Software Development Engineer (co-op) Salary in Seattle, WA.
Updated on: Jan 21, 2026
How much does a Software Development Engineer (co-op) make in Seattle, WA?
The average Software Development Engineer (co-op) in Seattle, WA makes $125,555,
51% above the national average Software Development Engineer (co-op) salary of $83,011.
This pay is 19% greater than the combined average salaries of other metroes San Jose, CA, Portland, ME, and Oklahoma City, OK.
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Software Development Engineer (co-op) Salary Average
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*Data is estimated and depends on the generous anonymous contributions of individuals