Salary wise GS-15 would be around L3 (junior). Responsibility wise GS-15 looks to be around L5 based on how many engineers have achieved it (I assume those ear

Salary wise GS-15 would be around L3 (junior). Responsibility wise GS-15 looks to be around L5 based on how many engineers have achieved it (I assume those earning $140k+ are GS-15): https://www.federalpay.org/employees/occupations/computer-science https://www.federalpay.org/employees/occupations/computer-sc... https://www.federalpay.org/employees/occupations/general-engineering https://www.federalpay.org/employees/occupations/general-eng...