Lead Frontend (React Js) Developer

About the Role

We're looking for a Frontend Software Engineer (Web & Mobile) who thrives on ownership and execution. You will build and maintain our React.js web app and React Native mobile apps (iOS + Android) using TypeScript, working across the full frontend stack to deliver reliable, fast, and polished consumer experiences. 

This is not a ticket-taker role. You will own features end-to-endfrom understanding the user problem and collaborating on a solution, to shipping high-quality UI, monitoring outcomes, and iterating when needed. We're especially excited about engineers who have worked in consumer product startups, where speed, quality, and user empathy matter equally. 

If you value your time, avoid over-engineering, and love moving meaningful product metrics through great execution, you'll fit right in.

What You'll Do

Web Development (React.JS)

• Build and own responsive, modular, and high-performance web experiences using React.js + TypeScript. 
• Design reusable components and scalable state/data flows
• Own UI performance: reduce unnecessary renders, optimize bundles, improve caching, implement lazy loading and code splitting.
• Integrate securely with backend APIs and ensure robust error handling, loading states, and edge-case coverage.
• Deliver pixel-perfect UI aligned with product and design intent, ensuring accessibility and cross-browser reliability.

Mobile Development (React Native)

• Develop and maintain our React Native apps across iOS and Android with a strong focus on stability and UX polish. 
• Implement complex flows including navigation patterns, deep linking, background tasks, push notifications, and in-app updates.
• Work with device APIs, sensors, native modules, and third-party SDKs when needed.
• Build smooth, delightful mobile interactions through animations and gestures (Reanimated, Gesture Handler).
• Own performance excellence on mobile: optimize memory, FPS, bundle size, and rendering behavior.
• Manage the practical realities of consumer apps: CI/CD pipelines, OTA releases, store compliance, and version rollouts. 

Engineering Ownership & Execution

• Own features end-to-end: understand the user journey, clarify requirements, ship, and follow through until impact is achieved.
• Write clean, testable, and maintainable code with high standards for reliability.
• Collaborate closely with Product, Design, Backend, Care/Sales (as needed) to deliver aligned outcomes. 
• Participate actively in code reviewsraising the bar for quality and architecture.
• Investigate and fix real production issues quicklyperformance regressions, crashes, UI bugs, and behavioral edge cases.
• Improve frontend standards, tooling, and developer experience across both web and mobile.

What Success Looks Like

In the first few months, you'll be successful if you:

• Ship meaningful user-facing features independently with minimal hand-holding.
• Improve app/web experiences in ways that users feel (speed, stability, clarity, joy).
• Take responsibility for outcomes, not just output.
• Make pragmatic, time-respecting engineering decisions (solve the problem without unnecessary complexity).
• Become a reliable owner of key areas of the product.

Required Skills & Experience

• 3+ years of production experience with React.js
• Strong command over JavaScript (ES6+), TypeScript, HTML5 CSS3. 
• Proven experience deploying consumer-grade mobile apps: Play Store/App Store releases, OTA updates, build pipelines. 
• Solid understanding of:
• Component-driven UI architecture
• State management and async data patterns
• API integration and robust error handling
• Debugging and profiling tools (Flipper, Chrome DevTools, Xcode, Android Studio)
• Comfortable with Git, CI/CD workflows, and agile/iterative product development. 
• Strong product and UX senseable to spot friction and propose improvements, not just implement screens.

Nice to Have

• Prior experience in consumer product startups (apps where UX, retention, and speed matter). 
• Experience building custom native modules
• Experience with monitoring/analytics tools (Sentry, Crashlytics, Firebase, Mixpanel, etc. ).
• Exposure to real-time features (WebSockets, video/chat, live tracking).
• Experience with offline-first or low-connectivity user flows.

Traits We Strongly Value

• High ownership: you take problems from start to finish and care about what happens after launch. 
• Execution & results driven: you prioritize shipping real value, not perfect theories. 
• Time-respecting engineer: you don't over-engineeryour solutions are clean, practical, and scalable. 
• User empathy: you think from the consumer's perspective and advocate for simplicity and delight. 
• Startup mindset: comfortable with ambiguity, fast iteration, and wearing multiple hats when needed. 

What We Offer

• Opportunity to work across both web and mobile and own product experiences end-to-end.
• A fast-moving, collaborative engineering team where quality and execution both matter.
• Room to shape frontend standards, architecture, and product direction.
• Competitive compensation and benefits.

