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Added 20 mins ago
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Security Alarm Engineer
Phoenix · Phoenix, AZ
- $40 to $50 USD / hour
…Genetec, and Software House platforms. You will serve as a go-to technical resource for project managers, field supervisors, and technicians. Travel is up to 50%, including overnight and…
Added 22 mins ago
DRAM Process Integration Engineer
Micron Technology, Inc.
Boise, ID
As a Process Integration Engineer, you will help define the future of memory technology by identifying novel solutions to scaling, performance, and power challenges in advanced…
Added 22 mins ago
IT Software Engineer IV
Idaho Division of Human Resources
Boise, ID
Serve as the technical lead for major software initiatives, guiding projects from concept through implementation and production support.
Added 23 mins ago
Senior Systems Engineer
Anduril Industries
Costa Mesa, CA
Anduril is seeking a Senior Systems Engineer to join our rapid growing team in Costa Mesa, CA. As a Senior Systems Engineer on the Maneuver Dominance team, you’ll be the technical authority…
Added 32 mins ago
SS
Space Launch Engineer, SSC/SYD 80
Space Systems Command
Kirtland AFB, NM
- $90,479 to $139,871 USD / year
…Force's premier rapid response launch team as a Space Launch Engineer & Program Manager, where your work directly supports the Nation's most critical defense missions. This is your chance…
Added 43 mins ago
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Senior Engineer, SSC/SW
Space Systems Command
Chantilly, VA
- $142,488 to $195,200 USD / year
In this high-impact senior engineering role, you will serve as a principal technical leader and consultant overseeing the development, production, and long-term sustainment of vital defense…
Added 46 mins ago
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ENGINEER/SCIENTIST
Naval Sea Systems Command
Crane, IN
- $125,776 to $192,331 USD / year
…experience must demonstrate the following: as a professional engineer or scientist, overseeing planning and execution of technical engineering or scientific projects involving design,…
Added 50 mins ago
FT
Associate Software Engineer - Full Stack Developer
Franklin Templeton
Baltimore, MD
- $100,400 to $118,200 USD / year
The Enterprise Data, Governance & Integration Platforms Engineering team builds and manages foundational data, API, integration, and application platforms that enable scalable, secure, and…
Added 57 mins ago
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General Engineer - NIPM
Federal Aviation Administration
Lenexa, KS
- $113,603 to $176,120 USD / year
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Added 59 mins ago
Field System Technician
Bechtel Corporation
Millersport, OH
Assist the EPC Automation Lead in coordinating with the Project Field Engineer, project IS&T Lead, and other automation leads (procurement and project controls, commissioning, etc.), as…
Added 1 hour ago
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General Engineer
Space Systems Command
Peterson AFB, CO
- $129,096 to $197,200 USD / year
…systems engineering leader to join our team to be the Chief Engineer of the SFPAE-INF Capability Trade Council. The ideal candidate will have a technical education, an in-depth knowledge of…
Added 1 hour ago
GPS Engineer
Applied Materials
Santa Clara, CA · Santa Clara
Lead complex technical escalations in partnership with cross-functional design and engineering teams to drive rapid issue resolution.
Added 1 hour ago
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Supervisory Engineer - Strategic Education Outreach Director
Naval Sea Systems Command
