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Senior Java Developer

Job in Toronto, Ontario, C6A, Canada
Listing for: Caspian One
Full Time position
Listed on 2026-01-01
Job specializations:
  • Software Development
    Software Engineer, Backend Developer
Job Description & How to Apply Below
Position: Senior Java Developer (Payments)
Direct message the job poster from Caspian One

Contract | Hybrid | Banking – Payments Modernization

Join a high-profile transformation to modernize the bank’s Payments technology stack. You’ll build resilient, cloud-native microservices in the Java ecosystem, integrating payment rails and data services at scale.

What you’ll do

Design, build, and maintain  Java (Java 17+)  microservices with  Spring Boot  for high-throughput payment processing.

Implement  event-driven  patterns (Kafka) and  API-first  architectures (REST/gRPC).

Deploy and run services on  Azure  (AKS) with  Docker/Kubernetes ; optimize reliability, scalability, and security.

Collaborate with BAs, Architects, Data and DB Engineers to deliver domain-aligned services.

Own quality: unit/integration testing, CI/CD (Azure Dev Ops/Git Hub Actions), observability (Open Telemetry, Prometheus, Grafana).

Support migration from legacy platforms; contribute to DDD, clean code, and engineering standards.

Must-have skills

Experience with  Azure  (AKS, ACR, Key Vault, Managed Identities) a plus; at minimum cloud-native familiarity.

Event streaming (Kafka or similar), distributed systems, performance tuning, fault tolerance.

Secure coding (OAuth2/OIDC, mTLS), and enterprise logging/monitoring.

Strong Computer Science fundamentals around design patterns, data structures and OOP concepts.

Nice to have (Payments domain)

Experience with :

Wires  (International  SWIFT , Domestic  Lynx ,  Fed Wire )

Interac e-Transfers ,  Interac Bulk EMT

Payments Shared Services & Data Services

Payments Sanctions Screening

Familiarity with  ISO 20022  (and/or  ISO 8583 ) messaging and canonical data modeling.

Long-term engagement on a strategic payments program, modern tech stack, strong engineering culture.

Application & Logistics

Type :
Contract |  Working :
Hybrid, office is downtown Toronto

Start :
Interviews commencing in the  New Year — apply ASAP  to avoid missing out.

Rates :
Competitive

Visa/Work Authorization :
Citizenship, PR or Open Work Permit (We do not sponsor Closed Permits)

Referrals increase your chances of interviewing at Caspian One by 2x

Apply BELOW
Position Requirements
10+ Years work experience
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