Senior Workday HCM Developer | San Jose, California, USA

Cognitive Minds; San Jose (CA); On-site; USD 124,000 - 207,000; Full time

Job summary

Cognitive Minds is seeking a highly experienced Senior Workday HCM Developer to lead design, development, deployment, and support of complex Workday integrations in a large enterprise. This role requires a hands-on Workday specialist capable of independently owning integration architecture, development, troubleshooting, deployment, and production support activities.

The role involves collaborating with HR, HRIS, Payroll, Benefits, Recruiting, and Engineering to build scalable, secure

Qualifications

• Extensive hands-on Workday HCM and Core HCM experience.
• Strong experience with Workday Studio, EIB, Core Connectors.
• Experience building integrations using REST and SOAP APIs and Workday Web Services.
• Excellent XML, XSLT, and JSON development skills.
• Advanced Workday Reporting, RaaS, and Calculated Fields.
• Knowledge of Workday Security and Integration Security.
• Ability to independently manage Workday integration development projects.
• Experience with Data Conversion and Data Load activities.

Responsibilities

• Design, develop, test, deploy, and support Workday HCM integrations.
• Create enterprise integrations using Workday Studio.
• Develop and maintain EIB integrations and Core Connectors.
• Integrate Workday with enterprise applications via REST and SOAP APIs.
• Use Workday Web Services for inbound/outbound integrations.
• Develop Advanced Reports, RaaS, and Calculated Fields.
• Design XML, XSLT, JSON transformations/mapping.
• Support data conversions, migrations, and bulk loads.
• Implement and manage Workday security/integration security frameworks.
• Troubleshoot integration failures and production issues.
• Support release management, testing, deployment, and post-production validation.
• Collaborate with HR, Payroll, Benefits, Recruiting, and business teams.
• Lead integration architecture design and adherence to best practices.
• Create technical docs and maintain integration standards.

Skills

Workday HCM

Workday Studio

EIB

Core Connectors

REST APIs

SOAP APIs

Web Services

XML

XSLT

JSON

RaaS

Calculated Fields

Security

Data Migration

Data Load

Troubleshooting

Integration Architecture

Production Support

Tools

Workday Extend

Workday Orchestrate

Job description

Job Title: Senior Workday HCM Developer | San Jose, California, USA

Hiring Company: Cognitive Minds

Job Location: San Jose, California, USA

Job Type: Contract

Industry: HR Technology | Enterprise Applications | Workday HCM

Position Summary

Cognitive Minds is seeking a highly experienced Senior Workday HCM Developer to lead the design, development, deployment, and support of complex Workday integrations in a large enterprise environment. This role requires a hands‑on Workday specialist capable of independently owning integration architecture, development, troubleshooting, deployment, and production support activities.

Detailed Job Description

As a Senior Workday HCM Developer, you will play a critical role in delivering and maintaining enterprise-grade Workday HCM solutions and integrations. You will collaborate with HR, HRIS, Payroll, Benefits, Recruiting, and Engineering teams to build scalable, secure, and reliable integrations while ensuring system performance and operational excellence.

The role requires extensive experience with Workday Studio, EIB, Core Connectors, Reporting, Security, Workday Web Services, and enterprise integration frameworks. Successful candidates will be responsible for the full lifecycle of Workday integration projects from requirements gathering through deployment and production support.

Key Responsibilities

• Design, develop, test, deploy, and support Workday HCM integrations.
• Create enterprise integrations using Workday Studio.
• Develop and maintain EIB integrations and Core Connectors.
• Integrate Workday with enterprise applications using REST APIs and SOAP APIs.
• Utilize Workday Web Services for inbound and outbound integrations.
• Develop Advanced Reports, RaaS reports, and Calculated Fields.
• Design XML, XSLT, JSON transformations and mapping solutions.
• Support data conversions, data migration, and bulk data load activities.
• Implement and manage Workday security and integration security frameworks.
• Troubleshoot integration failures and production issues.
• Support release management, testing, deployment, and post-production validation activities.
• Collaborate with HR, Payroll, Benefits, Recruiting, and business teams to deliver solutions.
• Lead integration architecture design and ensure adherence to Workday best practices.
• Create technical documentation and maintain integration standards.

Required Qualifications & Skills

• Strong experience with Workday HCM / Core HCM.
• Extensive hands‑on experience with Workday Studio.
• Experience building integrations using Enterprise Interface Builder (EIB).
• Strong knowledge of Core Connectors.
• Experience with REST and SOAP APIs.
• Expertise in Workday Web Services.
• Strong XML, XSLT, and JSON development experience.
• Advanced Workday Reporting expertise.
• Experience building and maintaining RaaS (Reports-as-a-Service).
• Strong knowledge of Calculated Fields.
• Experience managing Workday Security and Integration Security.
• Good understanding of the Workday Data Model.
• Experience supporting Data Conversion and Data Load activities.
• Strong troubleshooting and production support experience.
• Ability to independently manage Workday integration development projects.

Preferred Qualifications

• Experience with Workday Extend.
• Experience with Workday Orchestrate.
• Payroll integration experience.
• Benefits integration experience.
• Recruiting integration experience.
• Identity and Access Management integration experience.
• Workday Certifications in:
  • Workday Integrations
  • Workday HCM
  • Workday Reporting
  • Workday Security

Ideal Candidate Profile

The ideal candidate is a senior hands‑on Workday expert with proven experience in:

• Workday Integration Architecture
• End-to-End Integration Development
• Enterprise HCM Implementations
• Production Support & Troubleshooting
• Security & Compliance
• Data Migration & Conversion
• HR Systems Integration

The successful candidate should be capable of independently leading complex Workday integration initiatives while providing technical leadership and best-practice guidance.

Recruitment Pro Tip

For senior Workday developer roles, recruiters focus heavily on practical implementation experience. Highlight the number of integrations delivered, Workday modules supported, Workday Studio projects completed, production issues resolved, migration projects executed, and API integrations developed. Quantifiable achievements such as reduced processing times, automated HR processes, successful Workday deployments, or large-scale data conversions will significantly improve your chances of being shortlisted.