Javascript/React Developer

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).

About UpSolve

Working on new tech solutions around Image, Video and NLP. At UpSolve we focus on making AI available and affordable for all at scale.

Job Description:

The selected candidate will be responsible for the ideation, development, and execution of mobile and web apps.

Freshers please DO NOT apply.

Job Responsibilities:

- Advise on the design of mobile and Web apps

- Develop entire android applications using Flutter, Android Studio or other platforms.

- Build Web apps in python backend using Flask or Django.

- Communicate and collaborate with different teams regularly.

Job Requirements:

- Bachelor's/Master's degree in Engineering, Computer Science (or equivalent experience)

- 3+ years of experience in full-stack development

- Should possess a portfolio of code or apps for review

- Must be a critical thinker and provide effective and efficient solutions

Location: Mumbai

Work Mode: Work from Office

🔴Profile: React Native Developer

🔷 Experience- 2+ Years

🔷 Location- Mumbai, Andheri East

🔷 Mode- 5 Days WFO

(Only immediate joiners & candidates who have completed notice period)

✨ What we want:

✅ 2+ years React Native experience

✅ JavaScript, JSX & mobile development

✅ React Hooks & component lifecycle

✅ Native module integration (iOS/Android)

✅ State management (Redux/Context API)

✅ REST APIs & third-party integrations

✅ Navigation libraries (React Navigation)

✅ Mobile UI/UX best practices

✅ Testing frameworks (Jest, Detox)

✅ Mumbai, Andheri East based candidates only

No relocation cases - candidate should be present in Mumbai

Job Location - Hyderabad & Ahmedabad

Skills required – Angular, ionic

What you'll do:

• Perform complex application programming activities with an emphasis on mobile development:  Angular, ionic, Node, TypeScript, JavaScript, Apache Cordova, RESTful APIs and more
• Assist in the definition of system architecture and detailed solution design that are scalable and extensible
• Collaborate with Product Owners, Designers, and other engineers on different permutations to find the best solution possible
• Own the quality of code and do your own testing. Automate feature testing and contribute UI testing framework
• Become a subject matter expert for our mobile applications
• Deliver amazing solutions to production that knock everyone’s socks off
• Mentor junior developers on the team

What we’re looking for:

• Amazing technical instincts. You know how to evaluate and choose the right technology and approach for the job. You have stories you could share about what problem you thought you were solving at first, but through testing and iteration, came to solve a much bigger and better problem that resulted in positive outcomes all-around.
• A love for learning. Technology is continually evolving around us, and you want to keep up to date to ensure we are using the right tech at the right time.
• A love for working in ambiguity—and making sense of it. You can take in a lot of disparate information and find common themes, recommend clear paths forward and iterate along the way. You don’t form an opinion and sell it as if it’s gospel; this is all about being flexible, agile, dependable, and responsive in the face of many moving parts.
• Confidence, not ego. You have an ability to collaborate with others and see all sides of the coin to come to the best solution for everyone.
• Flexible and willing to accept change in priorities, as necessary

Preferred Qualifications:

• Proficient with Apache Cordova framework
• Built or maintained custom Cordova plugin
• Demonstrable knowledge of native coding background in iOS
• Understanding of Apple certificate and profile management
• Experience developing and deploying applications within Kubernetes based containers
• Experience in Agile and SCRUM development techniques

Company Profile:

We’re now looking for a passionate “/ReactJS Developer” who is willing to join us at an early stage and help us build a world-class product. 

Required Skills

• 2+ years of RELEVANT EXPERIENCE in ReactJS
• Strong Computer Science fundamentals - data structures and algorithms
• Strong understanding of ReactJS Ecosystem (State management, Component-based design, Hooks, Responsive design)
• Good with CSS (converting UI designs to code)
• Writing clean and maintainable code
• Proficient understanding of APIs and wiring them   
• Strong testing, debugging, and problem-solving skills
• Familiar with modern development practices - writing clean code, git versioning, understanding development workflows

DESIRED SKILLS: React.js, JavaScript, Redux, RESTful APIs, TypeScript

JOB SUMMARY
Thorough understanding of React.js and its core principles
Experience with popular React.js workflows (such as Flux or Redux)
Familiarity with newer specifications of EcmaScript
Familiarity with RESTful APIs
Knowledge of modern authorization mechanisms, such as JWT Web Token
Familiarity with modern front-end build pipelines and tools
Experience with common front-end development tools such as Babel, Webpack, NPM, etc.
Ability to understand business requirements and translate them into technical requirements
A knack for benchmarking and optimization
Familiarity with code versioning tools (such as Git, SVN, and Mercurial)
Familiarity with any ReactJS testing framework is plus

Job Description:

You will be responsible for maintaining and scaling a high quality React Native social media Application.

Technical

Candidate should have:

• Built end-to-end React Native application with at least 5K users or more
• 1-4 years work experience in developing Android & iOS apps using React Native, React.js
• Thorough understanding of React Native and its core principles
• Knowledge of how to integrate SDKs like Firebase, Mixpanel, OneSignal, Branch
• End to end feature development for the stories provided
• Has implemented local data storage, caching, app optimization techniques
• Knows how to write unit test cases.
• Aware of app store build forming and release process
• Knowledge or experience with User Interface and Visual Design principles and techniques
• Understanding of software development lifecycle and version control (preferably Git)
• Must have experience in delivering software via complete Continuous Integration and Continuous Delivery (CI/CD) pipeline

Non-Technical

The ideal candidate joining us will be:

• a keen observer and a good problem solver with good communication skills
• ambitious, self-driven & equally a fun-loving team-player
• The ability to own end to end responsibility - right from requirement to release

Experience

• React Native: 2 years (Required)
• React Hooks/Redux: 1 year (Required)
• React.js: 2 years (Required)
• HTML/CSS/Bootstrap/jQuery: 1 year (Preferred)
• Jest/Enzyme or any other tool for unit/functional: 1 year (preferred)
• Git/Gitlab: 1 year (Required)
• Firebase, Branch: 1 year (Preferred)

About Clan:

Clan is a QnA social media platform with invite-only access to 1% intellectuals in India. We aim to make social media much more civil and meaningful.

Compensation: 40k-50k

Responsibilities:

• Build the foundation of our supply side (enterprise) product from scratch. Maintain high standards of pixel perfect Ui’s and efficient User Experiences. 
• Our Supply Side ecosystem involves a plethora of products such as Catalog Management, Analytics Dashboard, Orders Processing, Finance Reconciliation, Notification centres etc. Develop a deep understanding of the mentioned use cases and build the systems for scale.
• Coordinate with Product managers, Product Designers & Backend Developers and outline sprints and tasks on a weekly basis.
• Conduct Comprehensive Unit tests before passing features to QAs. This requires a good top level understanding of backend infrastructure.
• Maintain High level of Code Quality and constantly optimize for performance and user experience.
• Be Collaborative. Self reliant and always keep pushing the limits of your knowledge.