Senior Frontend Developer (TeamCity)

TL;DR

Senior Frontend Developer (TeamCity): Develop and enhance frontend features for TeamCity's CI/CD platform with an accent on complex UI challenges and performance optimization. Focus on designing scalable frontend architecture, improving real-time UI responsiveness, and collaborating closely with UI/UX designers.

Location: Onsite in Belgrade, Serbia; Berlin, Germany; Limassol, Cyprus; Munich, Germany; Paphos, Cyprus; Prague, Czech Republic; Warsaw, Poland; Yerevan, Armenia

Company

hirify.global builds developer tools including TeamCity, a widely used CI/CD platform trusted by over 30,000 organizations worldwide.

What you will do

• Develop new frontend features and maintain legacy code for TeamCity.
• Improve performance and responsiveness of real-time UI with large datasets.
• Participate in frontend architecture decisions and system evolution.
• Collaborate closely with UI/UX designers to enhance user experience.
• Write tests and ensure code quality.
• Contribute actively to team discussions and decision-making.

Requirements

• Location: Must be onsite in one of the specified European cities
• Proficient in TypeScript, HTML5, CSS3, React, and JavaScript internals.
• Strong understanding of performance optimization at component and architectural levels.
• Good grasp of testing principles and best practices.
• Foundational knowledge of algorithms and complexity.
• Clear communication skills in English (written and verbal).

Nice to have

• Experience with extensible frontend systems or plugin-based architectures.
• Familiarity with React internals and design delivery processes.
• Passion for shaping product direction beyond feature delivery.
• Strong interpersonal skills and experience in high-performing teams.

Culture & Benefits

• Work on a mature, widely used CI/CD platform with a modern tech stack.
• Collaborative team environment with active discussions and decision-making.
• Opportunity to influence frontend architecture and product evolution.