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Added 8 mins ago
Senior Systems MTS, Synthetic Aperture Radar (SAR) Missions for Fastwater Staffing and Recruiting
HIKINEX
Remote, Canada
Contract · Remote
Lead technical solutions for mission enhancements: beam mode design, mission concept design, image quality modelling
Added 8 mins ago
Senior Software Engineer in Test, UI Platform
Okta
Toronto, ON
Okta is seeking an experienced Senior Software Engineer in Test for our UI Engineering team. As a senior member of product quality engineering, you will own the test framework and quality…
Added 8 mins ago
Staff Systems Engineer, Signal Processing/SAR Processor for Fastwater Staffing and Recruiting
HIKINEX
Remote, Canada
Contract · Remote
Lead the definition, specification, technical risk management, integration, verification and validation of SAR processors, new and existing
Added 8 mins ago
Staff Systems Engineer, SAR Missions for Fastwater Staffing and Recruiting
HIKINEX
Remote, Canada
Contract · Remote
Lead technical solutions for current and future SAR missions: beam mode design, mission concept design, SAR image quality modelling
Added 8 mins ago
Senior Director, Global Partner Marketing
Okta
Toronto, ON
As the Senior Director of Partner Product Marketing and Alliances, you will lead the global strategy and execution for all product marketing functions related to partners and drive joint…
Added 21 mins ago
Associate Director, Information Security
Algonquin College of Applied Arts and Technology
Ottawa, ON
$119,680 to $159,570 CAD / year
Full-time
There has never been a more important time to lead information security in higher education. As technology continues to transform how we teach, learn, work, and connect, the cybersecurity…
Added 21 mins ago
Senior Designer, Women's Knitwear & Seamless
lululemon
Vancouver, BC
Full-time
…running, training, and other athletic pursuits. Setting the bar in technical fabrics and functional design, we create transformational products and experiences that support people in…
Added 21 mins ago
Sales Development (SDR) Manager
Quadient
Markham, ON
$90,000 to $130,000 CAD / year
Full-time
…skills and make a real impact – help our future-focused business lead the way in powering secure and sustainable business connections through digital and physical…
Added 21 mins ago
Senior Software Engineer in Test, UI Platform
Okta
Toronto, ON
$118,000 to $162,000 CAD / year
Full-time
Okta is seeking an experienced Senior Software Engineer in Test for our UI Engineering team. As a senior member of product quality engineering, you will own the test framework and quality…
Added 22 mins ago
Vice President, Strategy & Innovation
Munich Re
Toronto, ON
…excellence in the market. Our constantly evolving offerings lead the market in cyber, equipment breakdown, renewable energy, technology services, engineering based risk management and…
Added 22 mins ago
High Voltage Field Service Technologist
Spark Power
Calgary, AB
Full-time
Accept technical advice or guidance from senior team members with regards to processes and procedures.
Added 22 mins ago
Senior Manager, Product Services Group and Investment Funds
Scotiabank
Toronto, ON
Lead delivery of complex assignments and projects, exercise judgement and identify solutions to provide recommendations to business partners and senior management.
Added 22 mins ago
Senior Controls Designer
Haag, a Salas O'Brien Company
Canada
Full-time
As a Senior Controls Designer, you will lead the design, coordination, and documentation of sophisticated building automation and control systems for large-scale mission-critical…
Added 22 mins ago
Account Executive - Small Store
CONA Services
ON · Halifax, ON
Drive profitable sales growth by understanding customer and channel dynamics, building trusted relationships with senior customer leadership, and identifying strategic growth opportunities.
Added 22 mins ago
Account Executive - Small Store
CONA Services
ON · Halifax, ON
Drive profitable sales growth by understanding customer and channel dynamics, building trusted relationships with senior customer leadership, and identifying strategic growth opportunities.
Added 38 mins ago
Digital Consulting Associate, Oracle Cloud ERP
Huron
Toronto, ON
Full-time
Collaborate with senior team members to learn best practices and build technical/functional expertise.
Added 38 mins ago
Senior Specialist, Configuration Management Projects
L3Harris Technologies
Toronto, ON · ON · Waterdown, ON
Senior Specialist, Configuration Management Projects (L4)
Added 38 mins ago
Junior Business Advisor, Data & Analytics
Vancouver Coastal Health
Vancouver, BC
$35.37 to $50.85 CAD / hour
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Collaborate with senior advisors/analysts and other team members to maintain data quality, work on creating and maintaining reports, assist with data analysis, creation of presentations and…
Added 38 mins ago
Chief Project Officer, and Executive Director, Capital Planning and Projects
Vancouver Coastal Health
North Vancouver, BC
$89.06 to $133.59 CAD / hour
Full-time
Lead transformational delivery: Oversee planning, procurement, design, construction, and commissioning of major hospital redevelopments.
Added 38 mins ago
Development Manager - EA Sports FC
Electronic Arts
Vancouver, BC
…dependencies, staffing needs, and decisions. Working with creative, technical, production, and quality leaders, you will help the Gameplay organization deliver a responsive, authentic, and…
Added 38 mins ago
Enterprise Account Executive, Life Sciences
Litmus
Remote, Canada
Full-time · Remote
· Prospect into and build relationships with senior stakeholders across Manufacturing and Operations, Digital/Industry 4.0, OT/Automation, Quality and IT.
Added 52 mins ago
Senior Data Engineer
AgileGrid Solutions
Canada
Full-time
…closely with business stakeholders, data scientists, and other technical teams to design, develop, and implement scalable data solutions. Your expertise will help translate complex business…
Added 52 mins ago
Technical Lead- Salesforce
Bench
Toronto, ON
Full-time
Senior Salesforce Technical Lead – Financial Services Implementation
Added 52 mins ago
Senior Java Architect
Confiar Services
Toronto, ON
$105 to $110 CAD / hour
Contract
We are looking for a Senior Java Architect with strong experience in Java, Spring Boot, Microservices, REST APIs, and Microsoft Azure to design and lead scalable, secure, cloud-native…
Added 52 mins ago
Cyber Security Architect
Michael Page
Toronto, ON · Greater Toronto Area, Canada
$115,000 to $125,000 CAD / year
Full-time
Contribute to incident response as a senior technical escalation point, and translate lessons learned into architectural improvements.

