Lead Software Engineer

Mastercard•O'fallon, MO

39d

About The Position

Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all. Are you passionate about improving the working lives of thousands of people by providing them with better tools and experiences? Do you thrive on automation, simplification, and solving complex problems that don’t have straightforward solutions? If you enjoy identifying and resolving system risks while connecting business needs with technical solutions, this role offers the opportunity to make a significant impact. As part of a forward-thinking team driving change on a large scale, you'll play a key role in enhancing our People & Capability Technology ecosystem and promoting a culture of technical excellence. You’ll bring a focus on process automation and leverage your expertise to create innovative solutions. By keeping business priorities in focus, you will collaborate with a dynamic team that thrives on teamwork and a shared commitment to success. The Lead Software Engineer, Workday Integrations, will lead the successful delivery of Workday integration and Extend solutions.

Requirements

5+ years of hands-on Workday integration experience, including Studio, Orchestrations, Core Connectors, EIB, RaaS, REST, and SOAP.
Strong understanding of Workday data model and business processes across Multiple Workday Modules (HCM, Compensation, Absence, Time Tracking, Benefits, Payroll, and Security).
4+ years of experience with complex reports, calculated fields, and business process design.
3+ years of experience with data transformation, validation, and integration error handling.
Proficient in XML, XSLT, JSON, XSD, and integration debugging techniques.
Strong experience with API authentication, encryption, certificates (x509/PGP), and SFTP/data exchange frameworks.
Hands-on experience with Workday Extend or familiarity with developing custom apps that enhance Workday functionality.
Experience leading technical design workshops, developing test strategies, and managing integration cutover activities.
Prior experience working in global environments with complex integration landscapes.
Experience collaborating with cross-functional HR, IT, and security teams.
Deep passion for Workday technology, automation, business problem-solving, and integration modernization.
Ability to analyze existing integration landscapes to identify technical debt related to performance, error handling, and scalability.
Detail-oriented and structured, maintaining documentation, version control, and audit readiness for all integration assets.
Strong analytical, problem-solving, and documentation skills; ability to communicate effectively with both technical and functional stakeholders.
Proven ability to manage complex technical projects, prioritize competing demands, and deliver high-quality results under deadlines.
Collaborative leader comfortable working independently or in an agile team environment, driving results through influence and innovation.
Abide by Mastercard’s security policies and practices
Ensure the confidentiality and integrity of the information being accessed
Report any suspected information security violation or breach
Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.

Nice To Haves

Workday Integration or Studio certification preferred; Extend certification is a plus.
Skilled in building relationships across HR and IT while influencing outcomes through technical credibility and expertise.
Curious and forward-looking — actively engages with Workday Community, monitors product releases, and proposes innovative integration solutions.

Responsibilities

Lead end-to-end integration design and delivery — including requirements gathering, technical design, development, configuration, validation, and deployment of Workday integrations using Studio, Orchestrations, Core Connectors, EIB, RaaS, and REST/SOAP APIs.
Manage data mapping, transformation, and validation processes across inbound and outbound integrations ensuring accuracy, consistency, and compliance.
Oversee integration lifecycle management, including environment strategy, code promotion, testing (unit, regression, end-to-end), and production hypercare.
Develop and maintain integration playbooks, reusable templates, and governance frameworks to standardize future efforts and reduce delivery time.
Serve as a trusted advisor on Workday integration best practices and design patterns, collaborating with HR, IT, and business stakeholders.
Prepare for and lead activities around Workday releases, including impact analysis, regression testing, and adoption of new integration or Extend features.
Design and deliver scalable, automated, and reusable integration solutions that enable high system reliability and operational efficiency across the Workday ecosystem.
Design and develop integrations leveraging Workday Studio, Orchestrations, EIB, Core Connectors, RaaS, and REST/SOAP web services to connect Workday with external platforms such as payroll providers, benefits administrators, and internal data services.
Own integration architecture, configuration, and error-handling frameworks, ensuring consistency across global and multi-entity environments.
Build, test, and deploy integration business processes, calculated fields, condition rules, and data transformations to support operational workflows.
Establish and maintain integration documentation standards, including technical design documents, data mappings, and configuration guides to enable scale and knowledge sharing.
Drive automation through Workday Extend applications and REST-based microservices to enhance usability and streamline processes.

Benefits

insurance (including medical, prescription drug, dental, vision, disability, life insurance)
flexible spending account and health savings account
paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave)
80 hours of Paid Sick and Safe Time, 25 days of vacation time and 5 personal days, pro-rated based on date of hire
10 annual paid U.S. observed holidays
401k with a best-in-class company match
deferred compensation for eligible roles
fitness reimbursement or on-site fitness facilities
eligibility for tuition reimbursement

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