Sr. Specialist, Technical Platform
catalina · Costa Rica · On-site
Posted Jul 9, 2026
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Infillion's Catalina CR team is seeking a client-facing Sr. Technical Platform Specialist well versed in advertising technology to join our Infillion Support team. One of our platforms - MediaMath - handles billions of transactions every hour. Our team is involved in the execution and implementation of some of the most exciting and innovative ad tech products Infillion has to offer.
You will become a subject matter expert on MediaMath and other Infillion platforms, reinforcing best practices for campaign setup, troubleshooting, and issue resolution. As the first line of defense for MediaMath products and campaign issues that users may be experiencing, you will actively manage and resolve Level 1 support cases.
You will:
Troubleshoot and answer all technical questions in a timely matter while providing first class customer service
Support the ongoing set up and maintenance of online advertising campaigns:
Creative trafficking & QA
3rd party tag and tracker set up & QA
Data On-boarding
Product Activation & Assistance
Campaign set up QA & troubleshooting
1st and 3rd party Reporting discrepancies & troubleshooting
Work with product owners to improve and provide quick resolution to product issues
Provide clients and users with proper documentation
Help identify and develop solutions to automate and improve the client’s experience and the teams process
You are:
Personable, solutions-oriented, creative thinker
Comfortable working in a fast-paced, fun, and entrepreneurial environment
Able to communicate well across written and verbal
All about attention to detail and organization
Able to deliver against multiple tasks with excellence
You have:
Bachelor’s Degree (required)
2+ years of experience with online advertising technology and systems (MediaMath, DoubleClick, Xandr, Flashtalking, etc.)
2+ years of experience managing complexities such as online advertising campaign setup, QA, troubleshooting, and resolution
Strong troubleshooting and problem-solving skills
Understanding of RTB, DSP, DMP, and dynamic ad serving fundamentals
Experience with HTML, Python, SQL Scripting, jQuery, CSSS and/or JavaScript
Experience with web debugging tools (Firebug, HTTPFox, Fiddler, Chrome Dev Console, etc.)
Microsoft Excel skills, including pivot tables, VLOOKUP, SUMIF/COUNTIF, and other data analysis formulas
Why We Work at Infillion's Catalina CR
Infillion is the first fully composable advertising platform, built to solve the complexity, waste, and opacity in the digital media ecosystem of the last decade. Born from $750 million in investment and the unification of category-defining technologies, including MediaMath, TrueX, Gimbal, Drawbridge, and most recently Catalina, Infillion engineered these powerful assets into scores of interchangeable, agentic-ready components.
Infillion provides a single, flexible infrastructure that serves media buyers, tech decision-makers, and media sellers. Whether…