We are seeking a highly accomplished Senior Software Developer - Full Stack for an enterprise-level contract opportunity based in Toronto. In this role, you will take on a premier full-stack software engineering, web application architecture, and API design capacity, specializing in building, expanding, and maintaining scalable multi-client web applications.
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As a senior full-stack developer, you will bridge the gap between responsive front-end interfaces, reactive state engines, robust Java back-end services, and relational database systems. Operating fully onsite in Toronto, you will lead end-to-end web application development using React, TypeScript, Node.js, Next.js, RxJS, Java, and RESTful APIs within modern cloud and containerized environments. This position demands a technical software authority who can design loosely coupled, message-oriented, or event-based architectures, optimize database query performance, configure automated CI/CD release pipelines, and ensure solutions conform to enterprise architecture and digital accessibility standards.
Location: Toronto, ON
Assignment Type: Onsite (5 days per week)
Contract Duration: 6-month contract (with potential for extension)
Advantages
Modern Full-Stack Architecture: Hands-on engineering across React, TypeScript, Node.js, Next.js, RxJS, and Java microservices.
Architectural Diversity: Design high-throughput systems leveraging message-oriented, event-based, and reactive architectural patterns.
DevOps & Integration: Configure automated CI/CD release pipelines and work management workflows using Azure DevOps.
Enterprise Digital Scope: Build performant web interfaces compliant with WCAG and AODA digital accessibility standards.
Responsibilities
Translate complex technical system specifications into working, fully tested web applications across the complete SDLC.
Design, build, and maintain responsive front-end user interfaces using React, TypeScript, HTML5, CSS3, Next.js, VueJS, and RxJS.
Develop, secure, and deploy robust RESTful Web Services, microservices, and back-end integration components using Java and Node.js.
Design, optimize, and manage relational databases, writing complex SQL queries, stored procedures, and schema definitions in Oracle or SQL Server.
Implement security gateways and protocols, including JWT, OAuth2.0, and SSL certificates, to protect API communication.
Configure, manage, and automate continuous integration and continuous deployment (CI/CD) pipelines within Azure DevOps.
Build data pipelines to execute extraction, transformation, and loading (ETL) tasks to support application data requirements.
Perform application troubleshooting, defect isolation, root-cause analysis, and system performance tuning across all stack layers.
Conduct peer code reviews and design walkthrough sessions to enforce clean code principles, design patterns, and architectural standards.
Author comprehensive technical specifications, detailed programming documentation, runbooks, and API specifications.
Qualifications
Core Technical & Full-Stack Requirements
Application Engineering Tenure: Minimum 10+ years of hands-on experience designing and developing large-scale, multi-client web applications.
Java & Relational Database Mastery: Minimum 10+ years of hands-on Java development experience integrated with Oracle or SQL databases.
Modern Web Stack: Minimum 5+ years of hands-on experience with RESTful APIs, React, TypeScript, HTML5, CSS3, and Node.js.
Front-End & Reactive Frameworks: Demonstrated working experience with RxJS, Next.js, and VueJS.
Architectural Patterns: Strong working knowledge of major architecture styles (message-oriented, reactive, event-based) and microservices design.
DevOps & CI/CD Tooling: Practical experience using Azure DevOps for source control, sprint boards, and automated CI/CD pipelines.
Accessibility Standards: Proven experience developing web applications compliant with WCAG and AODA standards.
Preferred Technical Assets & Knowledge
Security Standards: Familiarity with authentication and authorization protocols (JWT, OAuth2.0, SSL Certificates).
Framework Diversity: Knowledge of Angular/AngularJS, Java WebLogic, Tomcat, or Web API documentation tools (Swagger/OpenAPI).
Public Sector Context: Knowledge of public sector development standards, IT governance, and Information Management principles.
Soft Skills & Delivery Attributes
Analytical Problem Solving: Superior analytical and troubleshooting capabilities to resolve complex technical defects under aggressive timelines.
