The estimated average salary for a Technical Support Engineer-3rd Line at Applied Systems is £37,160 per year or £18 per hour, but some professionals have reported earning up to roughly £56,407 per year (90th percentile). The typical pay range is between £30,369 (25th percentile) and £45,965 (75th percentile) annually. This is based on 3 salaries submitted by Applied Systems Technical Support Engineer-3rd Line professionals on Glassdoor, as of Jul 2026.