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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.</p>\n<p>Responsibilities:</p>\n<ul>\n<li>Participate in the gathering and analysis of business requirements and translate them into scalable, maintainable, and secure software solutions.</li>\n<li>Support the technical lead in defining application architecture, software design patterns, component interactions, and technology standards.</li>\n<li>Ensure software designs align with Mastercard Enterprise Architecture and leverage enterprise services and reusable platforms.</li>\n<li>Ensure product development meets Mastercard&#39;s business, scalability, performance, security, and reliability requirements.</li>\n<li>Conduct and participate in code reviews to improve code quality, maintainability, security, consistency, and 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The platform processes high-volume transaction events and delivers customer-facing notifications through email, SMS, and API channels.</p>\n<p>As a Software Engineer II, you will contribute to the design, development, testing, deployment, and support of backend services that power Notification Manager. You will work closely with Product, TPMs, Architects, QA, and partner engineering teams to deliver scalable, resilient, and secure solutions while continuing to grow your technical expertise.</p>\n<p>Responsibilities:</p>\n<ul>\n<li>Design, develop, test, and maintain Java/Spring Boot microservices.</li>\n<li>Design software components and service interactions that support scalability, maintainability, and reliability requirements.</li>\n<li>Implement enhancements, new features, and defect fixes across Notification Manager services.</li>\n<li>Participate in technical design discussions and translate requirements into working software.</li>\n<li>Write clean, maintainable, and secure code following Mastercard engineering standards.</li>\n<li>Develop and maintain automated unit, integration, and API tests.</li>\n<li>Contribute to modern event-driven architectures utilizing Kafka messaging and distributed processing patterns.</li>\n<li>Support ongoing platform modernization initiatives, including service decomposition, resiliency improvements, performance optimization, and cloud-native deployment practices.</li>\n<li>Participate in production support, incident response, and root cause analysis.</li>\n<li>Monitor system health using observability tools and metrics.</li>\n<li>Analyze application performance and implement improvements to optimize throughput, latency, scalability, and resource utilization.</li>\n</ul>\n<p>Requirements:</p>\n<ul>\n<li>Bachelor&#39;s degree in Computer Science, Engineering, or equivalent experience.</li>\n<li>2–5 years of software development experience.</li>\n<li>Experience developing applications using Java and Spring Boot.</li>\n<li>Understanding of REST APIs and microservice architectures.</li>\n<li>Familiarity with messaging or event-driven systems.</li>\n<li>Strong understanding of software design principles, object-oriented programming, data structures, and algorithms.</li>\n<li>Experience with source control, code reviews, and CI/CD practices.</li>\n<li>Working knowledge of SQL and relational databases.</li>\n</ul>\n<p>Benefits:</p>\n<ul>\n<li>Insurance (including medical, prescription drug, dental, vision, disability, life insurance)</li>\n<li>Flexible spending account and health savings account</li>\n<li>Paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave)</li>\n<li>80 hours of Paid Sick and Safe Time</li>\n<li>25 days of vacation time and 5 personal days</li>\n<li>401k with a best-in-class company match</li>\n<li>Deferred compensation for eligible roles</li>\n<li>Fitness reimbursement or on-site fitness facilities</li>\n<li>Eligibility for tuition reimbursement</li>\n</ul>\n<p style=\"margin-top:24px;font-size:13px;color:#666;\">Job Data by <a href=\"https://yubhub.co\">YubHub</a>.</p>","url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Software-Engineer-II---Decision-Management-Program_R-286598","directApply":true,"hiringOrganization":{"@type":"Organization","name":"Mastercard","sameAs":"https://mastercard.com","logo":"https://logos.yubhub.co/mastercard.com.png"},"x-apply-url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Software-Engineer-II---Decision-Management-Program_R-286598","x-work-arrangement":null,"x-experience-level":"mid","x-job-type":"full-time","x-salary-range":"$92,000 - $147,000 USD","x-skills-required":["Java","Spring Boot","REST APIs","microservice architectures","messaging or event-driven systems","software design principles","object-oriented programming","data structures","algorithms","source control","code reviews","CI/CD practices","SQL","relational databases"],"x-skills-preferred":["event-driven architectures (Kafka, MQ, or similar)","cloud