Middle React Developer

Home Office / Full time / Only English CVs

"ScrumLaunch is a Los Angeles based product innovation studio. We work with leading brands and high growth startups to design and build great products.

We specialize in web and mobile software applications that can scale to millions of users. Customer centric design and development is our DNA."

Requirements:

• At least 2 years of commercial experience in web development;
• Strong knowledge of , including hooks, context API, memoization, and state management;
• Experience with React Router;
• Understanding of React component lifecycle and effect management;
• Confident working with Redux or MobX;
• Ability to read, debug, and write vanilla JavaScript;
• Solid understanding of HTML, CSS, and JS – ability to build static websites without frameworks;
• Basic understanding of script execution, file system interaction, package managers (npm/yarn/pnpm);
• Good knowledge of DOM, events, and rendering cycles;
• Experience with Git, version control workflows, and pull requests;
• Familiar with JSON and handling async requests (e.g., fetch, Axios);
• Understanding of micro-frontend architecture;
• Experience with responsive and cross-browser layout;
• Proficient in HTML5, CSS3, and modern layout systems like Flexbox and CSS Grid.

AI Tools Experience:

• Productive use of AI-powered development tools such as Cursor, CodeGen, CodePilot, Claude Code etc.
• Understand limitations of AI agents and apply human validation to generated code;

Able to:

• Generate and refactor code with AI assistance;
• Automate repetitive development tasks;
• Analyze and troubleshoot code using AI suggestions.

Responsibilities:

• Develop new UI logic and features for the web application;
• Participate in frontend architecture discussions and planning;
• Maintain and support the existing codebase;
• Work with REST/GraphQL APIs, collect and transform data in JSON format;
• Process images using the Canvas API;
• Collaborate with team members during planning, code review, and technical discussions;
• Identify and fix bugs using monitoring tools like Sentry;
• Optimize and refactor existing frontend code;
• Developing a kiosk-mode application builder (constructor) for creating customizable apps for controlled environments (e.g., offline terminals, public kiosks).

Would be a plus:

• Solid experience with Canvas API: image editing, drawing, exporting;
• Familiarity with TypeScript;
• Experience with AWS (e.g., S3, CloudFront, Lambda);
• Experience integrating payment systems (e.g., Stripe);
• Experience using CSS preprocessors like SASS/LESS;
• Familiarity with the BEM methodology;
• Experience writing unit and integration tests (Jest, React Testing Library);
• Familiarity with bundlers like Vite or Webpack, and CI/CD pipelines;
• Experience with component-driven development using Storybook, , or similar;
• Understanding of design systems and UI libraries (MUI, Ant Design, Chakra UI, etc.);
• Experience with or SSR;
• Understanding of accessibility best practices (a11y), including building proper structure for screen readers, semantic HTML, keyboard navigation, ARIA roles, and WCAG compliance.

Language proficiency:

• English – Intermediate (B1)

We offer:

• Opportunity to grow as an expert;
• Flexible working conditions;
• 12 days of paid vacation;
• 5 sick days and off days;
• Friendly and open-minded team;
• English classes
• Access to psychologist support for mental well-being.