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Added 9 hours ago
Staff Software Engineer, Messaging Experience
Braze
Toronto, ON
We're looking for a Staff Engineer for our Messaging Experience team, responsible for building, maintaining, and evolving Canvas, our flagship product. That means supporting the…
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Photonics Test Engineer
Xanadu
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- Contract
Build, maintain, and debug complex lab hardware and software systems to support advanced measurements on our photonics devices.
Added 9 hours ago
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Combustion Turbine System Engineer
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- Full-time
organization to recruit a Combustion Turbine Systems Engineer to join its Asset
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Co-op Software Development Engineer in Test (SDET) - Winter 2027
Global Relay
Vancouver, BC
Continuous integration systems such as Bamboo or Jenkins
Added 9 hours ago
Co-op Software Development Engineer in Test (SDET) - Winter 2027
Global Relay
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Continuous integration systems such as Bamboo or Jenkins
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Senior Java Software Engineer
Altis
Ottawa, ON
- $80 to $85 CAD / hour
- Contract
You'll work alongside experienced technical professionals, contribute to the modernization of critical systems, and apply your expertise across both front-end and back-end development. Your…
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Senior Software Developer
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- Full-time
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Staff Software Engineer, Messaging Experience
Braze
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- Full-time
We're looking for a Staff Engineer for our Messaging Experience team, responsible for building, maintaining, and evolving Canvas, our flagship product. That means supporting the…
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Co-op DevOps - Winter 2027
Global Relay
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As a DevOps engineer you will be responsible for the reliability and smooth operation of production and test environments and build automation to improve reliability and efficiency of code…
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Engineer - Payments
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Remote, Canada
- $131,800 to $150,000 CAD / year
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Ingénieur(e) d'exécution de projets/Execution Project Engineer
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Manager, Engineering and System Planning
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Co-op DevOps - Winter 2027
Global Relay
Halifax, NS
- $36,000 to $56,000 CAD / month
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Co-op Software Development Engineer in Test (SDET) - Winter 2027
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…offshore energy operations? We are seeking a highly skilled Subsea Engineer to support our offshore oil and gas team. In this dynamic role, you will support the safe, reliable, and…
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SCADA Engineer
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Experienced Nondestructive Evaluation Engineer
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Altis

Senior Java Software Engineer

Ottawa, ON, Canada

$80 to $85 CAD / hour · Contract

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Job details

Pay: $80 to $85 CAD / hour
Job type: Contract
Apply by: Dec 3, 2026
Posting language: English
Posted: Nov 3, 2026

Original job description

We are seeking an experienced Senior Java Developer to support a federal government initiative focused on strengthening Canada's cybersecurity capabilities. You'll contribute to the development, enhancement, and modernization of enterprise applications, including the transition of an existing cybersecurity analytics platform.

Working with technologies such as Java, React, Python, and GraphQL, you'll help deliver secure, scalable solutions that support critical cybersecurity operations and protect Canada's digital infrastructure.

What's in It for You

You'll join a collaborative, people-first consulting environment that values innovation, partnership, and continuous learning. This opportunity offers exposure to sophisticated cybersecurity technologies, enterprise-scale applications, and meaningful public sector initiatives.

You'll work alongside experienced technical professionals, contribute to the modernization of critical systems, and apply your expertise across both front-end and back-end development. Your contributions will help support the security and reliability of systems that Canadians depend on.

Your Responsibilities

Design, develop, enhance, and maintain web-based applications using Java, JavaScript (React), and Python.
Support the modernization and transition of existing applications into a new analytical platform.
Develop front-end components and perform UX design activities using HTML and CSS.
Build and integrate back-end services and APIs using Java, Python, and GraphQL.
Configure, build, and deploy applications using technologies such as Spring, Gradle, Spark, AKS, and Apache Airflow.
Work with relational databases, including MySQL and Oracle, to support SQL operations, database administration, and data migration.

Skills and Qualifications

Minimum 10 years of experience within the last 15 years working as a Programmer or Software Developer.
Minimum 5 years of hands-on experience within the last 8 years developing web-based applications using Java and JavaScript, including React, with relational database backends.
Minimum 3 years of hands-on experience within the last 8 years performing UX design activities, including HTML and CSS markup and styling.
Minimum 2 years of hands-on experience within the last 7 years using integrated development environments, preferably Eclipse or IntelliJ.
Minimum 2 years of hands-on experience within the last 7 years working with source code repositories such as Git.
Strong understanding of full-stack application development, relational databases, and modern web technologies.
Strong analytical, problem-solving, documentation, and communication skills.

Additional Assets

Experience developing applications using Python within the last 8 years.
Experience with build automation tools such as Ivy, Maven, or Gradle within the last 4 years.
Experience working with GraphQL and JSON within the last 5 years.
Familiarity with Agile methodologies, including Scrum and Kanban, and collaboration platforms such as GitLab, GitHub, or Atlassian Confluence.

Why Partner with Altis

If you've never responded to a Government of Canada request, you're in good hands with Altis. With 35+ years of experience staffing federal projects, we understand procurement processes, hold multiple standing offers, and know how to position candidates competitively. We'll guide you through every step - gathering required information, presenting your experience accurately, and ensuring the process feels transparent, supportive, and personal.

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More about this job

Responsibilities

Design, develop, maintain, and modernize web applications and cybersecurity analytics systems using Java, React, Python, and GraphQL. Build front-end components and back-end APIs, deploy applications, and support database operations and data migration.

Requirements

Requires at least 10 years of programming or software development experience, including recent hands-on experience building Java and JavaScript/React web applications backed by relational databases. Also requires recent UX work with HTML and CSS, experience with an IDE and Git, and strong full-stack, analytical, documentation, and communication skills.

Skills

Java
JavaScript
React
Python
GraphQL
HTML
CSS
Spring
Gradle
Spark
AKS
Apache Airflow
MySQL
Oracle
Git
UX Design

Visa sponsorship

Not detected in the job text

Keywords

Java
JavaScript
React
Python
GraphQL
JSON
HTML
CSS
Spring
Gradle
Ivy
Maven
Spark
AKS
Apache Airflow
MySQL
Oracle
SQL
Eclipse
IntelliJ
Git
GitLab
GitHub
Atlassian Confluence
Agile
Scrum
Kanban
Full-Stack Development
Cybersecurity
Data Migration

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