Chess Engineering is a CC3-certified, triple-ISO accredited steel fabrication and mechanical engineering business based in Welshpool, WA. We manufacture complex structural and mechanical equipment for Tier-1 mining and infrastructure clients across Western Australia and nationally. We are seeking an experienced Senior Estimator to lead our estimating function, with a strong background in OEM manufacturing, fixed plant equipment, and engineered products. The Role As Senior Estimator, you will be responsible for leading all estimating and tendering activities for OEM-manufactured equipment and fabricated assemblies. This is a senior, hands-on role suited to someone who understands how equipment is actually built on the shop floor and priced accordingly. You will manage your own tender accuracy and on-time performance and work closely with operations to ensure estimates are buildable, competitive, and commercially sound. Key Responsibilities Lead the estimating function for OEM-manufactured equipment and fabricated products Prepare and review detailed cost build-ups covering materials, labour, surface treatment, transport, and risk Ensure 100% on-time tender submissions with clear assumptions, exclusions, and clarifications Review drawings, specifications, and scopes to identify risks and value-engineering opportunities Work closely with production, procurement, and project teams to ensure pricing reflects real manufacturing outcomes Maintain and improve estimating systems, rate libraries, and templates Support post-tender clarifications and commercial negotiations About You Extensive experience in estimating for OEM manufacturing, fixed plant, bulk materials handling, or mechanical equipment Proven ability to manage multiple tenders concurrently Strong understanding of workshop fabrication, machining, welding, and assembly processes Commercially astute, detail-driven, and comfortable owning pricing decisions Strong Excel and estimating system capability What We Offer Senior role within a stable, growing WA-based manufacturer Direct influence on pricing strategy and workload pipeline Competitive salary package commensurate with experience Long-term career opportunity within a business investing in systems and capability#J-18808-Ljbffr