The salary trajectory of a an Internal Sales Engineer ranges between locations and employers. The salary starts at £28,087 per year (estimate) and goes up to £104,023 per year (estimate) for the highest level of seniority.
The estimated average salary for a Internal Sales Engineer at Computer Task Group is £29,806 per year or £14 per hour, but some professionals have reported earning up to roughly £43,034 per year (90th percentile). The typical pay range is between £24,936 (25th percentile) and £35,962 (75th percentile) annually. This is based on 1 salaries submitted by Computer Task Group Internal Sales Engineer professionals on Glassdoor, as of Jul 2026.