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 Lead, SRE Engineer Lead SRE Engineer, Site Reliability Engineering Our Purpose: Mastercard powers economies and empowers people across more than 200 countries and territories worldwide. We are committed to building an inclusive, digital economy that benefits everyone, everywhere-by making transactions safe, simple, smart, and accessible. Through secure data, trusted networks, strong partnerships, and relentless innovation, we help individuals, financial institutions, governments, and businesses unlock their greatest potential. About the Role: Mastercard's Program aligned Site Reliability Engineering (SRE) teams are dedicated to delivering a seamless experience for our customers. We achieve this by maintaining every aspect of our Programs infrastructure and technology ecosystem to the highest standards, ensuring compliance with rigorous security requirements. Within Mastercard, SRE focuses on the reliability and performance of core infrastructure, networks, and foundational services that power our applications. Our mission is to ensure these components operate with excellence, enabling applications to deliver an outstanding customer experience. In this role, you will join our Payments Network SRE team and take ownership of continuously assessing and elevating the end to end service quality of our platform. You will leverage data to drive root cause analysis and deliver strategic insights to key stakeholders on resource utilization, capacity forecasting, and performance trends-ensuring the availability, scalability, and resilience of our network. Key Responsibilities: Lead continuous assessments of the application infrastructure supporting critical Mastercard applications, focusing on health, performance, monitoring and alerting, and capacity analysis. Collaborate with Product and Development teams to forecast growth requirements and ensure scalability and resiliency. Champion observability as a core principle for infrastructure services by assessing environments and technologies to uncover gaps in monitoring and alerting. Design and implement strategies to close these gaps, ensuring all infrastructure telemetry is integrated into a unified, single-pane-of-glass view. Build custom dashboards to investigate and perform root cause analysis on complex issues. Lead regular incident reviews with internal support teams to ensure root causes are identified. When patterns of failure or compatibility issues between software and infrastructure emerge, develop and implement strategies to remediate or mitigate risks. Leverage automation and AI technologies to enhance proactive issue detection, enable self-healing capabilities, reducing Mean Time to Detect (MTTD) and Mean Time to Mitigate (MTTM). Develop testing and validation plans for new environment builds, disaster recovery exercises and post-maintenance activities to certify environment readiness before customer traffic is routed to it. Champion continuous learning, development, and knowledge sharing across networking and other infrastructure disciplines to strengthen multi-disciplinary SRE team capabilities. Lead training initiatives for team members and Product and Development on networking aspects of the platforms. Evaluate vendor hardware, firmware, and software upgrade roadmaps, and conduct proof-of-concept (POC) testing to identify potential risks and opportunities for improvement in upcoming releases. All about you: • 5-10 years of experience in an SRE or SRE related operations role, including 3+ years supporting e commerce, financial services, or large scale SaaS platforms. • Excellent infrastructure troubleshooting and analytical problem solving skills. • Strong hands on experience with observability and monitoring tools such as Splunk, Dynatrace, or equivalent, with a proven ability to triage and investigate complex issues. • Familiarity with network telemetry tools such as SolarWinds and NetScout. • Proficiency in packet level debugging, including capturing traffic with tools like tcpdump and analyzing packets using Wireshark. • Broad understanding of end to end infrastructure supporting payment platforms-spanning platform services, networking, databases, and storage. • Experience with automation and Infrastructure as Code tools such as Chef, Ansible, and Terraform, as well as structured data formats (JSON/YAML). • Excellent communication skills with the ability to coordinate cross functional troubleshooting efforts and lead RCA processes to closure. • Demonstrated ability to troubleshoot complex production issues, perform root cause analysis, and drive long term corrective actions. • Experience partnering with development teams to shape architecture, define SLIs/SLOs, and embed reliability into services from design through operation. • Strong understanding of monitoring and observability ecosystems, including Prometheus, Grafana, ELK/EFK, Splunk, and OpenTelemetry. • Effective incident management skills with a structured, analytical approach to problem solving. The Payments Network SRE team is responsible for the runtime availability of some of Mastercard's most critical core payment systems, which support national infrastructure and operate 24/7 year-round. As a result, this role will include periodic on-call responsibilities when required. Corporate Security Responsibility All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must: • 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, and• Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines. Corporate Security Responsibility All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must: - 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, and - Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.

