Meet our team
PayPal is a global leader in online payments and democratization of financial services, providing payment solutions for hundreds of millions of customers all over the world. In a high-impact and high-visibility environment, you will have the opportunity of utilizing PayPal’s large-scale infrastructure (including network graph assets) to design and develop large-scale ranking and recommendation systems powering content on novel user interface designs to fundamentally enhance customer experience and engagement.
Your way to impact
As a Tech Lead Senior ML Engineer, you will have the opportunity to pioneer large-scale ranking and recommendation systems for sequential content consumption on newly installed user interface designs at PayPal. The solutions developed by you and your team will aid in building novel and meaningful graph-based community assets around the PayPal network of consumers and merchants, to ultimately drive key product and marketing KPIs associated with customer experience, engagement and the revenue bottom line.
Your day to day
As a Senior Machine Learning Engineer (Tech-Lead) you will be responsible for:
- Creating innovative AI/ML solutions that enhance personalization for PayPal users, with a focus on ranking and recommendation algorithms.
- Writing scalable, production-quality code to deploy models on company infrastructure, optimizing for performance and efficiency.
- Collaborating with cross-functional teams, including engineering, product, and marketing, to design, develop, and track key performance indicators (KPIs) for ranking and recommendation models.
- Conducting experiments to measure these KPIs, as well as deriving actionable insights from the data, to continually improve the technology and drive business outcomes.
- Providing technical leadership and guidance to junior machine learning engineers, scientists, and statisticians, while sharing ownership of the final deliverables.
What are we looking for
- Advanced degree (MS or PhD) in quantitative science or engineering field (for example: Computer Science, Statistics, Mathematics, Operation Research) with a minimum of 8 years of hands-on experience as an individual contributor and at least 2 years of experience as a technical lead.
- Proven expertise in designing and developing AI/ML models for ranking and recommendation systems, with in-depth understanding of both traditional collaborative/content-based recommendation methods and cutting-edge deep learning algorithms, reinforcement learning, and bandit techniques.
- Demonstrated ability to write scalable production-quality code in Python, Java, Scala or a similar programming language, and to design and implement data engineering pipelines using technologies like Hive, SQL, BigQuery, or Spark.
- Proficiency in machine learning frameworks and packages, such as Tensorflow and PyTorch.
- Proven track record of effectively leading and mentoring junior machine learning engineers, providing technical guidance and fostering their professional growth.
Nice to Haves
- Experience with Graph-based algorithms and infrastructure.
- Prior experience working in a cloud-based environment such as GCP.
- Experience developing feed-based ranking and recommendation systems.
- Hands-on experience with conducting experiments in various areas of personalization and causal inferencing is a plus.
We know the confidence gap and imposter syndrome can get in the way of meeting spectacular candidates. Please don't hesitate to apply.
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