Mastercard · 6 hours ago
Software Engineer II
O'Fallon, MO
Full-time
Hybrid
Mid Level
$92K/yr - $147K/yrMastercard is a global technology company in the payments industry, striving to connect and power an inclusive digital economy. The Software Engineer II role involves owning software delivery tasks, troubleshooting existing code, and participating in agile processes to ensure high-quality software development.
FinanceFinancial ServicesInformation TechnologyPayments
Responsibilities
Own software delivery tasks (code development, test, deployment) at an application/software component level
Able to troubleshoot and refactor existing code for exceptional code quality
Adopt new languages and architecture patterns needed for the work
Participate and contribute to the team’s agile process and decisions
Pull from backlog and deliver work after seeking guidance from experienced team members and in partnership with full scrum team. (Agile)
Understands the big picture and end-to-end logical architecture of systems in ownership areas
Provide feedback and suggestions on areas to improve
Understands the use of Mastercard technology policies in everyday work
Demonstrate active learning and sharing of software practices via Guild/Engineering community initiatives
Influence the decisions made by the team
Assist peers and less experienced members
Influence the decisions made by the team
Assist in technical documentation of APIs and services being delivered
Qualification
Required
Strong hands-on experience in JAVA Spring Boot for developing scalable and high-performance applications
Working knowledge of cloud platforms (AWS preferred)
Clear experience working with messaging solutions and integration patterns, such as Apache Kafka, NATS, and MQ
Familiar with secure coding standards (e.g., OWASP, CWE, SEI CERT)
Understands and implements standard branching (e.g., GitHub) and peer review practices
Apply tools (e.g., Sonar, Blackduck and Checkmarks) and techniques to scan and measure code quality and anti-patterns as part of development activity
Understands and builds test code at unit level, service level, and integration level to ensure code and functional coverage
Understands the use of basic design patterns (e.g., factory, adaptor, singleton, composite, observer, strategy, inversion of control)
Understands requirement analysis being essential part of delivering value to our customers and partners and participate in elaboration, prioritization, and effort estimation
Understands agile and modern SDLC practices (Scrum/Kanban/Continuous Delivery/DevOps/Quality engineering) and the delivery situations they are used for
Understands the basic engineering principles used in building and running mission critical software capabilities (security, customer experience, testing, operability, simplification, service-oriented architecture)
Familiar with different application patterns to implement different types of business processes (e.g., APIs, event-driven-services, batch-services, web-applications, big data)
Understands Continuous Integration (CI) and Delivery (CD) concepts, and capabilities to support automation, pipelines, virtualization, and containerization
Has ability to write code (in languages such as Java preferred and JavaScript) to build automation tasks that are repeatable and efficient
Understands functional and non-functional testing types to elaborate and estimate test efforts
Preferred
Knowledge and experience of Apache Fink and stateful stream processing concepts
Familiarity with configuration management tools, such as Ansible, Chef
Infrastructure as code and cloud first software development knowledge experience
Benefits
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
56 hours of Paid Sick and Safe Time
Jury duty leave
On-site fitness facilities in some locations
Company
Mastercard
Mastercard is a financial network that processes payments between banks and cardholders.
Founded in 1966
10001+ employees
H1B Sponsorship
Mastercard has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (540)
2024 (319)
Funding
Current Stage
Public CompanyTotal Funding
unknown2006-05-25IPO
Leadership Team
Michael Miebach
Chief Executive Officer
Ed McLaughlin
President & Chief Technology Officer
Recent News
2026-01-25
2026-01-23
Company data provided by crunchbase