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London Stock Exchange Group (LSEG)

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Senior Data Scientist

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Description

  • The Emerging Tech Standard Delivery Team drives the adoption of advanced technologies and develops enterpriseready solutions for D&A Operations.
  • In this role, the individual partners with Operations and Technology teams to design datadriven solutions that deliver clear business and customer value.
  • The position requires strong expertise in data analytics, NLP, deep learning, and data communication, along with the ability to learn financial content and core D&A business processes.
  • The individual must stay current with emerging technologies and collaborate closely with operations groups and specialized machine learning teams to deliver scalable, highimpact solutions.

Role, Responsibilities & Key Accountabilities:

  • Own the product vision for an industryleading data management framework, covering data acquisition, cleaning, transformation, and related workflows.
  • Support Lead Data Scientist on end-to-end AI/ML lifecycle: problem definition, design, experimentation, deployment, and continuous improvement.
  • Define an optimized user experience for financial analytics data pipelines, unifying multiple tools and services into an integrated workflow.
  • Partner with analytics domain experts to understand business data needs and translate them into a practical platform and framework strategy.
  • Lead the execution of this strategy in close collaboration with engineering and project delivery teams.
  • Communicate product goals, progress, and achievements to product, engineering, business leaders, sales, proposition, support, and other internal stakeholders.
  • Stay informed on financial analytics market trends to maintain a forwardlooking, futureready strategy.
  • Continuously learn and adapt to emerging technologies and techniques in financial analytics.
  • Develop and deploy productiongrade AI models and datadriven solutions aligned with strategic objectives.
  • Tune and optimize AI models to improve accuracy, performance, and scalability.
  • Evaluate thirdparty AI capabilities using both functional and nonfunctional criteria.
  • Establish and enforce coding standards to ensure a maintainable, robust codebase.
  • Collaborate with Software Engineers and crossfunctional teams to define requirements, set direction, and shape development roadmaps.
  • Handson experience in data science, including Natural Language Processing, Large Language Models, prompt engineering, and RetrievalAugmented Generation (RAG).
  • Skilled in training, testing, and validating deep learning models as well as classical machine learning models.
  • Ability to design and implement evaluation frameworks for automation solutions based on business requirements.
  • Experience building solutions and onboarding workloads on AWS or other cloud platforms.
  • Expertise in web crawling and scraping techniques, entity identification and extraction, and advanced pre and postprocessing methods using emerging technologies such as prompt engineering.
  • Proficient in processing structured, semistructured, and unstructured data from PDFs and scanned documents.

Required Skills:

  • 6-8 years of experience in data science, analytics, or statistical modelling roles.
  • Strong foundation in data analytics, feature engineering, NLP, predictive modelling, LLMs, and RAG workflows.
  • Expertise in Python and core ML/DL libraries (TensorFlow, PyTorch, Scikitlearn), with demonstrated experience in developing and productionizing AI models.
  • Proven ability to apply strong statistical analysis skills, including probability and applied statistics, to model development and evaluation.
  • Experience with Gitbased version control and CI/CD pipelines (GitLab/GitHub runners). Strong understanding of relational databases, largescale data processing, and statistical programming.
  • Familiarity with MLOps principles and experience deploying solutions on cloud platforms (AWS and/or Azure).
  • Handson experience with commercial or opensource data management tools.
  • Excellent communication and presentation skills, capable of simplifying complex technical concepts for both technical and business audiences.
  • Strong influencing and collaboration skills, supporting crossteam execution and alignment. Ability to diagnose and resolve complex technical and business problems using deep analytical and industry knowledge
  • Ability to set and uphold coding standards.
  • Hands-on experience with leading commercial or open-source data management tools.
  • Excellent written, verbal, and presentation skills, with the ability to present to peers, senior management, and cross-functional partners.
  • Broad business awareness and understanding of relevant internal business relationships.

Preferred

  • Experience in large financial services or investment banking environments.
  • Familiarity with Refinitiv or LSEG products and financial data workflows.
  • Experience working with global or distributed teams.
  • Comfort interacting with senior stakeholders, including executives and Csuite partners.

Education:

  • Masters degree in Statistics, Mathematics, or Computer Science with a Data Science certification, or an Engineering degree specializing in Data Science and Artificial Intelligence.
  • Proficiency in Python, R, and SQL.

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