The salary trajectory of a Systems Integration Engineer ranges between locations and employers. The salary starts at £45,233 per year (estimate) and goes up to £50,877 per year (estimate) for the highest level of seniority.
The estimated average salary for a Systems Integration Engineer at BAE Systems is £145,527 per year or £70 per hour, but some professionals have reported earning up to roughly £222,881 per year (90th percentile). The typical pay range is between £117,211 (25th percentile) and £182,635 (75th percentile) annually. This is based on 32 salaries submitted by BAE Systems Systems Integration Engineer professionals on Glassdoor, as of Jun 2026.