Data Scientist jobs in Wales

Job Description

Position title: Graduate Data Consultant

Expected commencement date: September 2027

Salary: Starting salary £31,500

Contract type: Permanent contract with initial 12 month graduate programme.

Contract hours: Full-time - 40 hours per week

Location: Cardiff City Centre - hybrid role working in our office.

Applications Deadline: 15th November 2026

What you’ll be doing

• Initially you work through our mandatory training courses to familiarise yourself with the platforms we regularly use.
• Shadowing experienced data colleagues who will support you in your early transitioning into Butterfly Data, which may include a range of work across the data disciplines.
• Receive coaching from the academy groups to help decide which of the main data disciplines you would like to specialise in: data analysis, data engineering, data science or data management.
• You will undertake a variety of projects with clients, providing technical data solutions for a broad range of challenges, helping organisations address real world problems.
• You will develop a good understanding of data structures, database systems and procedures using a range of analytical tools, methods and systems.
• Obtain insights into the key business processes of a data consultancy, you will have the opportunity to be involved within various internal departments.
• Opportunities to extend your learning which may include attending networking events and conferences across the UK, alongside our data consultants giving you a taste of what it's like to collaborate with industry experts, expand your professional network, and stay at the forefront of cutting-edge trends!

The Interview process is made up of 3 rounds:

• Screening Interview - December 2026
• Remote, 30 minutes assessing suitability for the role, no preparation required.
• Second Round Interview - January 2027
• In person interview in Cardiff, assessing technical capabilities and how you would perform in the role - no live coding exercises.
• Final Round Interview - February 2027
• In person interview in Cardiff, presenting a data related project to a senior member of staff.

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About Butterfly Data

Butterfly Data is a small medium enterprise with a diverse team of experienced technology consultants across the UK, specialising in the data management lifecycle. We deliver solutions which include data analytics, data engineering and data science. We have a proven track record in helping our clients understand their data, allowing them to unlock its latent potential in an efficient and effective manner. Providing the following services we help organisations to put data behind every decision, enabling them to be more successful.

Butterfly Data offers a graduate scheme to motivated individuals with a passion to learn and gain experience within the world of data. You will be joining the 2026 cohort, undertaking a bespoke graduate programme, entering our consulting team as an entry level graduate. This is an exciting opportunity to dive into dynamic and diverse projects, making a real impact at organisations across both the public and private sectors.

At Butterfly, we take pride in upholding our people-centric culture that sets us apart. We are a company that has a positive impact on its employees and the wider community as demonstrated by the fact we are employee owned and B Corp. It’s incredibly important to us that our graduates are aligned to our values and purpose driven ethos.

Our commitment to our team goes beyond the daily work environment, extending into memorable experiences that foster genuine connections and camaraderie. Each year, we coordinate four company wide events that our employees can take part in. From weekends away conquering mountain peaks, participating in team-building challenges that push limits and strengthen bonds to fun-filled family days in scenic national parks. These events aren’t just calendar highlights; they’re vital opportunities to build strong working relationships, reinforce our shared work ethic, and celebrate the diverse spirit of our team. We embrace every chance to deepen our sense of unity and belonging, making our workplace not just a job, but a community where everyone thrives.

To find out more about us head to www.butterflydata.co.uk & read our attached job summary.

Requirements
What we’re looking for

• Proven capability of working with data as demonstrated in previous work or academic experience.
• Be inquisitive and logical with a creative approach to problem solving.
• Ability to work independently, take responsibility and use your initiative.
• You need to be confident, thorough and organised; communicating effectively and professionally with a range of people in secure working environments.
• Ideally a proven capability of demonstrating technological competency in using a tool or programming language of your choice.
• Desire to develop continuously and learn new skills.

Essential Requirements

• Fluent in English.
• UK resident or have the right to work in the UK.
• A numerate or technical degree, 2:1 and above.
• Lived in the UK for the past 5 years - this being an essential eligibility criteria to obtain a via UK Security Vetting.
• Willingness to undergo UK Security Vetting.

Benefits
What's in it for you?

• Entitled to 25 days leave plus the statutory public holidays, with the option to buy additional leave.
• Annual discretionary employment bonus paid in December, this is based on the company performance for the previous year and this will be a percentage of your annual gross salary.
• As an employee owned company, we also pay an ownership bonus where a proportion of the year’s profits are paid to the staff.
• 10% Employer Pension contributions without the requirement for you to match.
• Private Health Care insurance plan with additional mental health care, dental and optical packages.
• Cycle to Work scheme.
• Octopus Electric Vehicle salary sacrifice scheme.
• Work-life balance, ability to make your working hours fit around your personal commitments.

Inclusivity

Being a Disability Confident Employer shows our commitment in supporting our employees further.

• Providing reasonable adjustments where necessary.
• Covering interview travel costs.
• If you require this document in an alternative format, please contact us and we will be happy to assist you.

Pay: £31,500.00 per year

Benefits:

• Additional leave
• Bereavement leave
• Company events
• Company pension
• Cycle to work scheme
• Employee mentoring programme
• Enhanced maternity leave
• Enhanced paternity leave
• Free flu jabs
• Life insurance
• Private dental insurance
• Private medical insurance
• Sick pay

Work Location: Hybrid remote in Cardiff (Cardiff)