Top Backend Development Companies in Washington

3 companies ranked by verified client reviews, ratings & recency.
Updated October 2026

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5.0· 44 reviews5.0

Verified company

Team

11–50

Location

Portland, United States

Trusted by 8 notable brands

“They're amazing to work with, and have been very on point. The team is very responsive to our needs.”

— Cindy Wishon, Krispy Krunchy Foods

11–50Portland, United States

Slashdev.ioVerified company

5.0· 18 reviews5.0

Verified company

Expert Engineers, Unrivaled Value The Top 1% Of Software Professionals

TeclaVerified company

4.9· 19 reviews4.9

Verified company

Staffing for the AI era. Leaders, engineers, and nearshore teams — one partner.

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