Top API & Integration Development Companies in Chicago, IL

We ranked 4 API and integration developers in Chicago, IL on client reviews, how many are verified, service focus and profile completeness. Updated October 2026. How rankings work

Specialists who connect the tools a business already uses, build APIs and automate the data flowing between systems.

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  1. IT consultancy offering custom software development, data engineering, AI solutions and technical training from offices across North and Latin America.

    No reviews yet

    Chicago, IL

    • Custom Software Development
    • API & Integration Development
    • AI & Automation
    Team
    1,000+ people
  2. Engineering consulting for manufacturing automation, embedded systems and custom software.

    No reviews yet

    Chicago, IL

    • Custom Software Development
    • API & Integration Development
  3. Atlanta-based AI services firm that plans, builds and governs AI systems, agents and data platforms with nearshore engineering teams.

    No reviews yet

    Chicago, IL

    • AI & Automation
    • Custom Software Development
    • API & Integration Development
  4. Chicago consultancy that builds production AI agents, RAG systems and custom software that plug into a client's existing systems.

    No reviews yet

    Chicago, IL

    • AI & Automation
    • Custom Software Development
    • API & Integration Development

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