Senior Java Back - End Developer with 5+ years of experience to lead end-to-end technical design and delivery of mission‑critical systems. You will own architecture decisions, drive engineering excellence, mentor senior engineers, and partner with product, security, and platform teams to build scalable, reliable, and secure distributed systems. Create high-level and low-level designs, integration patterns, API contracts, and reference implementations.

Establish coding standards, code review practices, and secure‑by‑default patterns. Mentor and coach senior engineers; support career growth and succession of technical leaders. Build core services using Java (17+), Spring Boot, REST/GraphQL, and message/event streaming.

Optimize for performance, concurrency, observability, and operational excellence (SLOs, error budgets). Drive quality with unit/integration/contract testing, test data strategy, and automated quality gates. Design for AWS/Azure/GCP, container orchestration (Kubernetes), service mesh, and CI/CD.

Implement infrastructure‑as‑code (IaC) patterns and secrets management. Data & Integration Architect integrations across SQL/NoSQL, caching (Redis), and event streams (Kafka/Pulsar). Define data contracts, schema evolution strategies, and idempotent/eventual consistency patterns.

Ensure compliance with regulatory and audit requirements where applicable. Translate business needs into technical roadmaps and architecture runway. Communicate trade‑offs and decisions to both technical and non‑technical audiences. 5+ years of progressive experience building enterprise systems, with 5+ years in Java and Spring at scale.

Java 11/17+,



Spring Boot, Spring Cloud RDBMS (PostgreSQL/MySQL/Oracle) and NoSQL (MongoDB/Cassandra/DynamoDB) Caching (Redis), CI/CD (GitHub Actions/Azure DevOps/Jenkins), IaC (Terraform/ARM) Solid grasp of concurrency, performance tuning, resiliency patterns (circuit breakers, retries, bulkheads), and fault‑tolerance. Demonstrated leadership of architectural forums, design reviews, and mentorship. Robust communication and stakeholder management skills.

Security: Threat modeling, shift‑left security, SAST/DAST, secrets rotation, mTLS.

Data: CDC (Debezium), schema registry, exactly‑once semantics, streaming ETL. Bachelor’s degree/University degree or equivalent experience Full time Primary Location Full Time Salary Range

$Automated Processing and AI

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📌 Senior Java Back - End Developer - Assistant Vice President (Mississauga)
🏢 Citi
📍 Mississauga