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Job Requirment

  • Position:

    Costing Manager

    Occupation:

    Accounting

    Sub Occupation:

    Accounting

  • Position:

    Costing Assistant Manager

    Occupation:

    Accounting

    Sub Occupation:

    Accounting

Job Location

Bangkok (All)

Latest Salary

60,000 - 65,000 THB

Job Type

Full time

Availability

within 30 days

Working Bangkok

Yes

Education

2015 - Rajapruk university

Faculty:Accounting
Major:Accounting
GPA 2.2 - Bachelor's Degree

Experience/ Internship

October 2016 toFebruary 2024  (7 Year 4 Month)
  • Last Position:
  • Assistant Costing Manager
  • Business Type:
  • Garment Industry

Job Description

  • Oversaw company-wide inventory governance across warehouses, retail shops, and modern trade channels, ensuring high accuracy, compliance, and operational integrity through advanced controls and NAV-based monitoring.
  • Strengthened stock accuracy by executing structured cycle counts, variance root-cause investigations, and system-driven reconciliation in NAV. Reduced recurring variances through cross-functional corrective action plans.
  • Led monthly product costing and cost sheet closing using Microsoft Dynamics NAV, including DL & OH allocation, cost roll-up validation, WIP valuation, and automated reconciliation between NAV sub-ledgers and GL.
  • Enhanced costing accuracy by configuring and maintaining NAV Item Costing, BOM/Route data, posting setups, and inventory valuation methods (Standard/Weighted Average) to ensure accurate COGS and margin reporting.
  • Developed and delivered monthly performance dashboards (Inventory, COGS, Gross Profit, variance drivers) using NAV data extraction and analytical modeling to provide clear business insights for senior management and BOD.
  • Managed provisions and financial adjustments for inventory aging, NRV, obsolete items, warranty reserves, and operational allowances, ensuring complete alignment between NAV data, accounting standards, and external audit requirements.
  • Acted as primary contact for external (KPMG) and internal (VRIA) audits, prepared NAV-based audit schedules, provided system evidence, and resolved audit queries with minimal findings.
  • Coached and developed team members, implemented SOP improvements, strengthened internal controls, and optimized inventory/costing workflows within NAV to enhance automation and reduce manual interventions.
  • Monitored RM, PG, WIP, and FG movement in NAV; performed trend & variance analysis; and collaborated with Production/Planning to ensure accurate month-end processing and valuation.
  • Improved data reliability by designing NAV queries, adjusting posting setups, validating item ledger entries, and supporting master data governance to minimize system errors and improve process efficiency.
March 2014 toPresent  (11 Year 10 Month)
  • Last Position:
  • Costing supervisor
  • Business Type:
  • Manufacture and distributor.

Job Description

  • Led month-end and year-end closing processes, including P&L analysis, manufacturing variance review, and cost reconciliation to ensure accurate and timely financial reporting.
  • Prepared monthly management reports: product costing analysis, manufacturing cost statements, variance by material group, production volume analysis, and consolidated variance reporting.
  • Reviewed and analyzed manufacturing expenses (COGS, overhead absorption, material variances) to ensure accounting accuracy and compliance with internal financial controls.
  • Performed standard cost updates for existing and new finished goods; reviewed Bills of Materials (BOM), routing, and cost roll-up accuracy.
  • Validated Production Orders, Work-in-Process (WIP), and month-end Oracle closing cycles; monitored production transactions to ensure alignment with actual shop-floor activities.
  • Ensured accuracy of Accrued Expenses, Goods-in-Transit (GIT), FOC adjustments, and JV entries for period-end adjustments.
  • Delivered Total Product Costing, Actual Cost vs Standard analysis, and inventory valuation review to management with clear insights for decision making.
  • Experienced in Oracle CO / MM / PP modules: month-end closing, cost roll-up, WIP settlement, production order review, and variance analysis.
  • Collaborated with cross-functional teams (Production, Planning, Warehouse, IT) to improve data accuracy and cost flows in Oracle.
  • Supported improvements in costing processes including BOM accuracy, routing standardization, production confirmation, and material movement alignment.
  • Strong capability to transition and adapt costing flows into ORACLE and SAP CO/MM/PP environments (cost roll-up, BOM/routing alignment, production order settlement, overhead allocation).
  • Hands-on experience identifying data inconsistencies and proposing system/process fixes to enhance costing accuracy and transparency.

Hard Skill

  •  - Ms Word / Experienced
  •  - Ms Excel / Expert
  •  - โปรแกรมบัญชี Express / Experienced
  •  - Ms PowerPoint / Experienced
  •  - Teamwork / Expert
  •  - Power BI  / Skillfull
  •  - Computer  / Expert
  •  - Problem solving / Expert
  •  - Attention to Detail / Experienced

Soft Skill

  •  - Standard Costing
  •  - Cost Roll-up (BOM/Routing)
  •  - Manufacturing Costing
  •  - COGS & Margin Analysis
  •  - DL/OH Allocation
  •  - Inventory Valuation & Reconciliation
  •  - Variance Analysis (Material / Production / Overhead)
  •  - Oracle CO / MM / PP (Advanced) SAP CO / MM / PP (User Improv
  •  - Power BI (Dashboard & DAX basic) Excel Advanced (Pivot, Powe
  •  - Team Leadership & People Development Cross-functional Collab

Language skills

  • Speaking

  • Listening

  • Reading

  • Writing

  • Thai
  • Excellent
  • Excellent
  • Excellent
  • Excellent
  • English
  • Medium
  • Medium
  • Good
  • Good

Typing Skills

  • Thai : 30 words / min
  • English : 30 words / min
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