platforms, PCF/Tanzu, Kubernetes, or containerized workloads","distributed systems concepts","observability tools such as Splunk, Dynatrace, Grafana, or Prometheus","CI/CD pipelines and automated testing frameworks","PCI, security, or regulatory requirements","high-volume transaction processing systems"],"x-benefits":["pension","dental","paid_leave","bonus"],"x-licences":[],"x-visa-sponsorship":"unknown","x-visa-sponsorship-text":null,"x-work-authorisation":"unknown","x-work-authorisation-text":null,"datePosted":"2026-10-27T00:00:00.000Z","jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"O'Fallon, Missouri"}},"employmentType":"FULL_TIME","occupationalCategory":"Engineering","industry":"Finance","skills":"Java, Spring Boot, REST APIs, microservice architectures, messaging or event-driven systems, software design principles, object-oriented programming, data structures, algorithms, source control, code reviews, CI/CD practices, SQL, relational databases, event-driven architectures (Kafka, MQ, or similar), cloud platforms, PCF/Tanzu, Kubernetes, or containerized workloads, distributed systems concepts, observability tools such as Splunk, Dynatrace, Grafana, or Prometheus, CI/CD pipelines and automated testing frameworks, PCI, security, or regulatory requirements, high-volume transaction processing systems","baseSalary":{"@type":"MonetaryAmount","currency":"USD","value":{"@type":"QuantitativeValue","minValue":92000,"maxValue":147000,"unitText":"YEAR"}}},{"@context":"https://schema.org","@type":"JobPosting","identifier":{"@type":"PropertyValue","name":"YubHub","value":"job_8aa21b87-d8f"},"title":"Senior Software Engineer","description":"<p>We are seeking an experienced Senior Software Engineer with strong expertise in Golang, cloud-native application development, and AWS-based solutions to support Mastercard&#39;s Cloud Connect initiatives.</p>\n<p>The role will focus on building secure, scalable connectivity platforms that enable customers to connect to Mastercard services from public cloud environments and private networks through modern cloud-native architectures.</p>\n<p>Responsibilities:</p>\n<ul>\n<li>Design, develop, and maintain secure, scalable, and resilient cloud-native applications and services using Golang and AWS technologies to support Mastercard&#39;s Cloud Connect initiatives.</li>\n<li>Collaborate cross-functionally with product, architecture, engineering, and operations teams to design scalable solutions, systems, APIs, and databases that meet functional and non-functional requirements.</li>\n<li>Contribute to software architecture, technical design reviews, and architectural decision-making, ensuring solutions are maintainable, performant, secure, and aligned with enterprise standards.</li>\n<li>Design and optimize data structures, algorithms, and processing patterns to support high-volume distributed systems and efficient resource utilization.</li>\n<li>Participate in the complete software development lifecycle, including requirements analysis, design, development, testing, deployment, monitoring, and ongoing support.</li>\n<li>Design, develop, and maintain automated unit, functional, and integration tests while promoting test-driven development practices.</li>\n<li>Conduct code reviews and provide technical mentorship to engineering team members, promoting coding standards, software quality, maintainability, and engineering best practices.</li>\n<li>Apply secure coding principles throughout the software development lifecycle, proactively identifying and remediating vulnerabilities through code reviews, security testing, and adherence to Mastercard security standards.</li>\n<li>Contribute to operational excellence by implementing observability, monitoring, logging, alerting, and reliability best practices for cloud-native services.</li>\n<li>Perform root cause analysis, troubleshoot complex production issues, and lead performance tuning efforts to improve system reliability, scalability, and efficiency.</li>\n<li>Work with business partners and stakeholders to understand business needs and translate requirements into technical solutions.</li>\n</ul>\n<p>Requirements:</p>\n<ul>\n<li>Bachelor&#39;s degree in Computer Science, Management Information Systems, Engineering, or related field.</li>\n<li>7+ years of software engineering experience designing, developing, and supporting enterprise applications.</li>\n<li>2+ years of hands-on experience developing applications using Go (Golang).</li>\n<li>Experience designing, deploying, and operating cloud-native solutions on AWS.</li>\n<li>Strong understanding of AWS networking services including VPC, Transit Gateway, PrivateLink, Route 53, Network Load Balancers, and Direct Connect.</li>\n<li>Experience building and operating containerized applications using Kubernetes, Amazon EKS, Docker, and related cloud-native technologies.