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Added 8 mins ago
Missile Integration Technical Lead - 20695
Northrop Grumman
Roy · Corinne
Northrop Grumman Defense Systems is seeking a Missile Integration Technical Lead - Senior Staff Systems Test Engineer to join the Sentinel program in enhancing the US Space Force’s ICBM…
Added 8 mins ago
Principal Optical Engineer - 3
Northrop Grumman
Chandler
Northrop Grumman Space Systems is looking for a Principal Optical Engineer to support the Electro‑Optics Group within the Launch Vehicles business unit in Chandler, Arizona.
Added 8 mins ago
Industrial Engineer - Level 2 or Level 3
Northrop Grumman
Harvard
Northrop Grumman’s Space Sector is seeking an Industrial Engineer – Level 2 to join our team in Devens, MA. This position is 100% onsite and cannot accommodate telecommute work.
Added 9 mins ago
Sr Principal Mechanical Engineer - 20694
Northrop Grumman
Roy · Vandenberg Space Force Base
Northrop Grumman Defense Systems is seeking a Sr. Principal Mechanical Engineer. This position is located in Roy, UT with an alternat location of Vanderburg Space Force Base (VSFB), CA and…
Added 17 mins ago
Principal Structural Engineer – Technical Reviewer (Casual)
Parsons Transportation Group
IL
Parsons is looking for an amazingly talented Principal Structural Engineer - Technical Reviewer to work on very high-level and technically challenging projects to join our team! In this…
Added 19 mins ago
Sr Software Engineer
ServiceNow
Santa Clara, CA
It all started when engineer Fred Luddy wrote code that automated a tedious task for his coworker, Phyllis. She cried tears of joy. That moment inspired Fred to build a company that could…
Added 20 mins ago
Associate Software Engineer (Hybrid)
Vizient
Irving
Vizient is seeking an Associate Software Engineer to contribute to the design, development, testing, and delivery of scalable, secure, and user-centered software solutions.
Added 20 mins ago
LEAD PRINCIPAL ENGINEER, ID1 ATE DE PROC
Micron Technology
Boise
JR116983 LEAD PRINCIPAL ENGINEER, ID1 ATE DE PROC
Added 20 mins ago
Staff Thin Film Process Development Engineer
Micron Technology
Boise
JR108247 Staff Thin Film Process Development Engineer
Added 20 mins ago
HBM Design Architect
Micron Technology
Richardson
Direct experience with vertically coordinated DRAM technologies, gain-cell structures (2T0C/IGZO or similar), stacked memory builds, or other emerging memory programs
Added 25 mins ago
Mechanical Design Engineer
Ammortal Inc
Remote, United States
…production and continue to refine the Chamber, we need a mechanical engineer who can turn great ideas into parts and assemblies that are manufacturable, serviceable, and built to…
Added 28 mins ago
N
Staff Silicon Photonics Engineer, Receiver (Rx)
Neurophos
San Mateo, CA · Austin, TX
- $230,000 to $280,000 USD / year
Neurophos is looking for a Silicon Photonics Engineer to lead the receiver (Rx) photonic integrated circuit for our OPU platform, including the T100 optical AI inference chip. You will own…
Added 28 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 48 mins 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 56 mins ago
CIVIL ENGINEER
Naval Air Systems Command
Patuxent River, MD
Added 56 mins ago
Continuous Improvement Engineer
BAE Systems
Rockville, MD
BAE Systems is seeking a Lean Six Sigma Green Belt Continuous Improvement Engineer to support our work as a prime contractor on a high-profile U.S. Navy weapon system. A strategic mindset,…
Added 1 hour ago
JR
Engineer Mechanic 2
JC Resorts
La Jolla, CA
- $33 to $35 USD / hour
…including vintage-era equipment and mechanical systems. The Engineer 2 responds promptly to maintenance requests, supports the preservation and functionality of unique historic systems, and…
Added 1 hour ago
AI Engineer (AI Accelerator Program)
UCSF
San Francisco, CA
UCSF Health is seeking a highly skilled AI Engineer to design, build, and deploy scalable AI-driven applications that improve clinical operations, patient care, and health system…
Added 1 hour ago
Space Vehicle Production Engineer
SAIC
Chantilly, VA
This position is for a Space Vehicle Production Engineer in Chantilly, VA supporting cutting-edge and innovative space programs. The Space Vehicle Production Engineer will work daily…
Added 1 hour ago
Section Manager - Structures
HNTB Corporation
Harrisburg, PA
Added 1 hour ago
SP
Distribution Design Engineer (Entry, Staff, Senior)
Southwestern Public Service Co
Lubbock, TX · Amarillo, TX
- $70,000 to $129,267 USD / year
…involves conventional types of plans, investigations, surveys, structures or equipment with relatively few complex features for which there are precedents. Activities are of limited scope…
Added 1 hour ago
M-
Engineer I - Software
Microchip - USA
CA
- $70,304 to $143,000 USD / year
Strong knowledge in C++, as well as a deep understanding of algorithms and data structures
Added 1 hour ago
A
Systems Engineer
Actalent
Mukilteo, WA
- $135,000 to $160,000 USD / year
Job Title: Systems EngineerLocation: Mukilteo, WAJob DescriptionThe Systems Engineer provides program-level technical leadership to mature complex aerospace and defense products from…
Added 1 hour ago
EE
Senior Mechanical Engineer (Primary Structures)
Endurance Energy
Seattle, WA
- $170,000 to $230,000 USD / year
…interfaces, and the pressure housings and pressure-tolerant structures that mount to the frame. You will share that scope with a few other engineers, and specific structures will be yours…
Added 1 hour ago
EE
Senior Mechanical Engineer (Electromechanical)
Endurance Energy
Seattle, WA
- $170,000 to $230,000 USD / year
…engineers who split the plant's hardware between them. Each engineer owns their hardware end to end: requirements, design, drawings, build, test, and deployment. Principal engineers own the…

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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About employer

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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