Senior Java Developer / Technical Lead

Job Title: Senior Java Developer / Technical Lead

Job Location: Toronto, ON

Job Type: Contract

Pay Range: $55.00hr - $60.00hr

Job Overview:

Our client is seeking a Senior Java Developer / Technical Lead to design and deliver secure, scalable, and high-volume banking and payment applications. The role will lead the development of Java and Spring Boot microservices, REST APIs, event-driven services, batch-processing capabilities, and containerized workloads across cloud and enterprise platforms. The candidate will provide technical leadership across solution design, application development, code quality, testing, releases, production support, and engineering-team coordination.

Key Responsibilities:

• Design and develop Java and Spring Boot microservices for banking, payments, alerts, account servicing, and customer-facing platforms.
• Build secure RESTful APIs and event-driven integrations using Kafka, RabbitMQ, IBM MQ, or JMS.
• Develop high-volume, low-latency, and resilient distributed services.
• Design batch and sub-batch processing for large datasets, including failure handling and recoverability.
• Implement data archival, restoration, synchronization, and migration capabilities.
• Design and optimize MongoDB and relational-database collections, schemas, indexes, and queries.
• Lead technical design, low-level design, development, testing, release, and production-support activities.
• Provide technical direction, code reviews, development standards, and mentoring to engineering teams.
• Migrate applications to OpenShift and Kubernetes-based container platforms.
• Develop and maintain CI/CD pipelines using Jenkins, Harness, GitHub, Maven, Gradle, and artifact repositories.
• Implement OAuth 2.0, TLS, encryption, and API-security controls.
• Develop automated tests using JUnit, Mockito, Cucumber, Selenium, JMeter, Gatling, WireMock, or comparable tools.
• Build dashboards and operational alerts using Splunk, Kibana, AppDynamics, Instana, or Datadog.
• Troubleshoot production issues by analyzing application logs, performance metrics, event flows, and database behavior.
• Collaborate with product owners, architects, QA, database, security, and DevOps teams.
• Drive application resiliency, performance improvement, cloud adoption, and engineering automation.

Required Skills:

• Advanced Java and J2EE development experience.
• Strong experience with Spring Boot, Spring MVC, Spring Data, Spring Batch, and REST APIs.
• Experience with microservices and event-driven architecture.
• Hands-on experience with Kafka and at least one enterprise messaging technology.
• Strong experience with MongoDB and relational databases such as Oracle or PostgreSQL.
• Experience deploying applications to OpenShift, Kubernetes, AWS, or comparable cloud platforms.
• Strong understanding of API security, OAuth 2.0, TLS, and encryption.
• Experience with Jenkins, Maven, Gradle, GitHub, SonarQube, and CI/CD.
• Experience with automated unit, integration, behavioural, and performance testing.
• Production-support experience using enterprise monitoring and logging tools.
• Proven ability to lead technical delivery and coordinate engineering activities.

Preferred Skills:

• Banking, payments, cards, digital wallets, alerts, or account-servicing experience.
• Experience with Cassandra, MariaDB, or other NoSQL platforms.
• Experience with Apigee or another API-management platform.
• Familiarity with AWS, Pivotal Cloud Foundry, or Google Cloud.
• Knowledge of Autosys and enterprise batch scheduling.
• AWS certification or another relevant cloud certification.
• Experience using AI-assisted software-development tools.

Education:

• Bachelor s degree in Computer Science, Engineering, Information Technology, or a related field.

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• Medical, Dental, and Vision Insurance
• 401(k) Retirement Plan
• Health Savings Account (HSA)
• Disability Insurance (Short-Term and Long-Term)
• Life and AD&D Insurance
• Paid Sick Leave (where required by applicable state or local law)
• Supplemental Insurance Plans
• Identity Theft Protection
• Pet Insurance
• Employee Wellness Programs
• Employee Assistance Program (EAP)
• Career Growth and Professional Development Opportunities