Senior Machine Learning Engineer, Tumblr
Overview
We are looking for an experienced candidate to join our Feeds Experience team, which builds Tumblr’s backend systems—powering core content feeds, search, personalization/discovery experiences, user-interest profiling, content understanding and notifications. Your goal will be to design, develop and maintain large-scale data pipelines and backend services, to connect users with the content they love. The team plays a critical role in driving daily active users by improving engagement and retention on Tumblr.
Job Description
Tumblr launched in 2007 with the belief that people need a place to say what they want, be who they want, and connect over their interests. We continue to build Tumblr as a platform for free expression, individuality, and human connection. We build on top of open source big-data frameworks, such as Apache Spark (batch processing) and Apache Flink (real-time processing), orchestrated by Kubernetes, Apache Airflow, and with a PHP backend layer.
Responsibilities
- - Collaborate with the team to enhance engagement on feeds, notifications, content discovery and relevance of search results
- - Research and develop new features to improve user engagement and the reactivation of lapsed users
- - Define success metrics, launch A/B tests, perform analysis to validate hypotheses, and build tools to enable continuous experimentation
- - With stakeholders from Engineering, Product, and User Research, contribute to the team''s strategy and roadmap
- - Identify short- and long-term opportunities for business impact on Feeds, Search, and Notifications
- - Drive architectural decisions and implementation
- - Quantify the impact of implemented solutions and distill learnings.
Required Skills
- - Good understanding of statistics, machine learning, and mining of massive datasets
- - 3+ years of professional experience developing large-scale data-pipelines and machine learning approaches for content retrieval, ranking, relevance, and personalization
- - 5+ years of professional experience in software engineering, with expertise in at least one among the following programming languages: Python, Scala, Java, and PHP
- - Hands-on experience with data processing frameworks like Apache Spark and Apache Flink at scale
- - Excellent written English and effective communication skills
- - Goal driven, humble, and equal willingness to learn and teach
- - Excitement to join a globally distributed team
- - Familiarity with remote and async work is welcome.
Benefits
- - Competitive salary range ($100,000-$200,000 USD)
- - Distributed company with more than 1900 Automatticians in 96 countries
- - Diversity, equity, and inclusion are priorities
- - Access to DEI committees and resources
- - Open Source work with the vast majority available under the GPL
- - Numerous languages supported in products and customer support
- - Unconscious bias training for hiring teams
- - Products accessible across different bandwidths and devices
About the company
We are the people behind WordPress.com, Woo, Jetpack, WordPress VIP, Simplenote, Longreads, The Atavist, WPScan, Akismet, Gravatar, Crowdsignal, Cloudup, Tumblr, Day One, Pocket Casts, Newspack, Beeper, and more. We believe in making the web a better place.