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Added 12 mins ago
Principal Agentic AI Security Engineer
Hewlett Packard Enterprise
Spring, TX · San Jose, CA · Frisco, TX · Ft. Collins, CO · Alpharetta, GA · Durham, NC
The Agentic AI Engineer is responsible for designing, building, and operating production-grade agentic systems that combine foundation models, software services, enterprise data, tools, and…
Added 16 mins ago
Site Reliability Engineer - Tampa (Hybrid)
Hearst
Tampa, FL
MHK is hiring for a technically savvy Site Reliability Engineer (SRE) who will help ensure the reliability, availability, scalability, and performance of our healthcare technology…
Added 31 mins ago
O
Principal Platform Software Engineer - JOIN OCI NASHVILLE!
Oracle
Bismarck, ND
- $104,500 to $234,600 USD / year
Oracle Cloud Infrastructure (OCI) Log Analytics is a cloud-scale observability platform that enables customers to search, analyze, and derive actionable insights from massive volumes of…
Added 44 mins ago
RU
Senior Technical Lead - Java / Distributed Systems
Randstad USA
Washington, DC
- $55 to $60 USD / hour
Ensure Operational Observability & Security: Implement distributed tracing, metrics, centralized logging, secrets management, and robust API security standards (OAuth2, JWT).
Added 55 mins ago
Principal Agentic AI Security Engineer
Hewlett Packard Enterprise
Spring, TX · San Jose, CA · Frisco, TX · Ft. Collins, CO · Alpharetta, GA · Durham, NC
The Agentic AI Engineer is responsible for designing, building, and operating production-grade agentic systems that combine foundation models, software services, enterprise data, tools, and…
Added 1 hour ago
Senior Core Infrastructure Engineer
Oracle
Santa Clara, CA · Seattle, WA
Observability and Performance: Drive reliability, scalability, and operational readiness through capacity planning, incident response, root cause analysis, and continuous improvement.
Added 1 hour ago
Associate Software Engineer (Hybrid)
Vizient
Irving
Contribute to application security, accessibility, observability, performance, and operational readiness.
Added 1 hour ago
WI
Distinguished, Software Engineer (Architect) | Omni Services | Sunnyvale
Walmart Inc.
United States
- $169,000 to $338,000 USD / year
Establish architectural standards focused on scalability, resiliency, security, observability, and operational excellence.
Added 1 hour ago
Senior Core Infrastructure Engineer
Oracle
Santa Clara, CA · Seattle, WA
Observability and Performance: Drive reliability, scalability, and operational readiness through capacity planning, incident response, root cause analysis, and continuous improvement.
Added 2 hours ago
Software Systems Engineer, Data Labeling Engineering - Early Career
General Motors LLC
Sunnyvale, CA
As an early-career Software Engineer on the Data Labeling Engineering team, you will build tools and services that help machine learning teams create high-quality training data for…
Added 2 hours ago
Senior Test Automation Engineer
STERIS Corporation
Houston, TX
The Senior Test Automation Engineer is responsible for establishing and owning the automated quality engineering capabilities that support the long-term success of the SPM Cloud platform.…
Added 2 hours 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 2 hours ago
Software Development Engineer II, Security Products
Amazon.com Services LLC
Austin, TX · Seattle, WA
…inheriting legacy systems. We're looking for a Software Development Engineer II who thrives in ambiguity, thinks like a product architect, and brings a builder's mindset to defensive…
Added 2 hours ago
Software Engineering Lead
EarthOptics
Raleigh, NC
…connects field applications, laboratory automation, hardware, and data systems. This role is ideal for an engineer who enjoys moving between production software and physical systems, takes…
Added 2 hours ago
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AI Engineer II
Federal Express Corporation
Memphis, TN · Coraopolis, PA · Plano, TX
- $11,410.38 USD / month
The AI Engineer is responsible for designing, developing, deploying, and maintaining artificial intelligence and machine learning solutions that support intelligent automation, predictive…
Added 3 hours ago
Staff Data Engineer
Fanatics Betting & Gaming
NY · Jacksonville, FL
We’re looking for a Staff Data Engineer to join our Data Engineering team, which builds and governs the data foundation that powers the business. You’ll set technical direction for our…
Added 3 hours ago
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Lead Principal Application Software Engineer
Oracle
United States
- $104,600 to $264,100 USD / year
…better experience and easier access to health and research data for patients and healthcare providers. We are looking for hands-on lead engineers with expertise and passion in solving…
Added 3 hours ago
Sr. NMS (Network Management System) Engineer
Micas Networks
San Jose, CA
Micas is seeking a top-tier Sr. NMS (Network Management System) Engineer to design, develop and deliver the management, monitoring and telemetry layer for Micas white-box switches. You will…
Added 3 hours ago
Senior Site Reliability Engineer
Applaudo Studios
Louisville, KY
You are a Senior Site Reliability Engineer with strong cloud and reliability engineering fundamentals and the versatility to work across edge infrastructure, enterprise networking, mobile…
Added 3 hours ago
Senior Software Engineer
Grainger Businesses
CHICAGO, IL
As a Senior Software Engineer (Software Engineer III), you will be involved in the full systems life cycle and responsible for designing, coding, configuring, testing, implementing and…
Added 3 hours ago
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Distinguished, Software Engineer
Walmart
SUNNYVALE, CA
- $169,000 to $338,000 USD / year
· Establish technical standards and architecture principles for APIs, distributed systems, events, data contracts, caching, observability, fault isolation, security, performance,…
Added 3 hours ago
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Staff, Software Engineer - Full Stack
Walmart
SUNNYVALE, CA
- $143,000 to $286,000 USD / year
Ability to reason across multiple services and teams simultaneously - identifying cross-cutting concerns (shared data models, consistency guarantees, API contracts, observability) and…
Added 3 hours ago
Quality Engineer, AI & Test Automation
Baylor Scott & White Health
Montpelier, VT
· Translate requirements, user stories, workflows, APIs, data dependencies, and operational expectations into clear test scenarios and quality validation plans.
Added 3 hours ago
Software Engineer, Triage Services
Apple
Cupertino, CA
Architect and lead delivery of the end-to-end agentic triage platform, including agent orchestration, tool integration, data pipelines, and the build and integration lifecycle, with a focus…
Added 4 hours ago
Hardware Systems Engineer - AI Hardware
Cloudflare
Austin, TX
…as well as PDUs and network hardware. As a Hardware Systems Engineer, you will work with colleagues on the Engineering teams, Product and Performance teams, and Hardware Sourcing teams to…

US: Mastercard Technologies, LLC

Software Engineer II

O'Fallon, MO, United States

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

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Job details

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

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

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