Hartwell Manufacturing is a family-run engineering business with nearly 50 years of experience delivering high-quality acoustic enclosures and heavy steel fabrication projects. Operating from its Ossett headquarters with additional manufacturing sites in Sheffield and Bradford, the business supports clients across the power, data centre and industrial sectors and is known for its hands-on, operational culture. The Role Hartwell Manufacturing is seeking a Production Planner to take ownership of the weekly production schedule across three manufacturing sites. The role works closely with Site Managers and Operations teams to ensure production plans are realistic, resources are aligned and delivery commitments are met. A key part of the role is monitoring labour hours against quoted allowances and highlighting risks to cost, efficiency and programme. Key Responsibilities Create, maintain and issue the weekly production schedule across all three sites Liaise with Site Managers and Production Supervisors to confirm capacity and labour availability Balance customer demand with production capability when building schedules Monitor progress against plan and adjust schedules due to breakdowns, labour shortages or material issues Communicate programme changes clearly to relevant stakeholders Track actual labour hours against quoted or planned allowances Identify trends, variances or inefficiencies and escalate where required Highlight risks to programme, cost or ..... full job details .....