</li>\n<li>Strong understanding of distributed systems concepts, scalability patterns, performance optimization, and efficient data structure design.</li>\n<li>Experience conducting code reviews and promoting engineering best practices, software quality, and secure coding standards.</li>\n<li>Knowledge of secure software development practices including authentication, authorization, encryption, secrets management, vulnerability remediation, and application security testing.</li>\n<li>Experience implementing and maintaining automated testing frameworks, including unit, functional, and integration testing.</li>\n<li>Experience with Test-Driven Development (TDD) methodologies.</li>\n<li>Experience with protocol buffers and gRPC.</li>\n<li>Experience with Python 3.8 or higher is preferred.</li>\n<li>Strong understanding of CI/CD pipelines and modern DevOps practices using Git, Jenkins, Artifactory, Docker Registry, and related technologies.</li>\n<li>Experience building and supporting applications on Linux platforms.</li>\n<li>Experience implementing observability and operational readiness practices including logging, monitoring, alerting, and incident response.</li>\n<li>Agile software delivery experience in a globally distributed engineering environment</li>\n</ul>\n<p>Benefits:</p>\n<ul>\n<li>Insurance (including medical, prescription drug, dental, vision, disability, life insurance)</li>\n<li>Flexible spending account and health savings account</li>\n<li>Paid leaves (including 16 weeks of new parent leave and up to 20 days of bereavement leave)</li>\n<li>80 hours of Paid Sick and Safe Time</li>\n<li>25 days of vacation time and 5 personal days, pro-rated based on date of hire</li>\n<li>10 annual paid U.S. observed holidays</li>\n<li>401k with a best-in-class company match</li>\n<li>Deferred compensation for eligible roles</li>\n<li>Fitness reimbursement or on-site fitness facilities</li>\n<li>Eligibility for tuition reimbursement</li>\n</ul>\n<p style=\"margin-top:24px;font-size:13px;color:#666;\">Job Data by <a href=\"https://yubhub.co\">YubHub</a>.</p>","url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Senior-Software-Engineer_R-292802","directApply":true,"hiringOrganization":{"@type":"Organization","name":"Mastercard","sameAs":"https://mastercard.com","logo":"https://logos.yubhub.co/mastercard.com.png"},"x-apply-url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Senior-Software-Engineer_R-292802","x-work-arrangement":null,"x-experience-level":"senior","x-job-type":"full-time","x-salary-range":"$115,000 - $184,000 USD","x-skills-required":["Golang","AWS","cloud-native application development","Kubernetes","Docker","Python","protocol buffers","gRPC","CI/CD pipelines","DevOps"],"x-skills-preferred":["Python 3.8 or 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Engineer with strong expertise in Golang, cloud-native application development, and AWS-based solutions. The role will focus on building secure, scalable connectivity platforms that enable customers to connect to Mastercard services from public cloud environments and private networks through modern cloud-native architectures.</p>\n<p><strong>Responsibilities:</strong></p>\n<ul>\n<li>Design, develop, and maintain secure, scalable, and resilient cloud-native applications and services using Golang and AWS technologies.</li>\n<li>Collaborate cross-functionally with product, architecture, engineering, and operations teams to design scalable solutions, systems, APIs, and databases.</li>\n<li>Contribute to software architecture, technical design reviews, and architectural decision-making.</li>\n<li>Design and optimize data structures, algorithms, and processing patterns to support high-volume distributed systems.</li>\n<li>Participate in the complete software development lifecycle, including requirements analysis, design, development, testing, deployment, monitoring, and ongoing support.</li>\n<li>Design, develop, and maintain automated unit, functional, and integration tests.</li>\n<li>Conduct code reviews and provide technical mentorship to engineering team members.</li>\n<li>Apply secure coding principles throughout the software development lifecycle.</li>\n<li>Contribute to operational excellence by implementing observability, monitoring, logging, alerting, and reliability best practices.</li>\n<li>Perform root cause analysis, troubleshoot complex production issues, and lead performance tuning efforts.</li>\n<li>Work with business partners and stakeholders to understand business needs and translate requirements into technical solutions.</li>\n</ul>\n<p><strong>Requirements:</strong></p>\n<ul>\n<li>Bachelor&#39;s degree in Computer Science, Management Information Systems, Engineering, or related field.</li>\n<li>7+ years of software engineering experience.</li>\n<li>2+ years of hands-on experience developing applications using Go (Golang).