The culture seems to encourage the exclusion of technical staff from planning and strategy meetings. Technical staff are encouraged to keep their head down, even too much, to deliver on promises they often are not involved in making. This tends to lead to burnout and some turnover, especially given they don't offer much of a bonus plan or equity for people that aren't managers. If you demand long hours and hard work you must provide better incentives or you will continue to lose your best people. The cheaper option would be to change the culture and allow technical staff, in particular senior individual contributors, a seat at the table when any planning is being done, or promises are being made.
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