Welcome to Tessella UK







Tessella was founded in the UK in 1980. We have grown to become a global leader in data science and AI consulting. In the UK, we solve complex, real-world problems for clients across a wide variety of sectors, including life sciences, energy and consumer goods and engineering.


We have over 200 staff in the UK, based in 4 offices that are strategically located to serve our clients:

  • Abingdon, Oxfordshire
  • Ashby-de-la-Zouch, Leicestershire
  • Stevenage, Hertfordshire
  • Warrington, Cheshire

Tessella HQ and the central head office functions are based in Abingdon, including HR, Recruitment, Finance, Sales and Marketing.

Coming from a very independent PhD, the culture of collaboration and knowledge sharing was very refreshing. I'm frequently pushed just beyond my comfort zone, but there's always a safety net of people to help. You're encouraged to highlight gaps in your knowledge and ask for help or training when needed.

- Sarah



In the UK, we recruit STEM graduates and postgraduates throughout the year to join our teams working in data science, AI and scientific software solutions.

We also have vacancies for more experienced technical and commercial professionals.

UK vacancies

Training + Career Development

We take training and development seriously.

20 Days

In the UK, all technical staff receive an annual training allowance of 20 days. You will have an individual training plan to learn new technical and soft skills, often leading to professional qualifications.

Training can take many different forms including taught courses, self study, mentoring, conferences and workshops.


Cortex is an initiative dedicated to the acceleration of AI capabilities and enables individuals to expand their knowledge base and improve their skills in the field.

Staff can apply to take time away from project work and build skills and practical experience in cutting-edge machine learning methods and technologies.

Learn more

Choose Your Path

You will be encouraged and supported to tread your own career path based on your aspirations and shaped by the skills you develop and the projects you work on.

We offer excellent future prospects, whether your path is weighted towards technical, project management, consultancy or something else. You are sure to find a rewarding career to match your ambitions.


Tessella’s excellent training programme enhanced my skills in a variety of technologies allowing me to work on everything from cutting-edge web applications to large oil reservoir modelling packages.

- Elena
Data Science Consultant


UK Benefits

We are proud to reward staff and look after their wellbeing with a competitive remuneration and benefits package.

Health & Wellbeing

Mental health is as important to us as physical health. We support every employee and offer a range of resources to help:

  • Access to 24/7 online doctor
  • Critical illness cover
  • Employee assistance helpline
  • Generous sick pay benefits

Core Benefits

All staff receive a competitive remuneration package, including core benefits:

  • 25.5 days holiday + Bank Holidays
  • 9% employer pension contributions
  • Enhanced parental leave pay
  • Life assurance
  • ...and more

Flexible Benefits

In addition to our core benefits, staff can choose from a range of flexible benefits to fit their needs, including:

  • Holiday trading (buy/sell up to 5 days)
  • Cycle to work scheme
  • Private healthcare
  • Discount shopping scheme
  • ...and more

The best thing about working here? A culture of doing the right thing for both clients and staff, which is the lifeblood of the company.

- Andrew
Data Science Consultant

Social Life + Corporate Social Responsibility

We believe that making a profit and growing our business goes hand in hand with responsibilities to our local communities, the environment, our employees and our clients. We engage in activities outside of work to bring staff together.

Annual Events

Tessella holds an annual, carbon-neutral conference where staff from all geographies get together for a week of knowledge sharing, training and social events.

In the UK, we also organise an annual dinner for staff and +1s to attend. These are weekends away with a black tie dinner, all paid for by Tessella.

Sports & Social

Every office has its own company-subsidised, staff-led sports and social committee. Events are organised throughout the year, catering to all tastes from lunchtime sports and language clubs to theatre trips and photography competitions.

Charity & Community

We support and encourage all of our staff to engage with their local communities. All offices hold community days where we help give something back.

We also offer financial donations to staff involved in charitable events.

Frequently Asked Questions

Does Tessella sponsor visas for international candidates?

Currently Tessella is unable to employ candidates who require sponsorship to work in the UK. However, we very much welcome international applicants who have or can obtain working rights independently of Tessella.

Does Tessella offer internships or work experience?

We have limited opportunities for internships and work experience due to the client-based and confidential nature of our work. We typically offer one or two per year, arranged in collaboration with specific university departments.

What is the recruitment process?

The process is tailored to different vacancies, but in general these are the steps we follow.

1. Application. The recruitment team reviews applications against current requirements. We will contact you as soon as possible to let you know how your application is progressing.

2. First Interview. The first step is an online video call to find out more about you, tell you more about Tessella and see if we have enough in common to progress to the next stage.

3. Second Interview. If selected, you will be invited to visit one of our offices for a half to full day, depending on the role. You will meet a range of Tessella staff and complete relevant activities to allow us the opportunity to find out more about you, and to give you a feel for what it is like to work here. 

4. Offer. If the second interview goes well, we would aim to make a job offer within 1-2 weeks.