Senior Frontend Engineer – Hybrid (Maia, Portugal)

iTRTech Group; Lisboa; Hybrid; EUR 30,000 - 33,000; Full time

Benefits offered by this job

Hybrid work

Job summary

iTRTech Group is hiring a senior Frontend Developer for a hybrid role in Maia, Portugal. You will develop, maintain, and optimize high-traffic web applications, focusing on performance, accessibility, and modern web practices.

The role requires 5+ years, strong HTML/CSS/JS, SSR/CSR, Core Web Vitals, WCAG, Git, automated testing, and proficient use of AI tools. English and Portuguese must be at B2+ level; hybrid work involves 2 days in the Maia office.

Qualifications

• 5+ years of experience developing and maintaining production web frontends.
• Proficient in HTML, CSS, JavaScript, HTTP, and browser fundamentals.
• Strong SSR and CSR understanding.
• Experience optimizing performance for high-traffic sites (Core Web Vitals, Lighthouse).
• Knowledge of WCAG accessibility standards.
• Experience with Git, code reviews, and automated testing.
• Mature use of AI development tools to review/validate AI-generated code.
• English and Portuguese at B2+ level.

Responsibilities

• Develop, maintain, and improve production frontend applications.
• Build responsive, accessible, high-performance user interfaces.
• Optimize website performance using Core Web Vitals and Lighthouse.
• Apply SSR and CSR principles in projects.
• Participate in code reviews, automated testing, and version control processes.
• Use AI-assisted development tools responsibly, reviewing code.
• Collaborate with teams to maintain frontend quality and reliability.

Skills

HTML

CSS

JavaScript

HTTP

Browser Fundamentals

SSR

CSR

Core Web Vitals

Lighthouse

WCAG

Git

Automated Testing

AI-Assisted Development

React

TypeScript

Headless Architecture

E-commerce

SFCC / B2C Commerce / Demandware

SFRA

ISML

SCAPI

Storefront Next

PWA Kit

Composable Storefront

React Native

English B2+

Portuguese B2+

Tools

React

TypeScript

Job description

iTRTech Group is hiring a senior Frontend Developer for a hybrid role in Maia, Portugal. You will develop, maintain, and optimize high-traffic web applications, focusing on performance, accessibility, and modern web practices.

The role requires 5+ years, strong HTML/CSS/JS, SSR/CSR, Core Web Vitals, WCAG, Git, automated testing, and proficient use of AI tools. English and Portuguese must be at B2+ level; hybrid work involves 2 days in the Maia office.