Cro Frontend Developer

November 4, 2026

Hybrid

Junior

Barcelona, Spain

Keep in mind

Original vacancy is in Spanish
You will likely need Spanish for the job. The employer can confirm

Also worth knowing

English is required

Description

A leading communications group in Spain and part of a global network of over 71,000 specialists across 120 countries is hiring a CRO Frontend Developer for its creative agency in Barcelona. The role focuses on implementing A/B and multivariate tests and personalized experiences on digital channels using Adobe Target. The person will work with CRO, Product, UX and Analytics teams to identify data-driven optimization opportunities.

Responsibilities

Implement A/B tests, multivariate tests and personalization experiences using Adobe Target
Develop and adapt front-end components for experiments using JavaScript, HTML and CSS
Validate and ensure the correct execution of experiments across different devices and browsers
Collaborate on the analysis of results and the identification of optimization opportunities
Support the definition and validation of measurement and tracking of experiments
Document learnings and contribute to the continuous improvement of experimentation processes

Requirements

Experience in CRO (Conversion Rate Optimization) initiatives
Experience with Adobe Target or similar experimentation and personalization platforms
Knowledge of JavaScript, HTML and CSS
Familiarity with digital analytics tools such as Adobe Analytics or GA4
Interest in experimentation, data analysis and optimization of digital experiences
Fluent level of English and Spanish

Conditions

Full-time permanent contract
26 vacation days, 3 Wellness Days, a day off on your birthday, and days off on 24 and 31 December if they fall on a working day
Flexible schedule
Intensive summer schedule from 15 June to 15 September
Hybrid remote work policy
Professional development through the Dentsu University platform
Attractive compensation package
Access to the flexible compensation system (medical insurance, restaurant tickets, transport card, nursery cheque, specific training)
Employee Assistance Program
2 volunteering days in line with the corporate social responsibility commitment
Top Employer accreditation in 2024, 2025 and 2026 and Happy Trainees certification in 2025 and 2026