senior software developer - full stack.

We are seeking a highly accomplished Senior Software Developer - Full Stack specializing in low-code cloud architecture and database engineering to drive a major technical evergreening and data infrastructure modernization initiative. In this role, you will take technical ownership of upgrading, restructuring, and migrating a suite of business-critical web applications to modern cloud environments. Operating across full-stack boundaries, you will translate technical system specifications into secure, high-performance web applications, engineer resilient backend integration layers, and optimize data architectures to ensure full alignment with enterprise data strategy standards.

Location: Remote (Canada)

Duration: 8-month contract.

Advantages
Direct Stack Ownership: Command a primary architectural role driving the total modernization and cloud adoption path for critical enterprise software suites.

Cutting-Edge Cloud Footprint: Advance your full-stack engineering portfolio inside a premier, high-velocity database environment utilizing advanced OCI resources.

High-Impact Architecture Delivery: Lead a legacy-defining evergreening project that directly transforms fragmented, end-of-life software structures into fluid, cloud-native services.

Total Remote Autonomy: Capitalize on a structured, fully remote contract workflow engineered to support deep technical production, milestones focus, and safe release cycles.

Responsibilities
Low-Code Web Application Engineering: Design, develop, test, and continuously enhance enterprise-tier web applications leveraging the Oracle APEX rapid application development framework.

Advanced Interface Implementation: Implement highly interactive, responsive, and data-driven user interfaces utilizing specialized APEX features such as interactive grids, custom dashboards, analytical charts, and complex dynamic actions.

Backend API & Microservices Integration: Architect, deploy, and maintain secure RESTful web services and transactional data paths using Oracle REST Data Services (ORDS) to facilitate seamless application interoperability.

Database Programming & Architecture: Lead logical and physical data modeling tracks, writing highly optimized SQL queries, stored procedures, and complex PL/SQL packages to handle high-volume data manipulation and transactional integrity.

Cloud-Native Modernization & Migration: Support the infrastructure transition from end-of-life systems onto modern cloud infrastructure, specifically Oracle Cloud Infrastructure (OCI) platforms.

Tier-3 Troubleshooting & Environment Triage: Conduct forensic root-cause analysis to debug, patch, and resolve deep-seated software bugs, installation scripts, or performance bottlenecks during multi-tier code deployments, data conversions, and system migrations.

Quality Assurance & Verification: Formulate detailed technical specifications, generate clean code, manage source controls, and execute comprehensive unit and system integration testing to ensure absolute reliability.

Accessibility & Governance Compliance: Verify that all digital interaction layers, user workflows, and system documentation adhere strictly to information management concepts and digital inclusivity regulations (AODA compliance standards).

Technical Collaboration & Walkthroughs: Facilitate cross-functional design walkthrough sessions, collaborate tightly with project infrastructure teams, and author complete technical artifacts and system runbooks.

Qualifications
Core Application Development Seniority: Progressive professional experience serving as a Senior Full-Stack Developer or Core Software Engineer within mature, data-dense enterprise application environments.

Oracle APEX Domain Specialization: Demonstrated hands-on expertise building and debugging enterprise-grade solutions using Oracle APEX, with verified proficiency running interactive reports and advanced dynamic actions.

ORDS Integration Competency: Solid, practical understanding of Oracle REST Data Services (ORDS), with a proven track record creating secure RESTful APIs for database communication layers.

Master-Level Database Programming: Strong professional command of relational database design, data modeling, and advanced programming using SQL and PL/SQL.

Cloud Infrastructure Familiarity: Direct exposure to cloud platform ecosystems, with a specific focus on deploying or supporting web applications hosted within Oracle Cloud Infrastructure (OCI) environments.

Systems Analysis & Technical Documenting: Experienced in reviewing installation scripts, documenting technical specifications, and interpreting abstract structural definitions into working applications.

Nice to Have:
Prior professional development experience delivering system evergreening, data warehouse migrations, or full-stack software solutions within the public sector or a highly regulated industry space.

Foundational familiarity with digital inclusion frameworks, including AODA and WCAG guidelines.

Summary
If you're interested in the "Senior Software Developer - Full Stack" 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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