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Added 6 mins ago
Principal / Senior Principal Reliability Engineer
CORP-Corporate Office
United States
Northrop Grumman is seeking a Principal Reliability Engineer or Senior Principal Reliability Engineer to work with our Specialty Engineering Team out of Woodland Hills, CA. Our success is…
Added 6 mins ago
Principal / Senior Principal Systems Safety Engineer
CORP-Corporate Office
United States
Northrop Grumman is seeking a Principal Systems Safety Engineer or Senior Principal Systems Safety Engineer to work with our Specialty Engineering Team out of Woodland Hills, CA. Our…
Added 20 mins ago
Senior Specialist, Electrical Engineer- Motor Control and Servo Design
L3Harris Technologies
Salt Lake City, UT
…integration, verification, qualification, and production support. The engineer will collaborate with cross-functional teams to ensure designs meet system-level power, thermal, EMI/EMC,…
Added 21 mins ago
Lead Agentic AI Offensive Security Engineer
Hewlett Packard Enterprise
Spring, TX · San Jose, CA · Durham, NC · Andover, MA · Fort Collins, CO · Frisco, TX
HPE’s Cybersecurity team is seeking a Lead Agentic AI Engineer to design, enhance and support the technical direction of our AI-Enabled Offensive security organization. Using your expertise…
Added 40 mins ago
Senior Project Engineer, NA
Vantage Data Centers Management Company LLC
Port Washington, WI
Vantage is looking for an ambitious and self-starting Senior Project Engineer to drive core project coordination efforts across a wide spectrum of ongoing construction projects for the San…
Added 40 mins ago
Senior Construction Manager, NA
Vantage Data Centers Management Company LLC
Reno, NV
…center design in innovative ways to deliver dramatic gains in reliability, efficiency and sustainability in flexible environments that can scale as quickly as the market…
Added 41 mins ago
Senior Core Infrastructure Engineer
Oracle
Santa Clara, CA · Seattle, WA
…tolerance, and high availability. We are looking for a hands-on engineer with strong systems programming skills, end-to-end ownership, and an AI-first mindset to drive engineering…
Added 52 mins ago
NG
2027 Spring Co-op Software Engineer Intern – McClellan CA
Northrop Grumman
McClellan Park
- $21.5 to $48 USD / hour
Collaborate with senior software engineers in the NIC division to design, develop, and integrate software components for navigation and mission‑planning systems.
Added 52 mins ago
Principal / Senior Principal Reliability Engineer
Northrop Grumman
Los Angeles
Northrop Grumman is seeking a Principal Reliability Engineer or Senior Principal Reliability Engineer to work with our Specialty Engineering Team out of Woodland Hills, CA. Our success is…
Added 52 mins ago
Principal / Senior Principal Systems Safety Engineer
Northrop Grumman
Los Angeles
Northrop Grumman is seeking a Principal Systems Safety Engineer or Senior Principal Systems Safety Engineer to work with our Specialty Engineering Team out of Woodland Hills, CA. Our…
Added 53 mins ago
Optical Subsystem I&T Engineer - Level 1
Northrop Grumman
Chandler
…the integration and testing of EO hardware, working alongside senior engineers and multidisciplinary teams to ensure subassembly and system level performance. The selected candidate should…
Added 55 mins ago
Senior Software Engineer, AI & Infrastructure Planning
Cloudflare
Austin, TX
