Full Stack Engineer; React​/Python​/Website & SEO

Your mission

Full Stack Engineer at Index, build across frontend, backend, platform layers. React-based apps, backend services (Python, Ruby on Rails), optimize performance, SEO, analytics, tracking.

Strong technical ownership, attention to detail, collaboration across product and marketing teams.

• Build and maintain React and Next.js components, pages, application logic.
• Troubleshoot and fix bugs in the existing codebase.
• Identify and resolve UI performance issues (code splitting, memoization, lazy loading).
• Monitor and optimize Core Web Vitals.
• Ensure reliable integration between frontend and backend services.

• Implement and manage Google Tag Manager (GTM) containers, tags, triggers, variables.
• Set up and maintain conversion tracking, event tracking, analytics integrations (GA4, Meta Pixel, etc.).
• Collaborate with marketing on tracking requirements and data layer implementation.
• Debug, QA, and validate tracking implementations across the website.
• Implement technical SEO best practices, including:
  • Schema markup
  • Meta tags
  • Sitemap management
  • Core Web Vitals optimization

• Apply SEO and accessibility best practices for public-facing pages.
• Ensure compliance with WCAG accessibility standards.

• Contribute to backend and platform development using Python and Ruby on Rails.
• Collaborate on API design, data models, and system integrations.
• Work with Postgre
  
  SQL, Redis, Docker-based environments.

• Write clean, well-structured, and well-documented code.
• Participate in code reviews and ensure appropriate test coverage.
• Contribute to build, testing, and deployment pipelines (CI/CD).
• Ensure stable deployments across environments.

• Frontend:
  Next.js, React.js, Type Script, Tailwind CSS, Shadcn, Radix UI, Framer Motion
• Backend & Platform:
  Python, Ruby on Rails, Ruby
• Databases &
  
  Infrastructure: Postgre
  
  SQL, Redis, Docker
• Testing:
  Jest
• Tooling:
  Git, Webpack
• Project Management:
  Agile methodology, Atlassian Jira, Bitbucket
• Communication:
  Slack, Google Meet

• Strong knowledge of HTML5, CSS3, JavaScript (ES6/7), and Type Script.
• Solid experience with React.js and modern frontend development.
• Experience with SASS, Bootstrap, and Tailwind CSS.
• Experience with unit testing using Jest.
• Good understanding of Git and modern build tools (e.g., Webpack).
• Ability to work independently with strong self-organization skills.
• Analytical thinking and problem-solving mindset.

• Knowledge of Feature‑Sliced Design (FSD) architecture.
• Experience with Framer Motion or other animation libraries.
• Experience with Formik and Yup.
• Familiarity with Rollup.
• Hands‑on experience with Python and/or Ruby on Rails platforms.

• A role with real ownership across frontend, backend, and platform concerns.
• Close collaboration with product, design, and marketing teams.
• The opportunity to influence performance, SEO, and analytics at a technical level.
• A modern tech stack and agile working environment.
• A culture that values quality, autonomy, and continuous improvement.