TMT Technical Interview Questions

Introduction

TMT technical interviews test a broader range of knowledge than interviews for other coverage groups. In addition to the standard accounting, valuation, and M&A questions that every IB candidate must master, TMT interviews include sector-specific technical questions that require understanding of SaaS business models, media economics, telecom financial structures, and semiconductor cycles. These sector-specific questions have become the primary differentiator in TMT recruiting because most competitive candidates can answer standard technical questions correctly, and interviewers need harder questions to separate candidates. This article covers the most common TMT-specific technical questions organized by sub-sector.

Core SaaS Technical Questions

"Walk me through the key SaaS metrics and why they matter for valuation." The essential metrics are ARR/MRR (the recurring revenue base), net revenue retention (measures expansion minus churn within the existing customer base; above 120% is elite), gross margins (70-85% for SaaS), LTV/CAC (the efficiency of customer acquisition; above 3x is healthy), and the Rule of 40 (growth rate plus EBITDA margin; above 40% indicates a balanced business). "Why do we use EV/Revenue for SaaS companies instead of EV/EBITDA?" Many SaaS companies are reinvesting aggressively and have minimal or negative EBITDA, making EV/EBITDA unusable. Revenue multiples are appropriate when the company has high gross margins (indicating eventual profitability) and is in a phase where growth investment suppresses current earnings but will produce future profitability. Use NTM (next twelve months) revenue rather than LTM for high-growth companies because LTM significantly understates the current run-rate. "How does stock-based compensation affect SaaS valuation?" SBC is a real economic cost (dilution to existing shareholders) but is excluded from GAAP EBITDA. SaaS companies often have SBC representing 15-25% of revenue. When comparing companies, some analysts use "SBC-adjusted EBITDA" (subtracting SBC from EBITDA) for a more conservative profitability measure. In TMT, this debate matters because the choice of metric can change the implied EBITDA margin by 15-20 percentage points. "How does deferred revenue work in a SaaS acquisition?" Deferred revenue represents cash collected for services not yet delivered. Under acquisition accounting, deferred revenue is typically written down to fair value (the cost to fulfill the remaining obligations plus a reasonable profit margin), which is often less than the book value. This write-down reduces reported revenue in the periods following the acquisition, creating a temporary revenue "haircut" that must be adjusted for when analyzing post-acquisition financial performance.

"How do you adjust semiconductor valuations for cyclicality?" Semiconductor companies have volatile revenue and earnings due to the semiconductor cycle. Applying a peak-earnings multiple to peak earnings (or trough multiple to trough earnings) produces misleading valuations. The standard approach is to use mid-cycle or normalized earnings and apply through-cycle multiples. For AI-focused semiconductor companies (Nvidia, AMD), the valuation challenge is distinguishing between cyclical upside and structural growth, which affects whether current earnings should be normalized down or treated as the new baseline. "What is the difference between fabless and IDM semiconductor companies, and how does it affect valuation?" Fabless companies (Nvidia, Qualcomm, AMD) design chips but outsource manufacturing to foundries like TSMC. IDMs (Intel, Samsung) design and manufacture. Fabless companies have higher gross margins (60-70%+) and lower capex requirements, which supports higher revenue multiples. IDMs have lower margins but own manufacturing capacity, which creates both risk (capex intensity, technology transitions) and strategic value (supply chain control, especially relevant in the CHIPS Act context). "How does inventory analysis work for semiconductor companies?" Semiconductor inventory levels are a leading indicator of the cycle. Rising inventory-to-revenue ratios signal that supply is exceeding demand, which typically precedes pricing pressure and revenue declines. Falling inventory ratios signal tightening supply and potential upside. In an M&A context, elevated inventory may require write-down provisions in the purchase price allocation.