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Added 5 mins ago
IG
Software Development Engineer in Test (SDET) – Backend/API
Insight Global
Remote, United States
- From $65 USD / hour
Insight Global is seeking an experienced Software Development Engineer in Test (SDET) to support automated testing efforts for a large-scale application environment. This individual will…
Added 8 mins ago
Software Engineer (AHT)
Northrop Grumman
Beavercreek
The Electro-Magnetic Warfare Integrated Reprogramming Database (EWIRDB) Modernization team warmly invites you to apply to be a software engineer on our development team. Our team size is…
Added 8 mins ago
Senior Principal Systems Engineer *
Northrop Grumman
Fairfax · Morrisville
Northrop Grumman’s Space Systems Sector is seeking a Systems Engineer – Level 4 to join our team in our Fairfax, VA or Morrisville, NC locations.
Added 8 mins ago
Principal / Senior Principal Logistics Engineer
Northrop Grumman
Los Angeles
Northrop Grumman is seeking a Principal or Senior Principal Logistics Engineer with the ability to obtain a security clearance to work with our Specialty Engineering Team out of Woodland…
Added 9 mins ago
Flight Software Engineer - Level 3/4 (AHT)
Northrop Grumman
Redondo Beach
Northrop Grumman’s Space Sector is seeking a Flight Software Engineer - Level 3/4 to join our Western Region Software Engineering team. This position is located onsite in Redondo Beach, CA.
Added 11 mins ago
Senior Software Engineer, Cloud Product Engineering
Aerospike, Inc.
Mountain View, CA
We’re looking for a Senior Software Engineer to help build the product experience for Aerospike Cloud - our multi-cloud, fully managed database service.
Added 13 mins ago
OpCon Workload Automation Administrator - Software Engineer III
Deloitte US
Des Moines, IA
We are seeking a OpCon Workload Automation Administrator - software engineer III to support the design, development, testing, and deployment of technology solutions for Deloitte’s…
Added 19 mins ago
Software Engineer
John Deere
Milan
As a Software Engineer for JD North American Parts Distribution Center located in Milan, IL you will:
Added 23 mins ago
Mobile Consumer Engineer
Reacher
United States
…describe the creator they want and AI finds matches from a database of 4M+ creators. They can automate outreach by DM, Target Collab, and email (up to 10,000 creators a day) and track…
Added 27 mins ago
MA
2027 Technology Development Program - Operating Systems Engineer
Manufacturers and Traders Trust Co
Buffalo, NY
- $29.57 to $43.99 USD / hour
…Networking, Application Development, Platform Operating Systems, Database, Data Analytics or Information…
Added 28 mins ago
Electrical Engineer - Electrical Pre-Assignment
SSOE, Inc.
Chandler, AZ
The Electrical Engineer - Pre-Assignment owns the integrity of the electrical pre-assignment database that drives semiconductor process tool hookup design. In this role you are accountable…
Added 36 mins ago
DevOps Engineer I
USA MOT Motion Industries, Inc.
Birmingham, AL
Under close supervision, the DevOps Engineer I supports the development, security, infrastructure, and operations teams in delivering secure, reliable, and automated software delivery…
Added 54 mins ago
Senior Test Automation Engineer
STERIS Corporation
Houston, TX
While the formal title is Senior Test Automation Engineer, this is fundamentally a Senior Software Development Engineer in Test (SDET) role that requires deep software development expertise…
Added 56 mins ago
QA Automation Engineer (Remote)
Koniag Government Services
MD
Koniag Data Solutions, a Koniag Government Services company, is seeking an experienced QA Automation Engineer to support the USDA APHIS Plant Protection and Quarantine (PPQ) Commodity…
Added 56 mins ago
Senior/Principal Systems Modeling & Simulation Engineer
Trinzic
Greenbelt, MD
Position SummaryKBR is seeking a Senior/Principal Systems Modeling & Simulation/Systems Engineer to join the Structural Engineering and Analysis team supporting NASA Goddard Space Flight…
Added 56 mins ago
Cyber Systems Engineer – VAX/OpenVMS
ASRC Federal Holding Company
Aberdeen Proving Ground, MD
…VAX/OpenVMS hardware and software, working alongside the RSCCE Database Engineer and Front End GUI…
Added 57 mins 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 57 mins ago
Senior Data Engineer - Financial Systems (Hybrid)
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
Lear 45 Captain
Breeze Aviation Group, Inc.
United States
Must have 2,500+ hours total time (not including simulator and/or Flight Engineer time)
Added 1 hour ago
Systems Engineer Sr Principal
SAIC
Aurora, CO
SAIC is looking for a Systems Administrator/Network Engineer/Spacecraft Command/Control Scheduler. Duties will include coordinating and managing end to end architecture by scheduling…
Added 1 hour ago
Data Engineer
CB&I
The Woodlands, TX
The Data Engineer is responsible for designing, developing, integrating, and optimizing enterprise data platforms, pipelines, and data models that support reporting, analytics, automation,…
Added 1 hour ago
Service Delivery Center, Senior Data Engineer
EY
San Antonio, TX · Dallas, TX
Certification on any database management system, any reporting or data visualization or any programming or statistical language
Added 1 hour ago
Senior AI Tooling Software Engineer - Data Platform, Autonomy
Zipline
South San Francisco, CA
As an AI tooling engineer on the Autonomy team, you will build and scale the systems that help our teams visualize, annotate, debug, and extract signals from vehicles making real-world…
Added 1 hour ago
MP
Data Engineer
Manatt, Phelps & Phillips, LLP
NY
- $160,000 to $190,000 USD / year
We are seeking a Mid-Level Data Engineer with SQL Server Administration (DBA) experience to join our team. In this role, you will be responsible for ELT processes that move critical data…
Added 1 hour ago
Staff Data Engineer
Fanatics Betting & Gaming
NY · Jacksonville, FL
…Sportsbook and iGaming platform. Fanatics has an established database of over 100 million global sports fans; a global partner network with approximately 900 sports properties, including…

Closed listing

Mastercard

Senior Software Engineer

O Fallon, MO, United States

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

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

About employer

More about this job

Skills

Reporting
React
Software development
Process improvement
Documentation
Engineering principles
CI/CD
Troubleshooting
Root cause analysis
Regulatory compliance
Design principles
Security regulations
AWS
Develop business case
Problem solving
Relationship building
Collaboration
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#
Microsoft Visual Studio
RAD
Apache Maven
Gradle

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