senior software developer.

We are seeking a highly accomplished Senior Software Developer for an enterprise-level contract opportunity based in Toronto. In this role, you will take on a premier engineering capacity within full-stack application development, cloud architectures, and database streams, specializing in modernizing multi-tiered web, microservices, and mobile-ready solutions.

As a principal developer, you will bridge the gap between complex business requirements, secure cloud deployment pipelines, and scalable database architectures. Operating fully onsite in Toronto, you will lead the end-to-end design and implementation of secure web applications, build DevSecOps pipelines in Microsoft Azure, optimize relational database systems, and enforce strict accessibility, privacy, and security standards across the software development lifecycle.

Location: Toronto, ON

Assignment Type: Onsite (5 days per week)

Contract Duration: 7 months (with potential for 1-time extension)

Advantages
Advanced Azure & DevSecOps Stack: Hands-on development utilizing Azure Container Apps, AKS, Azure Data Factory, API Management, and automated security scanning pipelines.

Modern Architectural Scope: Lead microservices design, containerized deployments (Docker/Kubernetes), and Zero-Trust security integrations.

Full-Stack Technical Depth: Engage across Java/Jakarta, J2EE, MVC frameworks, REST/SOAP APIs, and MS SQL Server 2019+ data modeling.

High-Impact Domain Focus: Contribute to critical enterprise solutions incorporating strict privacy, security (PHIPA/FIPPA), and digital accessibility (AODA) frameworks.

Responsibilities
Design, develop, and maintain multi-tiered web, client/server, and mobile application solutions using J2EE, Java (Jakarta), MVC, JavaScript/jQuery, JSON, REST/SOAP APIs, and JPA/Hibernate.

Architect and implement Azure cloud services, including Azure API Management, Azure Container Apps, Azure Kubernetes Service (AKS), Azure SQL Database, and Azure Entra ID.

Engineer end-to-end CI/CD DevSecOps pipelines using Git, GitHub, and Azure DevOps with integrated automated deployment, vulnerability scanning, and dependency checking.

Perform relational database administration, data modeling, T-SQL scripting, stored procedure development, and query performance tuning on MS SQL Server (2019 and later).

Design, build, and deploy ETL/ELT pipelines using Azure Data Factory for hybrid on-premises to cloud data synchronization and enterprise analytics support.

Implement Zero-Trust security architectures, incorporating TLS, mTLS, RBAC/ABAC, SAML, and OAuth security tokens across microservices and web services.

Ensure all web applications and user interfaces comply fully with Accessibility for Ontarians with Disabilities Act (AODA) standards.

Create and update formal technical documentation, architecture artifacts (data models, deployment diagrams, component models), and system specifications.

Author unit tests and integration tests, assist with data validation, and support user acceptance testing (UAT) through active defect triage and resolution.

Perform root-cause troubleshooting, performance monitoring, and system tuning in production and pre-production environments.

Provide technical guidance, code reviews, and knowledge transfer to support team members and ensure long-term solution maintainability.

Qualifications
Core Technical & Architectural Requirements
Full-Stack & Application Development: 10+ years of experience in structured development, design, and implementation of multi-tiered web and mobile applications using J2EE, Java (Jakarta), MVC, JavaScript, REST/SOAP APIs, and microservices architectures.

Relational Database & Data Integration: 10+ years of hands-on experience with MS SQL Server (2019 or later), T-SQL, stored procedures, data modeling, ETL/ELT pipelines, and database performance tuning.

Azure Cloud Services: 3+ years of hands-on development experience with Azure Cloud technologies, including API Management, Azure Container Apps, AKS, Azure Data Factory, Azure SQL, and Azure Entra ID.

DevSecOps & CI/CD Pipelines: 3+ years of experience constructing automated CI/CD DevSecOps pipelines in Azure DevOps/GitHub featuring automated security scanning and dependency checks, alongside 5+ years of Git version control experience.

Security & Zero-Trust Architecture: 3+ years of experience building secure web services using TLS/mTLS, OAuth/SAML, RBAC/ABAC, and Zero-Trust principles.

Containers & Orchestration: Practical experience with Docker containerization and Kubernetes orchestration.

Privacy, Governance & Public Sector Assets
Privacy & Security Context: Demonstrated experience navigating privacy and security requirements within healthcare or highly regulated enterprise environments (e.g., PHIPA/FIPPA compliance).

Accessibility Standards: Proven experience ensuring web applications comply with AODA standards.

Public Sector Context: 5+ years of experience working within federal, provincial, or broader public-sector environments, including familiarity with enterprise architecture frameworks, gating processes, and Agile/Waterfall methodologies.

Soft Skills & Professional Attributes
Technical Leadership: Proven ability to guide technical designs, recommend platform improvements, and mentor delivery teams.

Analytical Diagnostics: Strong critical thinking, analytical problem-solving, and troubleshooting capabilities in complex production environments.

Communication & Collaboration: Excellent written, verbal, and presentation skills to effectively consult with multi-disciplinary stakeholders.

Summary
If you're interested in the "Senior Software Developer" role based in Toronto, we encourage you to apply online at
Only qualified candidates will be contacted for the next steps. We look forward to hearing from you!

Randstad Canada is committed to fostering a workforce reflective of all peoples of Canada. As a result, we are committed to developing and implementing strategies to increase the equity, diversity and inclusion within the workplace by examining our internal policies, practices, and systems throughout the entire lifecycle of our workforce, including its recruitment, retention and advancement for all employees. In addition to our deep commitment to respecting human rights, we are dedicated to positive actions to affect change to ensure everyone has full participation in the workforce free from any barriers, systemic or otherwise, especially equity-seeking groups who are usually underrepresented in Canada's workforce, including those who identify as women or non-binary/gender non-conforming; Indigenous or Aboriginal Peoples; persons with disabilities (visible or invisible) and; members of visible minorities, racialized groups and the LGBTQ2+ community.

Randstad Canada is committed to creating and maintaining an inclusive and accessible workplace for all its candidates and employees by supporting their accessibility and accommodation needs throughout the employment lifecycle. We ask that all job applications please identify any accommodation requirements by sending an email to View email address on randstad.com to ensure their ability to fully participate in the interview process.

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