Workday & Greenhouse Integration Developer (Contractor)

Job Title: Workday & Greenhouse Integration Developer (Contractor)
Location: Remote

Role Overview
We are seeking an experienced Contract Integration Developer to architect, build, and configure data pipelines between Greenhouse (Recruiting/HRIS Link) and Workday.
While we are implementing the native Hire Link for Workday to automate inbound hiring payloads, our organizational architecture requires a hybrid model to handle advanced workflows. You will design and implement the custom layers required to bridge Workday and Greenhouse for complex requisition approval chains, bi-directional custom field mapping, and user permission management.

Core Responsibilities
Hybrid Integration Architecture: Develop and maintain data flows pairing Greenhouse Hire Link (inbound hire payloads) with Greenhouse HRIS Link for upstream data management.
Custom Field & Options Mapping: Configure Workday RaaS (Report-as-a-Service) reports and transform JSON/XML data payloads to match Greenhouse immutable field keys for automated custom fields.
Dynamic Dropdown Syncing: Build and maintain automated web service scripts via Workday Web Services (WWS) to drive Greenhouse Custom Options Sync for volatile data sets (e.g., changing Cost Centers, Departments, and Office Locations).
Approvals & Requisition Sync: Translate Workday business process hierarchies into functional Greenhouse Job and Offer Approver roles using structured outbound RaaS data transfers.
User Lifecycle Automation: Configure and test HRIS Link User Sync to provision/deprovision profiles, and design an administrative workaround for translating Workday Security Groups into localized Greenhouse permission tiers.
Testing & Root-Cause Analysis: Conduct rigorous data-integrity testing across sandbox environments, isolating payload errors, API rate-limiting issues, and data discrepancies.

Key Requirements
Workday Technical Toolset: Proven hands-on contract experience with Workday Studio, Enterprise Interface Builders (EIBs), Core Connectors, and RaaS custom reporting.
Greenhouse API Expertise: Deep, technical familiarity with the Greenhouse Developer Center, HRIS Link schemas, Harvest API, and webhooks.
Data Transformation: Advanced proficiency in writing and troubleshooting XSLT transformations, XML, and JSON payloads.
Workflow Automation: Strong background aligning complex HR business processes (specifically corporate approval workflows and candidate-to-pre-hire conversion pipelines).