Machine Learning Engineer, Trust & Safety

Hinge is the dating app designed to be deleted

In today's digital world, finding genuine relationships is tougher than ever. At Hinge, we’re on a mission to inspire intimate connection to create a less lonely world. We’re obsessed with understanding our users’ behaviors to help them find love, and our success is defined by one simple metric— setting up great dates. With millions of users across the globe, we’ve become the most trusted way to find a relationship, for all.

About the Role

Join Hinge as a Machine Learning Engineer on the Trust & Safety team, where you'll apply AI and machine learning to mitigate the impact of policy violating actors, remove harmful content, and keep our users safe on the platform. Working alongside an established Trust & Safety AI team, you'll partner with product managers, data scientists, engineers, and analysts to build, deploy, and improve detection systems that have a direct, measurable impact on user safety.

This is a high-ownership IC role on a small team with a large mission. You'll own the end-to-end lifecycle of ML projects, contribute to a growing portfolio of AI-powered safety features, and grow alongside senior engineers, all while playing a foundational role in how Hinge applies machine learning to give users a safer experience on their journey to find intimate connection.

• Build, deploy, and maintain end-to-end machine learning models that detect policy violating actors, remove harmful content, and keep users safe.
• Own medium-sized projects end-to-end (from problem scoping and data collection to training, deployment, monitoring, and iteration).
• Contribute to scalable inference and data pipelines (e.g., Spark, Kubernetes), including preprocessing, batch and real-time inference, and post-processing components.
• Apply standardized performance metrics, testing protocols, and evaluation processes to measure model effectiveness and identify risks.
• Continuously assess and refine deployed models using user feedback, business impact signals, and emerging policy and ethical considerations.
• Collaborate closely with Data Scientists, Data Engineers, Product Managers, Backend Engineers, and the AI Platform team to ship coordinated user safety improvements.
• Stay current on advances in AI/ML, particularly LLMs and evaluation methods, and apply appropriate techniques to detection and user safety problems.

• Strong programming skills:
  Proficiency in Python and SQL, comfort with at least one ML stack (e.g., PyTorch, Hugging Face Transformers), and a working understanding of data pipelines.
• Domain expertise:
  Solid understanding of machine learning, deep learning, and emerging AI techniques. Track record of building, debugging, and fine-tuning ML models for user-facing products. Experience with content classification, fraud detection, or related Trust & Safety problems is a plus.
• System design & architecture:
  Experience training and deploying ML models in production. Working understanding of distributed computing for inference and training.
• AI application:
  Hands‑on with AI agents, RAG, structured outputs, and function/tool calling. Understands when to reach for an agent or LLM vs. a classical ML approach.
• Evaluation frameworks for ML and LLM systems:
  Comfort designing and running evaluations to measure model effectiveness, fairness, and safety across both classical ML and LLM systems. Familiar with golden datasets, LLM‑as‑judge patterns, precision/recall/F1, false positive rates, hallucination, and offline/online metrics.
• Cloud and data platform proficiency:
  Hands‑on with at least one cloud environment (GCP, AWS, or Azure). Familiarity with Databricks, Ray, or Kubeflow is a plus.
• Data engineering knowledge:
  Comfortable handling large datasets, including cleaning, preprocessing, and storage, and contributing to batch and streaming pipelines orchestrated with tools like Databricks or Argo.
• Project ownership:
  Demonstrated ability to drive medium‑sized projects to completion, identify and unblock yourself on technical issues, and ship measurable outcomes with limited oversight.
• Collaboration and communication skills:
  The ability to work effectively in a…