Assistant Accountant

The Geotechnical Sub Alliance (GSA) is at the forefront of the Sizewell C nuclear power station development - one of the UK’s largest and most exciting infrastructure programmes.

We’re responsible for preparing the foundations of the entire site: designing and constructing cut‑off walls, retaining structures, soil improvements and more. Using advanced geotechnical engineering and world‑class construction technologies, this is a rare opportunity to contribute to a national project that will shape the UK’s clean‑energy future.

We are seeking a reliable and detail-oriented Assistant Accountant to support the day-to-day bookkeeping and finance administration activities.

The successful candidate will play a key role in maintaining accurate financial records, processing transactions, and supporting the finance team in ensuring timely reporting, reconciliations, and audit readiness across the business.

• Maintain accurate, well‑organised, and up‑to‑date financial records.
• Process and track invoices, receipts, purchase orders, and expense claims.
• Support accounts payable activities, including supplier payments and refunds.
• Assist with payroll administration and related financial processing.
• Perform monthly reconciliations of accounts and investigate discrepancies.
• Prepare financial records and supporting documentation for audits.
• Ensure financial records comply with company procedures and relevant financial regulations.
• Identify errors, missing information, or irregularities and escalate appropriately.
• Use accounting and finance software to input, manage, and retrieve financial data.
• Support continuous improvement of finance administration processes.

• Previous experience in an accounts, finance, or bookkeeping role.
• Good understanding of basic accounting principles and financial controls.
• Experience using accounting software and Microsoft Excel.
• Strong attention to detail with a high level of numerical accuracy.
• Well organised, reliable, and able to manage routine tasks effectively.
• Clear written and verbal communication skills.
• Ability to handle confidential financial information with discretion.
• Experience in construction, engineering, or project‑based environments is an advantage.
• Candidates must have the legal right to work in the UK at the time of application.

When you join the world’s largest specialist geotechnical contractor, you’re part of an international community of over 10,000 experts, based in 31 countries around the world. You’ll have the opportunity to contribute to prestigious, ground‑breaking projects, using the very latest tools and technology to solve complex problems, constantly learn new skills and take your career in any direction.

As well as being part of a landmark project and working in a collaborative alliance environment, we offer:

• Discretionary annual bonus (based on personal/project performance)
• Salary Sacrifice Pension Scheme (min. 5% company contribution)
• Enhanced Sick Pay (after probation)
• Income Protection, Private Medical Insurance and Life Assurance
• Employee Assistance Programme
• 25-days annual leave + Bank Holidays per year (increasing with service)
• Option to purchase additional annual leave
• Paid annual professional memberships
• Volunteering days
• Professional growth and development

Bachy Soletanche is committed to equal opportunities in employment with the aim of ensuring that everyone who applies to work for us receives fair treatment. We positively encourage applications from suitably qualified and eligible candidates regardless of age, disability, ethnicity, sex, gender identity, sexual orientation, religion or belief and pregnancy/maternity.