MasterCard
O Fallon, Missouri
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, Site Reliability Engineer Overview The ONE SRE team is looking for a Lead Site Reliability Engineer, to strengthen operational resilience across the technology stack through observability, automation, and platform engineering. The ideal candidate is highly motivated, intellectually curious, analytical, and passionate about improving reliability through proactive problem-solving, collaboration, and continuous improvement. Role -Serve as the subject matter expert for load balancer platforms, with a primary focus on F5 technologies, and improve platform reliability, scalability, and operability across the enterprise -Drive proactive reliability engineering by identifying systemic risks, recurring failure patterns, and architectural opportunities to strengthen resilience and performance -Lead observability improvements through telemetry, dashboards, alerting, and monitoring practices using tools such as Splunk and Dynatrace -Develop and enhance automation, CI/CD integrations, and DevOps practices that reduce manual effort and improve operational efficiency -Partner with Architecture, Load Balancer Engineering, Operations, and global SRE teams to influence standards, roadmaps, troubleshooting approaches, and end-to-end system design -Act as a senior escalation point for complex incidents, lead root cause analysis, and mentor engineers through shared documentation, runbooks, and best practices All About You -Advanced expertise in Site Reliability Engineering, platform engineering, or infrastructure operations, with strong knowledge of F5 load balancer platforms in large-scale production environments -Strong experience implementing observability solutions across logs, metrics, and traces, and using telemetry to improve distributed system reliability and performance -Proficiency in Python, Go, Bash, or similar scripting languages to automate operational tasks, improve workflows, and enhance platform efficiency -Strong knowledge of Linux/Unix systems, networking, cloud and hybrid infrastructure, and highly available system design aligned to service level objectives -Hands-on experience with DevOps practices, including CI/CD pipelines, automation, and container-based deployments, along with strong troubleshooting and root cause analysis skills -Recognized as a technical expert who works independently on complex problems, influences outcomes across teams, and mentors others through shared engineering standards and best practices Corporate Security Responsibility Every person working for, or on behalf of, Mastercard is responsible for information security. All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and therefore, it is expected that the successful candidate for this position 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. Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly. 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. In line with Mastercard's total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: 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; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations. Pay Ranges O'Fallon, Missouri: $122,000 - $207,000 USD
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, Site Reliability Engineer Overview The ONE SRE team is looking for a Lead Site Reliability Engineer, to strengthen operational resilience across the technology stack through observability, automation, and platform engineering. The ideal candidate is highly motivated, intellectually curious, analytical, and passionate about improving reliability through proactive problem-solving, collaboration, and continuous improvement. Role -Serve as the subject matter expert for load balancer platforms, with a primary focus on F5 technologies, and improve platform reliability, scalability, and operability across the enterprise -Drive proactive reliability engineering by identifying systemic risks, recurring failure patterns, and architectural opportunities to strengthen resilience and performance -Lead observability improvements through telemetry, dashboards, alerting, and monitoring practices using tools such as Splunk and Dynatrace -Develop and enhance automation, CI/CD integrations, and DevOps practices that reduce manual effort and improve operational efficiency -Partner with Architecture, Load Balancer Engineering, Operations, and global SRE teams to influence standards, roadmaps, troubleshooting approaches, and end-to-end system design -Act as a senior escalation point for complex incidents, lead root cause analysis, and mentor engineers through shared documentation, runbooks, and best practices All About You -Advanced expertise in Site Reliability Engineering, platform engineering, or infrastructure operations, with strong knowledge of F5 load balancer platforms in large-scale production environments -Strong experience implementing observability solutions across logs, metrics, and traces, and using telemetry to improve distributed system reliability and performance -Proficiency in Python, Go, Bash, or similar scripting languages to automate operational tasks, improve workflows, and enhance platform efficiency -Strong knowledge of Linux/Unix systems, networking, cloud and hybrid infrastructure, and highly available system design aligned to service level objectives -Hands-on experience with DevOps practices, including CI/CD pipelines, automation, and container-based deployments, along with strong troubleshooting and root cause analysis skills -Recognized as a technical expert who works independently on complex problems, influences outcomes across teams, and mentors others through shared engineering standards and best practices Corporate Security Responsibility Every person working for, or on behalf of, Mastercard is responsible for information security. All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and therefore, it is expected that the successful candidate for this position 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. Mastercard is a merit-based, inclusive, equal opportunity employer that considers applicants without regard to gender, gender identity, sexual orientation, race, ethnicity, disabled or veteran status, or any other characteristic protected by law. We hire the most qualified candidate for the role. In the US or Canada, if you require accommodations or assistance to complete the online application process or during the recruitment process, please contact and identify the type of accommodation or assistance you are requesting. Do not include any medical or health information in this email. The Reasonable Accommodations team will respond to your email promptly. 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. In line with Mastercard's total compensation philosophy and assuming that the job will be performed in the US, the successful candidate will be offered a competitive base salary and may be eligible for an annual bonus or commissions depending on the role. The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience. Mastercard benefits for full time (and certain part time) employees generally include: 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; and many more. Mastercard benefits for interns generally include: 56 hours of Paid Sick and Safe Time; jury duty leave; and on-site fitness facilities in some locations. Pay Ranges O'Fallon, Missouri: $122,000 - $207,000 USD
ManTech
Springfield, VA
Secure our Nation, Ignite your Future ManTech is seeking a motivated, career and customer oriented Cyber Threat Analyst to join our team in Springfield, VA to provide unparalleled support to our customer and to begin an exciting and rewarding career within ManTech. Responsibilities include, but are not limited to:
Provides leadership and high level CSOC Security Support managing cyber and network incidents and warning activity.
