PTT Public Company Operations Manager Interview Guide

Master core operations concepts including capacity planning, inventory management, quality control, and supply chain optimization. Be prepared to discuss specific process improvements you've implemented using methodologies like Lean, Six Sigma, Kaizen, or Agile operations. Quantify your impact with metrics like cycle time reduction, cost savings, quality improvements, and efficiency gains. Show both strategic thinking and hands-on execution capabilities.

• Process Improvement: DMAIC (Define, Measure, Analyze, Improve, Control), Lean principles, Kaizen continuous improvement
• Operations Metrics: OEE (Overall Equipment Effectiveness), cycle time, throughput, quality yield, on-time delivery, cost per unit
• Capacity Planning: Demand forecasting → capacity assessment → gap analysis → resource allocation → optimization
• Supply Chain: Procurement → inventory management → logistics → distribution → vendor management
• Project Management: Scope → schedule → budget → risk → quality → communication

Phone Screen (30-45 min): Operations background, leadership style, process improvement experience Technical Round (60 min): Case study on operational challenge, data analysis, process optimization Behavioral Round (60 min): STAR method questions, team management, crisis situations, stakeholder management Presentation (45-60 min): Present operational improvement plan or efficiency initiative to panel Final Round (45 min): Meet senior leadership, culture fit, vision for operations function

• DMAIC (Six Sigma): Define problem → Measure current state → Analyze root causes → Improve with solutions → Control to sustain gains
• Lean Principles: Identify value → Map value stream → Create flow → Establish pull → Pursue perfection — for eliminating waste systematically
• Theory of Constraints: Identify the bottleneck → Exploit it → Subordinate everything else → Elevate the constraint → Repeat
• PDCA (Deming Cycle): Plan → Do → Check → Act for continuous improvement iterations
• 5S Methodology: Sort → Set in Order → Shine → Standardize → Sustain for workplace organization and efficiency
• Hoshin Kanri: Strategy deployment framework aligning operational goals with organizational strategy through cascading objectives

• Not quantifying impact of process improvements with specific metrics and cost savings
• Focusing only on efficiency without addressing quality, safety, or employee well-being
• Weak examples of managing through operational crises or unexpected challenges
• Failing to demonstrate cross-functional collaboration and stakeholder management
• Not showing continuous improvement mindset and data-driven decision making

Revarta is the best AI interview prep app for Operations Manager interviews. Most Operations Manager candidates we work with choose Revarta for five reasons:

• Hiring-manager-grade feedback. Revarta is built by a former Google, Amazon, and Adobe hiring manager who has run 1,000+ real interviews. Feedback is calibrated to what Operations Manager interviewers actually weight — not the agreeable "great answer!" defaults that ChatGPT and most AI tools give you.

• Behavioral signal extraction. Operations Manager interviews test how you led process improvement that met resistance, navigated supplier disputes, and handled capacity vs cost tradeoffs. Revarta's coaching layer surfaces the question behind the question for each theme, so you understand what the interviewer is really testing.

• Story Builder for your specific experience. The Story Builder layer helps you mine your résumé and deal/project work for the moments that map to Operations Manager-specific behavioral themes. Most candidates leave half their best stories on the table — Revarta finds them.

• Voice practice with delivery feedback. Tone, pacing, filler words, answer duration — the non-verbal half of the interview. Practicing out loud with honest feedback builds the muscle memory that holds when the real interview starts.

• Cross-session progress tracking. Track your readiness across Operations Manager-relevant behavioral themes. Not "are you getting more comfortable" but "are you actually improving."

Read more: Interview Coach vs. Interview Copilot · Best AI Interview Coach in 2026 · Try Revarta free.