Jobs in the United States

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Added 1 min ago
Sr. System Robotics Test Engineer
Stryker
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 3 mins ago
Silicon Validation Lead, Principal Engineer - 19499
Synopsys
Sunnyvale, CA
…technology powers the Era of Pervasive Intelligence, leading in chip design, verification, and IP integration. Join us to transform the future through continuous technological…
Added 3 mins ago
Solutions Engineering Architect - 19495
Synopsys
Sunnyvale, CA
Engage directly with customer architects and SoC leads at top-tier HPC and AI companies to gather system requirements, understand design constraints, and translate them into IP integration…
Added 7 mins ago
Senior Flight Test Engineer - Mission Autonomy (UAS - Fury)
Anduril Industries
Costa Mesa, CA
The Test and Evaluation team at Anduril is integral to our mission, ensuring that every product meets the highest standards of performance and reliability. We are at the forefront of…
Added 7 mins ago
Flight Test Engineer - Mission Autonomy (UAS - Fury)
Anduril Industries
Costa Mesa, CA
The Test and Evaluation team at Anduril is integral to our mission, ensuring that every product meets the highest standards of performance and reliability. We are at the forefront of…
Added 7 mins ago
Flight Test Engineer - Mission Autonomy
Anduril Industries
Costa Mesa, CA
The Test and Evaluation team at Anduril is integral to our mission, ensuring that every product meets the highest standards of performance and reliability. We are at the forefront of…
Added 22 mins ago
CS
Software Engineer Full Stack / Backend I (Full Time) - United States
Cisco Systems, Inc.
Remote, United States
- Full-time
Author clear technical documentation, participate in constructive code reviews, and contribute innovative system design ideas to continuously elevate team standards.
Added 29 mins ago
Salesforce Solution Architect
Global Career Website
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…solutions for global brands. Operating with a "Forward Deployed Engineer" (FDE) design focus, you will act as a critical technical authority during the entire project lifecycle, from…
Added 30 mins ago
ML
Thermohydraulic Test Engineer
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Washington, DC
- $125,000 to $175,000 USD / year
The Prototype and Test Engineer is a high-responsibility, hands-on engineering role focused on the design, assembly, and testing of prototype hardware and systems. This position is critical…
Added 31 mins ago
Founding Data Engineer, AI Platform
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…testing, and shipping the software that automates enterprise data integration, transformation, modeling, and…
Added 33 mins ago
Principal Automation Engineer
Stellix
Foxborough, MA
We are seeking a Principal Automation Engineer to join our Project Services group. In this role, you will serve as a technical leader on complex automation projects, contributing across the…
Added 33 mins ago
Supervising Senior Automation Engineer I
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Foxborough, MA
…team provides large project engineering, site engineering and integration engineering services using the DeltaV Automation System. Engineers leverage their expertise and knowledge of…
Added 33 mins ago
Senior Automation Engineer (Back-End SCADA)
Stellix
Foxborough, MA
Perform design review and technical sign-off on deliverables from the Database & Integration Engineer and the Controls / OT Integration Engineer
Added 36 mins ago
Principal Engineer
Modern Relay
New York City, NY · San Francisco, CA
We’re looking for a Principal Engineer to lead the design and delivery of core platform capabilities across our stack. You’ll operate as a senior technical leader - owning architecture…
Added 42 mins ago
H
AI Platform Engineer
Harper
San Francisco, CA
- $140,000 to $230,000 USD / year
…$8M seed round, we're looking for an exceptional AI Platform Engineer who can architect and develop the core infrastructure that powers our entire AI…
Added 44 mins ago
AI Developer Relations Engineer (Copy)
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…of a conversation to a community the traditional financial system has historically…
Added 47 mins ago
Founding Engineer Persistent Spatial Worlds (Unity + AI)
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The system turns environments - starting with university campuses - into interactive canvases where students coordinate actions and co-create digital artifacts anchored to real locations.
Added 48 mins ago
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Controls Engineer
B-K Tool & Design
Mooresville, IN
- $100,000 to $115,000 USD / year
JOB DESCRIPTION: This individual should be an experienced controls engineer familiar with the Indiana area. As the individual gets familiar with our engineering of automation solutions, the…
Added 50 mins ago
Sr IT Software Engineer
Palo Alto Networks, Inc.
CA
The Senior Software Engineer on the Data & Analytics team will design, build, and support full-stack applications; integrate AI technologies into existing and new applications to deliver…
Added 53 mins ago
Senior Software Engineer (full stack)
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Contribute to innovation within the company by bringing new ideas and approaches to improve system integration and performance.
Added 53 mins ago
Hardware Engineer
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United States
Our first product is the IBBX Retina Suite for industry 4.0, a set of sensors that feed from the machine’s (wasted) electromagnetic energy, and they just work – no cable, no battery…
Added 54 mins ago
Integration Engineer, Heatshield (Starship)
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Starbase, TX · Brownsville, TX
Starship requires a robust Thermal Protection System (TPS) to withstand the extreme heat generated during atmospheric reentry at hypersonic speeds. The thermal hardware team is responsible…
Added 55 mins ago
MT
Lead Engineer
Medina Talent Group
Irvine, CA
- $135,000 to $150,000 USD / year
The Lead Engineer for Enterprise Applications is responsible for driving the design, development, modernization, and lifecycle management of enterprise application portfolios. This role…
Added 56 mins ago
Founding Frontend/UX Engineer
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New York City, NY
A blank canvas to shape the product: We're still early - this is the rare chance to define the UX foundation, the design system, and the visual identity of a category-defining platform…
Added 56 mins ago
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Senior Site Reliability Engineer
SunCore Digital
Remote, United States
- $145,000 to $185,000 USD / year
SunCore Digital is seeking a hands-on Senior Site Reliability Engineer to assess the current reliability and scalability of our systems, identify risks, and implement the technical changes…

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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