is on a mission to make a positive impact on people, organizations, and communities. Our first product, Surprise for Teams, is the world’s first and only SuccessOS. Surprise for Teams makes it fun and irresistible to perform better, which creates a positive, long-lasting impact on peopl

We’re looking for a Data Scientist or Machine Learning Engineer to join our world-class development team in Kyiv (Gulliver) or Lviv (Magnus) and help us build sophisticated and impactful ML models and algorithms.

What will you be doing?
Researching, designing, and implementing machine learning algorithms;
Communicating results, technical constraints, and decisions to the business and non-specialists;
Delivering rapid prototypes and proof of concepts that demonstrate real value;
Creating and delivering progress reports, slide decks, proposals, and documentation.

What we are looking for?
Upper-Intermediate English (B2) or higher;
A BS or higher in computer science or a related field;
4+ years of experience in software development;
2+ years of experience in Data Science;
Extensive knowledge of and practical experience in Machine Learning, Recommender Systems, and Algorithms;
Understanding of Machine Learning techniques like Linear Regression, Decision Trees, Collaborative Filtering, Anomaly Detection, etc.;

Practical experience with high-level programming languages like Python and DS frameworks;
Proficiency in database query languages such as SQL;
Understanding of the ETL process;
Knowledge of Linear Algebra, Probability and Statistics, and Numerical methods;

Understanding of software development process, Agile approach, and CI/CD.
What skills will come in handy?
Experience building large-scale recommender engines (collaborative filtering, KNN, associative rule learning, custom similarity metrics, etc.);
Understanding of predictive analytics (time-series analysis and forecasting, survival and duration analysis, etc.);
Ability to apply graph analysis techniques for structural pattern recognition;
Applied statistics skills, such as distributions, hypothesis testing, regression analysis, etc.;
Experience building microservices and containerized applications (Docker, k8s);
Familiarity with Big Data frameworks — Hadoop, Spark Experience with Natural Language Processing NoSQL databases, such as MongoDB, Cassandra, HBase;
Experience with mining of structured, semi-structured, and unstructured data;
Experience with data visualization tools, such as Ggplot2, Plotly, Matplotlib.

About us:
At, we’re committed to hiring builders who are inspired by our team’s guiding principle: to derive a tremendous sense of purpose from the inner quest for excellence itself, being driven from within to make anything we touch be the best it can be. We take pride in developing deep user understanding, obsess about the details, and go the extra mile to show our users we love them. We are first and foremost customer-driven – engineering, product, and design collaborate as equals to create a phenomenal end-user experience.

Extremely competitive salary for the local market;
20 working days of paid vacation;
Ultramodern offices in the heart of Lviv (Magnus) and Kyiv (Gulliver);
English classes;
Fruits and dinners;
And, of course, we get Surprises internally.

About Surprise has created a purpose built enterprise class platform that aligns employees, managers and business leaders to effectively drive “positive, goal directed behavior” and recognizes major accomplishments and milestones across an organization in support of personal, team and corporate goals.

The company is fundamentally changing how people work, by engaging employees and providing impactful analytics to people operations professionals. To continue scaling our impact, we’re committed to hiring builders who are inspired by our team’s guiding principle: to derive a tremendous sense of purpose to make anything we touch be the best it can be.

Headquartered in San Francisco, California, is currently building a team of professionals in Lviv to help the product develop even faster and conquer new markets.

Company website:

DOU company page:

Job posted on 22 June 2021
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