The Snr Software Engineer, AI & Infrastructure Planning role helps Cloudflare build, deploy, and operate one of the world's largest distributed networks. You will build an auditable…
Added 1 hour ago
Senior Process Engineer, Advanced Operations
Stryker Corporation
Portage, MI · Kalamazoo, MI
…active and more satisfying lives. We are currently seeking a Senior Engineer, Process Development to join our OrthoTech Division. This is an onsite position in Portage,…
Added 1 hour ago
Sr. System Robotics Test Engineer
Stryker Employment Company, LLC
Fort Lauderdale, FL
As a Senior Systems Test Engineer, you will help bring new and modified products to market by supporting system-level integration, verification, and validation activities for complex…
Added 1 hour ago
Senior Core Infrastructure Engineer
Oracle
Santa Clara, CA · Seattle, WA
…tolerance, and high availability. We are looking for a hands-on engineer with strong systems programming skills, end-to-end ownership, and an AI-first mindset to drive engineering…
Added 1 hour ago
Senior Security Engineer
Apple
Seattle, WA
Experience multi-tenant system design and secreting multi-tenant software as a service and platform as a service offerings.
Added 1 hour ago
Senior Data Engineer (Remote)
CareFirst
Baltimore, MD
The Senior Data Engineer is responsible for orchestrating, deploying, maintaining and scaling cloud OR on-premise infrastructure targeting big data and platform data management (Relational…
Added 1 hour ago
Senior Controls Engineer
Florida Crystals Corporation
Baltimore, MD
The Senior Controls Engineer is the refinery’s technical authority for automation, instrumentation, industrial networking, and process control systems. This role ensures reliable, secure,…
Added 2 hours ago
Senior Staff Software Engineer
EarnIn
Mountain View, CA
We seek an experienced, passionate, and resourceful Senior Staff Software Engineer to join our product engineering team. You will work cross-functionally with various teams and contribute…
Added 2 hours ago
BIM/Field Engineer
Five Star Electric Corporation
Brooklyn, NY
Five Star Electric, a Tutor Perini Company, is seeking a BIM/Field Engineer for our office in Brooklyn, Jail.
Added 2 hours ago
AS
Mission Assurance Engineer, Senior (Part-Time)
AMERICAN SYSTEMS
Washington, DC
- $75 to $95 USD / hour
- Part-time
AMERICAN SYSTEMS, a 100% employee-owned federal contractor, is seeking a highly experienced part-time Senior Mission Assurance Engineer to support the quality, reliability, safety, and…
Added 2 hours ago
AS
Field Service Engineer, Lead
AMERICAN SYSTEMS
Plano, TX
- $110,000 to $176,000 USD / year
Partner with engineering and development teams to address recurring issues and improve system reliability.
Added 2 hours ago
Principal, Operations Engineer
Compass Datacenters
Dallas, TX
Compass is recruiting for a Principal, Operations Engineer, an individual contributor and senior technical expert supporting high-level facility engineering, commissioning, troubleshooting,…
Added 2 hours ago
Senior AI Tooling Software Engineer - Data Platform, Autonomy
Zipline
South San Francisco, CA
…build, and operate the world’s largest autonomous logistics system, delivering critical supplies quickly and reliably. Today, Zipline operates on four continents, makes a delivery somewhere…
Added 2 hours ago
Senior Connectivity Systems Engineer
Mossville, IL
The Senior Connectivity Systems Engineer will provide end-to-end technical leadership for the development, integration, and delivery of machine connectivity capabilities. This role will…

