Assistant Commercial Manager – Systems & Data

Sizewell C; Greater London; Hybrid; GBP 42,000 - 52,000; Full time

Benefits offered by this job

Bonus: 5% annual incentive

Pension: Up to 7.5% employee / 15% for

28 days holiday + bank holidays

Job summary

Sizewell C is growing its Commercial Systems, Data, Governance and Performance team in London, with roles spanning reporting, data management and system improvements for a major infrastructure programme.

The Assistant Commercial Manager will work with an experienced team to develop and enhance commercial systems, deliver robust reporting and support procurement processes across the contract lifecycle. Strong stakeholder engagement and data quality focus are essential.

Qualifications

• Graduate/postgraduate qualification related to Supply Chain or similar discipline.
• Minimum 3 years' experience in a system/performance/data management role.
• Experience developing and managing cross-functional relationships and complex portfolios.
• Proven track record delivering process and system improvements.

Responsibilities

• Develop and maintain commercial systems to support reporting and governance.
• Lead design, testing and deployment of system enhancements to meet business needs.
• Manage system access and enhancement requests while maintaining controls.
• Create training materials to help teams adopt commercial processes and systems.
• Lead responses to performance and reporting queries with clear insights.
• Collaborate across teams to improve data governance and reporting visibility.

Skills

Stakeholder relations

Communication skills

Reporting & analytics

Leadership

Influence

Presentation skills

Cross-functional collaboration

Education

Supply Chain degree

Tools

Jaggaer eSourcing

SAP S/4HANA

Oracle

CEMAR

Unifier

Job description

Sizewell C is growing its Commercial Systems, Data, Governance and Performance team in London, with roles spanning reporting, data management and system improvements for a major infrastructure programme.

The Assistant Commercial Manager will work with an experienced team to develop and enhance commercial systems, deliver robust reporting and support procurement processes across the contract lifecycle. Strong stakeholder engagement and data quality focus are essential.