Senior Frontend Engineer (React/React Native)

About the role

Perkbox, an employee experience platform offering wellbeing, benefits and recognition solutions, is growing its Bulgaria-based team and hiring a Senior Frontend Engineer. The role is fully remote within Bulgaria, with an option to work hybrid from the Plovdiv office. You will design and deliver scalable, high-performance user interfaces for a platform serving millions of users, while helping drive frontend best practices, performance, accessibility and consistency.

Key responsibilities

• Develop and maintain responsive user-facing features using React.js, React Native and TypeScript
• Translate wireframes and design prototypes into high-quality, reusable code
• Build and maintain modular frontend components and libraries
• Collaborate on frontend solutions across web and mobile applications
• Manage complex data flows with Apollo and modern state management practices
• Leverage AI-assisted development tools and emerging technologies
• Optimise applications for performance across browsers, devices and screen sizes
• Write clean, testable code, including unit and UI integration tests
• Work with backend engineers, take part in sprint planning, code reviews and agile ceremonies, and fix performance issues and bugs

Required profile

• 4+ years of commercial experience building frontend applications with React
• 1+ year of React Native experience, backed by a strong React and TypeScript foundation
• Experience building reusable components and frontend libraries, and turning designs and wireframes into polished user experiences
• Experience with frontend performance optimisation and Git workflows

Required skills

• JavaScript, TypeScript, HTML and CSS
• Apollo or similar state and data management solutions
• Broad understanding of modern web architectures and best practices
• Exposure to AI-enabled development tools

What we offer

• Gross annual salary of EUR 50,000 to EUR 56,000 depending on experience
• Fully remote work within Bulgaria, with a Plovdiv office available for hybrid work