Closed listing

Mastercard

Software Engineer II

O Fallon, MO, United States

Pay Ranges O'Fallon, Missouri: $92,000 - $147,000 USD

This opening has closed.

The original listing is kept below for reference.

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Job details

Pay: Pay Ranges O'Fallon, Missouri: $92,000 - $147,000 USD
Posting language: English
Posted: Nov 4, 2026

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Original job description

Archived listing. The details below describe a past opening.

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

Software Engineer II

About the Role

The Mastercard Remote Payment Presentment Service (RPPS) Program is engaged in developing innovative solutions to keep Mastercard positioned as a leader in delivering value-added services and seamless customer onboarding. 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 hiring a Software Engineer II, and the successful candidate will contribute to the design, development, testing, deployment, and support of enterprise applications while applying software engineering principles to deliver scalable, secure, resilient, and maintainable solutions. This role will collaborate closely with cross-functional teams and contribute to continuous improvement initiatives that enhance application quality, reliability, and operational excellence.

Role

Participate in the gathering and analysis of business requirements and translate them into scalable, maintainable, and secure software solutions.
Participate in application design discussions and contribute to software architecture, design patterns, component interactions, and technology standards under the guidance of senior engineers and technical leads.
Develop solutions that align with Mastercard Enterprise Architecture standards while leveraging enterprise services, frameworks, and reusable platforms.
Contribute to ensuring product development meets Mastercard's business, scalability, performance, security, and reliability requirements.
Follow Mastercard development methodologies, engineering standards, and documentation practices when designing and building software solutions.
Participate in code reviews to improve code quality, maintainability, security, consistency, and adherence to software engineering best practices.
Collaborate with team members, share knowledge, and seek guidance from senior engineers when addressing highly complex technical challenges.
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, quality, and reliability.
Support continuous integration and continuous testing practices to improve software quality and release confidence.
Develop and maintain software solutions that support high availability, resiliency, operational readiness, and reliability objectives.
Respond to operational and business concerns related to applications, projects, and platform enhancements to ensure consistent delivery of quality services.
Investigate and resolve production, application, integration, and infrastructure issues using structured troubleshooting, root cause analysis, and corrective actions, escalating highly complex issues when appropriate.
Support compliance with required certifications and regulatory 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 and remediate application security vulnerabilities while ensuring alignment with Mastercard security standards and industry best practices.
Contribute to application performance optimization through monitoring, analysis, tuning, and scalability improvements across applications, APIs, databases, and cloud environments.
Apply data structures, algorithms, and software engineering principles to develop efficient, scalable, and maintainable software solutions.
Develop, test, deploy, monitor, and support cloud-based applications and services using AWS and cloud-native technologies while following established architecture patterns and engineering standards.
Design and build solutions with operational readiness in mind, incorporating observability, logging, monitoring, alerting, supportability, reliability, and maintainability best practices.
Contribute to the continuous improvement and expansion of the platform by helping ensure that solutions remain resilient, secure, scalable, highly available, and operationally efficient.
Collaborate with product owners, business partners, and engineering teams to understand requirements and provide technical input supporting product and platform objectives.

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 able to function effectively in a fast-paced environment with a high degree of initiative and accountability.
Strong interpersonal and relationship-building skills with a proven ability to collaborate effectively across teams.
Excellent communication skills with the ability to interact across organizational levels and partner effectively with technical and non-technical stakeholders.
Strong understanding of data structures, algorithms, object-oriented design principles, and scalable application development techniques.
Experience developing and enhancing scalable, secure, maintainable, and high-performing enterprise software solutions.
Experience participating in code reviews and applying engineering best practices to improve software quality, maintainability, and security.
Experience developing unit, functional, integration, and automated testing solutions within enterprise applications.
Experience analyzing application performance, identifying bottlenecks, and implementing optimization improvements 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 and non-relational database technologies including Oracle, SQL Server, MySQL, PostgreSQL, NoSQL, MongoDB, or comparable technologies.
Demonstrated troubleshooting and root cause analysis skills supporting business-critical applications in production environments.
Experience in the following is 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 working within Agile and Waterfall delivery methodologies.
Experience developing and supporting cloud-native applications utilizing AWS cloud services.
Understanding observability, monitoring, operational readiness, and reliability engineering concepts.
Bachelor's degree in information systems, Information Technology, Computer Science, Engineering, or equivalent practical experience 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: $92,000 - $147,000 USD

About employer

More about this job

Skills

Onboarding
Engineering principles
Process improvement
Architecture regulations
Documentation
CI/CD
Troubleshooting
Root cause analysis
Regulatory compliance
Design principles
Software development
Security regulations
AWS
Problem solving
Relationship building
Communication skills
Oracle Java
Oracle
Microsoft SQL Server
MySQL
PostgreSQL
NoSQL
MongoDB
API development
IBM WebSphere
Jboss
Apache Tomcat
HTML
JavaScript
jQuery
UNIX
AWK
CSS
C#
React
Microsoft Visual Studio
RAD
Agile
Computer technology
Computer science

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