– 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 strong 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 current 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.





Recommend improvements in material consumption, cycle time, rejection, scrap, and manufacturing overheads.

Prepare periodic costing MIS, profitability reports, and variance analysis for management.

Maintain accurate documentation and records of costing and quotation activities.

Required Qualifications And Skills

Graduate, Diploma, or Degree in Costing, Commerce, Finance, Mechanical Engineering, Production Engineering, or a related field.

5–7 years of relevant experience in manufacturing costing.

Hands-on experience in plastic blow moulding and injection moulding costing is highly preferred.

Good understanding of plastic manufacturing processes and production operations.

Knowledge of plastic raw materials such as HDPE, LDPE, PP, PET, ABS, PC, Nylon, POM, and PVC.

Strong understanding of material consumption, yield, cycle time, machine-hour rates, mould/tooling costs, labour, power consumption, rejection, scrap, packaging, and manufacturing overheads.

Ability to read and interpret technical drawings, BOMs, and product specifications.

Excellent knowledge of MS Excel, including Pivot Tables, VLOOKUP/XLOOKUP, formulas, and costing models.

Strong analytical, numerical, communication, and coordination skills.

Ability to work independently and meet costing and quotation deadlines.

Preferred Industry Background

Candidates with experience in the following industries will be preferred:

Plastic blow moulding

Plastic injection moulding

Consumer and industrial plastic products

Electrical and electronic plastic components

Key Performance Indicators (KPIs)

Accuracy of product costing.

Timely completion of RFQ and quotation costing.

Accuracy of material and process cost calculations.

Control of actual versus standard cost variances.

Improvement in product profitability.

Implementation of cost-reduction initiatives.

Skills: pom,pp,manufacturing,nylon,calculations,product costing,ldpe,boms,pivot tables,xlookup,pc,scrap,pvc,components,pet,quotations,abs,hdpe,vlookup,injection moulding,plastic blow moulding

📌 Assistant Manager – Costing (Mumbai)
🏢 IAssess Consultants
📍 Mumbai