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Middle frontend (react/next) developer

Madfish

Madfish

Software Engineering
Ukraine · Europe
Posted on Dec 4, 2025

About Us:

LineUp is a dynamic and innovative company dedicated to delivering cutting-edge solutions to our clients. We pride ourselves on our commitment to excellence, teamwork, and adaptability. As we continue to grow and expand our portfolio, we are seeking a talented Middle Frontend Developer to join our team.

Key Responsibilities:

  • Develop and maintain complex frontend applications using React and Next.js.
  • Collaborate closely with stakeholders and other developers to understand business requirements, translate them into high-quality technical solutions that meet those needs.
  • Utilize state management tools like Zustand or similar, and efficiently integrate with backend services using TanStack (React Query) or other data-fetching libraries.
  • Maintain CI/CD pipelines using GitLab runners and manage deployment processes with Docker (build and push to registry).
  • Ensure UI/UX consistency by utilizing component libraries such as PrimeReact or similar, building reusable components.
  • Troubleshoot, debug, and optimize frontend code to enhance performance and maintainability.
  • Contribute to the agile development process by participating in scrum events, and driving towards a cross-functional, collaborative work environment.
  • Stay up-to-date with the latest frontend technologies and best practices, fostering a mindset of continuous learning and development. Maintain a high-level engineering culture within the team.

Qualifications:

  • Minimum of 3 years of experience in frontend development with a focus on React, Next.js, and related technologies.
  • Familiarity with state management libraries (e.g., Zustand) and data-fetching solutions like TanStack (React Query).
  • Understanding of frontend build tools, CI/CD pipelines, and containerization with Docker.
  • Experience with component libraries such as PrimeReact or similar, and a working knowledge of React hooks.
  • Ability to document frontend designs and processes clearly.
  • Strong problem-solving skills and attention to detail, with a drive to create high-quality, performant code.
  • Ability to work both independently and as part of a team in an agile environment.
  • Good communication skills, with the ability to interact professionally with team members and stakeholders.
  • English at Upper-Intermediate level and above.

What We Offer:

  • Competitive salary.
  • A collaborative and innovative work environment.
  • Professional development opportunities.
  • The chance to work on exciting and challenging projects.
  • A supportive company culture.