Change.org is searching for a Senior Data Scientist to help us build Intelligent content understanding, personalization and recommendation services within our scalable machine learning platform, that leverages adaptive exploration, text-based embeddings, high-level of automation and contextual bayesian bandits.

We’re a social impact business (a public benefit company), and the largest tech platform focused on civic action in the world with 80m monthly users, 50,000 campaigns launched on the site every month, 150 staff, and a new revenue model that has grown by 500% in 2 years. We’re growing quickly, and our users win campaigns for change once every hour. From strengthening hate crime legislation in South Africa; fighting corruption in Indonesia, Italy, and Brazil; to fighting violence against women in India.

We are looking for a Senior Data Scientist who is great at statistical data modeling, designing machine learning experiments & productizing bayesian bandits and custom multi-armed bandit models at scale and has a passion for expanding our machine learning platform to mobilize hundreds of millions of people to take deeper civic action.

You will be based out of our San Francisco headquarters and report to our Head of Machine Learning and AI. As a key member of our Data Intelligence pack, you’ll help us enable adaptive personalized user experiences on our site, recommend the best petitions to our altruistic supporters & enable staff-level support for petition starters beyond human scale. 

You’re a perfect fit for this role if your superpower is creative data hacking abilities in finding and inferring data from uncommon sources, a critical eye for introspective data analysis and hypothesis testing, & ability to customize and prototype bandit algorithms and bayesian models towards solving a unique business problem. 

A Senior Data Scientist at Change is someone who can work effectively and independently, manage their own priorities and make appropriate progress with minimal supervision. Typically, Senior Data Scientists have 3-5 years of relevant industry experience as well as a mastery of one skill, such as developing machine learning models using a distributed event interaction data, designing new multi-armed bandit algorithms and novel modeling methods on live time series data or inventing processes and hooks for data collection and enrichment of existing signals, etc.

When we get busy, it’s likely that we’re making headline news somewhere. It is a distinct pleasure to know we are providing a personalized experience that is empowering people all over the world. Our team takes great pride in using AI powers for good.

Key responsibilities:

• Deep analysis, and deriving insights from our rich user interaction and petition data 
• Defining specs, and prototyping models that improve the engagement and personalize the user experience within the live recommendation pipelines
• Designing processes for collecting and enriching the data we have on our users and our petitions and creating labeled datasets for ML modeling 
• Data modeling, prototyping and customizing multi-armed bandit algorithms for creating personalized user experiences and flows on the site and within our emailing programs 
• Design and develop context signals to be plugged into the Bayesian learning models
• Designing and owning experiment shots for tuning our live bandit algorithms
• Participate in design discussions to improve our existing machine learning frameworks and recommendation pipelines

The most important capabilities for the role are:

• Big data, interactive analysis coding for analysis and insights generating skills using one language of choice (python or Scala/Java) and excellent SQL skills in Zeppelin/Spark notebooks
• Very good Bayesian learning fundamentals and strong Statistics and Machine Learning foundations
• Experience with productizing Multi-armed bandits, or Bayesian bandit/learning style of modeling methods on industry tasks and in production environments 
• Hypothesis testing and experiments design, a creative mindset for designing loops for data collection and signal generation

Additional capabilities we’ll consider:

• Experience with building recommendations for B2C line of products
• Speaking or understanding multiple languages (ES, RU, FR, etc)
• A good communicator with a knack for story-telling

Interested? Great! Here's what you should know:

This is a full-time role based in San Francisco or Victoria. Our team is high impact, low ego, and has an amazing culture to be part of.

We are accepting applications until 30th of April, 2020

We especially encourage applicants of different backgrounds, cultures, genders, experiences, abilities and perspectives to apply. We’re actively working to increase the diversity of experience and perspectives on our team and are looking for someone who can help continue to lead that process. 

Change.org is committed to being a diverse and inclusive workplace. All qualified applicants will receive consideration for employment without regard to race, color, national origin, religion, sexual orientation, gender, gender identity, age, physical disability, or length of time spent unemployed.