Middle Frontend developer

To work on a project of a large fintech company, a specialist is required - a Middle Frontend developer

Responsibilities:

• To develop and maintain a service with a micro-frontend architecture;
• Participate in determining the direction of service architecture development and technology selection;
• Solve design problems taking into account the requirements for security, clustering and fault tolerance together with SRE engineers;
• Design and develop public service APIs and third-party service integration mechanisms;
• Implement and integrate the AI assistant and recommendation systems into the functionality of the service;
• Improve the reliability and quality of service at all levels, optimize performance, and develop monitoring tools;
• Provide test coverage (UNIT, integration, API, load);
• Participate in product development and idea generation;
• Participate in retrospectives of incidents on the prod and take measures to resolve emergency situations;
• Participate in sprint planning, evaluation, and task decomposition;
• Conduct arch and code reviews of colleagues' decisions, provide reasoned criticism;
• Refine and document your own solutions, provide advice in the preparation of test scenarios;
• To accompany the stages of product introduction into operation.

Requirements:

• Work experience as a Frontend developer - at least 3 years;
• JavaScript (ES6+): deep understanding of closures, prototypes, event loop, this, async/await, promises, modules;
• TypeScript: confident work with types, generics, interfaces, decorators, integration with frameworks;
• HTML5 /CSS3: semantic layout, adaptability, accessibility (a11y), CSS methodologies (BEM, etc.), CSS-in-JS;
• React.js: Understanding the lifecycle of components, Hooks (useState, useEffect, useContext, useReducer, useMemo, useCallback and custom), State Management (Redux, Zustand, MobX, Context API, Effector), Performance optimization (memo, useCallback, lazy loading), react-router;
• Knowledge of feature-sliced, atomic design methodologies;
• Knowledge of design patterns: Observer, Factory, Singleton, Strategy, HOC, Render Props, etc.
• Knowledge of Micro Frontends architecture (Module Federation, Module Federation 2);
• Understanding the Critical Rendering Path;
• Experience configuring Webpack, Npm, Yarn;
• ESLint setting skill, Prettier;
• Working with API: REST, GraphQL, WebSockets;
• Experience virtualization rendering of large amounts of data;
• Adaptive and cross-browser layout: media queries, flexbox, grid, fallbacks;
• Adaptive and cross-browser layout: support for older browsers, adaptation to mobile browsers;
• Working with Docker (building images, launching containers);
• The ability to use the DevTools and Lighthouse tools;
• Experience in implementing the localization/internationalization mechanism;
• Experience working with NodeJS;
• NGINX configuration knowledge and experience;
• Experience using Unit Testing tools (Jest);
• Experience using integration/api/e2e testing tools (playwright);
• Experience using snap testing tools;
• The ability to explain and justify the choice of technologies;
• The ability to identify and solve problems.
• Higher education.
• Knowledge of the Russian language is mandatory