Senior Integration Developer / API Developer

DELIVERY CONSULTANT; Auckland; On-site; NZD 90,000 - 120,000; Full time

Job summary

DELIVERY CONSULTANT in Auckland, New Zealand is seeking a Senior Integration Developer to lead hands-on API integrations. The contract role focuses on connecting Microsoft Dynamics 365 CE with an external platform, handling data transformation and robust error handling.

Expect a pragmatic, detail-oriented developer who thrives on troubleshooting complex integrations. Responsibilities include building and supporting system-to-system integrations, working with REST, JSON, OAuth2 and JWT, and

Qualifications

• Experience designing, developing and consuming REST APIs.
• Strong JSON data mapping and transformation skills.
• Experience with OAuth2, API Keys and JWT authentication.
• Proven API integration troubleshooting and debugging ability.
• Experience with asynchronous processing and error handling.
• Hands-on with Microsoft Dynamics 365 CE and Dataverse.
• C# or .NET development background.

Responsibilities

• Develop and support system-to-system integrations across REST APIs.
• Transform data and mapping between Dynamics CE and external platforms.
• Troubleshoot integrations and ensure reliable API-based solutions.
• Work across authentication methods and asynchronous processes.

Skills

REST APIs

JSON payloads

OAuth2

API Keys

JWT

API troubleshooting

Async processing

C# / .NET

Dynamics 365 CE

Dataverse

Power Platform

Azure

Tools

Microsoft Dynamics 365 CE

Dataverse

Power Platform

Azure

Job description

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DELIVERY CONSULTANT – Auckland, North Island

Senior Integration Developer (API Developer) | Contract (6month) | AucklandWe’re looking for an experienced Senior Integration Developer / API Developer to join our client on a hands-on integration project connecting Microsoft Dynamics 365 CE with an external platform.

About the role

In this role you’ll be responsible for developing and supporting system-to-system integrations, working across REST APIs, data transformation and Dynamics CE. The integration will operate in both directions: extracting and transforming data from Dynamics CE for external APIs, and bringing status and completion data back into CE.

This is a practical development role suited to someone who is comfortable getting into the detail, troubleshooting integrations and delivering reliable API-based solutions.

About you

You’ll bring:

• Proven experience designing, developing and consuming REST APIs
• Strong understanding of JSON payloads, data mapping and transformation
• Experience with authentication including OAuth2, API Keys and JWT
• Strong API integration troubleshooting and debugging capability
• Experience with asynchronous processing, logging and error handling
• Ideally, hands-on experience with Microsoft Dynamics 365 CE and Dataverse

• Strong C# / .NET development experience
• Proven experience designing, developing and consuming REST APIs
• Strong understanding of JSON payloads, data mapping and transformation
• Experience with authentication including OAuth2, API Keys and JWT
• Strong API integration troubleshooting and debugging capability
• Experience with asynchronous processing, logging and error handling
• Previous experience delivering system-to-system integrations
• Ideally, hands-on experience with Microsoft Dynamics 365 CE and Dataverse

Bonus: Experience developing Dynamics plugins and custom workflows, and exposure to Power Platform and Azure integration services.Exposure to middleware platforms such as MuleSoft, Boomi, OIC or Informatica would also be advantageous.

If you are comfortable working independently, understanding existing integration logic and getting up to speed quickly in an established environment, this contract role might just be for you!

**Please note only applicants currently based in New Zealand with the appropriate work rights (a valid visa) will be considered**