Smadex SLU

Creative QA Specialist

Barcelona, Spain - Full Time

Smadex is a leading advertising technology company founded in Barcelona in 2010 and sold to American-based and stock-listed Entravision in 2018 (NYSE::EVC). We power campaigns for Apps, Games and Brands across Mobile and CTV using advanced machine learning and optimized creative strategies to deliver results. Smadex is one of the fastest growing DSPs and we are adding talent to fuel our ambitious plans for 2026 and beyond.

We are seeking a Creative QA Specialist to safeguard the technical excellence and visual integrity of our digital advertising portfolio. In this role, you will serve as the final checkpoint for interactive "Playable" units, providing first-line support for creative production. Your mission is to eliminate user friction and ensure 100% technical compliance prior to campaign launch.

The Ideal Candidate: You are a hybrid of a technical analyst and a visual perfectionist. You enjoy the challenge of making complex interactive ads work flawlessly across every screen.
 

Core Responsibilities

1. Technical Creative Support & QA

  • Bug Lifecycle Management: Identify, document, and track creative defects. Provide developers with precise reproduction steps and technical logs.
  • Performance Monitoring: Audit load times and file weights to ensure assets meet strict publisher specs without sacrificing visual quality.
  • Creative Consultation: Partner with designers to provide UI/UX feedback specifically tailored for interactive units.

2. Mobile Playables, Video & CTV Campaigns

  • Functional Testing: Execute end-to-end testing of HTML5 playable units. Verify gameplay logic, win/loss states, and CTA mapping.
  • Cross-Environment Validation: Ensure seamless performance across a fragmented landscape of mobile devices (iOS/Android), OS versions, and desktop browsers.
  • CTV Compliance: Audit Connected TV video assets for bitrate stability, VAST wrapper compatibility, and adherence to "safe zone" UI constraints for 10-foot viewing experiences.
  • Tag & Tracker Verification: Confirm that tracking pixels and event triggers (MRAID, VAST) fire accurately to guarantee clean data reporting.

Requirements & Skills

  • An obsessive eye for detail—noticing 1px misalignments or animation microstutters.
  • Familiarity with HTML/CSS/JS and how they render within mobile WebViews.
  • The ability to not just identify a bug, but investigate the "why" behind it.
  • Proficient with Browser DevTools, device simulators, and Jira/Asana.
  • Deep understanding of digital ad formats (Display, Video, Playable) and mobile constraints.

Benefit package: 

  • Integrate a highly motivated and young team.
  • Great compensation package.
  • Top location at the heart of Barcelona in a penthouse office with a rooftop terrace, barbeque, and a fully stocked fridge.
  • Work from home: 2 days/week
  • Private Health Insurance
  • Access to LinkedIn Learning
  • Meal vouchers - Tickets Restaurant monthly allowance.
  • Monthly gym allowance: Choose between DiR Gym and Wellhub
  • Regular team-building events.
  • Fun and friendly work environment with talented marketers and engineers from over 40+ countries
  • And more!
Please note that we do not provide visa sponsorship. Candidates without a legal permit to work in Spain won't be considered. 
Apply: Creative QA Specialist
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