Senior Frontend Engineer

Responsibilities

• Develop and maintain high-quality frontend applications and features

• Write clean, maintainable, well-tested code with comprehensive unit and E2E test coverage

• Build semantic, adaptive, cross-browser, and cross-platform layouts following web standards and accessibility best practices

• Design and implement reusable component systems and contribute to the shared UI library

• Optimize application performance (rendering, bundle size, Core Web Vitals)

• Collaborate with designers (Figma) to deliver pixel-perfect, consistent implementations

• Integrate with backend services and external APIs; agree on API contracts with backend engineers

• Configure and improve build tooling, CI/CD pipelines, and Docker environments

• Participate in code reviews, technical discussions, and architectural decisions

• Mentor Middle and Junior engineers and contribute to improving product quality
  
  

ABOUT THE TEAM

You will join a product engineering team of frontend, backend, QA, and DevOps engineers working closely with Product and Design. The team owns its features end to end: from implementation and testing to release and monitoring.

Typical Tech Stack:

• Languages: JavaScript (ES6+), TypeScript

• Frameworks: React, Vue, Next.js (SSR)

• State Management: RTK, MobX, Zustand, Pinia

• Build Tools: Vite, Webpack, SWC

• Styling: SCSS, CSS Modules, CSS-in-JS

• Quality Tools: ESLint, StyleLint, Prettier, Husky

• Testing: Unit and E2E testing frameworks

• Infrastructure: Docker, GitLab CI/CD

Nice to have

Required:

Core JavaScript/TypeScript Expertise:

• 5+ years of commercial frontend development experience

• Advanced proficiency inJavaScript (ES6+), including asynchronous programming (async/await, Promises), prototype-based OOP, classes, and memory management fundamentals

• DeepTypeScriptknowledge: generics, utility types, custom type declarations, and extending library types

Frontend Engineering Skills:

• Advanced experience with semantic, adaptive, cross-browser, and cross-platform layouts; understanding of web standards and accessibility

• Strong CSS skills, including SASS/SCSS and CSS-in-JS solutions

• Experience with modern frameworks (React,Vue, or similar): reactivity principles, state management, component optimization, and render control

• Experience with various state managers

• Experience with SSR/isomorphic applications

• Experience buildingcomponent systems, including the compound components approach

• Understanding ofdata structures, algorithm complexity, and commondesign patterns

• Knowledge of basic caching techniques (e.g., LRU)

• Ability to decompose tasks and separate business logic from framework/library code

Tools & Practices:

• Experience configuring and optimizing build tools (Vite, Webpack)

• Experience with code quality tools (ESLint, StyleLint, Prettier, Biome)

• Experience writing unit and E2E tests

• Understanding ofREST APIfundamentals and experience integrating with external services

• Experience with Docker (configuring and optimizing containers)

• Proficiency with Git (GitLab)

• Confident use of Figma for design implementation

• Good written and spoken English

Preferred:

• Experience with hybrid applications (WebView, React Native)

• Experience withWeb3 frontend development: wallet integration (embedded and browser wallets), wallet and signing standards (EIP-1193, EIP-6963, EIP-712),ethers.js,viem,wagmi

• Knowledge of Core Web Vitals and SEO principles

• Experience with web security fundamentals (XSS, CSRF, secure handling of user data)

• Experience with frontend performance profiling and monitoring

• Experience creating and maintaining design system libraries

• Experience leading technical initiatives or mentoring engineers

• Practical, up-to-date experience with modern AI tools (e.g. Claude, Copilot, Cursor) for code generation, review, and accelerating day-to-day engineering work

IDEAL CANDIDATE

• Eager to learn new technologies and approaches

• Engaged with business processes and product goals

• Detail-oriented with a responsible approach to work

• Actively participates in discussions to improve product quality

• Motivated to build products that make a difference for users