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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - **Company:** Mastercard - **Location:** Salt Lake City, UT, United States - **Experience:** Expert - **Salary:** $115,000.0 - $184,000.0 - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Acceptance Test-Driven Development, HTML5, Build Automation, Microsoft Azure, Cascading Style Sheets (CSS), Code Generation, Software Quality, Databases, Computer Engineering, Cursor (Graphical User Interface Elements), Software Debugging, Dependency Injection, Software Design Patterns, Financial Software, PostgreSQL, Model View Controller (MVC), Node.Js, Open Web Application Security, Responsive Web Design, Secure Coding, Software Engineering, SONAR (Symantec), Software Vulnerability Management, RxJS, Cloud Platform System, GitHub Copilot, ReactJS, System Availability, Spring-boot, SOAPAPI, Backend, Gitlab, Containerization, Git Flow, Information Technology, Front End Software Development, Checkmarx, Api Gateway, Restful APIs, Heap (Data Structure), Pyramid, Code Restructuring, Atlassian Bamboo, Docker, Service Stack, Jenkins, Microservices - **Published:** July 14, 2026 - **Apply:** https://www.juju.com/job/00000000gglxdu ## About the Role * 5+ years of software engineering experience across backend and frontend development. * Strong hands-on experience in backend development with applicable JAVA technologies (Core JAVA, Spring Integration, Spring Boot, REST/SOAP web services) * Solid experience building RESTful APIs, microservices, and working in cloud environments (AWS, GCP, or Azure). * Has ability to write secure code in JavaScript and Node.js * A deep understanding of methodologies and design patterns for JavaScript, HTML5, complex CSS and responsive design * Strong hands-on experience in developing front end applications in React and frameworks RxJS * Proven experience working with SQL Databases (preferable PostgreSQL). * Experience in AI coding assistants tools like GitHub Copilot, Cursor, Claude Code, or Codex for code generation, refactoring, and debugging. * Experience in AI prompt engineering to design, test, and refine prompts to improve the quality, accuracy, and relevance of AI-generated code. * Experience with containerized applications (Docker and Kubernetes) * Familiar with secure coding standards (e.g., OWASP, CWE, SEI CERT) and vulnerability management * Able to perform debugging and troubleshooting to analyze core, heap, thread dumps and remove coding errors * Understands and implements standard branching (e.g., Gitflow) and peer review practices * Has skills in test driven and behavior driven development (TDD and BDD) to build just enough code and collaborate on the desired functionality * Understands use cases for advanced design patterns (e.g., service-to-worker, MVC, API gateway, intercepting filter, dependency injection, lazy loading, all from the gang of four) to implement efficient code * Understands and implements Application Programming Interface (API) standards and cataloging to drive API/service adoption and commercialization * Has skills to author test code with lots of smaller tests followed by few contract tests at service level and fewer journey tests at the integration level (Test Pyramid concept) * Apply tools (e.g., Sonar, Zally, Checkmarx ) and techniques to scan and measure code quality and anti-patterns as part of development activity * Has skills to collaborate with team and business stakeholders to estimate requirements (e.g., story pointing) and prioritize based on business value * Has skills to elaborate and estimate non-functional requirements, including security (e.g., data protection, authentication, authorization), regulatory, and performance (SLAs, throughput, transactions per second) * Has skills to orchestrate release workflows and pipelines, and apply standardized pipelines via APIs to achieve CI and CD using industry standard tools (e.g., Gitlab, Jenkins, AWS/Azure pipelines, others). * Has skills to understand, report, and optimize delivery metrics to continuously improve upon them (e.g., velocity, throughput, lead time, defect leakage, burndown) * Has skills to document and drive definition-of-done for requirements to meet both business and operational needs * Understands how to build robust tests to minimize defect leakage by performing regression, performance, deployment verification, and release testing * Has skills to conduct product demos and co-ordinate with product owners to drive product acceptance signoffs * Has skills to Understands customer journeys and ensure a Mastercard good experience by continuously reducing Mean time to mitigate (MTTM) for incidents and ensuring high availability (99.95% as a starting point) Education * Bachelor's Degree in Computer Science or Computer Engineering or Information Technology, or relevant experience in software development ## Description _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._, As a Senior Full-Stack Engineer, you will design, build, and deliver cutting-edge Open Finance solutions that power Mastercard's next generation of data products. You'll work across the entire technology stack-from highly available backend services built in Java to engaging front-end experiences using React-partnering closely with designers, product managers, and architects to bring ideas to life. You will contribute to Connect, the frontend component of our Open Finance applications, helping to drive innovative solutions in pursuit of a world beyond cash. This role requires strong backend engineering expertise (Java), robust frontend development skills (React), and the ability to collaborate across disciplines to deliver secure, scalable, and accessible software aligned to Mastercard's highest standards. Responsibilities * Participate in team prioritization discussions with Product/Business stakeholders * Estimate and own delivery tasks (design, dev, test, deployment, configuration, documentation) to meet the business requirements * Automate build, operate, and run aspects of software * Drive code/design/process trade-off discussions within their team when required * Report status and manage risks within their primary application/service * Drive integration of services focusing on customer journey and experience * Perform demos/acceptance discussions in interacting with Product owners * Understands operational and engineering experience, actively works to improve experience and metrics in ownership area * Develop complete understanding of end-to-end technical architecture and dependency systems * Drive adoption of technology standards and opinionated frameworks, and review coding, test, and automation work of team members * Mentor and guide new and less-experienced team members * Identify opportunities to improve an overall process and trim waste * Share and seek knowledge within their Guild/Program to drive reuse of patterns/libraries/practices and enhance productivity ## Related Videos - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [How to Create New RxJS Operators](https://www.wearedevelopers.com/videos/683-how-to-create-new-rxjs-operators) - [You’re a great coder? 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