AI-Integrated Front-End Developer

arsys EN; Alcobendas; Hybrid; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Fixed salary with benefits

Health insurance

Daycare allowance

Meal vouchers

Flexible working hours

Hybrid work in Madrid/Logroño/Barna/Se

Valencia office

Company events twice a year

Personalized training & certifications

Employee discounts

Job summary

Arsys is seeking an experienced frontend engineer to join our Madrid-area teams, delivering AI-enhanced web solutions and high-performance rendering across DOM and Canvas.

You will collaborate with a multicultural team, ensure clean architecture, and drive features from concept to production while communicating in English daily.

The role offers hybrid working across Madrid, Logroño, Barcelona, Seville or Valencia with ongoing professional training and opportunities to attend company events.

Qualifications

• AI as a daily development multiplier with strong technical judgment.
• Fluent English for daily technical communication.
• Experience debugging complex legacy code and performing non-linear investigations.

Responsibilities

• Identify and fix performance bottlenecks across DOM and Canvas surfaces.
• Continuously refine features based on production usage and edge cases.
• Trace and resolve complex issues across large, partially undocumented codebases.
• Utilize AI across workflows to accelerate implementation and maintain real-time documentation.

Skills

AI-driven development

English fluency

Debugging & legacy navigation

Tools

Canvas

WebGL

Job description

We offer you the opportunity to join the leading Spanish company in the IT sector, with more than 25 years of experience and one of the most solid track records as a provider of technological solutions for companies.

We are a growing company with more than 400 employees and offices in Logroño, Madrid, Barcelona, Seville and Valencia.

Since August 2013, we have been part of the IONOS Group, Europe's leading digitalisation partner for small and medium-sized companies.

In short, we are a multicultural team that’s passionate about technology, bringing our professional experience from over a dozen countries: Germany, Argentina, Spain, the United States, France, the Philippines, Italy, Poland, Portugal, the United Kingdom, Romania...

Key Responsibilities

Rendering & Loading Performance: Identify and fix performance bottlenecks (TTI, load time, unnecessary re-renders, bundle bloat) across DOM and Canvas surfaces.

Feature Refinement: Continuously sharpen shipped features based on production usage patterns and real-world edge cases.

Bug Research: Trace and resolve complex, non-obvious issues across large and partially undocumented codebases.

AI Integration: Utilize AI across all workflows to accelerate implementation, analyze logs/traces, and maintain real-time documentation.

Core Requirements

AI-First Orchestration: Demonstrated experience using AI as an everyday development multiplier. You let AI handle the initial pass while you bring the technical judgment, validation, and architectural rigor.

English Fluency: English domain for daily technical communication and team collaboration.

Debugging & Legacy Navigation: Comfort working with complex, legacy code and pursuing non-linear bug investigations to resolution.

Bonus: Familiarity with Canvas or WebGL.

• Fixed salary and flexible benefits such as health insurance, daycare allowance, and meal vouchers.
• Flexible working hours to organize your schedule according to your needs.
• Ability to work hybrid in any of our offices located in Logroño, Madrid, Barcelona, Seville or Valencia.
• Invitation to our Arsys events, held twice a year, where we team build and throw a great party for our employees.
• Personalized training in cutting-edge technologies, certifications, or any area that interests you.
• Various employee discounts for activities and products.
• We have a motivated, innovative team that is continuously learning. A culture where your opinion and initiative matter. We want to hear your ideas and see you put them into practice.

At Arsys we value diversity and welcome all applications regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age, as well as sexual orientation and identity, physical characteristics, marital status or any other irrelevant factor subject to applicable law.