Role Description ASRC Federal is seeking a Principal DevSecOps Infrastructure Engineer to support DSOP enterprise platform sustainment, modernization, and cloud operations across Army environments. This role provides engineering expertise across Linux/Windows systems, cloud-native infrastructure, Kubernetes orchestration, and observability stacks. - Perform day-to-day operations of cloud and on-premise infrastructure supporting DSOP - Manage compute, storage, networking, and automation tools - Configure, deploy, and maintain platform components in containerized environments - Implement monitoring, alerting, and logging solutions for operational visibility - Troubleshoot complex system issues across distributed environments - Maintain Infrastructure-as-Code (IaC) pipelines for consistent deployments - Support system security compliance, patching, and RMF requirements - Coordinate with DevSecOps, cybersecurity, and platform engineering teams Qualifications - A Bachelor’s Degree in Computer Science, Electronics Engineering or other Engineering or Technical discipline is required. An advanced degree is desirable. - 9+ years of DevSecOps Infrastructure Engineer experience - Expertise with Kubernetes, Docker, cloud services (AWS, Azure), and Linux administration - Experience with Terraform, Ansible, GitLab CI/CD, or similar IaC tools - Familiarity with DoD cyber compliance frameworks - Strong troubleshooting and automation skills Benefits - Competitive pay and benefits packages - Health care, dental, vision, life insurance - 401(k) - Education assistance - Paid time off including PTO, holidays, and any other paid leave required by law EEO Statement ASRC Federal and its Subsidiaries are Equal Opportunity employers. All qualified applicants will receive consideration for employment without regard to race, gender, color, age, sexual orientation, gender identification, national origin, religion, marital status, ancestry, citizenship, disability, protected veteran status, or any other factor prohibited by applicable law.

• Design, build, troubleshoot, and maintain automation and integration capabilities for mission-focused cloud and software delivery environments • Develop automation that improves consistency, reliability, and delivery speed • Support secure software delivery, operational sustainment, and compliance-driven engineering activities • Help convert engineering needs into practical scripts, tools, pipelines, documentation, and repeatable processes • Create and maintain documentation, standard operating procedures, troubleshooting guides, and evidence artifacts • Support secure configuration management, vulnerability remediation, scan integration, and compliance support activities • Troubleshoot complex issues across application, operating system, infrastructure, cloud, network, identity, and CI/CD boundaries • Coach and provide guidance to less experienced professionals; may serve as a task lead

Role Description We are seeking a scrappy, high-ownership Staff Site Reliability Engineer (SRE) to join our lean, fast-moving SRE team. This is a security-focused engineering role rather than a policy or audit one. You'll write code, build automation, integrate scanners into CI/CD, ship Terraform modules the rest of the team can adopt, and drive Dependabot triage with engineering teams. Together, you'll define what "secure by default" actually looks like in our GCP environment and GitHub organization, then make it operational. What You'll Build - Cloud Security Posture Management - Assess and harden Stord's GCP footprint (GKE, IAM, Cloud Armor), and codify the baseline in Terraform and policy-as-code where it makes sense. - Build continuous posture monitoring against that baseline, with a published gap list and remediation schedule. - Drive the evaluation, integration, and rollout of new security tooling as the program matures. - Vulnerability and Dependency Management - Establish and automate the vulnerability and dependency remediation workflow across engineering teams. - Own Dependabot configuration and triage workflows across our GitHub organization. - Build supply-chain controls into CI/CD. - Wire container image scanning and DAST/network scanning programs into the same workflow. - Security Solutions Engineering - Build security capabilities that the broader SRE team can run as part of their normal operating model. - Ship documentation, runbooks, and self-service tooling that make your designs portable to the rest of the team. - Set the engineering bar for security work inside SRE. - Partner cross-functionally with engineering teams on app security questions. Qualifications - Deep GCP and GKE security experience. - Dependabot and secret scanning at scale. - CI/CD supply chain hardening. - Cloud security posture management in practice. - Infrastructure-as-code and automation fluency. - Systems-level technical fluency. - Track record of designing for operability. Required Soft Skills - Ownership & Accountability. - Strong Communication. - Collaborative Approach. - Production Mindset. - Learning Agility. - Directed AI-Assisted Development. Strongly Preferred - Container and image scanning. - DAST and network scanning programs. - Cloudflare edge security. - Detection engineering on GCP. Nice to Have - Prior experience standing up a security program inside an SRE or platform team. - Familiarity with the current supply-chain threat landscape and recent CISA guidance. - Contributions to open-source security tooling or published security research. What Success Looks Like - 30 days: You've ramped on Stord's GCP footprint, GitHub configuration, and existing security tooling. - 90 days: The vulnerability and dependency remediation workflow is live with at least one engineering team as a pilot. - 6–12 months: The remediation workflow is rolled out across engineering.