Frontend Developer

Gbl Tech; Porto; On-site; EUR 40,000 - 56,000; Full time

Job summary

GBL Tech is seeking a Frontend Developer to evolve and enhance modern web portals with a strong UI/UX focus. You will work on frontend development, usability improvements, and ongoing product evolution to deliver intuitive and performant digital experiences.

The role requires at least 3 years of frontend experience, solid HTML5/CSS3/JS skills, and fluency in English, with a focus on responsive, accessible interfaces and reliable performance across platforms.

Qualifications

• 3+ years of frontend web development experience.
• Strong knowledge of HTML5, CSS3 and JavaScript.

Responsibilities

• Develop and enhance web interfaces using HTML5, CSS3 and JavaScript.
• Improve usability and visual consistency of digital portals and UI/UX.
• Maintain frontend components across web platforms.
• Monitor, investigate and resolve UI/UX issues.
• Identify opportunities to improve frontend performance and usability.

Skills

Frontend web dev

HTML5

CSS3

JavaScript

UI/UX mind

Troubleshooting

English fluency

Job description

At GBL Tech, we drive high-impact technology careers through specialization and scale. We operate across critical digital ecosystems — from Fintech to Smart Industry — connecting talent with technically challenging projects and modern stacks.

The Role

We're looking for a Frontend Developer with a strong eye for UI/UX to help evolve and enhance modern web portals. This role combines frontend development, user experience optimisation, and continuous improvement, offering the opportunity to create intuitive, engaging, and visually appealing digital experiences while ensuring the reliability and performance of existing platforms.

Your Mission:

Frontend Development: Develop and enhance web interfaces using HTML5, CSS3, and JavaScript, ensuring responsive, accessible, and high-quality user experiences.

UI/UX Evolution: Contribute creative ideas and innovative solutions to improve the usability, design, and overall experience of digital portals, keeping up with emerging web technologies and design trends.

Platform Maintenance: Ensure the stability, consistency, and correct functioning of existing frontend components and user interfaces across web platforms.

Incident Management: Monitor, investigate, and resolve UI/UX-related issues, ensuring a smooth and reliable experience for end users.

Continuous Improvement: Identify opportunities to optimise frontend performance, usability, and visual consistency while contributing to the ongoing evolution of digital products.

What We Are Looking For:

Frontend Expertise: At least 3 years of professional experience in frontend web development, with a solid understanding of modern web technologies.

Technical Skills: Strong knowledge of HTML5, CSS3, and JavaScript, with the ability to build and maintain responsive web interfaces.

UI/UX Mindset: Creativity, attention to detail, and an interest in improving digital experiences through usability, visual consistency, and modern design practices.

Troubleshooting: Ability to identify, analyse, and resolve frontend issues while ensuring the quality and reliability of web platforms.

Communication: Fluency in English, both written and spoken.