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# Workday Developer / Integration Specialist - Contract (400 pd outside IR35)

- **Company:** SourceWise Solutions
- **Location:** London, UK
- **Salary:** £104,000.0
- **Contract:** Temporary contract
- **Skills:** Application Programming Interfaces (APIs), Application Integration Architecture, User Authentication, Software as a Service, Databases, Data Mapping, Design of User Interfaces, PostgreSQL, OAuth, Simple Object Access Protocol (SOAP), Systems Integration, TypeScript, WS-Security, ReactJS, Sap Business Objects, Build Management, Kubernetes, Enterprise Integration, Integration Frameworks, Data Management, Front End Software Development, EIB, Api Design, Restful APIs, Webhooks, Api Management, Workday, Service Stack
- **Published:** September 2, 2026
- **Apply:** https://uk.indeed.com/viewjob?jk=58d1e0f1b93db517

## About the Role

Workday Extend

 * Proven experience building Workday Extend applications
 * Custom Business Objects
 * Native Workday UI development using PMD / Canvas
 * Business Process Framework (BPF) triggers

Workday Orchestration

 * Strong hands-on experience designing and building Workday Orchestration
 * Outbound REST API integrations
 * Inbound / receive orchestrations
 * Asynchronous integration patterns

Workday APIs & External Integrations

 * Strong practical knowledge of Workday SOAP and REST APIs
 * OAuth 2.0
 * WS-Security
 * Integration System Users (ISUs)
 * EIB and RaaS
 * Experience integrating Workday with third-party REST APIs
 * Authentication and data mapping
 * Error handling and retry mechanisms
 * Webhooks and/or polling
 * API rate limits and resilient integration design

Workday Financial Management Experience

You should have a good understanding of:

 * Order-to-Cash (O2C)
 * Procure-to-Pay (P2P)
 * Customer invoicing
 * Supplier invoicing
 * Customer and supplier / party master data
 * How external platforms integrate into Workday financial workflows

Who We're Looking For

You will be a particularly strong fit if you:

 * Are a hands-on Workday engineer, rather than primarily a functional consultant
 * Have previously built real Workday Extend applications and Workday Orchestrations
 * Have integrated Workday with external SaaS or API-based platforms
 * Can independently investigate Workday capabilities and propose practical solutions
 * Understand both the technical integration layer and underlying financial business processes
 * Are comfortable working in an environment where not everything is fully defined upfront
 * Can take ownership from solution design * implementation * testing * documentation
 * Communicate effectively with both Workday specialists and software engineers
 * Are comfortable collaborating with modern product engineering teams
 * Can get productive quickly and focus on hands-on delivery

## Description

* Design and build integrations between Workday and external APIs/SaaS platforms
 * Develop Workday Extend applications
 * Build native Workday user experiences using PMD / Canvas pages
 * Work with Custom Business Objects
 * Use Business Process Framework (BPF) triggers against Workday objects such as customers, suppliers and invoices
 * Design and build Workday Orchestration flows
 * Make outbound REST API calls from Workday
 * Build inbound / receive orchestrations
 * Handle asynchronous API integrations using receive orchestrations, webhooks and/or polling
 * Map Workday Financial Management objects to external API data models
 * Implement secure authentication and communication between Workday and external platforms
 * Build robust error handling, retry and failure-management mechanisms
 * Handle integration edge cases including API failures, timeouts, duplicate requests and partial processing
 * Test integrations end-to-end
 * Document integration architecture, configuration and operational processes
 * Collaborate closely with software engineers to agree API contracts and integration patterns, * Frontend: React / TypeScript
 * Database: PostgreSQL
 * Cloud: Azure / GCP
 * Infrastructure: Kubernetes

You do not need to be an expert in the wider technology stack. The key requirement is deep Workday development and integration expertise, combined with the ability to collaborate effectively with engineers responsible for the external API/platform side of the integration.

About SourceWise

SourceWise connects specialist technology professionals with organisations building and scaling modern digital products and platforms.

For this engagement, you will work closely with our client's engineering team on a strategically important enterprise integration initiative.

Apply

If you have strong hands-on experience with Workday Extend, Workday Orchestration, Workday APIs and Financial Management integrations, we would be keen to hear from you.

Please apply with your latest CV, highlighting relevant experience across:

Workday Extend | Workday Orchestration | Workday Financial Management | SOAP/REST APIs | OAuth 2.0 | EIB | RaaS | O2C | P2P | Third-Party API Integrations

Pay: Up to £400.00 per day