Senior Machine Learning Engineer, Ads Covernsion Modeling

As a company, Reddit primarily generates revenue through advertising, and we're working towards building a massive business to fund our mission. We distinguish ourselves from other digital ad platforms by attracting advertisers who want to connect with a specific target audience because of our passionate and engaged communities.
The Ads Conversions Modeling Team is entrusted with the development and maintenance of a diverse set of Machine Learning models that are responsible for predictions regarding user conversions after engaging with Reddit. The creation and enhancement of these models plays a crucial role in our organization's efforts to optimize advertising effectiveness and drive business growth. We are looking for a motivated engineer that will help us advance our vision. As a diverse group of software engineers, product managers, data scientists, and ads experts, we are excited for you to join our team!
As a machine learning engineer in the Ads Conversion Modeling Team, you will take a leadership role in researching, formulating, and executing projects, while actively participating in the end-to-end implementation process. You will collaborate with cross-functional teams to ensure successful product delivery. You will also be able to contribute your expertise and shape the future of ads ML at Reddit!, Building industrial-level models for critical ML tasks with advanced modeling architectures and techniques
Research, implement, test, and launch new model architectures including deep neural networks with advanced pooling and feature interaction architectures
Systematic feature engineering works to convert all kinds of raw data in Reddit (dense & sparse, behavior & content, etc) into features with various FE technologies such as aggregation, embedding, sub-models, etc.
Contribute meaningfully to team strategy. We give everyone a seat at the table and encourage active participation in planning for the future
Be a mentor and cross-functional advocate for the team
Contribute meaningfully to team strategy. We give everyone a seat at the table and encourage active participation in planning for the future

Tracking records of consistently driving KPI wins through systematic works around model architecture and feature engineering
3+ years of experience with industry-level deep learning models
3+ years of experience with mainstream ML frameworks (such as Tensorflow and Pytorch)
4+ years of end-to-end experience of training, evaluating, testing, and deploying industry-level models
4+ years of experience of orchestrating complicated data generation pipelines on large-scale dataset
Experience with Ads domain is a plus
Experience with recommendation system is a plus

Reddit is a community of communities. Its built on shared interests, passion, and trust and is home to the most open and authentic conversations on the internet. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 97M+ daily active unique visitors, Reddit is one of the internets largest sources of information. For more information, visit redditinc.com.

Pension Scheme
Private Medical and Dental Scheme
Life Assurance, Income Protection
Workspace benefit for your home office
Personal & Professional development funds
Family Planning Support
Commuter Benefits
Flexible Vacation & Reddit Global Days Off