Systems Engineer salary at Loudoun County

The average systems engineer salary at Loudoun County was $115,456 , which is 15 percent higher than the average salary for this job in Virginia, and 34 percent higher than the national average for this job . Systems Engineer salaries at Loudoun County typically range from $110,775 to $126,133 (25th to 75th percentile). The highest reported systems engineer salary was $126,133. There are 9 employees at Loudoun County with the job title systems engineer.