Job Description – Assistant Manager – Costing

Industry: Plastic Blow Moulding, Injection Moulding & Manufacturing

Location: Mumbai, Maharashtra

Experience: 5–7 Years

Employment Type: Full-Time

Job Summary

We are looking for an experienced Assistant Manager – Costing with hands-on knowledge of plastic blow moulding and injection moulding processes. The candidate will be responsible for product costing, commercial quotations, material consumption analysis, machine-hour rate calculations, tooling cost evaluation, and cost optimization to improve product profitability.

The ideal candidate should have robust analytical skills, a sound understanding of plastic manufacturing processes, and excellent Excel skills.

Key Responsibilities

Prepare detailed product costing and commercial quotations for blow-moulded and injection-moulded plastic components.

Calculate product costs, including raw materials, material yield, cycle time, machine-hour rates, power, labour, rejection, scrap, packaging, tooling, and manufacturing overheads.

Prepare costing for new products,



development projects, customer RFQs, and existing products.

Review customer drawings, technical specifications, BOMs, and product requirements.

Calculate material consumption, process loss, runner/sprue consumption, and rejection percentages wherever applicable.

Evaluate mould and tooling costs, including tooling amortization and recovery.

Develop and maintain standard costing sheets and product-wise costing databases.

Coordinate with Production, Purchase, Tool Room, Quality, Engineering, Stores, and Sales teams to collect accurate costing inputs.

Analyze actual versus standard costs and identify cost variances.

Monitor changes in raw material prices, machine rates, labour costs, electricity charges, tooling, and overheads.

Support the Sales and Commercial teams in customer quotations and price negotiations.

Identify and implement cost-reduction and value-engineering opportunities.

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