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Job Title: Java Development Lead / Backend Developer
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Yochana

Java Development Lead / Backend Developer

Montreal, QC, Canada

Contract

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Job details

Job type: Contract
Apply by: Dec 9, 2026
Posting language: English
Posted: Nov 9, 2026

Original job description

Job Title: Java Development Lead / Backend Developer

Location: Montreal, Quebec, Canada - Hybrid

Job Summary:

We are looking for an experienced Java Development Lead / Backend Developer with strong expertise in Java 17/21, Spring Boot, GraphQL, and distributed systems. The ideal candidate will be responsible for leading backend development, designing scalable and high-performance applications, and driving technical architecture decisions.

The candidate should have hands-on experience with messaging platforms, distributed caching, microservices, cloud-native technologies, and AI-assisted development tools such as Devin or Claude Code.

Key Responsibilities:

Lead backend development and provide technical direction to the development team.
Design and implement scalable, high-performance applications using Java 17/21 and Spring Boot.
Define application architecture, design patterns, coding standards, and technical best practices.
Develop GraphQL APIs using SPQR, including WebSocket subscriptions.
Implement secure authentication and authorization using OAuth2 and JWT.
Design and optimize distributed data solutions using GridGain/Ignite.
Manage messaging and event-driven integrations using Solace, Kafka, and IBM MQ.
Oversee database design, SQL Server development, and database migrations using Flyway.
Drive application performance optimization, including JVM tuning, heap management, and garbage collection.
Lead code reviews, testing strategies, and technical troubleshooting.
Work with Kubernetes and GitHub Actions for deployment automation and CI/CD.
Encourage AI-assisted development using Devin or Claude Code.

Mandatory Technical Skills:

Java 17/21 (Java 21 preferred).
Spring Boot and Microservices Architecture.
GraphQL (SPQR) and WebSocket subscriptions.
OAuth2 and JWT.
GridGain/Ignite.
Solace or Kafka and IBM MQ.
SQL Server and Flyway.
JUnit, Mockito, and Cucumber.
Kubernetes and GitHub Actions.
AI coding tools: Devin or Claude Code.

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More about this job

Responsibilities

Lead backend development and guide technical architecture, standards, and best practices while building scalable, high-performance applications with Java and Spring Boot. Oversee APIs, security, distributed data and messaging, databases, performance optimization, testing, troubleshooting, CI/CD, and the use of AI-assisted development tools.

Requirements

The role requires strong experience with Java 17/21, Spring Boot, microservices, GraphQL with SPQR and WebSocket subscriptions, OAuth2/JWT, distributed caching, messaging platforms, and SQL Server with Flyway. It also requires experience with testing tools, Kubernetes, GitHub Actions, and AI coding tools such as Devin or Claude Code.

Skills

Java 17/21
Spring Boot
Microservices Architecture
GraphQL
SPQR
WebSocket Subscriptions
OAuth2
JWT
GridGain/Ignite
Solace
Kafka
IBM MQ
SQL Server
Flyway
Kubernetes
GitHub Actions

Visa sponsorship

Not detected in the job text

Keywords

Java 17/21
Spring Boot
Backend Development
Microservices
Distributed Systems
GraphQL
SPQR
WebSocket Subscriptions
OAuth2
JWT
GridGain
Ignite
Solace
Kafka
IBM MQ
SQL Server
Flyway
JUnit
Mockito
Cucumber
Kubernetes
GitHub Actions
CI/CD
JVM Tuning
Heap Management
Garbage Collection
Devin
Claude Code
Event-Driven Integrations
Technical Architecture

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