Five9

Five9 is a cloud-based call center software company that specializes in sales, marketing, and customer service. The job it does: building software for you when nothing off the shelf fits.

The natural audience is companies with a specific process to automate. Related areas on their profile: Call Center, Customer Service and Sales. They are a large team, 1,001 to 5,000 people, which usually shapes who they work with. At that size expect formal onboarding, documentation and a longer sales cycle.

Five9 is based in San Ramon, California and around since 2001. Their site is five9.com.

Our checklist for this category: portfolio relevance, who owns the code, and how they handle changes. Get the renewal terms in writing before the first invoice.

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