</li>\n<li>Experience designing, deploying, and operating cloud-native solutions on AWS.</li>\n<li>Strong understanding of AWS networking services, distributed systems concepts, scalability patterns, and efficient data structure design.</li>\n<li>Experience conducting code reviews and promoting engineering best practices.</li>\n<li>Knowledge of secure software development practices.</li>\n<li>Experience implementing and maintaining automated testing frameworks.</li>\n<li>Experience with Test-Driven Development (TDD) methodologies.</li>\n<li>Experience with protocol buffers and gRPC.</li>\n<li>Strong understanding of CI/CD pipelines and modern DevOps practices.</li>\n</ul>\n<p><strong>Benefits:</strong></p>\n<ul>\n<li>Competitive base salary</li>\n<li>Annual bonus or commissions</li>\n<li>Insurance (medical, prescription drug, dental, vision, disability, life insurance)</li>\n<li>Flexible spending account and health savings account</li>\n<li>Paid leaves (new parent leave, bereavement leave)</li>\n<li>Paid Sick and Safe Time</li>\n<li>Vacation time and personal days</li>\n<li>401k with company match</li>\n<li>Deferred compensation for eligible roles</li>\n<li>Fitness reimbursement or on-site fitness facilities</li>\n<li>Eligibility for tuition reimbursement</li>\n</ul>\n<p style=\"margin-top:24px;font-size:13px;color:#666;\">Job Data by <a href=\"https://yubhub.co\">YubHub</a>.</p>","url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Senior-Software-Engineer_R-292793","directApply":true,"hiringOrganization":{"@type":"Organization","name":"Mastercard","sameAs":"https://mastercard.com","logo":"https://logos.yubhub.co/mastercard.com.png"},"x-apply-url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Senior-Software-Engineer_R-292793","x-work-arrangement":null,"x-experience-level":"senior","x-job-type":"full-time","x-salary-range":"$115,000 - 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The successful candidate will provide technical leadership, drive large-scale initiatives, and ensure high-quality, secure, reliable, and automated software delivery aligned to business priorities.</p>\n<p>Key Responsibilities:</p>\n<ul>\n<li>Lead, coach, and develop a high-performing engineering team while actively contributing to technical solutions and engineering delivery</li>\n<li>Drive end-to-end delivery of complex integration and full-stack engineering initiatives through hands-on development, technical guidance, and collaboration with engineering teams</li>\n<li>Design, develop, and enhance scalable software solutions across cloud-based platforms, including integration and automation capabilities</li>\n<li>Manage configuration and integration of cloud-based applications across the enterprise</li>\n<li>Provide hands-on technical leadership in architecture and system design decisions</li>\n<li>Design, implement, and improve automation frameworks and testing solutions to increase efficiency, reliability, and software quality</li>\n<li>Drive automation throughout the software development lifecycle, including testing strategy, execution, validation, and continuous improvement</li>\n<li>Oversee execution of projects, balancing scope, timeline, quality, and technical excellence</li>\n<li>Ensure adherence to enterprise standards including secure coding, testing, automation, and operational best practices</li>\n</ul>\n<p>Required Skills:</p>\n<ul>\n<li>Strong software design and architecture experience (microservices, APIs, scalable systems)</li>\n<li>Strong Core Java experience</li>\n<li>Deep familiarity with test automation frameworks and modern automated testing practices</li>\n<li>Strong understanding of test strategy and design, including defining coverage, test cases, and quality metrics</li>\n<li>Strong understanding of automation architecture, including framework design, scalability, and maintainability</li>\n<li>End-to-end understanding of the testing lifecycle, from planning and design through execution, defect management, and release validation</li>\n<li>Exposure to AI concepts or tools, with the ability to understand and apply AI within a software testing or engineering context</li>\n<li>Deep knowledge of software development, testing, and performance engineering</li>\n<li>Experience with secure coding practices and code quality standards</li>\n<li>Strong troubleshooting and problem-solving skills</li>\n<li>Ability to design systems with operability, monitoring, reliability, and maintainability in mind</li>\n<li>Strong understanding of data structures, software engineering principles, and scalable application design</li>\n</ul>\n<p>Leadership &amp; Experience:</p>\n<ul>\n<li>Proven experience leading and mentoring software engineering teams while maintaining hands-on technical expertise</li>\n<li>Track record delivering large, complex technical solutions in agile environments</li>\n<li>Experience contributing to software 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href=\"https://yubhub.co\">YubHub</a>.