senior technology architect.

We are seeking an accomplished Senior Technology Architect with senior-level Database Administration and Middleware expertise to lead the architecture, design, deployment, and optimization of enterprise-scale technology platforms. In this role, you will be responsible for defining and managing cross-platform technical architectures encompassing hardware, server operating systems, database engines, and middleware integrations. Leveraging deep technical expertise across Oracle Database technologies (including RAC and Data Guard), SQL Server, IBM WebSphere, IBM TRIRIGA, and Unix/Windows environments, you will drive mission-critical database migrations, infrastructure capacity planning, single sign-on implementations, and high-performance system integrations.

Location: Toronto, ON (Fully Onsite – 5 days/week required)

Duration: 11-month contract

Advantages
Dual Architecture & DBA Scope: Drive both strategic infrastructure architecture and hands-on enterprise database administration.

Comprehensive Tech Stack: Work across Oracle 19c RAC, Data Guard, SQL Server, IBM TRIRIGA, WebSphere, ODI, and Hadoop.

Large-Scale Platform Impact: Direct large-scale database migrations, high-volume BI systems (20TB+), and OS modernization initiatives.

Collaborative Onsite Engagement: Partner closely with enterprise architects, database programmers, and operations teams in a dedicated workspace.

Responsibilities
Technical Architecture & Strategy: Lead the definition, recommendation, and implementation of technical architecture across distributed cross-platform environments, including operating systems, middleware, databases, and secure network communications.

Database Administration & Migration: Provide comprehensive administration, performance tuning, and capacity planning for enterprise databases (Oracle 11g/12c/19c and SQL Server 2016), leading database migration and upgrade initiatives.

High Availability & Disaster Recovery: Configure and maintain enterprise database resilience using Oracle Real Application Clusters (RAC), Data Guard, Flashback technology, and structured backup and recovery protocols.

Middleware & Application Infrastructure: Architect, install, configure, upgrade, and maintain middleware platforms, specifically IBM WebSphere, IBM Server (IHS), and IBM TRIRIGA solutions.

Data Integration & ETL Operations: Oversee data integration architecture and provide operational administration for Oracle Data Integrator (ODI), business intelligence platforms, and Hadoop environments.

Platform & OS Management: Lead infrastructure planning, operating system upgrades, server commissioning, and sizing across Windows, Solaris, and Linux (RedHat) servers.

Security & Identity Integration: Design and support enterprise identity and access solutions, including Single Sign-On (SSO) architectures, IAM modernizations, file-upload scanning infrastructure, and user access governance.

Technical Documentation & Governance: Produce detailed architecture blueprints, Design Workbooks, build books, operating manuals, and participate in formal change request assessments and release management boards.

Qualifications
Technical Architecture & Database Seniority: 10+ years of dedicated experience developing and implementing technical architectures and administering large-scale database systems (Strictly Required).

Oracle Database & High Availability: Over 10 years of hands-on experience with Oracle Database (including 19c), Oracle Real Application Clusters (RAC), Data Guard, Flashback technology, backup/recovery, and performance tuning (Strictly Required).

Operating Systems Expertise: 10+ years of hands-on administration experience across UNIX/Linux (Solaris, RedHat Linux) and Windows Server environments (Strictly Required).

SQL Server Administration: Strong hands-on experience supporting Microsoft SQL Server (including SQL Server 2016) and SSRS implementations (Strictly Required).

Middleware Architecture: Demonstrated experience in the architecture, installation, configuration, and upgrading of IBM TRIRIGA, IBM WebSphere, and IBM Server (IHS) (Strictly Required).

Data Integration & ETL: Proven working experience with Oracle Data Integrator (ODI) installation, migration, and administration, along with system and data integration design (Strictly Required).

Nice-to-Have Assets:
Prior technical architecture or senior DBA experience within a public sector or equivalent large-scale enterprise environment.

Experience with Hadoop installation and configuration on Linux environments.

Familiarity with Single Sign-On (SSO) frameworks and Identity and Access Management (IAM) modernization initiatives (e.g., Microsoft Entra ID or Oracle IAM).

Experience with OpenText Enterprise Content Management (ECM) platforms.

Summary
If you're interested in the "Senior Technology Architect" 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 Voir email sur randstad.com to ensure their ability to fully participate in the interview process.

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