Careers at JST Group
Join Southeast Asia's leading integrated services group. We are always looking for talented people to grow with us.
Cost & Budget Assistant Manager
Job Responsibilities : • Analyze product costing and review cost reports to ensure accuracy and reliability. • Monitor manufacturing costs and identify opportunities for cost reduction and efficiency improvement. • Prepare and present budget variance analysis reports, including key findings and recommendations • Collaborate with relevant departments to enhance cost control processes and improve overall operational efficiency. • Perform other duties and special assignments as assigned by management. Qualifications : • Bachelor's degree or higher in Accounting or relevant fields. • Experience 3-5 years in manufacturing, cost accounting, or industrial process analysis is preferred • Strong organizational and administrative skills. • Ability to prepare budgets, KPI tracking, and trend analysis. • Good command of English, both written and spoken. • Flexible, proactive, and detail-oriented. • Strong coordination skills and ability to work with all factory departments.
Assistant Driller (AD)
-BOSIET -MCU PTTEP -Valid Well Control certification (IADC or IWCF Level 3)
Product Specialist, Poultry Primary
The Opportunity ... The Product Specialist, Poultry Primary reports to Director Poultry APAC. Product Specialist has in-depth knowledge and is responsible for product sales support within the region for defined Product Group(s). The Product Specialist works towards increasing business success for the relevant products, including maximizing revenue, margin, and growth. They assist with product management duties for the relevant Product Group(s). He/she is responsible for knowledge transfer to both front line sales and back office sales support. He/she is first point of contact within the region for the Product Group(s) and drives new business development while providing sales consultancy for the relevant product family/families. Analyze customer requirements from Sales or support sales in gathering these Sales support (market penetration): Requirements: • Bachelor’s degree in Engineering or similar relevant subject, or experience equivalent to a four-year degree • Minimum of three years of relevant product-specific experience • Knowledge of sales and marketing, including marketing strategy and tactics, business to business sales techniques, budgeting, solutions and product design, market needs analysis, pricing, and competitor analysis • Expertise in training and mentoring, including excellent presentation skills, with an ability to convey an understanding of often complicated materials • Self-starter who can work independently and also team player, with the confidence to take the lead and guide others when necessary • Proven and demonstrable skills in complex product management • Excellent organizational, communication and networking skills • Previous experiences in international assignments/expatriate management preferable • Strong English skills, both written and verbal
Plant COO / Factory Operations Executive / Operations Director
Key Responsibilities • Lead factory-wide cost competitiveness improvement across manufacturing, procurement, cost control, equipment, quality, and productivity. • Identify structural cost gaps in production process, line layout, material flow, manpower, equipment utilization, maintenance, yield, and scrap. • Drive cross-functional cost reduction initiatives together with procurement, technical, production, quality, finance, and maintenance teams. • Support supplier, equipment, and process decisions by leveraging manufacturing and operations experience. • Establish governance for cost reduction pipeline, project prioritization, implementation tracking, and management decision making. • Coach management teams on low-cost manufacturing practices, productivity improvement, and factory performance management • Translate Design to Cost and Quick Win initiatives into operational execution plans and sustainable routines. Professional Skills • Tire manufacturing operations • Factory cost structure, production management, line layout, material flow, and manpower productivity • Equipment utilization, maintenance, yield, scrap, quality, and productivity improvement • Cross-functional cost reduction governance and factory performance management • Supplier, equipment vendor, and operations improvement experience • Ability to influence senior management and align production, procurement, technical, quality, finance, and HR stakeholders • Ability to lead cross-functional teams and drive execution across functions • Strong Thai and English communication capability; Japanese company experience is a plus • Diagnose factory-level cost issues and convert them into executable improvement programs • Prioritize improvement themes based on cost impact, feasibility, risk, and implementation speed • Solve structural bottlenecks across process, equipment, people, quality, and supplier constraints
Manufacturing Cost Controller / Cost Accounting Manager
