We are seeking a Senior Full Stack Software Developer for a 6-month contract role.

In this role, you will lead the design, development, and implementation of large-scale enterprise integration solutions and API development.

Working closely with cross-functional teams, you will architect robust, secure, and scalable solutions using enterprise integration tools, modern container platforms, and cloud technologies.

You will play a pivotal role in translating complex business requirements into technical specs, designing data models, and ensuring high-quality software delivery across the full lifecycle.

Advantages High-Impact Work: Contribute to large-scale, complex enterprise IT initiatives.

Hybrid Flexibility: Hybrid work model with up to 3 days onsite flexibility.

Cutting-Edge Tech Stack: Hands-on exposure to cloud environments, Open

Shift/Kubernetes, Mule

Soft, and modern CI/CD practices.

Collaborative Culture: Work directly with senior stakeholders and multidisciplinary technical teams.

Responsibilities Integration & API Development: Design, build, test, and sustain scalable enterprise integration flows, REST APIs, and reusable integration services using Apache Camel, Mule

Soft, and Enterprise Java.

System Architecture & Design: Develop complex integration architectures, map data flows, design database schemas, and create comprehensive technical and architectural documentation.

Platform & Infrastructure Management: Deploy and manage containerized applications using Open

Shift and Kubernetes, leveraging cloud services and modern CI/CD Dev

Ops practices.

Business Translation & Collaboration:



Collaborate with cross-functional technical teams and business stakeholders to translate business needs into technical specifications and resolve integration, governance, and data-ownership challenges.

Data Reliability & Quality Assurance: Implement fault-tolerant patterns (retries, DLQs, data consistency), design data schemas/ERDs, author test plans, and track defects to maintain solution integrity and high delivery standards.

Security & Compliance: Ensure all application designs and data schemas comply with legislative standards, corporate policies, security protocols, and privacy frameworks.

Qualifications Education: Bachelors degree in Computer Science, Engineering, or a related field.

Contract Duration: 6 months.

Enterprise Integration: Advanced experience with Apache Camel, Mule

Soft, Enterprise Java, REST APIs, and data transformation formats (JSON/XML).

Strong background in API-led connectivity and patterns.

Cloud & Containers: Expertise in Open

Shift/Kubernetes for containerized deployments; experience with AWS services (Lambda, SQS, S3) is an asset.

Data & Databases: Solid SQL skills, data modeling experience, and deep knowledge of fault-tolerant patterns (DLQs, retries, data monitoring).

Dev

Ops & Process: Proficiency with source control, automated testing, CI/CD pipelines, and Infrastructure-as-Code.

System Knowledge: Experience integrating enterprise applications across CRM, ERP, document management, and regulatory systems.

Domain Preference:



Public sector experience is strongly preferred.

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 to ensure their ability to fully participate in the interview process.

📌 Senior Full Stack Software Developer (Toronto)
🏢 randstad canada
📍 Toronto