Web Developer (Intern) at Refinery89 | AdTechTalent
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Refinery89
Web Developer (Intern)
internship web development HTML CSS JavaScript browser developer tools technical troubleshooting programmatic advertising advertising technology publisher support technical account management data analysis Google Ad Manager Prebid SSPs APIs reporting
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Join Refinery89 and work on a role built for experienced AdTech operators.
Full job description Refinery89 is seeking a Web Developer Intern for their Publisher Success team in Madrid. This onsite internship is for students or early career candidates with foundational knowledge in HTML, CSS, and JavaScript. The role involves supporting technical troubleshooting, website integrations, data analysis, and advertising technology for publisher websites. Responsibilities include investigating technical issues using browser developer tools, supporting advertising integrations, monitoring website performance, interpreting advertising metrics, and communicating technical findings clearly. No prior AdTech experience is required; training will be provided. Candidates must have fluent English (C1/C2), strong problem-solving skills, technical curiosity, and legal eligibility to complete an internship in Spain. The internship offers practical experience with web technologies, programmatic advertising tools, and technical account management in a client-facing environment.
What you'll do Support investigation of technical issues affecting publisher websites Use browser developer tools to inspect HTML, CSS, JavaScript, scripts, network activity, and browser errors Similar jobs
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Identify issues related to page structure, styling, scripts, advertising tags, or website configuration
Reproduce technical problems and investigate causes
Review browser console errors and network requests
Gather technical information before escalating complex problems
Work with HTML, CSS, and JavaScript on real publisher websites
Investigate interactions of scripts and third party technologies with webpages
Support implementation and validation of advertising website integrations
Review website configurations and identify technical issues
Support monitoring of publisher websites and identify unusual behavior
Perform regular technical health checks
Investigate changes affecting advertising delivery
Interpret advertising metrics such as CPM, RPM, fill rate, impressions, and revenue
Support investigations into technical, commercial, or traffic-related issues
Use data to support technical investigations
Create clear technical handoffs with screenshots, URLs, and descriptions
Explain technical findings in simple language
Communicate with publishers in English about technical issues and resolutions
Collaborate with Technical Account Managers, developers, advertising specialists, and internal teams Requirements Fluent professional English (C1/C2) Practical knowledge of HTML, CSS, and JavaScript Basic understanding of website structure and front end technologies Experience using browser developer tools Strong technical curiosity and problem solving skills Comfort investigating unfamiliar technical problems Clear written and verbal communication Basic numeracy and confidence working with percentages and data Reliability and attention to detail Eagerness to learn Confidence to investigate unknown issues Legal eligibility to complete an internship in Spain Enrollment in an educational program or eligibility for internship agreement Tech stack HTML CSS JavaScript browser developer tools APIs Google Ad Manager Prebid SSPs advertising tags reporting platforms spreadsheets Git GitHub
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Company
Refinery89 Refinery89 is a Google Certified Publishing Partner and member of IAB Europe's Transparency and Consent Framework driven to revolutionize AdTech. As the #1 Publisher Network in Europe and Latam, we help Publishers monetize their websites in the easiest way possible with our premium solutions specially designed to maximize ad revenue. On top of that, we count on a Brands & Agencies team to further increase Publishers’ ad inventory value and optimize Advertiser’s ad campaigns with a Brandformance approach to achieve the best results! Born from Dutch roots and headquartered in sunny Madrid, Refinery89 has grown into a global team of passionate professionals of over 20 different nationalities prepared to give Publishers and Advertisers personalized attention every step of the way. Let's work together to bring in fantastic results! Meet our award-winning solutions: - Single Tag (Connect your website to over 25+ premium demand sources to maximize ad revenue): https://refinery89.com/single-tag-revenue-growth/ - Monetize App SDK (Access premium demand to monetize your app's ad space without breaking your head in the installation process): https://refinery89.com/monetize-app-sdk/ - Brand Building Outcome: Our new Brandformance solution for advertisers and media agencies that bridges the gap between awareness and performance. - Interest Driven Targeting Technology (Advertiser's new best friend for cookieless targeting): https://refinery89.com/advertisers/ Ready to step up your ad game? Reach out to us: https://refinery89.com/contact-us/ #Refinery89 #ForPublishersByPublishers #ProgrammaticAdvertising #AdTech
Industry
Advertising Services
Website
http://www.refinery89.com
Posted
Yesterday
Category: Programmatic
New York, US • 5 months ago
product management CTV programmatic
