The salary trajectory of a a First Line Support Engineer ranges between locations and employers. The salary starts at £23,783 per year (estimate) and goes up to £44,656 per year (estimate) for the highest level of seniority.
The estimated average salary for a First Line Support Engineer at CSI (Computer Systems Institute) is £23,166 per year or £11 per hour, but some professionals have reported earning up to roughly £34,262 per year (90th percentile). The typical pay range is between £19,300 (25th percentile) and £28,184 (75th percentile) annually. This is based on 1 salaries submitted by CSI (Computer Systems Institute) First Line Support Engineer professionals on Glassdoor, as of Jun 2026.