Data Science Specialist

Full time

Employment Information

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Job Purpose:

An exciting opportunity exists to join the Data Science Insights (DSI) team within Citi Global Data Insights (CGDI) unit of our new Client Division. The successful candidate will be a curious and critical thinker eager to solve a wide variety of analytical challenges, while communicating any output in simple terms; verbally, through visualizations, effective summary statistics, and external content. As part of DSI you will work with external clients to execute on their bespoke projects by utilizing alternative datasets, different data platforms and data science techniques. You will be part of CGDI which is responsible for Citi’s Client Division’s data science efforts. Based in London, this role will appeal to a highly motivated individual looking to leverage their strong quantitative skillset in a highly visible and growing front-office department.

Job Background/context:

Being a leading global bank with a presence in over 160 countries and jurisdictions to meet institutional and individual banking needs and more than 30 countries in Research, Citi is a trusted global trading partner and a respected global leader in investment research and analysis. Citi’s research business is one of the largest and most established, both regionally and globally. Our clients include a wide range of institutional, corporate, sovereign, high net worth, and retail investors, and we provide these clients with value-added, independent, insightful and actionable investment advice.

Citi Global Data Insights unit is established within Citi’s Client Division and is a key data science stakeholder across the bank.

Key Responsibilities:

  • Based in London, you will be working in a rapidly growing team of DSI which is establishing its presence across multiple locations globally.
  • Liaise with relationship management teams and corporate bankers to prioritize project leads and explore new business opportunities with investors and corporate clients
  • You will be a visible data science expert, working closely with external clients in interpreting their briefs and converting them to high quality actionable data science projects.
  • You will participate in investigating new project ideas, design a framework of a solution, evaluate its effort and feasibility and provide recommendations to management who will align against financial value.
  • You will work on all stages of the data analysis cycle - collect, process and enrich data of different formats from multiple sources using a variety of technologies and platforms; load, manipulate data using free SQL writing; analyze the data using various analysis tools and visualize data.
  • You will also work closely with Innovation Lab globally, leveraging their capabilities to deliver bespoke data science projects from external clients.
  • You will contribute, from an analytics and content perspective to client publications and work closely with Client Division stakeholders on these publications.
  • Supervise the derived data assets available in DSI, to effectively push a project from data curation to data analysis and execute on the agreed form of output and into production.
  • Create a strong relationship with the different stakeholders of each project updating on the progress and consulting iteratively when necessary.
  • Gather, validate, and analyze large complex information sets; understand the meaning of the data and how it applies to end users; identify and trouble-shoot / problem solve issues with data or results.

Development Value:

The role will give you exposure to world’s largest asset management firms, hedge funds, sovereign wealth funds, other institutional and corporate clients. You will also work with proprietary datasets from other divisions across Citi franchise to provide unique insights to clients.


  • Proven experience with working on various databases including Big Data platforms. This includes data engineering, analysis and modeling.
  • Strong knowledge and experience of statistical and data mining and machine learning


  • Programming experience with Java, Python, R or other related tools
  • Strong working knowledge of SQL, ETL and BI tools
  • Expertise in visualizing data using Tableau, Power BI or similar tools a bonus.
  • algorithms such as regression techniques, neural networks, decision trees, clustering, pattern recognition, probability theory, stochastic systems, Bayesian inference, statistical techniques and dimensionality reduction
  • Exposure to NLP, LLM, and Generative AI techniques and tools.
  • Strong analytical and project management skills, including a thorough understanding of how to interpret business requirements and provide data to help observe trends and identify anomalies.
  • Evidence of an ability to work under pressure, within tight time-lines and with strict attention to detail.
  • Demonstrated report development skills; ability to design and develop reports and dashboards based on business requirements and optimal user experience.
  • Financial industry knowledge; an understanding of, and keen interest in, investment management and financial markets highly desirable


  • BSc or MSc degree with emphasis on one or more of the following: big data, data science, computer science, computer engineering, statistics, mathematics or equivalent quantitative discipline. A PhD is a strong bonus / or equivalent work experience
  • Expertise in Data Science tools and techniques like Arima, regime based models, VAR, error correction models, multivariate time series models
  • Intermediate to advanced Microsoft Excel and/or other data transformation tools
  • Basic knowledge of OOP fundamentals
  • Experience in Big Data (Hadoop ecosystem) highly desirable.
  • Intermediate to advanced Microsoft Office skills, especially Word and Excel bonus.

What we Offer:

As well as a competitive salary and consideration for a yearly discretionary bonus, Citi offers:

  • 27 days paid annual leave
  • Award winning pension scheme
  • Life assurance
  • Private medical insurance with Bupa healthcare

In addition, we offer a competitive maternity, paternity and adoption leave scheme and employees also have the option (provided they have a student loan from the Student Loan Company) to divert saver and company match contributions to their student loan. We pride ourselves on our ability to offer employees a number of lifestyle benefits including;

  • On site restaurant and coffee shops, online shopping and concierge service and subsidised clubs and societies.
  • Our select benefit package offers you the opportunity to customise your benefits according to your own lifestyle preferences and includes corporate discounts, memberships and a range of additional extras.
  • Our vast range of diversity networks demonstrates Citi’s commitment to growing a diverse workforce.

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