</p>","url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Manager-Software-Engineering_R-292949","directApply":true,"hiringOrganization":{"@type":"Organization","name":"Mastercard","sameAs":"https://mastercard.com","logo":"https://logos.yubhub.co/mastercard.com.png"},"x-apply-url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Manager-Software-Engineering_R-292949","x-work-arrangement":null,"x-experience-level":"senior","x-job-type":"full-time","x-salary-range":"$140,000 - $231,000 USD","x-skills-required":["microservices","APIs","scalable systems","Core Java","test automation frameworks","automation architecture","software development","testing","performance engineering","secure coding practices","data structures","software engineering 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The base salary offered may vary depending on multiple factors, including but not limited to location, job-related knowledge, skills, and experience.</p>\n<p style=\"margin-top:24px;font-size:13px;color:#666;\">Job Data by <a href=\"https://yubhub.co\">YubHub</a>.</p>","url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Director--Technical-Program-Management_R-292366-1","directApply":true,"hiringOrganization":{"@type":"Organization","name":"Mastercard","sameAs":"https://www.mastercard.com","logo":"https://logos.yubhub.co/mastercard.com.png"},"x-apply-url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Director--Technical-Program-Management_R-292366-1","x-work-arrangement":null,"x-experience-level":"senior","x-job-type":"full-time","x-salary-range":"$152,000 - $258,000 USD","x-skills-required":["Technical Program Management","Financial Planning","Leadership","Communication","Project 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engineering design reviews.</li>\n</ul>\n<p>Required Qualifications:</p>\n<ul>\n<li>5–8+ years of experience in DevOps, platform engineering, cloud engineering, or infrastructure automation roles.</li>\n<li>Strong hands-on experience with Terraform, Ansible or Chef.</li>\n<li>Solid understanding of cloud platforms (AWS, Azure, or GCP) and on prem infrastructure (VMware, Linux, networking fundamentals).</li>\n<li>Experience building and maintaining CI/CD pipelines using GitHub Actions, GitLab, Jenkins, or Azure DevOps.</li>\n<li>Strong scripting or programming skills (Python, Go, or similar).</li>\n<li>Experience with configuration management, secrets management, and artifact repositories.</li>\n<li>Familiarity with GitOps workflows and declarative infrastructure patterns.</li>\n<li>Strong troubleshooting skills across infrastructure, automation, and platform layers.</li>\n</ul>\n<p>Mastercard benefits for full time employees generally include: insurance, flexible spending account and 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href=\"https://yubhub.co\">YubHub</a>.</p>","url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Director--Platform-Engineering_R-293264","directApply":true,"hiringOrganization":{"@type":"Organization","name":"Mastercard","sameAs":"https://www.mastercard.com","logo":"https://logos.yubhub.co/mastercard.com.png"},"x-apply-url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Director--Platform-Engineering_R-293264","x-work-arrangement":null,"x-experience-level":"senior","x-job-type":"full-time","x-salary-range":"$152,000 - $258,000 USD","x-skills-required":["Terraform","Ansible","Chef","Python","Go","CI/CD pipelines","Cloud platforms","Infrastructure automation"],"x-skills-preferred":["Experience developing or extending Terraform modules or custom providers","Experience with Ansible Collections, dynamic inventories, or Ansible Tower/Ansible Automation Platform","Experience with policy as code tools (OPA and 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practices that improve software quality and engineering outcomes.</li>\n</ul>\n<p>Requirements:</p>\n<ul>\n<li>3+ years of hands-on Java development experience building, testing, deploying, and supporting enterprise applications.</li>\n<li>Experience developing and maintaining automated test frameworks and test suites, including hands-on experience with Selenium.</li>\n<li>Understanding of software engineering fundamentals, object-oriented design, common design patterns, and the software development lifecycle (SDLC).</li>\n<li>Experience with CI/CD pipelines, source control, automation, and modern software delivery practices.</li>\n<li>Experience creating and executing unit, integration, regression, and end-to-end tests to ensure software quality and reliability.</li>\n<li>Familiarity with gRPC or similar API technologies and service-to-service integrations.