Senior Systems Software Architect
Job in
Mississauga, Ontario, Canada
Listed on 2026-10-23
Listing for:
Citi
Full Time
position Listed on 2026-10-23
Job specializations:
-
Software Development
Java Developer, Software Architect, Backend Developer, Cloud Engineer - Software
Job Description & How to Apply Below
Architect global payment platforms at Citi using Java, Spring Boot, and resilient microservices in a hybrid working model.
As a Senior Lead Software Engineer, you will modernize Core Payment Systems within Citi’s Treasury and Trade Solutions business. You will set engineering direction for high-throughput platforms spanning 160 countries and more than 140 currencies. The work covers architecture, production ownership, resilience, and scalable integrations.
Key Responsibilities:- Lead software development from architecture through production ownership
- Build high-throughput microservices with Java and Spring Boot
- Design multi-region failover and zero-downtime release strategies
- Define RESTful and event-based API standards
- Mentor engineers and strengthen technical quality
- Six-plus years of software engineering experience
- Three-plus years setting technical direction for teams
- Expert Java and Spring Boot proficiency
- Experience with Docker, Kubernetes, Kafka, or RabbitMQ
- Knowledge of resilience patterns, databases, CI/CD, and testing
Lead Citi’s payment modernization through Java architecture, resilient microservices, and engineering direction across global transaction infrastructure.
Position Requirements
10+ Years
work experience
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