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Whatnot Logo Whatnot · IT - Software Development

Software Engineer, Performance Marketing

United States, Seattle, WA 170000.00 - 230000.00 USD / Year · Job Posted February 18, 2026
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Job Description

We’re looking for a Software Development Engineer who lives at the intersection of engineering, growth, and paid media. You’ll build and own the systems that power performance marketing across channels like Google Paid Search, Meta Ads, TikTok Ads, Product Listing Ads, and attribution platforms such as AppsFlyer.

Job Responsibility

  • Build and maintain data pipelines that ingest, normalize, and validate marketing data from platforms like Google Ads, Meta, TikTok, PLA feeds, and AppsFlyer
  • Create automation tools for bidding, budget pacing, creative rotation, and campaign experimentation
  • Implement attribution/tracking logic (MMP, SKAN, postbacks, conversion windows, deduplication, incrementality)
  • Partner closely with Growth, Marketing, and Data teams to turn hypotheses into shippable systems

Requirements

  • 5+ years of experience as a Software Development Engineer (or equivalent)
  • Hands-on experience supporting performance marketing
  • Strong understanding of paid media platforms: Google Ads (Paid Search, Shopping / PLA), Meta Ads, TikTok Ads
  • Practical experience with AppsFlyer (or similar MMP like Adjust / Branch)
  • Solid grasp of: Attribution models (last click, MTA, SKAN, probabilistic vs deterministic), Conversion tracking and event schemas, Campaign structure and optimization levers
  • Strong backend skills (e.g. Python, Java, Go, or similar)
  • Experience with data systems (SQL, warehouses, ETL/ELT, streaming is a plus)

Nice to have

  • Experience with SKAdNetwork, Privacy Sandbox, or ATT impacts
  • Feed management for PLAs (catalogs, pricing, availability, disapprovals)
  • Experimentation frameworks (A/B testing, lift studies)
  • Experience working at a consumer app, marketplace, or e-commerce company

What we offer

  • Flexible Time off Policy and Company-wide Holidays (including a spring and winter break)
  • Health Insurance options including Medical, Dental, Vision
  • Work From Home Support
  • Home office setup allowance
  • Monthly allowance for cell phone and internet
  • Care benefits
  • Monthly allowance for wellness
  • Annual allowance towards Childcare
  • Lifetime benefit for family planning, such as adoption or fertility expenses
  • Retirement
  • 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally
  • Monthly allowance to dogfood the app
  • Parental Leave: 16 weeks of paid parental leave + one month gradual return to work
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