Senior Data Scientist

About Us KYROS is the only actuarial firm solely focused on loyalty programs. We’re a small, boutique, fully remote consulting firm built by actuaries and technologists who wanted to rethink how actuarial work is done. We help your favorite frequent flyer program, hotel, bank or retail loyalty program measure and optimize the economic value that the program creates through a modern, highly technical combination of actuarial theory, machine learning and big data technology. As a lean and growing team, we operate much more like a startup than a large consulting firm. We move quickly, expect a high level of execution, and rely on team members to take ownership of their work end-to-end. This is an environment for people who work efficiently, make sound decisions with incomplete information, and enjoy delivering high-quality work without layers of process or bureaucracy. If you thrive on variety, enjoy coming to work not always knowing exactly how your day will unfold, and get energized by balancing multiple priorities in a fast-moving environment, this role is for you. The Role We’re looking for a highly motivated data scientist to help us deliver a growing portfolio of client projects. This role is best suited for someone who thrives in a fast-paced, hands-on environment and wants to have a real impact on both client outcomes and how our work is done. The ideal candidate has strong hands-on PySpark, Python, and SQL skills, experience working with large, complex datasets, and a proven ability to clean and structure data as the foundation for analytical and modeling work. You’ll go beyond data engineering to design and build machine learning models and take ownership of the end-to-end data science workflow from data through insights. Just as important: the ability to connect that technical work to the bigger picture — understanding not just how to build something, but why, and what it means for the client. Note: This is not an AI research or NLP/LLM engineering role. This role works primarily with structured, tabular data (e.g. member-level transactional loyalty program data), not unstructured text data. A Day in the Life No two days look exactly the same, but here's what the work typically looks like: You start with a client's business problem — for example, what are the key drivers that impact a loyalty program’s liability or the customer behaviors that drive long-term customer lifetime value — and figure out how to turn that into a full end-to-end data science workflow You work directly with the client to define data requirements and build the data pipelines to ingest and transform raw loyalty program data into clean structured datasets that are ready for analysis and modeling You design, build and evaluate predictive models, making sound decisions around feature engineering, methodology, and trade-offs along the way You synthesize insights from the results and translate them into a clear story that helps a non-technical client make a real business decision In between, there's always ad hoc work — new client questions, one-off analyses, and the occasional problem nobody has solved before There's also real opportunity to innovate: to build new solutions, design new approaches, and contribute to how our analytics platform evolves. We're always improving how the work gets done, and we want people who want to be part of that.