Job Title: Senior Java Developer (Level 3)

Location: Ottawa, Ontario (In office Vanier location)

Contract (1 year, with up to three additional one-year option periods)

Security Clearance: Must meet Enhanced Reliability security requirements

We are seeking experienced Senior Java Developers 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.

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.

Design, develop, enhance, and maintain web-based applications using Java, JavaScript (React), and Python.

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.

Work with relational databases, including MySQL and Oracle, to support SQL operations, database administration, and data migration.





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.

Strong understanding of full-stack application development, relational databases, and modern web technologies.

Additional Assets

Experience developing applications using Python within the last 8 years.

Familiarity with Agile methodologies, including Scrum and Kanban, and collaboration platforms such as GitLab, GitHub, or Atlassian Confluence.

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 stepgathering required information, presenting your experience accurately, and ensuring the process feels transparent, supportive, and personal.

We welcome individuals of all backgrounds, experiences, and identities including those who identify as women, members of racialized groups, Indigenous Peoples, persons with disabilities, and 2SLGBTQIA+ communities. If you require an accommodation, please review our accessibility policy and reach out to our accessibility officer with any questions. On occasion, we also use AI-assisted tools to help review applications.

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📌 Cybersecurity Software Developer (Ottawa)
🏢 Altis
📍 Ottawa