Naval Surface Warfare Center, MD
- $143,913 to $197,200 USD / year
…will ensure STEM Program connectivity across NSWCCD, assist in integration/assessment of existing STEM activities across technical departments/facilities and propose new events for the…
Added 1 hour ago
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MISSILE BRANCH SAFETY LEAD
STRATEGIC SYSTEMS PROGRAMS (SSP)
Washington Navy Yard, DC
- $143,913 to $197,200 USD / year
You will be responsible for system engineering, integration and test of the assigned program. | You will review and assess overall progress, and develop solutions for all technical,…
Added 1 hour ago
Snowflake Data Engineer
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NY
We are looking for an experienced, hands-on Data Engineer with strong expertise in Fivetran, dbt, Snowflake, and modern cloud data engineering practices. The candidate should also have…
Added 1 hour ago
Senior Data Center Controls Engineer
Google
Reston, VA · Atlanta, GA · Austin, TX · Kirkland, WA · New York, NY · San Francisco, CA · Sunnyvale, CA
With your technical expertise, you ensure compliance with codes and standards, develop infrastructure improvements and serve as an expert in your specialty (e.g., cooling, electrical).
Added 1 hour ago
Staff Software Engineer, Accelerators Systems Platforms Software Architect
Google
Sunnyvale, CA
Master’s degree or PhD in Engineering, Computer Science, or a related technical field.
Added 1 hour ago
Lead MV Electrical Engineer, PE - Power & Infrastructure
Monterra
Remote, United States
We're hiring our first MV Electrical Engineer, who will serve as the technical authority and in-house subject matter expert on medium-voltage power systems. You’ll work closely with our…
Added 1 hour ago
IVA Spacesuit Systems Engineer
Amentum
Houston, TX
We have an exciting opportunity for a IVA Spacesuit Systems Engineer to join the Nexus, a teammate company!
Added 1 hour ago
MD
General Engineer
Missile Defense Agency
Schriever AFB, CO · Redstone Arsenal, AL
- $130,987 to $197,200 USD / year
…The incumbent will be responsible for serving as a General Engineer for The Engineering Directorate supporting Command & Control, Battle Management & Communications…
Added 2 hours ago
AC
BIOLOGICAL SCIENTIST (ENVIRONMENTAL)
Air Combat Command
Luke AFB, AZ
- $93,629 to $121,720 USD / year
…Planner (0020); Biological Scientist (0401); Environmental Engineer (0819); and Physical Scientist…
Added 2 hours ago
UA
Aerospace Engineer
U.S. Army Aviation and Missile Command
Fort Eustis, VA
- $127,646 to $195,190 USD / year
About the Position: Serves as a Aerospace Engineer for the US Army Aviation and Missile Command, Aviation Integration Directorate, located in Fort Eustis, VA.
Added 2 hours ago
UA
INTERDISCIPLINARY
U.S. Army Corps of Engineers
New Orleans, LA · Rock Island, IL · Vicksburg, MS · Saint Paul, MN · Saint Louis, MO · Memphis, TN
- $106,437 to $150,852 USD / year
About the Position: Serves as Subject Matter Expert (SME) and Engineer, providing authoritative technical guidance, design oversight, and team leadership for complex engineering projects…
Added 2 hours ago
IS
Quality Analyst Engineer - Senior
Information Systems
United States
- $120,000 to $135,000 USD / year
· Acquiring and maintaining an in-depth understanding of the technical and functional architecture, security, and compliance requirements of assigned software systems and integrations.
Added 2 hours ago
Field System Technician
Bechtel
Millersport, OH
Assist the EPC Automation Lead in coordinating with the Project Field Engineer, project IS&T Lead, and other automation leads (procurement and project controls, commissioning, etc.), as…