Key Responsibilities • Build and maintain SKU-level tire manufacturing cost visibility, including BOM, material cost, labor cost, variable cost, fixed cost allocation, and overhead. • Analyze cost variance by product, size, material, process, production line, and supplier. • Support Design to Cost activities by identifying cost reduction levers from material usage, material grade, process cost, yield, scrap, and specification differences. • Work with production, technical, procurement, and quality teams to validate cost assumptions and quantify impact of cost-down ideas. • Benchmark internal cost structure against competitor or market references where possible, without using confidential third-party information. • Develop cost models and reporting routines to support management decisions on product profitability and cost competitiveness. • Support budget, standard cost setting, cost simulation, and financial evaluation of sourcing, material, and design changes. Professional Skills • Professional Knowledge - Manufacturing cost accounting, product costing, standard cost, and plant controlling -BOM costing, material cost, process cost, labor cost, overhead allocation, and variance analysis -Factory cost structure, yield, scrap, productivity, and cost simulation -ERP/SAP costing module, management reporting, and cost model development -Tire cost structure • Communication & Negotiation - Ability to translate financial/cost analysis into practical actions for production, technical, procurement, and management teams - Ability to challenge cost assumptions and align cross-functional stakeholders with facts - Practical communication skills in Thai and English; Japanese company experience is a plus • Problem Solving -Identify root causes of high cost by SKU, material, process, production line, and supplier -Build fact-based cost reduction hypotheses and quantify potential impact -Link cost data with practical Design to Cost and sourcing decisions Qualifications • Bachelor's degree or above, Major Accounting, Finance, Industrial Engineering, Manufacturing Management, Business Administration, or related field • Must-have: 8+ years of cost accounting, plant controlling, manufacturing finance, or product costing experience in tire industry. • Experience with tire/rubber product costing, BOM-level cost breakdown, standard cost system, ERP costing module, and cross-functional cost reduction PJs; English capability preferred
Procurement Manager / Senior Procurement Manager
Key Responsibilities: • Develop and execute sourcing strategies for tire raw materials, compounding materials, sub-materials, machinery parts, and maintenance-related categories. • Identify, screen, and develop local and regional low-cost suppliers in Thailand and ASEAN. • Lead RFI/RFQ processes, supplier benchmarking, price comparison, and commercial negotiations. • Work with technical, production, quality, and finance teams to evaluate supplier switching feasibility and qualification requirements. • Improve supplier portfolio, contract conditions, payment terms, lot size, lead time, inventory conditions, and service levels. • Support Design to Cost initiatives by providing supplier market intelligence, material price benchmarks, and alternative sourcing options. • Establish supplier management routines, including performance review, risk monitoring, and cost reduction pipeline management. Professional Skills Professional Knowledge • Tire/rubber material procurement and supplier market knowledge • RFI/RFQ, supplier benchmarking, price negotiation, and contract management • Raw materials and industrial categories such as natural rubber, synthetic rubber, carbon black, silica, oil, chemicals, steel cord, textile, spare parts, and maintenance services • Supplier development, supplier performance management, and sourcing risk management • Cost reduction, LCC sourcing, and category strategy development/ (Low-Cost Country Sourcing) • Communication & Negotiation - Strong negotiation capability with local and regional supplier - Ability to align procurement, technical, production, quality, finance, and management stakeholders - Practical communication skills in Thai and English • Problem Solving - Identify practical cost-down levers from supplier, price, contract, specification, lot size, lead time, and inventory conditions - Resolve supplier switching constraints such as quality approval, specification, delivery, and supply stability - Convert supplier market intelligence into executable sourcing actions Qualifications • Bachelor's degree or above : Major Supply Chain, Procurement, Engineering, Chemistry, Industrial Engineering, Business Administration, or related field • Must-have: 8+ years of procurement/category management experience in tire; experience in raw material or industrial category sourcing. • Preferred: Existing network with low-cost suppliers in Thailand/ASEAN; experience in tire raw materials, sub-materials, spare parts, or maintenance categories; • English communication capability preferred.
Shared Services P2P Specialist or Analyst
Summary The Shared Services Analyst (P2P) plays a critical role in supporting the efficiency and accuracy of financial operations across the APAC Shared Service Center. Reporting to the Shared Service Lead (SEA), the Analyst manages the end-to-end Procure to Pay (P2P) process, including supplier onboarding, purchase order validation, invoice processing, payment execution, and supplier reconciliation. This position requires strong analytical skills, high attention to detail, effective communication, and a proactive attitude toward process improvement. The Analyst will collaborate closely with vendors and internal teams to drive operational excellence while ensuring compliance with company policies and regulatory requirements. Requirements • A degree in Accounting/Finance is required. • At least 3 years of experience in a Finance Shared Service Center environment. Experience in a Team Lead role with O2C or P2P scopes is advantageous. • Experience in processing documentation and training delivery. • Experience with global ERP implementations and proficiency in Microsoft Excel. • Enthusiastic, self-motivated, with high energy and drive, especially when facing resistance or setbacks. • A team player with strong communication and analytical skills.
