Senior Lead Software Engineer, Payment Systems in Mississauga

Senior Lead Software Engineer, Payment Systems in Mississauga

Mississauga Full-Time 80000 - 170800 $ / year (est.) Hybrid
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At a Glance

  • Tasks: Lead software development for critical payment applications and mentor a dynamic engineering team.
  • Company: Join Citi, a global leader in financial services with a focus on innovation.
  • Benefits: Enjoy a hybrid work model, competitive salary, and continuous learning opportunities.
  • Other info: Collaborate with world-class teams and access innovative labs for next-gen solutions.
  • Why this job: Make a real impact on global financial infrastructure while working with cutting-edge technology.
  • Qualifications: 6+ years in software engineering with strong leadership and Java expertise.

The predicted salary is between 80000 - 170800 $ per year.

Responsibilities include leading the full software development lifecycle for mission-critical payment applications, from initial architecture through to deployment and ongoing production ownership. Design and build high-throughput, low-latency microservices using Java 8+, Spring Boot, and cloud-native principles to power global payment processing at enterprise scale. Architect active-active multi-region failover strategies, zero-downtime release models, and blue-green or canary deployment pipelines to achieve and sustain 99.99%+ system availability. Champion the adoption of Domain-Driven Design (DDD), event-driven architecture, and containerization using Docker and Kubernetes/OpenShift to modernize legacy payment platforms. Define and enforce API standards for RESTful and event-based interfaces, ensuring every integration is consistent, secure, and built to scale. Mentor and guide a cross-functional engineering team, establishing code review practices and raising the bar for technical quality, reliability, and innovation across the team. Integrate AI-powered developer tools and AI/ML capabilities into production payment workflows to accelerate delivery and improve system intelligence. Partner with product managers, business analysts, and operations teams to translate complex financial requirements into scalable, maintainable technical solutions.

Required Qualifications & Skills:

  • 6+ years of software engineering experience delivering complex, enterprise-scale applications, with at least 3 years in a technical leadership role.
  • Expert-level command of Java and the Spring Boot framework for building and operating production microservices, alongside solid front-end capability in Angular, HTML5, and CSS3.
  • Deep practical knowledge of resilience engineering patterns including Circuit Breakers, Saga orchestration for distributed transactions, and idempotent API design.
  • Hands-on experience with messaging and event-streaming platforms such as Apache Kafka or RabbitMQ, and with containerization technologies including Docker and Kubernetes.
  • Proficiency across both relational databases (such as Oracle) and NoSQL databases (such as MongoDB).
  • Solid grasp of CI/CD pipeline design, automated testing strategies, and modern DevOps practices.
  • Demonstrated ability to adopt and scale AI-powered development tools within an enterprise engineering team.
  • Experience establishing end-to-end observability stacks including distributed tracing, real-time alerting, and production dashboards.

Beneficial Skills & Qualifications:

  • Familiarity with financial services or payments industry standards such as SWIFT, ISO 20022, or clearing and settlement systems.
  • Experience integrating AI/ML capabilities into regulated, production financial systems.
  • Exposure to AI-driven observability platforms to maintain visibility and proactive response across distributed payment ecosystems.

What We Offer:

  • A hybrid working model with 3 days in the office and 2 days working remotely.
  • Strategic technical ownership over global payment infrastructure.
  • Access to Citi's TTS Innovation Labs for collaboration on next-generation financial technology solutions.
  • Continuous learning and professional development resources.
  • Competitive financial reward and wellbeing benefits.
  • Broad exposure across a global business operating in 160 countries.

Benefits:

  • Hybrid working model: 3 days in the office, 2 days remote.
  • Competitive salary range: $120,800.00 - $170,800.00.

Employee Information:

  • Time Type: Full time.
  • Primary Location Full Time Salary Range: $120,800.00 - $170,800.00.

EEO Statement: Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

Senior Lead Software Engineer, Payment Systems in Mississauga employer: Citi

Citi stands out as an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration within its global technology teams. With a commitment to employee growth, Citi provides access to extensive learning resources and a hybrid working model that promotes work-life balance, ensuring that you can thrive both personally and professionally. Join us to make a meaningful impact in the financial technology sector while enjoying competitive compensation and comprehensive wellbeing support.

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Contact Details:

Citi Recruitment Team

We think you need these skills to ace Senior Lead Software Engineer, Payment Systems in Mississauga

Java 8+
Spring Boot
Microservices Architecture
Cloud-Native Principles
Domain-Driven Design (DDD)
Event-Driven Architecture
Docker