Commercial Management Consultant - Cost and Commercial Assurance

Assystem, Switch On; Manchester; Hybrid; GBP 40,000 - 60,000; Full time

Job summary

A leading engineering and digital services company in Manchester seeks a Cost & Commercial Assurance Consultant to enhance its Audit & Assurance team. This position involves delivering high-quality assurance work for significant UK infrastructure programs while working closely with clients and internal teams. The ideal candidate has prior experience in audit or commercial assurance within the construction sector, strong analytical skills, and proficiency in audit software. The role offers development opportunities and a culture valuing diversity and integrity.

Benefits

Hybrid working opportunities

Development opportunities

Culture valuing diversity

Qualifications

• Experience in audit, cost verification, or commercial assurance within construction or infrastructure.
• Strong understanding of NEC contracts from a cost/commercial perspective.
• Background in QS, commercial management, accounting or audit, supported by a relevant degree.

Responsibilities

• Deliver cost, commercial and contract assurance reviews on major infrastructure projects.
• Prepare high-quality audit reports with actionable recommendations.
• Build strong relationships with clients and internal stakeholders.

Skills

Audit experience

Cost verification

Commercial assurance

Large dataset analysis

Excel proficiency

IT capabilities

Attention to detail

Strong communication skills

Education

Relevant degree

Professional membership (RICS, CIMA, ACCA, AAT)

Tools

IDEA audit software

Job description

Company Description

Assystem is an international engineering and digital services company with a single mission : to accelerate the global transition to low-carbon energy.

Every day, our 8,000 “Switchers” across 12 countries bring their expertise, curiosity and collective intelligence to the challenge of the century—building a cleaner, safer and more sustainable energy future.

We work alongside the organisations driving this transition, sharing our knowledge and values to deliver innovative solutions and new ways of thinking. With more than 55 years of experience in highly regulated industries, we provide engineering, project management and digital services that enhance the performance, safety and longevity of complex infrastructure throughout its lifecycle.

Ranked among the world’s leading nuclear engineering companies, Assystem is committed to delivering a viable, efficient and reliable energy future for all.

Job Description

Our Audit & Assurance team is growing as we support an increasing portfolio of large, complex and commercially sensitive UK infrastructure programmes. We’re now looking for a Cost & Commercial Assurance Consultant to help deliver high-quality audit and assurance work and strengthen our capability as the function expands.

In this role, you’ll work closely with the Audit & Assurance Lead and wider team, carrying out cost, contract and commercial assurance reviews that give clients confidence in their project performance. You’ll analyse large datasets, apply structured audit methodologies and produce clear, evidence-based reports. Alongside delivery, you’ll play a part in shaping how our service evolves—sharing insights, supporting colleagues and helping us continuously improve.

You’ll join a community with deep expertise across the UK’s most significant infrastructure programmes. We offer hybrid working, development opportunities and a culture that values integrity, diversity and evidence-driven thinking. The role includes national travel, typically two to three nights per week.

What you’ll be doing :

• Deliver cost, commercial and contract assurance reviews on major infrastructure projects
• Analyse financial datasets, ledgers and evidence to produce clear audit findings
• Use IDEA audit software to support consistent and efficient delivery
• Prepare high-quality audit reports with actionable recommendations
• Support planning, reporting and knowledge development within the team
• Build strong relationships with clients and internal stakeholders
• Contribute to continuous improvement and mentoring across the team

Qualifications

What you’ll bring :

• Experience in audit, cost verification or commercial assurance within construction or infrastructure
• Strong understanding of NEC contracts from a cost / commercial perspective
• Confidence working with large datasets and financial information
• Excellent audit report writing and analytical skills
• Strong IT capabilities, including audit software and advanced Excel
• Background in QS, commercial management, accounting or audit, supported by a relevant degree
• Professional membership (RICS, CIMA, ACCA, AAT or similar) preferred
• High integrity, attention to detail and a completer–finisher mindset
• Flexibility to travel nationally (2-3 days per week)

Additional Information

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future