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Data Scientist

United Kingdom

Key information

Date live Dec. 23, 2022

Business Area Barclays UK

Area of Expertise Analytics

Contract Permanent

Reference Code 90357685

Marketing at Barclays

Marketing is for ambitious professionals who want make their mark and do something very special to help transform Barclays UK. Never content with mediocre, we always aim to be the first and the best. We’re very creative and well-versed in the latest digital marketing techniques, intuitively guiding the business and our brand on what customers want, now and for the future.

We’re driven by a desire to understand, not just people, but society. One in two adults in the UK are Barclays customers, and we want to turn the wide world of finance into experiences everyone can grasp. By tuning into how diverse our communities are, how they think and make decisions, and what we can do to fix problems and improve their daily lives. Here, you’ll distinguish yourself by considering the complex and making it simple.

Job description

Data Scientist
Independent location

As a Barclays Data Scientist, get an exciting opportunity to develop and deploy machine learning applications that achieve transformative outcomes in support of and for BUK and our customers. Your primary focus for this role is on writing rigorous and robust code to underpin better pricing, marketing, and affordability models, as well as advanced customer and channel analytics. These models in turn power new commercial propositions, enhanced efficiencies, and excellent risk controls.

Barclays is one of the world's largest and most respected financial institutions, with 329 years of success, quality, and innovation behind us. We offer careers that provide endless opportunity – helping millions of individuals and businesses thrive and creating financial and digital solutions that the world now takes for granted.

Working Flexibly
We’re committed to providing a supportive and inclusive culture and environment for you to work in. This environment recognizes and supports ways to balance your personal needs, alongside the professional needs of our business. Providing the opportunity for all our employees, globally to work flexibly empowers each of us to work in a way that suits our lives as well as enabling us to better service our customers’ and clients’ needs. Whether you have family commitments or you’re a carer, or whether you need study time or wish to pursue personal interests, our approach to working flexibly is designed to help you balance your life. If you would like some flexibility, then please discuss this with the hiring manager, and your request will be reviewed subject to business needs.

This opportunity is location flexible. We will consider requests for locating the role at an alternative Barclays’ key UK office from that advertised.

We are currently in the early stages of implementing a hybrid working environment, which means that many colleagues spend part of their working hours at home and part in the office, depending on the nature of the role they are in. We’re flexible on how this works and it may continue to change and evolve. Depending on your team, typically this means that colleagues spend a minimum of between 20% to 60% of their time in the office, which could be over a week, a month, or a quarter. However, some colleagues may choose to spend more time in the office over a typical period than their role type requires. We also have a flexible working process where, subject to business needs, all colleagues globally can request work patterns to reflect their personal circumstances. Please discuss the detail of the working pattern options for the role with the hiring manager.

What will you be doing? 
• Designing and delivering transformative data science projects as part of diverse, multifunctional teams, utilising a diverse range of data sources
• Identifying and applying appropriate analytical techniques in building predictive and prescriptive models  
• Building Python applications to extract, transform, and examine various types of data, especially at scale and for constructing robust pipelines often combining multiple sources
• Developing and deploying machine learning applications using DevOps tools and in accordance with governed patterns of production
• Translating modelling approach and outputs into business implications that are interpretable and exciting to non-technical audiences through persuasive and transparent presentations
• Spearheading exploration of data in various forms and from multiple sources, and handling data mismatch and inconsistencies to extract relevant insights useful for the business
• Documenting own code appropriately so it is easily readable, repeatable, and extensible, and conducting peer review on the code of other colleagues in the team

What we’re looking for: 
• Experience building standard supervised (GLM, ensemble techniques) and unsupervised (clustering) models in prior professional roles, and an understanding of standard industry libraries (pandas, sklearn, keras etc)
• Proficiency in big data technologies (spark, dask) and databases (SQL, NoSQL)
• Significant understanding of and expertise in Python, including writing unit tests, building packages, and writing reusable/maintainable code
• Ability to understand and explain modelling techniques and visualise analytical results (e.g., matplotlib/seaborn/plotly/D3/tableau)

Skills that will help you in the role:
• Skilled at pitching ideas and analytical results to connect with people in a way that has impact and influence
• Understanding and demonstrated evidence of building analytical solutions in an industry setting
• Prior usage of continuous integration/development tools (e.g., Jenkins and Spark ML pipelines)
• Experience in any of these specialist areas: reinforcement learning, NLP, Bayesian techniques/generative models

Where will you be working?
We will confirm your place of work at the point of offer, ensuring that this is considered in line with our future ways of working and overall location strategy.

#LI-Remote #LI-Hybrid


Success profile

To be successful in Marketing at Barclays, you’ll need a few things. Curiosity is number one, but also a genuine excitement for what we can offer and what you can do here.

Qualities we look for: intuitive, analytical, creative, consumer focused

What you get in return

However high you rise at Barclays, we believe all our employees should receive a competitive package of core benefits flexible to you and your family’s needs. At Barclays, you’ll support our customers and clients, and we’ll support you with rewards that will genuinely make a difference.

Competitive holiday allowance

Competitive pay

Private medical care

Flexible working

Life insurance

Pension contribution

Income protection

Voluntary benefits

The Barclays Way

This is the spirit of Barclays. It’s why we exist, what we believe and how we behave. But most importantly, it’s how we make decisions, take action and get things done.

Learn more


We exist to provide responsible finance to people and business – but also a whole lot more.


We believe great talent RISES. It acts with Respect, Integrity, Service, Excellence and Stewardship.


We discover our full potential through our desire to Empower, Challenge and Drive each other.

We have an open and collaborative culture, where we share our ideas and allow creativity, curiosity and empathy to flourish – these attributes are critical to our success.

Noel Lyons

Chief Design Officer

The company values and culture, I stumbled into my career at Barclays but being part of an organisation that puts people in the centre I found so inspiring it made me want to stay.

Jen Hornsby

Service Design Principal

The Barclays brand has always resonated with me and it was my very first bank account that my nan opened for me! As it is a big company you can really have an impact on customers’ lives and make money more manageable for millions of customers.

Becky Oliver

Head of Future Design Strategy

Barclays impressed me with how much rigour they put in user research and the design process.

Raymond Thi

Senior Designer

More about working at Barclays

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