Senior ReactJS Engineer

Position Title : Frontend / Chrome Extension Developer (React + TypeScript)

Experience : 3+ years

Location : Remote

Job Role Summary :

Build and ship production-ready Chrome extensions that inject UI into existing web apps. Own content scripts, DOM integration, performance, and accessibility (WCAG 2.1 AA).

Mandatory Skills :

React, TypeScript, Chrome Extensions (MV3), Content Scripts, DOM Injection, MutationObserver, TailwindCSS/CSS Modules, Accessibility (WCAG 2.1 AA).

Key Responsibilities :

• Develop Chrome extensions using React + TypeScript.
• Inject and manage UI components within third-party web app DOMs.
• Write and maintain content scripts; handle dynamic pages via MutationObserver.
• Implement clean, responsive styling with TailwindCSS or CSS Modules.
• Ensure accessibility (WCAG 2.1 AA), keyboard navigation, and ARIA semantics.
• Integrate with APIs, manage extension permissions, storage, and messaging.
• Optimize performance, handle edge cases across sites, and write basic tests.

Required Skills :

• Strong React + TypeScript in production.
• Chrome Extension architecture: manifest v3, content/background scripts, messaging, permissions.
• DOM manipulation and safe UI injection strategies.
• MutationObserver, event delegation, handling SPA route changes.
• TailwindCSS or CSS Modules; solid CSS fundamentals.
• Accessibility (WCAG 2.1 AA) and cross-browser compatibility (Chromium/Firefox optional).
• Familiarity with build tooling (Vite/Webpack), linting, and Git.

Nice-to-Have :

• Experience with service workers, storage (sync/local), and i18n.
• Testing with Jest/RTL/Playwright.
• Security basics for extensions (CSP, sandboxing).

Core Responsibilities

Front-end Development:

o Develop web applications using React, flask. o Implement responsive design to ensure user-friendly interfaces.

o Utilize mapping libraries (e.g., Leaflet, Mapbox) to display geospatial data.

Back-end Integration:

o Work with APIs and manage data flow for project analytics and management.

o Enhance features for robust data handling and real-time project analysis.

Cloud Deployment:

o Deploy and manage web applications on AWS and similar platforms. o Optimize for performance, scalability, and storage efficiency.

GIS and Mapping Tools:

o Develop tools using GIS data like KML and Shapefiles. 

We are building new-age billing and pricing infrastructure for SaaS companies. As SaaS pricing evolves from vanilla subscription-based models to more granular usage-based models, billing and pricing infrastructure needs to be completely reimagined.

We're building our founding team and are looking for a front-end developer, who can take ownership of the user-facing side of our product. Your primary roles and responsibilities will evolve as the team grows.

Responsibilities:

• Taking full ownership of building a pixel-perfect frontend product
• Understanding code quality, maintainability, modularity, and scalability
• Break down large tasks into independent smaller chunks
• Implementing good testing practices to ensure rapid iteration
• Communicating with both technical and non-technical stakeholders to understand their points of view and to discuss your own ideas

Requirements:

• A basic understanding of backend development is a plus
• 1-3 years of experience
• Capable of building the frontend part of web applications with minimal guidance
• Proficiency in Javascript, Reactjs, HTML, and CSS
• Knowledge of other Javascript frameworks is a plus. Tailwind CSS/Tailwind UI experience is preferred but not required.
• Comfortable with frontend build systems
• Good understanding of frontend optimization
• Good at making a designer's design come to pixel-perfect reality
• Good at making decent interfaces from basic wireframes (without a designer's help) when needed
• Understanding of SSR is a plus, but not required
• Familiarity with billing systems, CPQ, and accounting systems is a plus
• Entrepreneurial mindset
• Self-driven individual with high ownership and a strong work ethic
• Good communication skills.

Benefits:

• Health insurance
• Generous vacation policy
• Learning and development budget
• Team events and company offsites
• Choose your laptop
• Maternity and Paternity benefits

FirstFiling is a FinTech startup that is managed, operated, and driven by Chartered Accountants, Company secretaries, IT engineers, and Lawyers. We provide registration and financial compliance services to businesses and individuals across India.

Our aim is to simplify the lives of people by helping individuals and businesses with mandatory compliances, filings, and statutory requirements while promoting financial literacy among the masses. 

Role: UI/UX Developer (1 opening)

Job Location: Jaipur (Full-time, work from office)

Job Description:

Technology Profile-

The candidate must have experience in the following technologies (the more the better):

Frontend:

Core - JavaScript, CSS, Bootstrap, etc.

Frameworks - ReactJS, Angular, Vue, etc.

Requirements:

• Capable of building UI from wireframes
• Able to clone/layout experience with provided toolset and design
• Ability to reuse components
• Proven experience in working with Git and Github 
• Familiarity with MVC (Model-View-Controller) design patterns
• Understanding of OOP concepts

Furthermore, the candidate must have built or published any web app or project through which they can demonstrate their experience and knowledge of the aforementioned technologies and requirements.