**WHO WE ARE:** Quartile, the world's largest retail media optimization platform, is a trusted partner for multichannel e\-commerce success. Through unmatched expertise and patented AI technology, we fuel growth for 5,300\+ brands and sellers worldwide and manage an annual ad spend exceeding $2 billion. The award\-winning platform covers major marketplaces and ad channels for optimal reach. The result is unprecedented granularity, smarter budgeting, and bespoke solutions for retailers. Quartile is proud to be an equal opportunity employer with employees stemming from a wide range of backgrounds and experiences. As a business, we value the enrichment that diversity brings to our organization and are committed to a culture that creates a sense of inclusion and belonging. We welcome new perspectives and affirm that all employment decisions are made without regard to race, color, ancestry, religion, national origin, age, familial or marital status, sex, sexual orientation, pregnancy, gender identity or expression, disability, genetic information, veteran status, or any other classification protected by federal, state, or local law. **OVERVIEW:** The SEM Strategist is accountable for strategy, execution, and account stewardship across the full SEM ecosystem, Google and Microsoft Advertising included where relevant to the client's channel mix. The role translates client objectives related to revenue, profitability, acquisition, and growth into integrated channel strategies, media plans, and structured testing roadmaps. This is a high\-impact individual contributor role requiring a highly proactive, organized, and resilient professional who demonstrates sound judgment, learns quickly, and operates effectively in a high\-growth environment where priorities, processes, and technology evolve rapidly. **REQUIREMENTS:** * Performance orientation. A performance\-oriented mindset and the ability to connect daily decisions and media activity to client objectives and commercial outcomes. * Analytical rigor. Demonstrated analytical reasoning and learning agility; ability to investigate performance changes, isolate root causes, and test hypotheses. * Proactivity and ownership. Demonstrated proactivity, commitment, organization, determination, and reliability; consistent record of ownership and follow\-through across multiple priorities. * Adaptability. Open and adaptable approach to working in a high\-growth environment where priorities, tools, processes, and responsibilities evolve rapidly. * Communication. Clear, professional, and consultative written and verbal communication skills; **professional fluency in English.** * Continuous learning. Strong commitment to continuous learning and improvement; intellectual curiosity and initiative are valued more highly than complete technical mastery at hire. * Relevant context (preferred). Experience in SEM, performance media, ecommerce, or digital marketing; experience with Google Ads, analytics platforms, or advertising technology is a plus. **WHAT YOU’LL DO:** * Strategy and planning. Translate client objectives (revenue, profitability, acquisition, growth) into channel strategies, media plans, budget recommendations, and structured testing roadmaps; validate assumptions and update plans as performance data emerges. * Campaign development and execution. Able to follow a playbook, develop and manage campaigns across the complete SEM portfolio (Search, Shopping, Performance Max, Display, Demand Gen, Video/YouTube, App campaigns) and Microsoft Advertising where in scope; maintain/develop expert\-level platform knowledge. * Account ownership and commitment. Maintain clear ownership of assigned accounts, consistently meeting commitments and proactively identifying risks, opportunities, and required actions; ensure accurate and timely records in Salesforce, Planner, and internal workflows. * Performance monitoring and optimization. Monitor budget pacing, media investment, revenue, ROAS, CPA/CAC, conversion rate, margin, and agreed client KPIs; investigate material changes and implement appropriate corrective actions; evaluate queries, audiences, products, brands, categories, and creative performance to identify opportunities for efficient growth. * Testing and validation. Design and evaluate structured tests across campaign types, account architecture, bidding, audiences, creative assets, promotions, and landing pages; document hypotheses, findings, and recommendations. * Feed and product quality. Support Google Merchant Center and product\-feed health, including disapprovals, attribute gaps, catalog segmentation, and opportunities to improve product listings; conduct troubleshooting before escalation. * Analytics and insights. Prepare accurate reports, account health assessments, media plans, strategy presentations, and QBR materials that translate complex data into concise, actionable recommendations; apply AI\-enabled tools to improve analysis quality while exercising sound judgmen