• Ability to understand business requirements and translate them into technical requirements
• Write, test, and release world-class, production-ready code
• Ensure that the data needs of the UI are fulfilled with efficient database queries
• Ensure compliance with software engineering standards and processes defined at Simform.
• Optimizing components for maximum performance across a vast array of web enabled devices and browsers

• Solid hands-on experience with ReactJS frontend development with modern practices. 
• HTML5, JavaScript, ES6, and TypeScript expertise
• Experience with   React .js / D3.js / GraphQL is a plus
• Proficiency with CSS3, Sass, and Mixins - knowledge of GSAP would be a plus
• Familiarity with RESTful APIs integration 
• Experience with common front-end development tools such as Babel, Webpack, NPM, Bower, Gulp etc. 
• Familiarity with code versioning tools such as Git, SVN, Github, Bitbucket

Type, Location,

Full Time @ Anywhere in India

Desired Experience

3+ years

Job Description

What You’ll Do

• Taking an active role in architecting the solutions we build
• Designing and implementing web applications using JavaScript and its frameworks (i.a. React, Vue, Angular), HTML5 and CSS3
• Working closely with the dispersed development team, client, and project manager in the SCRUM methodology
• Ensuring that programming practices and code quality are respected
• Supporting other engineers with your expertise when needed (knowledge sharing)
• Leading your colleagues’ growth and development

What you bring to the table

• 3+ years of experience with JavaScript (good knowledge of ES2016; newer versions and TS 3+ are a plus)
• Experience in developing web applications using Angular2+ and another modern framework
• Being comfortable HTML5 and CSS3
• Experience with version control systems, preferably Git
• Demonstrated tech leadership in a medium-sized team, and the ability to design a complex system
• Eagerness to learn and constantly improve yourself
• Being a team player focused on getting things done

• Core Javascript, HTML, CSS, JSON understanding is mandatory
• Expertise of functional programming using JavaScript (ES5, ES6)
• Expertise of UI framework - React / Redux, RXJS
• Preferred experience with new generation of Web Programming - using Micro Service, REST/JSON, GraphQL and Component UI models
• Expertise with data visualization flow development along with usage of modern charting and graphical java script libraries
• React / Redux, RXJS, HTML, CSS, Javascript (ES5, ES6), Data visualization and Chart Libraries
• Data Structure and Design Pattern
• Strong knowledge of JSON data handling, GraphQL and their working

React JS & AWS

• Proficient working knowledge of React JS,Redux, ES6, Node JS, VSCode, ES Lint, HTML5, CSS3, Javascript, jQuery, Bootstrap 4
• Ability to learn and adapt on customer expectations
• Passion for user experience and user - centric development
• Strong communication skills that include leading design - related conversations, ability to build and nurture good relationships and foster an environment for collaboration
• Self - starter and passionate learner
• Creative problem - solver with a strong eye for detail
• Experience with version and source control, preferably Git Lab
• Should have knowledge on micro services.
• Overall experience between 4 yrs to 8 yrs.

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.

Responsibilities:

• 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

Skills And Qualifications

• Proficient understanding of web markup, including HTML5, CSS3
• Basic understanding of server-side CSS pre-processing platforms
• Proficient understanding of client-side scripting and JavaScript frameworks, including jQuery
• Good understanding of ReactJS, Native
• Basic understanding of Django REST framework
• 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.
• 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.

Job Description:

1. Developing the latest user-facing features using React.js.
2. Translate designs and wireframes into high-quality and responsive screens.
3. Building reusable components and front-end libraries for future use.
4. Learn and understand user interactions & Translate designs and wireframes
into high-quality code.
5. Optimizing components for maximum performance across a vast array of web-capable devices and browsers.
6. Creating servers and databases for functionality and coordinating with various
teams working on distinct layers.
7. As a MERN Stack Developer, you will be involved from conception to
completion with projects that are technologically sound and aesthetically
impressive.

Skill Requirements:

1. Full-stack experience designing and building scalable applications end-to-end.
2. Excellent JavaScript skills and strong proficiency in React.
3. Familiarity with the MERN stacks (Mongo DB, Express.JS, React.JS, and Node.JS)
and Working experience with React, Redux, ES6.
4. Experience building backend APIs using Node JS and Express JS.
5. Experience with NoSQL databases such as Mongo DB, mongoose, aggregation
framework, and Redis.
6. Experience with Web sockets and related frameworks (e.g. Socket.IO) and
Knowledge of JSON Web Token.
7. Experience using RESTful APIs and basic Authentication Mechanisms.
8. Create and Maintain Microservices & Ability Showcase past work via live web
pages and familiarity with code versioning tool Git

Job Location- Pune

Experience – 4 to 7 Years 
Notice Period - Immediate preferred 

The Ideal Candidate-

This position is for UI Developers with hands-on experience in leading-edge technologies, looking to mark a niche in the software Industry

Essential Skills-
.

• Strong Command on Core Javascript, Core Java
• Strong Command on Angular JS and React JS
• Strong Knowledge of HTML5, CSS3 
• Highly Preferred, experience in D3, Canvas API 
• Ability to work on advanced javascript frameworks

If you are interested in an exciting role with learning and rewards, do apply.