Jobs in the United States

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Added 3 mins ago
GD
School Culture Associate
Green Dot Public Schools
Los Angeles, CA
- $22.11 to $23.88 USD / hour
react quickly and appropriately in emergencies
Added 21 mins ago
C
Software Engineer Full Stack / Backend I (Full Time) - United States
Cisco
Austin, TX
- Full-time
…enterprises to visualize, tackle, and optimize complex cloud-native architectures in real time, serving as a vital pillar in Cisco and Splunk’s unified Observability and Cloud Operations…
Added 30 mins ago
Senior Test Automation Engineer
STERIS Corporation
Houston, TX
Experience testing React-based applications and modern web architectures.
Added 32 mins ago
Software Developer (Remote)
Koniag Government Services
MD
The Software Developer works closely with the CTIS‑M DME team to build backend services, user interfaces, workflow logic, and cloud-native features using technologies such as.NET 10, React,…
Added 32 mins ago
QA Automation Engineer (Remote)
Koniag Government Services
MD
Validate .NET 8 APIs, React UI flows, and workflow logic across CTIS‑M RG modules.
Added 38 mins ago
AI Engineer (AI Accelerator Program)
UCSF
San Francisco, CA
Identify and build systems for implementation, monitoring, and maintenance of AI/ML tools using modern MLOps practices including CI/CD, model versioning, and cloud-native deployment.
Added 57 mins ago
TT
Product Engineer, Mid-Senior
True Talent Solutions Partners
New York, NY
- $140,000 to $200,000 USD / year
- Experience shipping scalable applications across frontend and backend, with skills in TypeScript, React or React Native, Node.js, and PostgreSQL.
Added 58 mins ago
Software Engineering Lead
EarthOptics
Raleigh, NC
Maintaining or shipping a production mobile application. React Native and TypeScript/JavaScript experience is strongly preferred.
Added 1 hour ago
TT
Founding Full-Stack Engineer
True Talent Solutions Partners
San Francisco, CA
- $180,000 to $240,000 USD / year
- Strong full-stack skills with technologies such as TypeScript, Python, React, React Native, Node.js, AWS, GCP, or similar platforms.
Added 2 hours ago
Senior Software Engineer
Grainger Businesses
CHICAGO, IL
This role is primarily focused on frontend development (approximately 70%) using React, Next.js, and TypeScript, while also contributing to backend services and event-driven systems…
Added 2 hours ago
UG
Software Engineer (Full Stack Developer) - Remote
UnitedHealth Group
Austin, TX
- $72,800 to $130,000 USD / year
We are seeking a highly motivated Software Engineer (Full Stack Developer) to design, develop, and support modern enterprise web applications. In this role, you will work across the full…
Added 2 hours ago
CS
Cloud Engineer II (Full Time) - United States
Cisco Systems, Inc.
Milpitas, CA
- Full-time
…exciting is the scale of our impact; we are building cloud-native, AI-integrated solutions that solve the most complex challenges in zero-trust security and identity management. If you are…
Added 2 hours ago
Senior Software Engineer
US: Mastercard Technologies, LLC
O'Fallon, MO
…technical solutions using JAVA technology stacks and Angular/ React front-end technologies. The successful candidate will contribute to software architecture, performance engineering,…
Added 2 hours ago
Software Engineer II
US: Mastercard Technologies, LLC
O'Fallon, MO
Develop, test, deploy, monitor, and support cloud-based applications and services using AWS and cloud-native technologies while following established architecture patterns and engineering…
Added 2 hours ago
Engineer 1 - Inventory
Nordstrom Inc
Seattle, WA
…Kubernetes. You are able to clearly articulate what building cloud native applications entails and have experience using at least one of the two major cloud platforms. (AWS, GCP). You are…
Added 2 hours ago
Principal Software Engineer, Agentic UX
Workday, Inc.
CA
…capabilities that bring Workday’s agents to life. You are an AI-native builder, not a pure frontend developer. You will own features end-to-end, connecting the agentic logic directly to the…
Added 2 hours ago
Senior Full Stack AI Engineer (US Citizen)
Remote, United States
Full-stack engineering skills, including modern front-end frameworks (e.g., Next.js/React), back-end services, RESTful APIs, microservices, and cloud-native deployment (e.g., containers,…
Added 2 hours ago
Senior Java Full Stack Engineer
Capgemini
New York, NY, NY · Irving, TX, TX
…expertise in designing, developing, and deploying scalable cloud-native applications on AWS. The ideal candidate will have deep experience in Java-based microservices, AWS services, modern…
Added 3 hours ago
Software Engineer, Backend
Vercel
San Francisco, CA
…from idea to production with speed, security, and exceptional developer…
Added 3 hours ago
Associate Software Engineer (Hybrid)
Vizient, Inc.
Irving, TX
Contribute to web applications using React, TypeScript, or comparable frontend technologies.
Added 3 hours ago
Full-Stack Developer
Vamonos IT
Remote, United States
Full-Stack Developer to design, develop, modernize, and maintain enterprise-level software applications supporting mission-critical federal government operations.
Added 3 hours ago
Java Product Engineer / Full Stack Java Developer
Vamonos IT
Remote, United States
Java Product Engineer / Full Stack Java Developer to design, develop, modernize, deploy, and support enterprise software applications in mission-critical environments.
Added 3 hours ago
Infrastructure Software Engineer II (Remote - US)
BNSF Railway
United States
This is a full stack infrastructure engineering role, involving backend services, APIs, and developer-facing tooling for our infrastructure and platform services
Added 3 hours ago
Principal Software Engineer
Partners Capital
Boston, MA
Experience in Azure native components e.g. Service Bus, Durable Function Apps, Container Apps, App Insights etc.
Added 3 hours ago
UG
Software Engineer (Full Stack Developer) - Remote
UnitedHealth Group
Austin, TX
- $72,800 to $130,000 USD / year
We are seeking a highly motivated Software Engineer (Full Stack Developer) to design, develop, and support modern enterprise web applications. In this role, you will work across the full…

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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