columbus senior developer java, microservices, react.js Jobs – 123 Openings This Week

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Java Developer
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We design and develop our back end systems and REST APIs that serve hundreds of millions of searches a day, collecting and parsing data across thousands of…
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Sr. Java Developer on Capital Market
Lexo Consulting Services Inc. —Toronto, ON
You will join a cross-functional team and be supported by senior technical leadership while working on modern Java stacks and learning to interface with an…
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Senior Java Developer

Tangentia
Toronto, ON

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Job details

1 day ago

Skills

Spring Boot
Azure
Oracle
Kubernetes
Ansible
Relational databases
DevOps
Git
Google Cloud Platform
Java
Microservices
AWS
Docker
Cloud development
PostgreSQL
Terraform
Splunk
RabbitMQ
JPA
REST
GitHub
APIs
Kafka
Spring framework
Hibernate
Spring MVC

Full job description

Role: Senior Java Developer
Location: Toronto, ON

Role Summary
We are seeking an experienced Senior Java Developer to design, develop, and maintain enterprise-grade applications. The ideal candidate brings strong expertise in Java, cloud-native development on OpenShift, and CI/CD automation using GitHub Actions.
Key Responsibilities

Design and develop scalable, high-performance Java applications using modern frameworks (Spring Boot, Spring Cloud, Microservices)
Build, deploy, and manage containerized applications on Red Hat OpenShift
Design and maintain GitHub Actions CI/CD pipelines for automated build, test, and deployment workflows
Write clean, testable, and well-documented code following enterprise coding standards
Conduct code reviews and promote engineering best practices
Collaborate with cross-functional teams including DevOps, QA, and architecture to deliver end-to-end solutions
Troubleshoot production issues, perform root cause analysis, and implement corrective measures
Participate in Agile ceremonies and contribute to sprint planning, estimation, and delivery

Required Qualifications

5+ years of hands-on experience in Java development (Java 11+)
Strong proficiency in Spring Boot, Spring MVC, Spring Security, and RESTful API design
Proven experience deploying and managing applications on Red Hat OpenShift (Kubernetes)
Hands-on experience building and maintaining GitHub Actions workflows and pipelines
Solid understanding of containerization (Docker), container orchestration, and cloud-native patterns
Experience with relational databases (Oracle, PostgreSQL) and ORM frameworks (Hibernate/JPA)
Proficiency with Git, branching strategies, and pull request workflows
Strong understanding of microservices architecture, API gateway patterns, and service mesh concepts
Familiarity with monitoring and logging tools (Splunk, Grafana, Prometheus, ELK)

Nice to Have

Experience with messaging systems (Kafka, RabbitMQ, IBM MQ)
Exposure to Infrastructure as Code (Terraform, Ansible)
Cloud platform experience (AWS, Azure, or GCP)
Knowledge of security best practices (OAuth2, OIDC, JWT, Vault)
Professional certifications (e.g., Oracle Certified Professional, Red Hat Certified Specialist)

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