Senior Workday developer

• Lead the end-to-end design, development, and delivery of enterprise Workday integrations, reporting solutions, and business processes across Workday HCM and Financials environments.
• Partner with HR Technology, Finance IS, Workday IT, and CME technology teams to guide integration architecture, resolve complex platform issues, and streamline business processes.
• Champion application security, least-privileged access, and SDLC best practices to safeguard CME Group’s sensitive data while driving continuous platform enhancement., + Design, build, test, and deploy robust inbound and outbound integrations connecting Workday with third-party systems using Workday Studio, Core/Cloud Connectors, and Enterprise Interface Builders (EIBs).
• Implement and maintain Workday Public Web Services, REST/SOAP APIs, Custom Objects, and Custom APIs.
• Author and optimize complex XSLT scripts for data mapping, transformation, and payload validation.
• Reporting & Document Design
• Develop Simple, Advanced, Composite, and Matrix reports tailored to cross-functional stakeholder and audit requirements.
• Design, test, and deploy complex, high-impact business documents and layout reports utilizing Business Intelligence and Reporting Tools (BIRT).
• Project Delivery & Cloud Integration
• Collaborate with HR Technology and Finance IS to lead integration projects, new module rollouts, semi-annual upgrades, enhancement packages, and process redesigns.
• Integrate Workday processes with Google Cloud Platform (Google Cloud Platform) services, utilizing Google Kubernetes Engine (GKE), Cloud Storage, and BigQuery.
• Testing & Platform Reliability
• Incorporate Kainos automated testing to execute regression testing, validate upgrades, and support continuous delivery pipelines.
• Prioritize the support and enhancements queue, delivering efficient incident resolution and root-cause analysis.
• Mentor junior developers and establish reusable integration templates, coding standards, and governance best practices.
• Security & Governance
• Enforce Workday application security and data privacy across all stages of the SDLC, treating data protection as an absolute priority.
• Configure and audit Integration System Users (ISU), Integration System Security Groups (ISSG), and integration security policies following a least-privileged access model.

• Professional Experience
• 5+ years of technical and functional development experience in Workday HCM and Financials or a comparable enterprise ERP environment.
• Technical Proficiencies
• Hands-on proficiency in Workday integration tools: Workday Studio, EIBs, Connectors, and Document Transformation.
• Strong technical fluency in XSLT, XML, Web Services (SOAP, REST), Workday Public APIs, Custom Objects, and Custom APIs.
• Experience with Workday Extend.
• Demonstrated track record developing complex Workday reports and BIRT templates.
• Working knowledge of Google Cloud Platform (Google Cloud Platform) development, specifically GKE, Cloud Storage, and BigQuery.
• Experience with Kainos automated testing for Workday environments.
• Functional & Domain Knowledge
• Solid functional understanding of data flows across at least 3 to 4 Workday Financials modules (e.g., General Ledger, Accounts Payable, Accounts Receivable, Billing, Procurement, Projects, Asset Management).
• Working knowledge of data structures across at least 2 to 3 Workday HCM modules (e.g., Core HR, Compensation, Benefits, Time Tracking, Absence Management, Payroll Interface, Recruiting, Talent and Performance).
• Security & Operational Standards
• In-depth expertise in Workday security administration, integration security policies, and least-privileged access implementation.
• Proven ability to manage enhancement queues, document best practices, and deliver scalable enterprise solutions in a highly regulated environment.

CME Group is committed to offering a competitive total rewards package for our employees that recognizes their contributions to the business and reflects our long-term investment in their future. The pay range for this role is $114,200-$190,300. Actual salary offered will be dependent on a wide array of factors including but not limited to: relevant experience, skills, education and comparison to internal employees (where relevant). Our compensation program also includes an annual target bonus opportunity for all employees, as well as the opportunity to become an owner in the company through our broad-based equity program. Through our benefits program, we strive to offer flexibility, value and choice. From comprehensive health coverage, to a retirement package that includes both a 401(k) and an active pension plan, to highly competitive education reimbursement provisions, paid time off and a mental health benefit, CME Group offers a holistic benefits package for our team and their dependents.

CME Group is the world’s leading derivatives marketplace. But who we are goes deeper than that. Here, you can impact markets worldwide. Transform industries. And build a career by shaping tomorrow. We invest in your success and you own it - all while working alongside a team of leading experts who inspire you in ways big and small. Problem solvers, difference makers, trailblazers. Those are our people. And we’re looking for more.

At CME Group, we embrace our employees’ unique experiences and skills to ensure that everyone’s perspectives are acknowledged and valued. As an equal-opportunity employer, we consider all potential employees without regard to any protected characteristic.

Important Notice: Recruitment fraud is on the rise, with scammers using misleading promises of job offers and interviews to solicit money and personal information from job seekers. CME Group adheres to established procedures designed to maintain trust, confidence and security throughout our recruitment process. Learn more here .