Technical Sales Engineer
Title: Technical Sales Engineer Division / Department: Sales and Marketing Division - Grid Position Report to: Energy System Solution Manager Portfolio Responsible to identify key and potential customer (domestic and region) as per the company’s direction. Closely interacting and follow up with customer on pre-bidding, bidding and turn the opportunity to become purchase order. Actively discussing with factory/vendor to find solution matching to the customer to achieve revenue targeted for grid business in Company’s MTP. Qualifications Bachelor’s degree in engineering or equivalent Working Experience 3-5 years in grid related business especially on 132kV and above of power transformer, GIS, TLA, SA, high voltage primary equipment. Experience in dealing with Power / Grid Utility company, IPP owner and EPC, familiar with organisations and bidding processes. Language Thai and English: Required (mandatory) / Chinese: Preferred Job Description - - Establish positive relationships with existing business partners to generate additional business. - - Responsible for preparing proposal and provide presentation and briefing. - - Pursuit / Connect / Develop New Business, maintain and grow established clients in targeted industry focus (Electric Utilities, EPC, etc.) - - Attend walkthroughs / onsite meeting as required to assess site condition and develop scope of work. - - Work with sales channel to schedule and visit customer actively to promote and demonstrate product and services. Assist with all technical aspect of sales calls with RFQ interviews, requirements meetings, etc. to increase winning opportunity until deal is closed - - Interpret electrical drawings, specifications and apply codes / standards to develop an optimized customized solution. - - Report on issues, successes, sales forecasting and technical needs. Maintain rolling forecast in internal system - - Continually review and revise sales channel performance and adapt where change is needed. - - Perform other duties and tasks as assigned by management from time to time. Capabilities and Requirement - - Learn and apply company standards, relevant codes and company procedures. - - Participate in training programs, knowledge sharing, and internal technical reviews. - - Collaborate closely with Engineers on assigned scopes. - - Record and manage engineering know-how, lessons learned, and technical data in the internal database. - - Strong human relationship skill in engaging with Customers, public relation. - - Statistic skill, Sales pitch to potential Customer. - - Ability with strong focus on performance results, consistently achieving sales targets . - - Understand internal business, tax, duty, forex. - -Understand INCOTERMS, Import/ Export logistic requirements, Marine Insurance, internal freight rules and codes. - - Continuous up to date with technology changes in Toshiba, competitors, market/ solutions in the market, domestic and regional statutory and requirements/ laws. - - Able to work effectively in a single contributor role and project team setting given the pressure and complexed business environment. - - Fluent and good in written English & Malay. Proficiency in Mandarin would be an advantage. -Good time management, which often involves juggling multiple contracts and deadlines simultaneously. - - Able to convey complex information in a clear and concise manner. - - Understand Power generation/ Grid business, Engineering and Commercial knowledge. - -Understand Commercial Terms and Conditions. - - Understand Commercial Risk & Analysis. - - Statistic and finance literature. - - Good in MS Office, MS Excel, MS PPT functions. - - Able to travel overseas for business trips.
Plant Engineer Position (Mechanical Eng.) (Engineering license required )
Job Summary/Responsibilities: • Study and analyze user design proposals, specifications, manuals, and other data to evaluate the feasibility, cost and maintenance requirement of design. • Recommend design modifications to eliminate machine or system malfunctions. Provide feedback to design engineer on user problems and needs. • Study, design, evaluate, install, operate, and maintain equipment systems and processes to meet requirements applying knowledge of engineering principles. • Estimate cost and submit bids for engineering, construction and prepare specification/Term ofReference/contract documents. • Conduct a study, improvement and development about machine in order to use production process. • Prepared work schedules and coordinates implementation of the mechanical projects. • Manage, supervise and monitoring vendors/subcontractor regarding the work schedule, job quality and safety. • Knowledge of HVAC System / Sanitary and Plumbing System /Piping design/Air Balance/ Fire Fighting System Qualification /Skills and experiences required: Bachelor's Degree in Mechanical Engineering • A minimum of 3-5 years of working experience in Mechanical Design Engineer • Engineering license, (Associate Mechanical Engineer) • Computer literate in Microsoft Office, Auto CAD and Solid Work. • Good oral and written knowledge of English and Thai • Experience in equipment design, construct ability, and maintenance • Has experience in Machines design/Modification/Construction mechanical works in Factory • Technical problem-solving skill, Service-minded and team work, Safety awareness and • Cooperate for achievement • Basic knowledge in IATF16949, ISO14001, ISO45001 • Able to work in Samutprakarn Province (Bangpoo Industrial Estate)
Sales Specialist
Responsibilities: - Engage with clients in the Automotive, Electrical, and Air Conditioning sectors to provide exceptional service and support. - Forecast and Purchase Order Management: Oversee the forecasting process and arrange purchase orders to ensure timely delivery of products and services. - Billing and Collection: Manage the billing process and ensure timely collection of payments to maintain healthy cash flow. Qualification: - Ideally above 30 years old - Bachelor’s degree in any field is required. Relevant fields such as Business, Engineering will be an advantage. - Language Skills: Strong English communication skills are essential; applicants should have a TOEIC score of 500 or higher. - Technical Proficiency: Proficient in Microsoft Excel and Words. - Driving Skills: Must possess a valid driving license and be comfortable driving for business purposes.
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