React Developer (Middle/Senior) - part time

Permanent employee, Part-time · Remote

Your mission
We are looking for a Mid/Senior React Developer who can take ownership of front-end development, and ensure high-quality user experiences across our platform. The ideal candidate is proactive, detail-oriented, and comfortable working across new feature development, performance improvements, and support of an existing codebase.

Core Development

• Build and maintain React components, pages, and application logic.
• Use modern React patterns to ensure scalable and reusable code.

Performance Optimization

• Identify and fix UI performance issues (code splitting, memoization, lazy loading).
• Improve rendering efficiency and application responsiveness.

Data Management

• Implement and manage state solutions (Redux, Zustand, Context, etc.).
• Optimize data fetching, caching, and synchronization with backend APIs.

SEO & Accessibility

• Apply SEO best practices for public-facing pages.
• Ensure compliance with accessibility standards (WCAG).
• Deployment & CI/CD
• Contribute to build, testing, and deployment pipelines.
• Ensure stable deployments across environments.

Code Quality

• Write clean, well-structured code and maintain documentation.
• Participate in code reviews and ensure testing coverage.

Feature Development

• Develop new features based on product requirements.
• Collaborate with product, design, and backend teams.

Repository Support

• Troubleshoot and fix bugs in the existing codebase.
• Refactor and improve legacy components when needed.

Our Tech stack

• Next js, React js, Tailwind CSS, Typescript, Shadcn, Framer-Motion,Radix-Ui, Ruby on Rails, Ruby, PostgreSQL, Redis, Docker

Agile methodology

• For project management, we use tools like Atlassian Jira and Bitbucket
• Communication – Slack and Google Meet.

Your profile

• Strong knowledge in HTML5, CSS3, JavaScript ES6/7, Typescript
• ReactJS
• SASS, bootstrap, tailwindcss
• Unit testing with Jest
• Git, Webpack
• Independence, good self-organisation, analytical thinking

Beneficial knowledge:

• Feature Sliced Design (FSD) architecture knowledge
• Framer-motion or any animation lib
• Formik & yup
• Rollup.

Why us?

• Competitive salary
• Private Health Plan
• Sport allowance 25 USD/month
• International Team Building
• Remote-first company
• Opportunity for self-realization and professional growth
• "Great Place to Work" Certified Company.

About us
Index is a UK-based company providing end-to-end remote-work services, powered by our digital platform. We help leading companies like GoEuro, Vodafone, Venly, YC startups, and 100 more companies to scale their engineering team by finding and managing high-performing tech talent.

We are growing fast and have the vision of building the leading software development company in the world. If you are up for the challenge, we want you to join us!
Here are some reviews from our teammates on -> Glassdoor.

Index.dev's acquisition of Codemotion transforms the company from a talent marketplace into a full-service development partner. With expanded U.S. presence, deeper coverage in untapped regions, and proven Upwork expertise, Index.dev is now positioned to tackle bigger, more complex projects worldwide.

We are:

• Fastest Growing Tech Startup. We are growing faster than the market and have the vision of building the leading software talent network in the world.
• International Team. We bring together people from 7+ countries with varied work experience and functional expertise and different perspectives on strategic and organisational challenges.
• A Great Place to Work UK -certified company. Our place on the GPW prestigious list is driven by the employee engagement survey, measuring the extent to which everyone across Index feels about the culture we’ve developed collectively, making us a truly great workplace for all.

You would make an ideal candidate for our company if you are willing to commit to the following:
Above Average Principles:

• Integrity.
• Respect. Show empathy and respect to others and their feelings; Show others that you care.
• Extra-Mile. Excellence and work ethics. Ask the question: “What else can I do?”; Reject average, good to pass by.
• Move Quickly and Be Resourceful. Do more with less.
• Ongoing Learner. Ask the questions: “What coaching do you have for me?” and “What can I do better?“; What is the learning here?.
• Team Player. Talent wins games, but teamwork and intelligence win championships.
• Extra Smile. We look to the positive side in every situation. We love what we do every day. Ask the question: “What is good in this?”.