coordinating with the teams responsible for other layers of the product infrastructure. Building a product is a highly collaborative effort, and as such, a strong team player with a commitment to perfection is required.

Responsibilities:

• Build pixel-perfect, buttery smooth UIs across both mobile platforms.
• Leverage native APIs for deep integrations with both platforms.
• Diagnose and fix bugs and performance bottlenecks for performance that feels native.
• Reach out to the open source community to encourage and help implement mission-critical software fixes—React Native moves fast and often breaks things.
• Maintain code and write automated tests to ensure the product is of the highest quality.
• Transition existing React web apps to React Native

Qualification:

• Good knowledge about React/React Native
• Should be aware about state management library Redux
• Must have knowledge of es6+
• Ability to write well-documented, clean JavaScript code
• Rock solid at working with third-party dependencies and debugging dependency conflicts
• Familiarity with native build tools, like XCode, Gradle
• Good to have knowledge about writing test cases
• Good to have knowledge about typescript
• Preferred if there is at least one app on play store

About Monarch: 

At Monarch, we’re leading the digital transformation of farming. Monarch Tractor augments both muscle and mind with fully loaded hardware, software, and service machinery that will spur future generations of farming technologies. 

With our farmer-first mentality, we are building a smart tractor that will enhance (not replace) the existing farm ecosystem, alleviate labor availability, and cost issues, and provide an avenue for competitive organic and beyond farming by providing mechanical solutions to replace harmful chemical solutions. Despite all the cutting-edge technology we will incorporate, our tractor will still plow, till, and haul better than any other tractor in its class. We have all the necessary ingredients to develop, build and scale the Monarch Tractor and digitally transform farming around the world. 

Job Description: 

This role requires you to be a tech-savvy contributor in translating customer needs and user requirements into an interactive web-based application. You must be a good problem solver, have keen attention to detail and take responsible actions in ensuring the application is optimized both in technology and in delivering the best user experience.  

Work closely with product and engineering teams to create elegant, responsive and interactive interfaces.  

Handcraft UI/UX designs into prototypes  

Write reusable components and address performance issues of the product. 

Requirements: 

Bachelor Degree / Masters in Engineering (ECE or CSE preferred)  

A minimum of 3 years of relevant work experience as a Web, UI or Frontend Engineer 

Work experience in React JS / React TS and Data structure is a must. 

Sound knowledge in JavaScript, HTML and CSS,  

Working knowledge of Git: creating, merging branches, cherry-picking commits, examining the diff between two hashes. 

Be able to write clean and maintainable code with attention to performance 

Keen eye for design, and have experience of debugging using browser console. 

An ability to perform in a fast-paced environment and bring in optimal flow for rapidly changing design. 

AWS experience is a plus although not mandatory. 

What you will get: 

At Monarch Tractor, you’ll play a key role on a capable, dedicated, high-performing team of rock stars. Our compensation package includes a competitive salary, excellent health, dental and vision benefits, and company equity commensurate with the role you’ll play in our success.  

Roles and Responsibilities

• Working with designers, product managers to collaboratively own the front-end layer at FalconBrick and deliver stellar end user experiences
• Building responsive and elegant mobile and desktop web UIs
• Test, debug and maintain the application software throughout the product lifecycle
• Architect, develop and maintain front-end libraries

Desired Candidate Profile

• You love working with JavaScript and are very familiar with JavaScript design patterns and can build fairly complex UI
• Have at least 2 years experience in development of responsive web/mobile applications using advanced JS and web technologies
• And with at least 1 year of experience building frontend UI with a framework like ReactJS
• Youre very comfortable in writing HTML and CSS and love designing beautiful webpages
• Have good communication skills, strong work ethics And are comfortable with agile, iterative development practices and code reviews

WHO YOU ARE

To be successful in this role, you’ll need to have the following skills:

• Love for coding: A fanatic about writing beautiful and scalable code.
• Sense of analytics: Strong analytical and troubleshooting skills. Should be resourceful, innovative and inventive.
• Dynamic: Should be comfortable in dealing with lots of moving pieces. Have exquisite attention to detail, and are comfortable learning new technologies and systems. 
• Team player: Knack for influencing without being authoritative. Pitch in wherever the team needs help, from writing blog posts to supporting customers.
• Accountability: High sense of ownership for your code and relentlessness to deliver projects with high business impact. 

KEY QUALIFICATIONS

• BE/BTech in Computer Science or related field. 
• Minimum 3+ years of UI/Frontend development and a strong understanding of building complex layouts using JavaScript, CSS and HTML.

KEY SKILLS

• Strong computer system analysis and design skills in current methodologies and patterns including vanilla JavaScript, some experience with ReactJS, Redux, React Native, Webpack, and Typescript or similar library/tools.
• Obsessed with WPO (Web Performance Optimization) and web/mobile performance analysis.
• Experienced with web standards and protocols such as HTTP, DNS, TCP/IP, and socket APIs in general.
• Familiar with web security, SEO, accessibility and internationalization.