Bumble

Principal Machine Learning Engineer, Matching and Recommendations

Bumble$150K — $180K *
Consumer Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • 10-15 years of experience in machine learning and AI-related roles preferred, but alternative relevant backgrounds are considered.
  • Deep expertise in building and deploying large-scale machine learning systems in production environments.
  • Proficient in Python and at least one major ML framework (like PyTorch or TensorFlow).
  • Strong experience with recommendation systems, ranking models, and natural language processing (NLP).
  • Expertise in working with Large Language Models and building production AI Agents.
  • Proven capability in designing and implementing scalable ML pipelines using tools like Spark or Airflow.
  • Demonstrated ability to influence technical strategy without direct authority.

Responsibilities

  • Define and lead the technical strategy for AI and machine learning systems.
  • Design and deploy production-grade models using modern ML frameworks to enhance user engagement.
  • Build and deploy production AI Agents utilizing foundational Large Language Models and associated tools.
  • Architect end-to-end ML pipelines, integrating data processing with model training and deployment.
  • Drive experimentation frameworks such as A/B testing to enhance model performance and product outcomes.
  • Collaborate cross-functionally to address business challenges through ML solutions.
  • Mentor senior contributors and foster a culture of learning within the ML community.
  • Champion responsible AI practices focusing on fairness, transparency, and user safety.

Benefits

  • Opportunity to lead impactful AI initiatives that enhance user engagement and safety.
  • Collaborative work environment with cross-functional partners including Product and Engineering teams.
  • Focus on continuous learning and mentoring within a high-performing ML community.
  • Involvement in shaping technical strategy and influencing senior stakeholders.
  • Commitment to responsible AI practices, ensuring ethical guidelines are met.
Full Job Description
What you'll do

  • Define and lead the technical strategy for AI and Machine Learning systems that power recommendations, ranking, and personalization across Bumble products, delivering measurable improvements in user engagement and safety
  • Design, develop, and deploy production-grade models using modern ML frameworks such as PyTorch , ensuring scalability and reliability in high-traffic environments
  • Build and deploy production AI Agents using raw and fine-tuned foundational Large Language Models (LLMs), along with sub-agents, tools, and MCP integrations
  • Architect end-to-end ML pipelines, integrating data processing (e.g. Spark, Airflow) with model training, evaluation, and deployment workflows
  • Drive experimentation frameworks, including A/B testing and offline evaluation, to continuously improve model performance and product outcomes
  • Partner cross-functionally with Product, Engineering, and Data leadership to translate business challenges into impactful ML solutions, collaborating with purpose and influencing at senior levels
  • Mentor and elevate senior individual contributors, fostering a culture of Excellence, Curiosity, and continuous learning across the ML community
  • Take ownership of complex, ambiguous problem spaces, seeing initiatives through from insight to impact while adapting approaches with an agile mindset
  • Champion responsible AI practices, ensuring fairness, transparency, and user safety are embedded into all machine learning systems

About You

  • Typically requires 10-15 years of experience, though we welcome candidates with alternative backgrounds that demonstrate equivalent skills.
  • Deep expertise in machine learning, with hands-on experience building and deploying large-scale systems in production environments
  • Strong proficiency in Python and at least one major ML framework (e.g., PyTorch, TensorFlow), with experience in areas such as recommendation systems, ranking models, or NLP
  • Expertise in prompting and fine-tuning Large Language Models (LLMs) and building production AI Agents
  • Proven experience designing scalable data and ML pipelines using tools such as Spark, Airflow, or similar distributed systems
  • Demonstrated ability to operate as a senior individual contributor, influencing technical strategy and decision-making without direct authority
  • Experience partnering effectively across functions, collaborating with purpose, and taking ownership of outcomes in complex organizational environments
  • A track record of mentoring and uplifting others, role modeling Respect and Excellence while building inclusive, high-performing teams
  • Strong AI fluency, with the ability to independently design, evaluate, and optimize ML systems, and guide others in the responsible and effective application of AI


Final Compensation

Will be determined based on factors such as the selected candidate's qualifications, relevant experience, skill set, and other job-related considerations.

About Bumble

Bumble is an online dating app that allows users to connect with potential partners. The company was founded in 2014 and is headquartered in Austin, Texas. Bumble offers a range of features, including photo verification, video chat, and voice calls. The company serves a variety of demographics, including young adults and the LGBTQ+ community.
Learn more about Bumble
Size
600 employees
Market Cap
$2.6 billion
Industry
Revenue
$582.1 million
NASDAQ

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