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Sigma Software Group logo
Sigma Software Group

We support enterprises, product houses, and startups with custom software solutions development and IT consulting.

Senior Front-End Developer

Frontend EngineerSoftware EngineerFull TimeRemoteSeniorTeam 1,001-5,000Since 2002H1B No SponsorCompany SiteLinkedIn

Location

Ukraine

Posted

153 days ago

Salary

0

Seniority

Senior

Job Description

Senior Front-End Developer

Sigma Software Group

• Design, develop, and maintain scalable front-end applications using ReactJS and GraphQL • Collaborate with UX/UI designers and backend developers to deliver high-quality features • Implement responsive, user-friendly interfaces across devices and browsers • Ensure application performance, security, and scalability • Conduct code reviews and share best practices with the team • Debug and resolve issues efficiently • Contribute to continuous improvement of development processes and tools

Job Requirements

  • 5+ years of professional front-end development experience using ReactJS
  • Strong proficiency in JavaScript (ES6+), TypeScript, HTML5, CSS3
  • Expert knowledge of ReactJS, React Hooks, Context API, and Redux (Redux-Saga optional)
  • Experience with Next.js and GraphQL (Apollo Client or similar)
  • Experience with RESTful APIs and third-party integrations
  • Familiarity with performance optimization and debugging techniques
  • Knowledge of component-based architecture and state management patterns
  • Upper-Intermediate level of spoken and written English
  • Experience with Playwright or other automated testing frameworks (will be a plus)
  • Familiarity with CI/CD pipelines and DevOps practices (will be a plus)
  • Experience with Google Cloud Platform (will be a plus)

Benefits

  • Flexible work arrangements

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