Skip to main content
Blog
Home/

Developer Spotlight: Mark Chang, TMNAS LLC

Author Matthew Lusher
Matthew LusherSr. Programmer Writer
Summary3 min read

Mark is a solutions architect who has designed several solutions using the eSignature REST API and Docusign Connect to automate insurance document processes.

Spotlight Developer, Mark Chang

Mark Chang possesses over 20 years’ experience in application design and implementation, chiefly in the auto insurance, healthcare, and e-business industries. He specializes in enterprise systems integrations using MuleSoft as well as Microsoft integrations involving the Azure cloud computing platform. Currently, Mark is a Sr. Solution Architect - Integration at TMNA Services LLC, which delivers professional services for the North America region of the Tokio Marine Group. Tokio Marine specializes in commercial insurance solutions spanning property and casualty, professional liability, workers’ compensation, and employee benefits programs.

To streamline Tokio Marine’s various business processes for document delivery, Mark has designed several solutions using the Docusign eSignature REST API and the Docusign Connect webhook service. Mark’s solutions use the eSignature REST API to send documents to users in Docusign envelopes for soliciting policy renewals and delivering new insurance quotes. Using Connect to receive push notifications of envelope status and monitor document delivery life cycles, the solutions then use logic to track which envelopes are in progress and which are completed, and can void in-progress envelopes that are no longer valid due to business reasons.

Off work, Mark enjoys spending time with his family, hiking with his dog, and listening to classical music and other catchy pop music that his kids share with him. You can reach Mark on LinkedIn.

Author Matthew Lusher
Matthew LusherSr. Programmer Writer

Matt has been working for Docusign since 2017. As quality manager for the Docusign Developer Content and Advocacy team, Matt edits and writes content for the Developer Center and the Developer Blog. He also composes and produces the monthly Developer Newsletter. You can reach him on LinkedIn.

More posts from this author

Related posts

  • Developers

    How to call the Navigator API from Agentforce for smarter agreements

    Author Paige Rossi
    Paige Rossi
    How to call the Navigator API from Agentforce for smarter agreements
  • Configuring Salesforce for scalable and secure Docusign integrations

    Author Achille Jean Axel Nisengwe
    Achille Jean Axel Nisengwe
    Configuring Salesforce for scalable and secure Docusign integrations
  • 2025 Developer Release 1: Build faster, agree smarter

    Author Amina Atlaf
    Amina Atlaf
    2025 Developer Release 1: Build faster, agree smarter

How to call the Navigator API from Agentforce for smarter agreements

Author Paige Rossi
Paige Rossi
How to call the Navigator API from Agentforce for smarter agreements

Configuring Salesforce for scalable and secure Docusign integrations

Author Achille Jean Axel Nisengwe
Achille Jean Axel Nisengwe
Configuring Salesforce for scalable and secure Docusign integrations

2025 Developer Release 1: Build faster, agree smarter

Author Amina Atlaf
Amina Atlaf
2025 Developer Release 1: Build faster, agree smarter

Discover what's new with Docusign IAM or start with eSignature for free

Explore Docusign IAMTry eSignature for Free
Person smiling while presenting