Senior Backend Java Developer

Bilinguallink

Mississauga

Hybrid

CAD 110,000 - 124,000

Full time

48 hours ago

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Job summary

Bilinguallink in Toronto, ON is seeking a Senior Backend Java Developer to join agile teams in a hybrid 4-days-onsite model. You will build scalable backend systems, integrate microservices, and guide development with Java, Spring Boot, and API technologies.

The role emphasizes leadership, code quality, and collaboration with Product Owners, Architects, and QA across modern and legacy environments. Contract position with extension potential.

Qualifications

10+ years of professional Java development experience.
5+ years with Spring Boot, RESTful and GraphQL APIs.
Expert in modern Java versions and enterprise backend systems.
CI/CD with GitHub Actions and DevOps practices.

Responsibilities

Collaborate with cross-functional teams to design technical solutions.
Assess user stories, feasibility, and impact during sprints.
Design, develop and deliver robust backend solutions on schedule.
Lead code reviews and ensure enterprise standards and best practices.
Develop and automate unit and functional tests.
Partner with QA for testing and performance validation.
Integrate legacy systems with modern technologies where applicable.
Evaluate performance and optimize interfaces and code.

Skills

Advanced backend Java

Spring Boot & microservices

RESTful APIs & GraphQL

AI-assisted development

CI/CD & DevOps

Enterprise backend architecture

Performance troubleshooting

Agile delivery

Stakeholder communication

Independent work

Tools

Kafka

Maven

DB2

MongoDB

Elasticsearch

OpenShift

PCF

Linux/AIX

Mainframe environments

GitHub Actions

Eclipse

IntelliJ

VS Code

Dynatrace

Postman

Jira

Confluence

Job description

Senior Backend Java Developer

Location: Toronto, ON,

Work Model: Hybrid, 4 days per week onsite

Contract: 6 months, with potential for extension

Rate: $80 to $90/hour, with flexibility for the right candidate

Employment Type: Contract

About the Opportunity

We are seeking an experienced Senior Backend Java Developer to join a large enterprise technology environment working within Agile delivery teams.

This role is ideal for a senior developer with deep expertise in modern Java and Spring Boot who can contribute to complex backend solutions, provide technical guidance, and work closely with Product Owners, Architects, Delivery Managers, QA teams, and other stakeholders.

The successful candidate will work across modern and legacy environments, leveraging technologies including microservices, APIs, cloud platforms, CI/CD, AI-enabled development workflows, and enterprise data platforms.

Key Responsibilities

Collaborate with Product Owners, Delivery Managers, SMEs, Architects, and technical teams to develop and recommend technical solutions.
Assess user stories during each sprint, evaluate feasibility and complexity, recommend technical approaches, and identify potential challenges and impacts.
Design, develop, and deliver high-quality backend solutions within established sprint and project timelines.
Lead and participate in design and code reviews while ensuring development follows industry best practices and enterprise standards.
Develop and automate unit and functional testing to ensure solutions align with business and technical requirements.
Partner closely with QA teams on functional, regression, and performance testing.
Integrate legacy systems with modern and emerging technologies where appropriate.
Evaluate the performance impact of new solutions, code, and interfaces and implement approaches that maximize system performance and user experience.
Apply Agile principles and DevOps practices throughout the software development lifecycle.
Provide second-line support for existing applications running across OpenShift, Linux, and Mainframe environments.

Required Qualifications

Must Have

10+ years of professional Java development experience.
5+ years of hands-on experience with Spring Boot, including development of RESTful APIs, GraphQL APIs, and event processors.
Expert-level knowledge of modern Java, including Java 17, 21, and/or 25, with strong coding and troubleshooting capabilities.
Strong experience developing enterprise-scale backend applications and microservices.
Hands-on experience with CI/CD pipelines and GitHub Actions.
Experience developing automated unit and functional tests.
Hands-on experience with AI tools and agentic workflows, including using AI to improve development quality and delivery speed.
Experience with MCP, microservices, OAuth 2.0, SQL, object-oriented programming, design patterns, and application security.
Strong understanding of Agile development practices and rapid delivery environments.
Ability to work independently, take ownership, and manage multiple priorities.
Strong analytical skills with excellent attention to detail and gap analysis capabilities.
Excellent communication and collaboration skills with the ability to work effectively with both business and technology stakeholders.
Demonstrated curiosity and willingness to learn new technologies quickly.
Experience developing solutions within large enterprise environments.

Preferred Qualifications

Knowledge of IBM Master Data Management (MDM).
Experience supporting Mainframe or J2EE applications.
Front-end UI development experience.
Experience with technologies such as Kafka, Maven, DB2, MongoDB, Elasticsearch, OpenShift, PCF, Linux/AIX, and Mainframe environments.
Experience with development and monitoring tools including Eclipse, IntelliJ, VS Code, Dynatrace, Postman, SoapUI, ServiceNow, Kibana, Apigee, and Vault.
Familiarity with DevOps and collaboration tools including GitHub, UrbanCode Deploy, Helios Pipeline, Snyk, SonarQube, Aqua, JFrog Artifactory, Jira, Confluence, and Mural.

Skills & Competencies