Bumble

Principal Machine Learning Engineer, Matching & Recommendations

Bumble
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14 hours ago

Base Salary

$345k - $410k/yr

Responsibilities

  • Define and lead the technical strategy for AI and machine learning systems supporting recommendations, ranking, personalization, engagement, and safety.
  • Design, develop, and deploy scalable production models using frameworks such as PyTorch.
  • Build and deploy production AI agents using raw and fine-tuned large language models, sub-agents, tools, and MCP integrations.
  • Architect end-to-end ML pipelines covering data processing, model training, evaluation, and deployment using tools such as Spark and Airflow.
  • Drive experimentation frameworks, including A/B testing and offline evaluation, to improve model and product outcomes.
  • Partner with Product, Engineering, Data Science, and Analytics leadership to translate business challenges into scalable ML solutions.
  • Mentor senior individual contributors and raise ML engineering standards across the organization.
  • Own complex, ambiguous initiatives from insight through impact while championing responsible AI, fairness, transparency, and user safety.

Requirements

  • Typically 10–15 years of experience, with equivalent skills from alternative backgrounds also considered.
  • Deep machine learning expertise and hands-on experience building and deploying large-scale production systems.
  • Strong Python proficiency and experience with at least one major ML framework, such as PyTorch or TensorFlow.
  • Experience with recommendation systems, ranking models, or NLP.
  • Expertise in prompting and fine-tuning large language models and building production AI agents.
  • Experience designing scalable data and ML pipelines with Spark, Airflow, or similar distributed systems.
  • Ability to operate as a senior individual contributor and influence technical strategy without direct authority.
  • Experience collaborating across functions, owning outcomes in complex environments, and mentoring or uplifting others.
  • Strong AI fluency, including the ability to design, evaluate, optimize, and guide responsible application of ML systems.

Tech Stack

Apache AirflowApache SparkPythonPyTorchTensorFlow
Bumble

About Bumble

1,001-5,000 employees

Bumble Inc. builds consumer social apps for dating and friendship, including Bumble Date, BFF, and Badoo. The company runs a freemium business with subscriptions and in‑app purchases, and is publicly traded on Nasdaq as BMBL; founded in 2014 by Whitney Wolfe Herd, it is headquartered in Austin, Texas and serves a global user base.

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