Web Developer jobs in Canada

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

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.

Mastercard Security Solutions develops and delivers world-class risk, security products, and services for Mastercard customers across the globe. As part of this organization, the Strategic Data Acquisitions team is responsible for providing risk analytics data and insights to Mastercard and its worldwide customers. Maintenance of existing and development of new risk solutions and monitoring data-driven products/services.

The RiskRecon team is looking for a Senior Software Engineer to lead and help a team in designing, developing, and delivering risk assessment software solutions with a high level of innovation as well as integrations in support of Mastercard and its customers. The challenge is to create a high-performing platform, compelling visualizations, and intuitive workflows that allow users to derive insights and in turn protect their assets.

1. Design, develop, and maintain high-performance, scalable, and reusable code.
2. Enhance existing solutions and build new full-stack applications that drive business value.
3. Own the full software development lifecycle—from gathering requirements and designing solutions to implementation, testing, deployment, and maintenance.
4. Create high-quality technical documentation, including requirements specifications, use cases, test strategies, performance benchmarks, deployment plans, and feasibility studies.
5. Troubleshoot and resolve production issues, ensuring system stability and reliability.
6. Collaborate closely with Quality Assurance engineers to ensure comprehensive test coverage, including unit, integration, system, and performance testing.
7. Continuously seek opportunities to improve system performance, security, and user experience.

1. Strong Python experience with the ability to quickly learn new programming languages.
2. Familiarity with Elixir, React/JavaScript, HTML, CSS, AWS, and Terraform is a plus.
3. Hands-on experience with Docker and containerized applications.
4. Knowledge of databases and technologies like PostgreSQL, MongoDB, Elasticsearch, Kubernetes, and Kafka.
5. Strong grasp of software engineering principles and agile methodologies.
6. Experience developing large-scale, secure web applications in a fast-paced environment.
7. Excellent communication skills and a proactive, problem-solving mindset.
8. Bachelor’s degree in Computer Science or equivalent experience.

All activities involving access to Mastercard assets, information, and networks come 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;
• Complete all periodic mandatory security trainings in accordance with Mastercard’s guidelines.