Senior Java Full Stack Developer – Spring Boot, REST APIs & Azure

Senior Java Full Stack Developer – Spring Boot, REST APIs & Azure

Location: Toronto / GTA, Ontario Experience Level: Senior

Job Description

InnosysTech is looking for a Senior Java Full Stack Developer with strong hands-on experience building enterprise applications using Java, Spring Boot, REST APIs, modern JavaScript frameworks and Microsoft Azure .

The ideal candidate will have experience designing and developing scalable backend services, integrating enterprise systems through APIs, working with relational databases, and contributing to modern cloud-based application delivery.

Current Toronto postings for comparable senior Java roles consistently emphasize Java/Spring Boot, microservices, REST APIs, SQL/database development, Azure, CI/CD, and Angular or React as the core combination.

Responsibilities

• Design, develop enterprise applications using Java / JEE and Spring Boot .
• Build and enhance RESTful APIs, microservices and backend services .
• Develop responsive front-end components using Angular and/or React .
• Integrate applications with internal and external systems using APIs and enterprise integration patterns.
• Design and optimize relational database solutions using Oracle, PostgreSQL, SQL Server or similar databases .
• Develop secure application components using authentication and authorization standards such as OAuth2, OIDC and JWT .
• Deploy and support applications in Microsoft Azure environments.
• Participate in the design and implementation of CI/CD pipelines using Azure DevOps, Git or similar tools.
• Troubleshoot application, integration and production issues and perform root-cause analysis.
• Write clean, maintainable and testable code and participate in peer code reviews.
• Collaborate with architects, business analysts, QA engineers, DevOps teams and other developers throughout the SDLC.
• Participate in Agile/Scrum ceremonies, technical design discussions and release activities.

Required Skills

• 8+ years of professional software-development experience.
• Strong recent hands-on experience with Java / JEE .
• Strong experience with Spring Boot and Spring Framework .
• Experience designing and developing RESTful APIs and microservices .
• Strong relational database and SQL experience, preferably with Oracle and/or PostgreSQL .
• Hands-on experience with Angular and/or React .
• Experience deploying or supporting applications in Microsoft Azure .
• Experience with Git and CI/CD pipelines , preferably Azure DevOps.
• Strong understanding of application security and API authentication concepts such as OAuth2, OIDC or JWT .
• Experience with application design, debugging, performance optimization and production support.
• Strong understanding of Agile/Scrum software-delivery practices.

Nice to Have

• Docker and Kubernetes / OpenShift.
• Kafka, JMS or other messaging technologies.
• Spring Security.
• Hibernate / JPA.
• Maven / Gradle.
• Azure Functions, App Services, Logic Apps or Service Bus.
• API gateways and enterprise integration platforms.
• Automated unit and integration testing.
• Experience building high-volume or mission-critical enterprise applications.
• AODA/WCAG accessibility experience.
• Previous Ontario public-sector or broader Canadian public-sector experience.

Comparable Toronto postings also commonly call for Docker/Kubernetes, Kafka or messaging, Spring Security, Git, API security and cloud deployment as secondary or preferred skills.

What We’re Looking For

We are interested in developers who can clearly demonstrate hands-on engineering ownership , not candidates whose recent experience is primarily application support.

Your resume should show examples of:

• Java and Spring Boot applications you personally developed
• REST APIs or integrations you designed or implemented
• Microservices architecture
• Database development using SQL / Oracle / PostgreSQL
• Angular / React development
• Azure deployment or cloud integration
• CI/CD and source-control practices
• Troubleshooting or optimizing production applications

Pay: $81,357.16-$142,662.05 per year

Work Location: Remote