--- title: "Senior Applied Data Scientist | NDA" company: "GT" company_url: "https://www.remjobs.works/companies/gt" url: "https://www.remjobs.works/job/gt-senior-applied-data-scientist-nda-8efed5e8-ec44-4748-82c7-ddec81a9c7bd" apply_url: "https://jobs.ashbyhq.com/gt-hq/0f4084fe-b775-44a7-b3b2-9eb3c80d1ab2" workplace: hybrid location: "Warsaw, Poland " employment_type: full-time seniority: senior role: data region: europe skills: ["databricks", "llm", "nlp", "python", "pytorch", "snowflake", "sql", "tensorflow"] date_posted: 2026-08-31T13:33:08.533Z first_seen_by_remjobs: 2026-09-19T22:13:22.407Z --- # Senior Applied Data Scientist | NDA **GT** · Warsaw, Poland Apply: https://jobs.ashbyhq.com/gt-hq/0f4084fe-b775-44a7-b3b2-9eb3c80d1ab2 ## About the role **GT was founded in 2019 by a former Apple, Nest, and Google executive.** GT’s mission is to connect the world’s best talent with product careers offered by high-growth companies in the UK, USA, Canada, Germany, and the Netherlands. On behalf of our client, GT is looking for a **Senior Applied Data Scientist** interested in developing and testing new ML, embedding, and LLM-based approaches to solve complex data matching problems at scale. #### About the Client Our client is a leading global management consultancy known for tackling some of the world’s most complex business challenges. With a focus on strategy, transformation, and performance improvement, the firm partners with major organizations across industries to drive lasting impact. #### About the Role We are looking for a **Senior Applied Data Scientist** to improve how entity resolution is performed at scale. You will develop and test new ML, embedding, and LLM-based approaches for matching complex business records across multiple data sources. The work is centered on model quality, experimentation, and evaluation; engineering partners will help productionize successful approaches. A key part of the role is exploring how newer foundation-model techniques can improve matching quality while remaining practical and scalable for very large datasets. #### Responsibilities: **Develop better ways to match company records** - Build new ML, embedding, and LLM-based approaches for matching entities - Improve how the system handles messy data, including name variations, aliases, domains, websites, firmographic attributes, multilingual records, and data hierarchies. - Develop scoring and ranking approaches to distinguish accurate matches from duplicates, similar-looking records, and unrelated entities. - Evaluate and implement AI and machine learning techniques to improve matching quality while considering accuracy, scalability, and cost. - Design approaches that can operate efficiently at scale, taking model usage and computational cost into consideration.**Improve evaluation, experimentation, and match quality** - Define and improve methods for evaluating match quality, including precision, recall, false positives, false negatives, confidence, coverage, and manual review effort. - Assist in building trusted benchmark sets that allow us to compare new models against the current matching engine before production rollout. - Explore LLM-assisted review and validation to assess matching performance and benchmark more scalable approaches. - Turn ambiguous matching problems into clear hypotheses, experiments, metrics, and recommendations.**Partner with engineering to bring successful ideas into production** - Work closely with data engineering and software engineering teams to turn promising prototypes into production-ready matching logic. - Provide engineering partners with clear model specifications, evaluation results, expected behavior, edge cases, and rollout requirements. - Help determine the most appropriate matching techniques based on data characteristics, confidence levels, and cost considerations. - Continuously evaluate matching performance, investigate regressions, and recommend improvements to models and matching logic. - Clearly communicate technical tradeoffs related to matching performance, scalability, cost, latency, explainability, and operational considerations. #### Essential knowledge, skills & experience: - 5–8 years of relevant experience in Data Science, Applied Data Science, Applied Machine Learning, or a similar role. - Strong applied ML fundamentals, with hands-on experience building and evaluating models on real data. - Excellent Python and SQL skills. - Practical experience with embeddings, semantic similarity, LLMs, or related AI techniques. - Hands-on experience training supervised and unsupervised models, including classification and NLP tasks. - Working knowledge of neural network and transformer architectures. - Proficiency with common ML frameworks such as TensorFlow, PyTorch, and PyCaret. - Experience retraining a taxonomy classifier or maintaining classification models in production. - Experimental judgment: able to define baselines, metrics, test sets, and error analysis that show whether quality improved. - Ability to explain model behavior, tradeoffs, and edge cases clearly to engineering and business partners. #### #### Nice-to-have: - Experience with entity resolution, record linkage, deduplication, or similar matching problems. - Experience with ranking, similarity scoring, retrieval, clustering, or candidate generation. - Experience applying LLMs or embeddings to business problems where cost and scale matter. - Exposure to large-scale data platforms such as Spark, Snowflake, Databricks, or BigQuery. - Familiarity with company, domain, website, firmographic, or other business-entity data. #### #### Interview Steps: 1. GT interview with Recruiter 2. Technical interview 3. Final interview #### #### --- Source: GT's own career page, read by RemJobs. Canonical HTML version: https://www.remjobs.works/job/gt-senior-applied-data-scientist-nda-8efed5e8-ec44-4748-82c7-ddec81a9c7bd