The salary trajectory of a Software Development Engineer III ranges between locations and employers. The salary starts at £54,755 per year (estimate) and goes up to £113,508 per year (estimate) for the highest level of seniority.
The estimated average salary for a Software Development Engineer III at Capital One is £178,444 per year or £86 per hour, but some professionals have reported earning up to roughly £253,259 per year (90th percentile). The typical pay range is between £150,397 (25th percentile) and £214,977 (75th percentile) annually. This is based on 9 salaries submitted by Capital One Software Development Engineer III professionals on Glassdoor, as of Jun 2026.