Sustainable Investment Data Scientist

Profile Summary

We are seeking a detail-oriented and technically proficient Data Scientist with 2+ years of experience working with large-scale financial datasets. The ideal candidate is skilled in Python, SQL, and statistical analysis, with a strong foundation in data quality assurance, anomaly detection, and exploratory data analysis. Experience in a financial data environment is preferred. Familiarity with Sustainable Investment, ESG data, or Index methodologies is a plus, but not essential.

Key Responsibilities

• Apply statistical techniques and Python-based workflows to monitor and validate large-scale datasets.
• Conduct exploratory data analysis on new Sustainable Investment datasets to detect anomalies and assess operational risks.
• Review vendor data methodologies and compare them with internal analytical findings.
• Define outlier logic and quality control thresholds for new sustainable data pipelines.
• Prototype and operationalize new data quality checks.
• Extract insights from unstructured data (e.g., text) using NLP & LLM tools.
• Perform ad hoc analysis to support client queries, methodology discussions, and process improvements.
• Collaborate with cross-functional teams to enhance data pipelines and operational efficiency.

Required Skills

• Programming: Python, SQL; experience with NLP and LLM tools.
• Data Analysis: Statistical modelling, anomaly detection, trend analysis, EDA, data profiling, validation frameworks.
• Big Data Tools: AWS suite, including S3 and Athena.
• Visualization: Power BI, Matplotlib, Seaborn.
• Domain Knowledge: ESG/Sustainable Investment and Index data (preferred but not essential).
• Strong communication skills and stakeholder engagement.
• Proactive, solution-oriented mindset with strong problem-solving abilities.

What This Role Offers

• Opportunity to apply advanced data science techniques to complex Sustainable Investment datasets.
• Exposure to cross-functional collaboration with Research, Product, and Engineering teams.
• Career growth in a domain that blends Sustainable Finance, Index Strategies, and advanced analytics.

Career Stage:

Senior Associate

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

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