Performs security event and incident correlation using information gathered from a variety of sources within the enterprise.
Performs cyber incident triage to include determining scope, urgency, and potential impact; identify the specific vulnerability and make recommendations which enable expeditious remediation.
Tracks cyber actions from initial detection through final resolution.
Analyzes and assesses damage to the data / infrastructure.
Performs cyber engineering trend analysis and reporting.
Position Requirements:
Minimum Education: B.S. or equivalent experience in related field
Minimum/General Experience: 8 years of related experience
Experience working within a Cybersecurity Operations Center environment desired
Experience with COTS technologies used in a Cybersecurity Engineering environment desired
CNDSP-A (GCIA, GCIH, or CEH) or CNDSP-IR (GCIH, CSIH, or CEH) certification required
IAT Level II (GSEC, Security+, SSCP, or CCNA-Security) certification required
Demonstrated technical experience:
Proficient in Windows and Linux operating systems.
Working knowledge of current COTS Cybersecurity technologies.
Working knowledge of database and operating system security.
Understanding of latest security principles, techniques, and protocols.
Ability to function in a fast-paced environment and effectively manage multiple tasks simultaneously; coordinating resources and ensuring scheduled goals are met.
Excellent verbal and written communication skills are required.
Ability to effectively interact with various levels of senior management is necessary.
Ability to make decisions and resolve problems effectively Seek out information and data to evaluate, prioritize and formulate best solution or practice.
Must be able to multi-task, work independently and as part of a team, share workloads, and deal with sudden shifts in project priorities.
Clearance Requirement:
Must possess an active TS/SCI w/ a Polygraph
#LI-MM1 ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law. If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services. If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access http://www.mantech.com/careers/Pages/careers.aspx as a result of your disability. To request an accommodation please click careers@mantech.com and provide your name and contact information.
Secure our Nation, Ignite your Future ManTech is seeking a motivated, career and customer oriented Cyber Threat Analyst to join our team in Springfield, VA to provide unparalleled support to our customer and to begin an exciting and rewarding career within ManTech. Responsibilities include, but are not limited to:
Provides leadership and high level CSOC Security Support managing cyber and network incidents and warning activity.
Performs security event and incident correlation using information gathered from a variety of sources within the enterprise.
Performs cyber incident triage to include determining scope, urgency, and potential impact; identify the specific vulnerability and make recommendations which enable expeditious remediation.
Tracks cyber actions from initial detection through final resolution.
Analyzes and assesses damage to the data / infrastructure.
Performs cyber engineering trend analysis and reporting.
Position Requirements:
Minimum Education: B.S. or equivalent experience in related field
Minimum/General Experience: 8 years of related experience
Experience working within a Cybersecurity Operations Center environment desired
Experience with COTS technologies used in a Cybersecurity Engineering environment desired
CNDSP-A (GCIA, GCIH, or CEH) or CNDSP-IR (GCIH, CSIH, or CEH) certification required
IAT Level II (GSEC, Security+, SSCP, or CCNA-Security) certification required
Demonstrated technical experience:
Proficient in Windows and Linux operating systems.
Working knowledge of current COTS Cybersecurity technologies.
Working knowledge of database and operating system security.
Understanding of latest security principles, techniques, and protocols.
Ability to function in a fast-paced environment and effectively manage multiple tasks simultaneously; coordinating resources and ensuring scheduled goals are met.
Excellent verbal and written communication skills are required.
Ability to effectively interact with various levels of senior management is necessary.
Ability to make decisions and resolve problems effectively Seek out information and data to evaluate, prioritize and formulate best solution or practice.
Must be able to multi-task, work independently and as part of a team, share workloads, and deal with sudden shifts in project priorities.
Clearance Requirement:
Must possess an active TS/SCI w/ a Polygraph
#LI-MM1 ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law. If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services. If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access http://www.mantech.com/careers/Pages/careers.aspx as a result of your disability. To request an accommodation please click careers@mantech.com and provide your name and contact information.
