**Our Purpose**
- Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential._
**Title and Summary**
Principal Software Engineer, SE Guild
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.
OVERVIEW
The Software Engineering (SE) Guild is a general community of 8,000+ software engineers across Mastercard. The SE Guild exists to develop and share knowledge, standards, practices, and tooling, and to help elevate and maintain the craft of software engineering across the company.
The SE Guild’s work is organized around four pillars:
- Help software engineers be better engineers
- Help software engineering leaders be better leaders
- Solve shared, hard problems through Special Interest Groups (SIGs)
- Build senior-level technical leadership through Principal Communities
ROLE




As a Principal Software Engineer supporting the SE Guild, you will be responsible for building and maintaining the technical solutions that enable SE Guild programs to scale reliably and deliver value across the engineering community.
While you will partner closely with SE Guild leadership, TPMs, and SIG leaders, success in this role is measured by the quality, reliability, and usability of the solutions and content you build.
Over time, this role is expected to take on increasing technical ownership of SE Guild initiatives, based on experience, trust, and demonstrated impact.
WHAT YOU’LL DO
- Developer Experience & Community Insights
- Partner with engineers, SIG leaders, and technical communities to identify opportunities for alignment, education, collaboration, and knowledge sharing across the engineering community.
- Help surface common challenges, emerging needs, and opportunities for the SE Guild to better support software engineers and engineering leaders.
- Contribute to the Principals Community through active participation, technical leadership, knowledge sharing, and collaboration with senior engineers across the company.
- Workflow Automation
- Leverage emerging technologies, including automation, AI-enabled tooling, and agents, where appropriate to improve scalability, reduce manual effort, and enhance SE Guild productivity (e.g., roster management, document publishing, reporting).
- Design, implement,



and maintain reliable datasets, integrations, and data pipelines that support SE Guild programs and operational needs.
- Continuously identify opportunities to simplify and improve Guild workflows through technical solutions.
- Technical Learning Assets & Engineering Curriculum
- Develop, test, and maintain technical learning assets that support SE Guild programs, including documentation, workshops, labs, exercises, and reference materials.
- Ensure content is technically accurate, aligned with Mastercard engineering standards, and practical for real-world use.
- Partner with TPMs, SIG leaders, senior engineers, and Learning & Development to validate content and incorporate feedback.
- Coding Assessments & Interview Content
- Develop, configure, and maintain coding test content used in SE Guild-supported hiring.
- Build templates (question selection, language options, interviewer notes) to improve consistency and reduce setup friction.
- Establish and maintain quality mechanisms, including review cadence, testing, calibration, reporting, and refresh strategies.
ALL ABOUT YOU
- Bachelor’s degree in computer science, Engineering, Information Technology, or equivalent practical experience.
- Demonstrated progression from Software Engineer to senior technical leadership roles, with a strong foundation in hands-on software development.
- Hands-on experience designing, building, and evolving large-scale, distributed, cloud-native systems using modern programming languages (e.g., Java,.NET/C#, Python).
- Strong expertise in microservices, APIs, and event-driven architectures, with a focus on scalability, resiliency, and security.
- Proven experience designing and operating solutions on major

📌 Principal Software Engineer, Se Guild (Ciudad de México)
🏢 Mastercard
📍 Ciudad de México