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Full Time
9/3/2025
Toronto, ON M4W3E2
(36.8 miles)
Our PurposeMastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build asustainableeconomy where everyone can prosper. We support a wide range of digital payments choices, making transactionssecure, 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 SummaryLead Software EngineerWho is Mastercard We work 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. We cultivate a culture of inclusion for all employees that respects their individual strengths, views, and experiences. We believe that our differences enable us to be a better team –one that makes better decisions, drives innovation, and delivers better business results. OverviewServices within Mastercard is responsible for acquiring, engaging, and retaining customers by managing fraud and risk, enhancing cybersecurity, and improving the digital payments experience. We provide value-added services and leverage expertise, data-driven insights, and execution.Supporting the Mastercard Cyber and Security Services program, members of this team have an opportunity to build new and extend current fraud prevention and cyber security services. This exciting area within Mastercard is growing fast and creating cutting edge technologies that prevent fraud across the globe. This is an agile team that will be balanced across full stack engineering and data engineering. The team will also provide leadership for other teams in using strong architecture and technology delivery practices that create the best solutions. The Lead Software Engineer will play a critical role in creating new products and new functionality. Role • Designing and delivering detailed solutions to complex technical challenges, while helping your team understand and follow the path forward. • Providing technical subject matter expertise and strategic technical direction on your assigned projects. • Looking for ways to automate and improve the entire lifecycle: build, operate, and run processes for enhanced efficiency. • Leading the integration of services with a strong focus on optimizing customer experience and journey. • Continuously expanding your technical knowledge - always striving to improve and innovate within our systems. • Leading technical demos, guiding discussions with Product Owners, and championing the adoption of best practices. • Reviewing code, test automation, and other engineering deliverables to ensure they meet high standards. • Mentoring and providing technical guidance to junior engineers, helping them grow in their careers. • Contributing to development with a mix of Java, JavaScript, Python, SQL, and Spark. All About You • Advanced expertise in Java with Spring Boot development, including design patterns, performance optimization and troubleshooting.• Solid experience designing and developing RESTful services. • Experience with data analysis and problem-solving in technical environments. • Detail-oriented, and proactive with a knack for thriving under pressure in collaborative, Agile settings. • Self-motivated with a continuous learning mindset and a drive to take on new challenges. • Strong verbal and written communication skills, with an ability to foster relationships and work effectively within a team. • Proficient in SQL and confident using it for complex data challenges. • Familiarity with cloud technologies, such as AWS and Pivotal Cloud Foundry is an asset.• Exposure to Hadoop, Spark, Hive is an asset. • Experience with frameworks like Angular or React is an asset.#securitysolutionsMastercard 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 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 ResponsibilityAll 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, andComplete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.
Full Time
9/9/2025
Toronto, ON M4W3E2
(36.8 miles)
Our PurposeMastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build asustainableeconomy where everyone can prosper. We support a wide range of digital payments choices, making transactionssecure, 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 SummarySenior Software EngineerOverview:Mastercard is seeking a Senior Software Engineer to join our Security and Cyber Solutions team. In this role, you will design and implement scalable data engineering solutions on the Databricks platform while working closely with internal users across different locations.The ideal candidate will have expert knowledge of software development processes, along with solid experience in testing and evaluating systems. This person should be highly motivated in finding technical issues and fixing them with meticulous code.This is a hybrid position based in Toronto, Canada, requiring three days per week onsite. Role:• Develop tools and frameworks to automate the development, testing, deployment, and operation of services.• Design and scale distributed applications using both synchronous and asynchronous patterns.• Build reliable, efficient ETL pipelines and APIs for secure data access and analytics.• Collaborate with global teams to evaluate and improve engineering efficiency, performance, and scalability.• Monitor and maintain system functionality, identifying areas of improvement and proactively addressing issues.• Partner with Product Managers and UX Designers to shape and deliver future product features and capabilities.• Ensure high standards of software quality through best practices in code quality, testing, and documentation. All About You:• Proven track record as a Software Engineer or Developer in Agile environments, with the ability to lead technical initiatives end-to-end.• Extensive hands-on experience with Python for building robust, scalable applications.• Strong expertise with Databricks for developing, optimizing, and deploying large-scale data analytics and machine learning solutions.• Prior experience with Elixir, React/JavaScript, HTML, and CSS for full-stack development.• Proficiency in AWS, Terraform, and SQL, with practical experience deploying and managing cloud-based infrastructure.• Experience designing and maintaining scalable ETL pipelines, integrating RESTful APIs, and leveraging big data frameworks such as Apache Spark and Hadoop.• Familiarity with containerization and orchestration technologies such as Docker (Kubernetes a plus).• Strong understanding of the software development lifecycle, networking, and system design principles.• Skilled in scripting and test automation, enabling efficient CI/CD in cloud environments.• Ability to produce clear, comprehensive documentation for development, testing, analytics, and support processes.• Exceptional problem-solving skills and proven ability to collaborate with distributed, cross-functional teams.• Excellent verbal and written communication skills, with the ability to convey complex technical concepts to both technical and non-technical audiences.• Bachelor’s degree in Computer Science, Engineering, or a related field; equivalent professional experience will be considered. #LI-NF1#SecuritySolutionsMastercard 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 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 ResponsibilityAll 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, andComplete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.
Full Time
9/3/2025
Toronto, ON M4W3E2
(36.8 miles)
Our PurposeMastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we’re helping build asustainableeconomy where everyone can prosper. We support a wide range of digital payments choices, making transactionssecure, 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 SummaryLead Software Engineer-(Python Expertise)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’s RiskRecon team is looking for a Lead Software Engineer to drive the design, development, and delivery of cutting-edge risk assessment software solutions. In this role, you will lead a team in building high-performance platforms, intuitive workflows, and compelling visualizations that empower users to gain insights and protect their assets. Your contributions will support Mastercard and its customers by ensuring secure, scalable, and innovative technology solutions. Role:• Design, develop, document, and test software components and subsystems, ensuring maintainability and version control best practices.• Interpret technical specifications to create scalable, future-ready designs and contribute to project planning.• Conduct functional and performance testing, enhance existing solutions, and build new full-stack applications.• Drive the end-to-end software development lifecycle, including requirements gathering, design, implementation, testing, and deployment.• Work closely with cross-functional teams, provide task estimations, and share expertise in emerging technologies and best practices.• Lead and mentor a team of software engineers, fostering innovation, maintaining high-quality standards, and ensuring smooth development processes. All About You:• Proficiency in Full-Stack Development with extensive experience in both front-end (React, JavaScript, HTML, CSS) and back-end (Python, Node.js, Java, or Elixir) technologies, including API design, database management, and system integration.• Experience with AWS and cloud technologies, Docker, Kubernetes, and modern data stores (PostgreSQL, MongoDB, Elasticsearch, Kafka).• Familiarity with best practices in software development, including TDD/BDD, unit testing, CI/CD, and Agile methodologies.• Solutions-oriented mindset with the ability to identify and implement the best-fit technologies to meet business needs.• Proven experience in developing large-scale, secure web applications with a focus on performance and scalability.• Strong communication and leadership skills, with the ability to collaborate in a dynamic, fast-paced environment.• Demonstrated ability to thrive in an entrepreneurial setting while embodying Mastercard’s core values: trust, partnership, initiative, and agility.• Bachelor’s degree in computer science, Software Engineering, or a related technical field, or equivalent practical experience.#LI-FT1#SecuritySolutionsMastercard 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 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 ResponsibilityAll 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, andComplete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.
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