Jacobs Jobs

Job Information

Jacobs Senior Geochemical Modeller in Didcot, United Kingdom

Your Impact:

At Jacobs, we'll inspire and empower you to deliver your best work so you can evolve, grow and succeed – today and into tomorrow. With more than 55,000 people in 40+ countries, working at Jacobs offers an exciting range of opportunities to develop your career within a supportive and diverse team who always strive to do the right thing for our people, clients and communities.

People are Jacobs’ greatest asset, and we offer a competitive package to retain and attract the best talent.

In addition to the benefits you’d expect, UK employees also receive free single medical cover and digital GP service, family-friendly benefits such as enhanced parental leave pay and free membership of employee assistance and parental programmes, plus reimbursement towards relevant professional development and memberships. We also give back to our communities through our Collectively program which incorporates matched-funding, paid volunteering time and charitable donations.

Work-life balance and flexibility is a key focus area for Jacobs. We’re happy to discuss hybrid, part-time and flexible working hours, patterns and locations to suit you and our business.

About the Opportunity

Jacobs is currently recruiting for a Senior Geochemical Modelling Consultant to join our Radioactive Waste Management and Disposal business. You will be part of a multi-disciplinary team (including chemists, physicists, geologists, engineers, safety case specialists and mathematicians) to deliver a range of projects on behalf of UK-based and international customers. We provide consultancy, modelling, safety case and laboratory studies to underpin the science, technology and engineering to allow the safe management and disposal of radioactive waste.

You will be involved in delivering an exciting and diverse range of projects undertaken for our customers in the UK and overseas. You will focus on the development of chemical models associated with the disposal of radioactive wastes, including their chemical interactions with groundwater, backfills, encapsulants and other components. You will also provide support to other decommissioning projects.

This exciting post offers you the opportunity to apply your skills to solving real world problems for our customers and provides an excellent opportunity for those wishing to develop their careers in our technically and commercially challenging business.

Key Responsibilities include:

As a Geochemical Modeller, you will work on a range of consultancy projects for customers including radioactive waste producers, radioactive waste management organisations and regulators, both in the UK and overseas. This will include a wide variety of activities including:

  • Provision of input to a range of technical areas; this is likely to include chemical modelling, and other forms of simple and complex geochemical modelling

  • Providing leadership to junior staff working in these areas

  • Production of concise and well-written technical reports that effectively communicate detailed geochemical information to non-specialists

  • Developing an understanding of the underlying requirements of our clients, and how we can meet them

  • Analysing problems, developing solutions and delivering work to agreed timescales

  • Supporting other team members with business development activities

Here’s What You’ll Need:

Experience / Skills:

  • A degree in geology / chemistry / geochemistry, preferably with a higher degree involving significant aspects of environmental geochemistry and/or hydrogeochemistry

  • A good understanding of geochemistry, geology, and mineralogy

  • At least 5 years post-graduate experience’ in the development and application of chemical models, including hydrogeochemical and reactive transport modelling

  • Technically able, with a demonstrable track record of creative problem solving

  • Excellent written and verbal communication skills

  • Flexible, innovative and keen to develop skills

  • Adaptable and able to work on a variety of projects, prioritising as appropriate

  • Able to work in multi-disciplinary teams

  • Enthusiasm to apply skills to the solution of real-world problems

  • Will need to be able to obtain appropriate security clearance


  • A PhD in chemistry, environmental chemistry, geochemistry or geoscience

  • Experience working on problems relevant to the management and disposal of radioactive wastes

  • Experience in the development of chemical models for the prediction of interactions of contaminants with groundwater, engineered barriers and geological materials

  • Understanding of the chemical behaviour of radioelements and non-radiological contaminants under disposal conditions

  • Experience in the analysis of large geochemical datasets

  • Experience performing laboratory experiments studying sorption, solubility and diffusion of contaminants, under conditions relevant to safety assessment for waste disposal facilities

  • Experience of scientific programming (e.g. Python, MATLAB)

Our Culture

Our values stand on a foundation of safety, integrity, inclusion and diversity. We put people at the heart of our business and we truly believe that by supporting one another through our culture of caring, we all succeed. We value positive mental health and a sense of belonging for all employees. Find out more about life at Jacobs.

We aim to embed inclusion and diversity in everything we do. We know that if we are inclusive, we’re more connected, and if we are diverse, we’re more creative. We accept people for who they are, regardless of age, disability, gender identity, gender expression, marital status, mental health, race, faith or belief, sexual orientation, socioeconomic background, and whether you’re pregnant or on family leave. This is reflected in our wide range of Global Employee Networks centred on inclusion and diversity – ACE, Careers, Enlace, Harambee, OneWorld, Prism, Vetnet, and Women’s – find out more about our employee networks here.

Jacobs partners with VERCIDA to help us attract and retain diverse talent. For greater online accessibility please visit www.vercida.com to view and access our roles. As a Disability Confident employer, we will interview all disabled applicants who meet the minimum criteria for a vacancy. We welcome applications from candidates who are seeking flexible working and from those who may not meet all the listed requirements for a role

If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team.

Your application experience is important to us and we’re keen to adapt to make every interaction even better. We welcome feedback on our recruitment process and if you need more from us before deciding to join Jacobs then please let us know.