US: Mastercard Technologies, LLC

Senior Software Engineer

O'Fallon, MO, United States

Pay Ranges O'Fallon, Missouri: $115,000 - $184,000 USD

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Job details

Pay: Pay Ranges O'Fallon, Missouri: $115,000 - $184,000 USD
Posting language: English
Posted: Nov 4, 2026

Original job description

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

Senior Software Engineer

About the Role

The Mastercard Operational Intelligence Program is engaged in developing innovative solutions through technology that keeps Mastercard positioned as a leader in delivering value-added business analytics and reporting solutions to our diverse customer base. We work collaboratively with our product partners and other technical teams to continuously improve and enhance our existing products and drive new products to the global marketplace.

We are currently seeking a Senior Software Engineer to join the Mastercard Operational Reports NexGen development team to work on Enterprise Applications to deliver technical solutions using JAVA technology stacks and Angular/ React front-end technologies. The successful candidate will contribute to software architecture, performance engineering, secure software development, operational excellence, and continuous improvement initiatives while delivering highly available, resilient, and secure enterprise applications.

Role

Participate in the gathering and analysis of business requirements and translate them into scalable, maintainable, and secure software solutions.
Support the technical lead in defining application architecture, software design patterns, component interactions, and technology standards.
Ensure software designs align with Mastercard Enterprise Architecture and leverage enterprise services and reusable platforms.
Ensure product development meets Mastercard's business, scalability, performance, security, and reliability requirements.
Ensure development teams utilize appropriate Mastercard development methodologies, engineering standards, and documentation practices.
Conduct and participate in code reviews to improve code quality, maintainability, security, consistency, and adherence to software engineering best practices.
Provide functional guidance, knowledge sharing, and technical recommendations to team members when appropriate.
Design, develop, maintain, and support high-quality software solutions using modern software engineering principles and practices.
Design, develop, and maintain unit, functional, integration, and automated tests to validate application functionality, system interactions, reliability, and performance.
Support continuous integration and continuous testing practices to improve software quality and release confidence.
Ensure that software and system design support the goal of zero downtime, high availability, resiliency, and operational excellence in production environments.
Respond to operational and business concerns or issues relative to business programs, projects, and platform enhancements to ensure consistent delivery of quality services.
Investigate and resolve complex production, application, integration, and infrastructure issues through structured troubleshooting, root cause analysis, and corrective action planning.
Ensure development supports all required certifications and compliance requirements, including PCI, GLBA, Safe Harbor, and other applicable standards.
Apply secure coding practices, security-by-design principles, and vulnerability prevention techniques throughout the software development lifecycle.
Identify, assess, and remediate application security vulnerabilities while ensuring alignment with Mastercard security standards and industry best practices.
Responsible for performance engineering of enterprise software architecture through monitoring, analysis, optimization, and scalability improvements across applications, APIs, databases, and cloud services.
Apply advanced data structures, algorithms, and software engineering principles to solve complex technical challenges and optimize system performance and resource utilization.
Responsible for designing, developing, testing, delivering, monitoring, and maintaining scalable, resilient, and secure cloud architectures using AWS services and cloud-native technologies such as EC2, ECS, and S3.
Design solutions with operational readiness in mind, incorporating observability, logging, monitoring, alerting, supportability, reliability, and maintainability best practices.
Improve and expand the existing platform by ensuring that it remains resilient, secure, scalable, highly available, and operationally efficient.
Work closely with business partners on product definition, product roadmaps, business case development, and overall technology direction for the team.

All About You

Strong analytical, troubleshooting, and problem-solving abilities, with the ability to quickly adapt to new technologies, methodologies, and systems.
High-energy, detail-oriented, proactive, and capable of functioning under pressure in an independent environment with a high degree of initiative and self-motivation.
Strong interpersonal and relationship-building skills with a proven track record of successful collaboration across teams.
Excellent communication skills required to interact across multiple organizational levels and partner effectively with internal and external stakeholders.
Strong understanding of data structures, algorithms, object-oriented design principles, and scalable application development techniques.
Experience designing scalable, secure, maintainable, and high-performing enterprise software solutions.
Experience conducting code reviews and applying engineering best practices that improve software quality, maintainability, and security.
Experience developing unit, functional, integration, and automated testing solutions within enterprise applications.
Experience identifying application bottlenecks and implementing performance optimization strategies across applications, databases, and cloud environments.
Experience applying secure coding practices, application security principles, vulnerability remediation techniques, and OWASP-based security standards.
Proficient working with J2EE, Java 8 or higher, JSP, Servlets, Spring 5, Hibernate, and relational non-relational database technologies including Oracle, SQL Server, MySQL, PostgreSQL, NoSQL, MongoDB, or similar technologies
Strong troubleshooting and root cause analysis skills with experience supporting critical business applications in production environments.
Experience in the following is a highly preferred:
Web Services (SOAP, RESTful APIs)
Servers (WebSphere, JBoss, Tomcat)
HTML, JavaScript, jQuery
UNIX (Shell, AWK scripting)
XML/XSLT
CSS
C#
React or Angular
IDEs (Microsoft Visual Studio, RAD, Eclipse)
Experience with development tools including Maven, Gradle, Jenkins, Chef, SonarQube, and related DevOps toolsets.
Experience working within Agile and Waterfall delivery methodologies.
Prior experience in cloud-native application development and AWS cloud services.
Strong understanding of observability, monitoring, operational readiness, and reliability engineering concepts.
Excellent knowledge of data engineering concepts and preferred experience working with DCP, Databricks, AWS, and large-scale enterprise data platforms.
Bachelor's degree in information systems, Information Technology, Computer Science, Engineering, or equivalent is preferred

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 reasonable_accommodation@mastercard.com 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.

THIS POSTING RELECTS ONE OR MORE CURRENT VACANCIES ON OUR TEAM, AND MASTERCARD INTENDS TO FILL THIS POSITION BY 02/02/2027. If the fill date has passed, Mastercard intends to fill this position as soon as possible.

Pay Ranges O'Fallon, Missouri: $115,000 - $184,000 USD

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