Data Scientist jobs in Israel

Nift is disrupting performance marketing, delivering millions of new customers to brands every month. We're hiring a hands-on Senior Applied Data Scientist to help build and scale production-grade recommendation systems that drive our core marketplace outcomes. This is not a research-only role. We're looking for someone who can take models from idea to production — running experiments, measuring business impact, and continuously improving the systems behind how Nift matches people with the right brands. You'll own the full lifecycle: exploratory analysis, data prep, modeling, testing, deployment, and post-launch measurement. The ideal candidate has worked in a real production environment, brings strong deep learning experience, and understands recommendation systems in practice — not just in theory. Success here means shipping models that move Nift's core KPIs, connecting technical work to measurable business impact, and helping the team scale with strong engineering discipline. This role is ideally based in Israel, but strong candidates in the U.S. will also be considered. What You'll Do • Own the full funnel of applied machine learning work, from idea through production • Build, improve, and deploy recommendation models that support Nift's core business goals • Tackle deep learning problems in a production setting — not just offline experimentation • Conduct exploratory data analysis, preprocessing, feature development, and modeling • Run experiments and evaluate success against business KPIs, not just model metrics • Partner with engineering and infrastructure teammates to productionize models and scale systems • Improve recommendation quality, personalization, and the business performance tied to those systems What You'll Have • 5+ years of experience in production data science environments • Strong hands-on experience taking machine learning models into production • Strong deep learning experience; proficiency with PyTorch or TensorFlow is expected • Direct experience with recommendation systems, or adjacent experience in areas like bidding or dynamic pricing • Strong Python and SQL skills • Experience working with data at meaningful scale — high-scale environments are a strong plus • The ability to measure model success through business outcomes such as revenue, conversion, churn, or similar KPIs Bonus points for: • A Master's degree, especially paired with strong production experience • A PhD paired with meaningful production-grade work (purely academic backgrounds aren't the target profile for this role) • A software engineering background — particularly for candidates who've built pipelines and production systems before moving into machine learning About Us Our mission is to reshape how people discover and try new brands by introducing them to new products and services through thoughtful "thank-you" gifts. Our customer-first approach ensures businesses acquire new customers efficiently while making customers feel valued and rewarded. We are a data-driven, cash-flow-positive company that has experienced 731% growth over the last three years. Now we're scaling to become one of the largest sources of new customer acquisition worldwide. Backed by investors who supported Fitbit, Warby Parker, and Twitter, we're poised for exponential growth and ready to demonstrate impact on a global scale.

About Fundamental Fundamental is an AI research lab pioneering the future of enterprise decision-making. Our flagship model, NEXUS is the world's most powerful Large Tabular Model (LTM) - purpose-built for the structured records that contain trillions of dollars in business value. With $275m in funding from leading investors and trusted by Fortune 100 companies, Fundamental is giving businesses the Power to Predict. At Fundamental, you'll work on unprecedented technical challenges in foundation model development and build technology that transforms how the world's largest companies make decisions. This is your opportunity to be part of a category-defining company from the ground-up. Join the team defining the future of enterprise AI. About the role In this role, you'll research, develop, and productize data science capabilities that enhance and expand our product performance on real enterprise use cases - working across a wide range of prediction tasks, data types, and business domains. You'll go deep on hard data science problems, collaborate closely with R&D on product capabilities, and ship production-grade work that has a direct impact on Production use cases. Key responsibilities • Research and develop data science methods that improve NEXUS predictive performance across diverse enterprise datasets, industries, and prediction task types • Design and implement robust, production-quality Python components with a strong focus on correctness, generality, and reusability • Deeply understand the characteristics of real-world enterprise data and develop strategies that help NEXUS handle them reliably • Run rigorous experiments to measure the impact of new approaches, design meaningful benchmarks, and use results to guide prioritization • Work across a wide variety of structured data problems - including but not limited to classification, regression, ranking, and forecasting • Collaborate closely with the Engineering and Research teams to develop a deep understanding of NEXUS model behavior and use that knowledge to inform your work • Work with Applied AI Engineers to validate approaches on real customer datasets and translate findings into product capabilities • Contribute to technical documentation and internal best practices, helping the broader team apply new capabilities correctly and confidently Must have • 5+ years of experience in data science or machine learning roles • Strong Python skills, including fluency with pandas, numpy, and scikit-learn • Deep hands-on experience with traditional ML models: XGBoost, LightGBM, CatBoost, and similar gradient boosting frameworks • Solid understanding of what makes real-world tabular data challenging: class imbalance, high cardinality, distribution shift, missing values, and more • Strong experimental mindset - comfortable designing benchmarks and drawing rigorous conclusions from noisy results • Ability to work autonomously and drive work from idea to shipped output Nice to have • Familiarity with tabular foundation models (TabPFN, CARTE, or similar) • Competitive data science experience (Kaggle, DrivenData, or similar) - especially top finishes on tabular competitions • Background in a domain where structured prediction matters: finance, supply chain, healthcare, retail, or industrial • Experience contributing to or designing internal ML libraries or shared tooling • Familiarity with DuckDB, Polars, or modern in-process analytics engines • Comfort reading ML research papers and translating findings into practical implementations Benefits • Competitive compensation with salary and equity • Comprehensive health coverage for you and your dependents • Paid parental leave for all new parents, inclusive of adoptive and surrogate journeys • Relocation support for employees moving to join the team in one of our office locations • A mission-driven, low-ego culture that values diversity of thought, ownership, and bias toward action