• Implement new features, enhancements, and bug fixes across the integration platform — owning your work items from design through production under the technical direction of the Principal Engineer. • Write clean, maintainable, production-quality code across the integration stack — C#/.NET, Oracle SQL/PL/SQL, REST API services, file processing pipelines, and background job logic. • Build and maintain file-based integration logic — CSV and fixed-width parsing, PGP encryption/decryption, SFTP file transfer, archive management, and broker-specific file format handling. • Implement and maintain REST API endpoints and background processing pipelines under the architectural direction of the Principal Engineer. • Make database changes to support integration tasks — including schema updates, stored procedures, and SQL query development and optimization. • Participate actively in agile ceremonies — sprint planning, refinement, standups, demos, and retrospectives. • Leverage AI tooling actively throughout feature development — from accelerating implementation and debugging to generating tests and documentation.

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 Foundry R&D Software Engineer II Who is Mastercard? Mastercard is a global technology company in the payments industry. Our mission is to connect and power an inclusive, digital economy that benefits everyone, everywhere by making transactions safe, simple, smart, and accessible. Using secure data and networks, partnerships and passion, our innovations and solutions help individuals, financial institutions, governments, and businesses realize their greatest potential. Our decency quotient, or DQ, drives our culture and everything we do inside and outside of our company. With connections across more than 210 countries and territories, we are building a sustainable world that unlocks priceless possibilities for all. Overview Mastercard is looking for a talented Software Engineer to join the Mastercard Foundry Research and Development team in our Dublin Tech Hub. In this role you will be part of a highly agile team building exiting and innovative products delivered at scale to global markets. Our team is built on a foundation of research and development, mining innovation internally, innovating new product lines with emerging technology, managing new products from inception to market validation and engaging strategically with start-ups to shape the future of commerce with and for our customers. At Mastercard you will help define the future of commerce globally. This team will have a diverse focus both in terms of geography and variety of technology challenges driving hard to bring innovative payment solutions to market. Role This role involves working with a team of talented developers to develop high performance Java based solutions. In this role, you will be responsible for: • Design and implementation of innovative capabilities using AI Tooling. • Work as part of an agile team. • Work closely with technical leads and other developers to define solutions. • Research alternative technical solutions to meet changing business needs. • Produce design and research documentation. • Transitioning R&D solutions to Mastercard core. Skills • Proficiency with Java JDK 17 or greater. • Knowledge of Tomcat, Spring, Spring Boot, Shell Scripting, JSON. • Experience with Docker, Kubernetes or other container orchestration solutions. • Expertise in Junit or other automated unit testing frameworks. • Experience with a UI framework such as React. • Knowledge of CI/CD principles and tools such as Jenkins, Gradle, Maven. • Passionate about software development and comfortable in a fluid environment. • Knowledge of Source Control Management and working with code in a multi-developer environment. • Knowledge of or passion for mobile application development would also be an advantage • Demonstrates hands-on knowledge of agents, skills, MCP integration, and practical AI workflow concepts. Other • Excellent communication (verbal and written) and strong collaboration skills. • Show initiative and demonstrate a willingness to take on challenging opportunities. • Passionate about code quality and coding best practices. • Highly motivated and a strong team-player. 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.

• Build and own shared libraries that engineers across the company depend on for data access, messaging, service communication, observability, and resilience • Design APIs that get adopted — your interfaces need to be good enough that teams choose them over building their own; that means thoughtful defaults, clean abstractions, backward compatibility, and strong documentation • Build multi-cloud abstractions that let services run across cloud providers and on-premise environments without vendor-specific code • Design and implement resilience patterns — retries, circuit breakers, load shedding, graceful degradation — as reusable primitives that become the default for every service • Build platform capabilities — feature management, traffic control, disaster recovery, and sharding as composable libraries • Own the security posture of shared dependencies — keep foundational libraries current, remediate vulnerabilities, and ship secure defaults • Participate in architectural governance — propose, review, and shepherd RFCs that set direction for the services ecosystem • Advocate and consult — be a trusted advisor to engineering teams adopting shared libraries; help them make the right architectural choices, unblock integration challenges, and feed their needs back into the platform • Partner with Data Services, Infrastructure, SRE, and Observability — your libraries sit on top of their platforms; build strong working relationships that keep shared libraries aligned with operational reality • Operate what you build — on-call rotations, production triage, and using operational insight to make the libraries better

Title: Software Developer / UI Developer Location: Toronto, ON, CA Hybrid Job Description: Job#: 3036581 Job Description: Possibility of Extension?: very likely as long as candidate can deliver Possibility of FTE?: possible Physical Working Location (required): Is this role remote?: Hybrid, 2 days a week in downtown Toronto [Monday and floating day] Hours of Operation: 9 - 5 UI Developer (Angular & React) We're hiring a UI Developer to design and build intuitive, responsive, high-performing web interfaces using both Angular and React. You'll partner with UX, product, and backend teams to deliver seamless user experiences. What you'll do - Build responsive web interfaces with Angular and React. - Translate UX designs into clean, maintainable, reusable UI components. - Ensure accessibility, performance, and cross-browser compatibility. - Integrate UIs with RESTful APIs. - Write unit tests, participate in code reviews, and troubleshoot UI issues. What you bring (required) - 7+ years of front-end/web development experience. - Professional experience delivering production applications with React 19 and Angular 21+. - Strong skills in HTML5, CSS3, JavaScript (ES6+), and TypeScript. - State management experience (e.g., Redux, NgRx, Context API). - Modern build/tooling experience (e.g., Webpack, Vite). - Unit testing experience (e.g., Jasmine, Jest). - Experience with Angular Material. Nice to have - OpenFin experience (asset). - CI/CD familiarity. - CSS frameworks (Bootstrap, Tailwind). - Performance optimization experience. - Exposure to lightweight JS frameworks (e.g., Mithril.js). Education Bachelor's degree in CS (or related) or equivalent practical experience Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Everforth Apex Benefits Overview: In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Pay Range: $70 - $80 per hour