</li>\n<li>Strong troubleshooting, debugging, and root-cause analysis skills, with experience diagnosing issues across distributed 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commissions</li>\n<li>Insurance (medical, prescription drug, dental, vision, disability, life insurance)</li>\n<li>Flexible spending account and health savings account</li>\n<li>Paid leaves (new parent leave, bereavement leave)</li>\n<li>Paid Sick and Safe Time</li>\n<li>Vacation time and personal days</li>\n<li>401k with company match</li>\n<li>Deferred compensation for eligible roles</li>\n<li>Fitness reimbursement or on-site fitness facilities</li>\n<li>Eligibility for tuition reimbursement</li>\n</ul>\n<p style=\"margin-top:24px;font-size:13px;color:#666;\">Job Data by <a 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The Global Product Engineering team builds foundational payment solutions that are secure, resilient, scalable, and operationally reliable.</p>\n<p>As a Senior Software Engineer, you will contribute to the design, development, validation, automation, and operability of high-quality software solutions. 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logging, monitoring, troubleshooting, incident analysis, root cause analysis, and problem resolution.</li>\n<li>Participate in defect triage, release readiness reviews, environment validation, and risk assessment across delivery cycles.</li>\n<li>Evaluate emerging tools, frameworks, and engineering practices; support Proof of Concept efforts and continuous improvement initiatives.</li>\n<li>Contribute to solution and technology roadmaps by providing inputs on automation, quality engineering, observability, performance, and operability improvements.</li>\n<li>Work in an Agile environment, actively participating in sprint planning, daily stand-ups, demos, retrospectives, and release planning.</li>\n</ul>\n<p>The ideal candidate will have hands-on software engineering experience with strong technical depth across development, automation, testing, and delivery practices.</p>\n<p>Required Skills and Experience:</p>\n<ul>\n<li>6–9 years of software engineering experience with strong hands-on 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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.</p>\n<p style=\"margin-top:24px;font-size:13px;color:#666;\">Job Data by <a href=\"https://yubhub.co\">YubHub</a>.</p>","url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Senior-Software-Engineer_R-281539","directApply":true,"hiringOrganization":{"@type":"Organization","name":"Mastercard","sameAs":"https://www.mastercard.com","logo":"https://logos.yubhub.co/mastercard.com.png"},"x-apply-url":"https://mastercard.wd1.myworkdayjobs.com/en-US/CorporateCareers/job/OFallon-Missouri/Senior-Software-Engineer_R-281539","x-work-arrangement":null,"x-experience-level":"senior","x-job-type":"full-time","x-salary-range":"$115,000 - $184,000 USD","x-skills-required":["Java","Spring","JUnit","Rest 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testing</li>\n<li>Ensure high code quality and coverage using tools such as Sonar or Clover</li>\n</ul>\n<p><strong>Security &amp; Compliance</strong></p>\n<ul>\n<li>Apply and promote secure coding practices, including code analysis, vulnerability detection, and mitigation strategies</li>\n<li>Integrate security testing into CI/CD pipelines</li>\n</ul>\n<p><strong>Code Quality &amp; Reviews</strong></p>\n<ul>\n<li>Conduct and lead code reviews, ensuring adherence to coding standards, security practices, and maintainability</li>\n<li>Act as a technical reviewer for system designs, test strategies, and implementation approaches</li>\n</ul>\n<p><strong>Operability &amp; Performance</strong></p>\n<ul>\n<li>Ensure systems are observable, monitorable, and resilient across environments</li>\n<li>Perform performance engineering, including load testing, tuning, and bottleneck analysis</li>\n<li>Troubleshoot complex production issues and ensure rapid resolution</li>\n</ul>\n<p><strong>Collaboration &amp; Leadership</strong></p>\n<ul>\n<li>Partner with developers, architects, and product teams to drive engineering best practices</li>\n<li>Mentor junior engineers and contribute to knowledge sharing across teams</li>\n<li>Evaluate and recommend tools, technologies, and frameworks for continuous improvement</li>\n</ul>\n<p><strong>Requirements</strong></p>\n<ul>\n<li>Experience building applications and REST APIs using Java, Spring Boot, and Spring Data JPA</li>\n<li>Strong foundation in computer science fundamentals, including data structures, algorithms, and object-oriented design</li>\n<li>Ability to write clean, secure, testable code and contribute to unit, service, and integration testing</li>\n<li>Comfort working with SQL and relational data concepts</li>\n<li>Strong analytical and problem-solving skills, with the ability to debug issues and identify practical solutions</li>\n<li>Strong verbal and written communication skills and 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