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C# Developer Salary in Seattle 2026

How much does a C# developer expect to make at Seattle-based startups? The average expected salary for C# developers in Seattle-based startups is 165k per year, with a range from 123k to 230k. These amounts were gathered from Wellfound self-reported data and represent the median salary range. The salary range for C# developers in Seattle startups varies depending on factors such as industry, experience, and startup stage.

164.5k

Average Salary

5 years

Average years of experience

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Salary

By quarter
The average salary for a C# developer in Seattle is$164,500, which is 2.9% higher than the average Seattle startup salary of $159,875. C# developer salaries in Seattle are based on exclusive Wellfound data. All data is updated on a weekly basis. Factors that may influence salary include: years of experience, title, size of company, skill-set, and industry.

Top of market

$224,200/yr

Range $217k - $230k

Average

$164,500/yr

Range $155k - $169k

Below Average

$146,400/yr

Range $123k - $169k


Industries

The highest average salary a C# developer in Seattle can get in Search, that is $253,500. This pay is 14.6% higher than the average C# developer salary, which is $221,150. The highest-paying industries in 2023 are: Search (avg $253,500 per year), Maps (avg $253,500 per year), Email (avg $253,500 per year).

Tech Stack

The top-paying developer skills of 2026 are:
  • 1. Electron

    $255k

  • 2. Keras

    $253k

  • 3. Kotlin

    $242k

  • 4. SOLR

    $239.5k

  • 5. scikit-learn

    $218.5k

  • 6. Neo4J

    $215k

  • 7. Cassandra

    $207.5k

  • 8. Nginx

    $207.5k

  • 9. Unity

    $206k

  • 10. Flutter

    $206k


Years of experience

Below Average

Average

Top of Market

The highest average salary C# developer in Seattle can get with 10+ years of experience, that is $207,500. This pay is 29.8% higher than the average salary in Seattle startups, which is $159,875. The salary range varies with years of experience and depends on other factors such as skill set, size of company, and industry.