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 Client , 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.
- Solid 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.

📌 Senior Java Developer / Technical Lead (Toronto)
🏢 Cynet Systems
📍 Toronto