Find the Best API Jobs in St. Louis, MO

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Check out a sample of the 3 API jobs posted on Upwork

Less than 30 hrs/week
Hours needed
Less than 1 month
Duration
Expert
Experience level

Need API or Zapier integrations for my online systems/accounts Google/Gmail/Calendar WordPress Jobber Jobber Payments PipeDrive JustCa…

APIAPI IntegrationAPI DevelopmentAutomationAPI JobsZapier
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Senior Full-Stack Developer

Hourly ‐ Posted 9 days ago
30+ hrs/week
Hours needed
More than 6 months
Duration
Intermediate
Experience level

Location: Remote Team size: Small (you’ll know everyone’s name) Stack: Java 21 / Guice / Gradle backend + React 19 / TanStack / MUI…

APIAPI JobsClaudeGitHubGradleJava
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$500
Fixed-price
Intermediate
Experience level

Are you a backend engineer who enjoys debugging, improving existing systems, and completing real product features in a fast-moving star…

APIAPI DevelopmentAPI IntegrationAPI JobsNode.jsTypeScript
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