TCS records 16% senior churn after 12,000 executive layoffs
Pressure grows on CEO K Krithivasan 
Recent cuts to variable payouts and company restructuring have shaken confidence inside TCS, pushing even principal and senior vice presidents to leave.
The company is also feeling the heat from losing contracts to rivals and slower tech spending globally.
With shares at a six-year low, CEO K Krithivasan faces pressure from investors.
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