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Staff Machine Learning Engineer, Ads Creative Effectiveness

Reddit· Ads Product & Engineering
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Remote$230k - $322kFull-timePosted 2w ago

About the role

Staff-level machine learning engineer role focusing on GenAI-powered ad creative generation, editing, and safety at Reddit. Remote (United States).

Responsibilities

  • Advanced Generative Workflows: Architect and implement state-of-the-art pipelines for ad creative generation with product, font, logo and brand asset preservation using techniques like IP-Adapters and LoRAs.
  • End-to-End Image & Video Editing: Build editing capabilities for smart-crop, inpaint, outpaint, resize, and style-transfer while maintaining brand guidelines.
  • LLM/VLM Fine-Tuning: Adapt large vision-language models and build feedback loops using ad performance metrics (CTR, CVR) to fine-tune generation (RLHF/RLPF for Ads).
  • Safety & Compliance Layer: engineer robust filtering and safety systems to prevent non-compliant, unsafe, or copyright-infringing content.
  • Partner Broadly: Collaborate with Product, Sales, Policy, UX, and Ads ML teams to integrate ACE capabilities into the Ad Manager UI and ad delivery path.
  • Guardrails & Safety: Embed brand-safety filters, copyright checks, and human-in-the-loop escalation paths.

Qualifications

  • Deep ML Expertise: Hands-on experience with tree models, neural nets, ranking, and especially LLM/VLM fine-tuning & RLHF/RLPF for ads.
  • Quant & Experimentation Chops: Comfort with uplift metrics, variance, minimum detectable effects and experimentation setups for generative systems.
  • Ads / Marketplace Insight: Understanding auction dynamics and advertiser pain points to drive revenue and retention.
  • Startup Mindset: Bias to action, comfort with ambiguity, scrappiness; ACE evolved from a startup acquisition and moves fast.
  • Communication Superpowers: Ability to distill complex ML trade-offs for executives, product managers, and non-technical stakeholders.
  • Prior work on ad creative tooling: Headline generators, image generators, pre-test models, editing flows for advertisers.

Skills

Required:Generative AI and GenAI pipelinesImage & Video editingLLM/VLM fine-tuning and RLHF/RLPFSafety and copyright enforcementExperimentation and metricsAd tech / marketplace insightCommunication

Benefits

  • Comprehensive Healthcare Benefits and Income Replacement Programs
  • 401k with Employer Match
  • Global Benefit programs covering workspace, professional development, caregiving support
  • Family Planning Support
  • Gender-Affirming Care
  • Mental Health & Coaching Benefits
  • Flexible Vacation & Paid Volunteer Time Off
  • Generous Paid Parental Leave
Last updated Oct 7, 2026. Interested? Apply on the company site.
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