Senior Frontend Engineer: High-Traffic Web Apps (SSR/CSR)

DBServices; Porto; Hybrid; EUR 55,000 - 75,000; Full time

Benefits offered by this job

Collaborative culture

Work from Anywhere

Global connectivity

Health programs

Mental health support

Job summary

DBServices is seeking a Senior Frontend Developer to design, build, and maintain high-traffic web frontends in production. You will focus on performance, accessibility, and resilient client and server rendering strategies, while collaborating with cross-functional teams across Europe and the Americas.

Ideal candidates bring 5+ years of hands-on frontend experience, strong HTML/CSS/JS fundamentals, and a critical eye for AI-assisted code review. A global, flexible work setup is offered.

Qualifications

• 5+ years of professional experience developing and maintaining web frontends in production environments.
• Strong knowledge of HTML, CSS, JavaScript, HTTP, and browser fundamentals.
• Solid understanding of SSR and CSR.
• Hands-on experience with web performance optimization (Core Web Vitals, Lighthouse) and accessibility (WCAG) in high-traffic websites.
• Experience with Git, code reviews, and automated testing.
• Proficiency in using AI-assisted development tools, with the ability to critically evaluate, validate, and improve AI-generated code.

Responsibilities

• Develop, maintain, and optimize web frontends in production environments.
• Ensure high performance, accessibility, and responsiveness across web applications.
• Implement and optimize SSR and CSR strategies.
• Monitor and improve web performance using Core Web Vitals and Lighthouse.
• Follow accessibility standards and best practices, including WCAG.
• Participate in code reviews, automated testing, and continuous improvement of development practices.
• Leverage AI-assisted development tools while critically reviewing and validating generated code.
• Collaborate with cross-functional teams to deliver scalable, maintainable frontend solutions.

Skills

5+ years experience

HTML

CSS

JavaScript

SSR/CSR

WebPerformance

WCAG Accessibility

Git

Automated Testing

AI-assisted development

Tools

Git

Lighthouse

Job description

DBServices is seeking a Senior Frontend Developer to design, build, and maintain high-traffic web frontends in production. You will focus on performance, accessibility, and resilient client and server rendering strategies, while collaborating with cross-functional teams across Europe and the Americas.

Ideal candidates bring 5+ years of hands-on frontend experience, strong HTML/CSS/JS fundamentals, and a critical eye for AI-assisted code review. A global, flexible work setup is offered.