Mastercard

Senior Principal Software Engineer, R&D

Toronto, ON, Canada

Job type: Full-time
Posting language: English
Posted: Sep 28, 2026

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Original job description

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

Senior Principal Software Engineer, R&DOverview

Mastercard is looking for a Senior Principal Software Development Engineer to join the Mastercard Foundry Research and Development team in our Toronto location. In this role, you will establish the technical direction for complex, early-stage products, drive architecture decisions across teams, and bring innovative solutions to global markets at enterprise scale. The Senior Principal Software Engineer thrives on setting direction where product concepts are ambiguous, aligning engineering choices to commercial outcomes.
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 and services to market.

As a Senior Principal Software Engineer on the R&D team, you will be at the forefront of the design of complex, large-scale new product concepts spanning Mastercard’s business units.

Responsibilities of the role include:

• Define highly scalable solution architectures for complex, early-stage product concepts across technology stacks, data platforms, and environments
• Establish engineering best practices that accelerate responsible use of AI across solution architecture and software delivery, including patterns for AI-assisted development, evaluation, observability, and production readiness
• Set technical direction for complex applications, interfaces, and integrations from concept through implementation, deployment, and release
• Set technical strategy and lead architecture implementation for Data Platforms in Foundry R&D, creating reusable patterns that can scale across products
• Influence technical direction across R&D, product, and technology teams, creating alignment on tradeoffs, delivery risks, and long-term platform choices
• Identify high-impact technical risks, make architecture decisions under uncertainty, and design experiments or prototypes to de-risk product concepts before market validation
• Act as a force multiplier for engineering excellence by coaching senior engineers, reviewing critical designs, raising quality standards, and creating technical practices that improve delivery
across teams

All About You
• Hands-on experience architecting and building 0-to-1 applications using Generative AI, LLMs, or agentic patterns
• Demonstrated ability to set technical strategy for complex initiatives, make architecture decisions under uncertainty, and influence senior technical and business stakeholders without direct authority
• Deep experience with one or more modern AI frameworks and SDKs for agent orchestration, AI application development, or coding-agent workflows, such as LangGraph, OpenAI Agents SDK, or Codex SDK
• Expertise in cloud platforms such as Databricks, Snowflake, AWS, and Azure
• Strong working knowledge of AI/ML, data analytics, and data product development with emphasis on data quality, data privacy, and localization
• Proven track record creating reusable architecture patterns, platforms, or engineering practices that accelerate delivery, reduce technical risk, or improve quality across an organization
• Uses AI to innovate on and improve individual and team engineering practices
• Expertise with Java, Spring Boot, React, Typescript, Postgres, and other object-oriented languages, front-end frameworks, and database technologies
• Strong business acumen and ability to apply technology to solve business problems
• Excellent verbal and written communication and cross-functional collaboration skills
• Proven track record raising the technical capability of senior engineers and teams through coaching, design review, standards-setting, and technical leadership
• Experience representing technical work through internal forums, external conferences, publications, open-source contributions, patents, or other thought leadership channelsMastercard 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 reasonable_accommodation@mastercard.com 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 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.

In line with Mastercard’s total compensation philosophy and assuming that the job will be performed in Canada, the successful candidate will be offered a competitive pay based on location, experience and other qualifications for the role and may be eligible to participate in a discretionary annual incentive program. This posting reflects one or more current openings on our team.

Pay Ranges

Toronto, Canada: $208,000 - $333,000 CAD

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More about this job

Responsibilities

Define highly scalable solution architectures for early-stage product concepts and establish engineering best practices for AI integration. Lead technical strategy across R&D teams while coaching senior engineers to ensure high-quality delivery and innovation.

Requirements

Requires extensive experience in architecting 0-to-1 applications using Generative AI and modern AI frameworks. Candidates must demonstrate strong technical leadership, expertise in cloud platforms, and proficiency in Java, React, and database technologies.

Skills

Generative AI
LLMs
Agentic patterns
Software architecture
Java
Spring Boot
React
Typescript
Postgres
Cloud platforms
Databricks
Snowflake
AWS
Azure
Data analytics
Technical leadership

Visa sponsorship

Not detected in the job text

Keywords

Software Engineering
R&D
Generative AI
LLMs
Agentic patterns
Java
Spring Boot
React
Typescript
Postgres
Databricks
Snowflake
AWS
Azure
Data platforms
Solution architecture
Product development
Technical strategy
Data privacy
Data quality
Cloud computing
Engineering excellence
Innovation
Payments
Commerce
Mentorship
System design
Scalability
Agile
API

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