Senior Front End Engineer- Mobile & Web

At Quento Technologies S.A., the ICT arm of the Qualco Group, we deliver comprehensive and innovative solutions across AI, Digital Engineering, Cloud, and Cybersecurity, helping businesses accelerate digital transformation. With a presence in Greece, Luxembourg, and Belgium, and backed by the expertise of the Qualco Group, we combine deep technical knowledge with strategic partnerships to support business growth.

At Quento Technologies S.A. we empower our people to innovate and lead in delivering transformative ICT solutions to our clients worldwide. Quento Technologies S.A. seeks a highly motivated and experienced Senior Frontend Engineer to build and maintain high-quality web and mobile applications. You will work across iOS, Android, and Web, contributing to production-grade applications and delivering seamless user experiences.

This role is ideal for someone experienced in modern frontend development, mobile deployment processes, and cross-platform debugging, with a strong focus on code quality and performance.

Your responsibilities will entail:

• Develop and maintain web applications using React
• Build and ship production-ready mobile applications using React Native
• Manage mobile app deployment for iOS and Android, including build, signing, and store submission
• Integrate applications with REST APIs
• Implement responsive design for multiple screen sizes and devices
• Handle push notifications, deep linking, and app permissions
• Participate in code reviews before every merge
• Debug issues across web, iOS, and Android platforms
• Collaborate with cross-functional teams including backend, product, and design
• Manage application state using appropriate state management solutions