Senior Java Full-Stack Developer: Spring, Microservices

Cyber Space Technologies LLC; Montreal (administrative region); On-site; CAD 110,000 - 150,000; Full time

Job summary

Cyber Space Technologies LLC in Montreal seeks an experienced Senior Java Full Stack Developer to design, develop, test, and deploy scalable enterprise applications. You will work with product owners, architects, QA engineers, and other dev teams to deliver robust solutions using Java, Spring Boot, and modern front-end technologies.

The role emphasizes building RESTful services, microservices, and secure integrations, with hands-on work across the stack (UI in Angular/React, databases, and cloud

Qualifications

• 10+ years of professional software development experience.
• Strong expertise in Java/J2EE.

Responsibilities

• Design, develop, and maintain scalable full-stack applications using Java and modern web technologies.
• Develop backend services and microservices using Java 17+ and Spring Boot.
• Design and implement RESTful APIs and integrate with internal and third‑party systems.
• Develop responsive and reusable UI components using Angular or React.
• Work with databases such as PostgreSQL, Oracle, or MySQL.
• Implement application security, authentication, authorization, and secure API integrations.
• Participate in architecture and technical design discussions.
• Write clean, maintainable, reusable, and well‑tested code.
• Develop unit, integration, and automated tests using JUnit, Mockito, Selenium, or equivalent frameworks.
• Work with Kafka or other messaging/event‑streaming technologies.
• Build and maintain CI/CD pipelines using Jenkins, GitHub Actions, GitLab CI, or Azure DevOps.
• Deploy and support applications in AWS, Azure, or GCP environments.
• Troubleshoot production issues and participate in root‑cause analysis.
• Conduct code reviews and provide technical guidance to junior developers.
• Collaborate with Agile/Scrum teams during sprint planning, refinement, development, testing, and releases.
• Work closely with business stakeholders and technical teams to understand requirements and deliver solutions.

Skills

Java/J2EE

Java 17+

Spring Boot

Spring MVC

Spring Data JPA

Spring Security

Microservices

REST APIs

Angular

React

Relational DBs

Kafka

Git & CI/CD

Docker

Kubernetes

AWS

Azure

GCP

JUnit

Mockito

Agile/Scrum

Communication

Tools

Jenkins

GitHub Actions

GitLab CI

Azure DevOps

Job description

Cyber Space Technologies LLC in Montreal seeks an experienced Senior Java Full Stack Developer to design, develop, test, and deploy scalable enterprise applications. You will work with product owners, architects, QA engineers, and other dev teams to deliver robust solutions using Java, Spring Boot, and modern front-end technologies.

The role emphasizes building RESTful services, microservices, and secure integrations, with hands-on work across the stack (UI in Angular/React, databases, and cloud