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Senior Front-end Engineer (React)

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StartupSoft

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Location:
Ukraine

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

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Job Description:

This project focuses on empowering modern cities to understand how people and systems move through urban spaces. It provides public organizations and local decision-makers with clearer insights, helping them plan smarter, distribute resources more effectively, and respond to community needs with confidence. By turning complex, real-world signals into accessible visual information, the platform supports safer streets, more efficient mobility, and long-term sustainability initiatives.

Job Responsibility:

  • Develop and maintain React.js web applications with a focus on performance and scalability
  • Build reusable components, hooks, and front-end libraries for future use
  • Translate UI/UX wireframes and design mockups into high-quality code
  • Optimize applications for speed, responsiveness, and SEO
  • Integrate front-end components with FastAPI or backend services
  • Manage application state using tools such as Redux, Zustand, Recoil, or Context API
  • Write clean, maintainable code following industry best practices
  • Debug issues, perform root-cause analysis, and implement timely fixes
  • Collaborate with cross-functional teams, including backend developers, designers, and QA
  • Participate in code reviews, agile ceremonies, and sprint planning
  • Ensure application security, accessibility, and browser compatibility
  • Maintain project documentation and contribute to technical decisions

Requirements:

  • Strong proficiency in JavaScript (ES6+) and React.js
  • Hands-on experience with HTML5, CSS3, and responsive design principles
  • Experience with state management libraries (Redux, MobX, Context, Recoil, etc.)
  • Familiarity with REST APIs
  • Understanding of front-end build tools (Webpack, Vite, Babel)
  • Proficiency with Git and modern development workflows
  • Knowledge of component-driven development and design patterns
  • Strong problem-solving skills and attention to detail
  • Good communication and collaboration abilities
  • Ability to work in a fast-paced, agile environment
  • Self-motivated with strong ownership of tasks and deliverables

Nice to have:

  • Experience with TypeScript
  • Familiarity with UI framework Chakra UI
  • Knowledge of testing libraries (Jest, React Testing Library, Cypress)
  • Understanding of CI/CD pipelines and deployment on platforms like AWS, GCP, or Vercel
  • Experience with performance optimization and web vitals
What we offer:
  • Global collaboration opportunities
  • Core team membership
  • Equity and ownership potential
  • Premier workspaces
  • Competitive compensation package
  • Cutting-edge technology environment
  • Impactful project contributions
  • Collaborative company culture

Additional Information:

Job Posted:
December 12, 2025

Employment Type:
Fulltime
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