Communication & Collaboration: Outstanding verbal and written communication skills with strong interpersonal abilities to collaborate effectively in multidisciplinary teams.
Summary
If you're interested in the "Senior Software Developer - Full Stack" role based in Toronto, we encourage you to apply online at www.randstad.ca.
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 accessibility@randstad.ca to ensure their ability to fully participate in the interview process.
This posting is for existing and upcoming vacancies.
show more
We are seeking a highly accomplished Senior Software Developer - Full Stack for an enterprise-level contract opportunity based in Toronto. In this role, you will take on a premier full-stack software engineering, web application architecture, and API design capacity, specializing in building, expanding, and maintaining scalable multi-client web applications.
As a senior full-stack developer, you will bridge the gap between responsive front-end interfaces, reactive state engines, robust Java back-end services, and relational database systems. Operating fully onsite in Toronto, you will lead end-to-end web application development using React, TypeScript, Node.js, Next.js, RxJS, Java, and RESTful APIs within modern cloud and containerized environments. This position demands a technical software authority who can design loosely coupled, message-oriented, or event-based architectures, optimize database query performance, configure automated CI/CD release pipelines, and ensure solutions conform to enterprise architecture and digital accessibility standards.
Location: Toronto, ON
Assignment Type: Onsite (5 days per week)
Contract Duration: 6-month contract (with potential for extension)
...
Advantages
Modern Full-Stack Architecture: Hands-on engineering across React, TypeScript, Node.js, Next.js, RxJS, and Java microservices.
Architectural Diversity: Design high-throughput systems leveraging message-oriented, event-based, and reactive architectural patterns.
DevOps & Integration: Configure automated CI/CD release pipelines and work management workflows using Azure DevOps.
Enterprise Digital Scope: Build performant web interfaces compliant with WCAG and AODA digital accessibility standards.
Responsibilities
Translate complex technical system specifications into working, fully tested web applications across the complete SDLC.
Design, build, and maintain responsive front-end user interfaces using React, TypeScript, HTML5, CSS3, Next.js, VueJS, and RxJS.
Develop, secure, and deploy robust RESTful Web Services, microservices, and back-end integration components using Java and Node.js.
Design, optimize, and manage relational databases, writing complex SQL queries, stored procedures, and schema definitions in Oracle or SQL Server.
Implement security gateways and protocols, including JWT, OAuth2.0, and SSL certificates, to protect API communication.
Configure, manage, and automate continuous integration and continuous deployment (CI/CD) pipelines within Azure DevOps.
Build data pipelines to execute extraction, transformation, and loading (ETL) tasks to support application data requirements.
Perform application troubleshooting, defect isolation, root-cause analysis, and system performance tuning across all stack layers.
Conduct peer code reviews and design walkthrough sessions to enforce clean code principles, design patterns, and architectural standards.
Author comprehensive technical specifications, detailed programming documentation, runbooks, and API specifications.
Qualifications
Core Technical & Full-Stack Requirements
Application Engineering Tenure: Minimum 10+ years of hands-on experience designing and developing large-scale, multi-client web applications.
Java & Relational Database Mastery: Minimum 10+ years of hands-on Java development experience integrated with Oracle or SQL databases.
Modern Web Stack: Minimum 5+ years of hands-on experience with RESTful APIs, React, TypeScript, HTML5, CSS3, and Node.js.
Front-End & Reactive Frameworks: Demonstrated working experience with RxJS, Next.js, and VueJS.
Architectural Patterns: Strong working knowledge of major architecture styles (message-oriented, reactive, event-based) and microservices design.
DevOps & CI/CD Tooling: Practical experience using Azure DevOps for source control, sprint boards, and automated CI/CD pipelines.
Accessibility Standards: Proven experience developing web applications compliant with WCAG and AODA standards.
Preferred Technical Assets & Knowledge
Security Standards: Familiarity with authentication and authorization protocols (JWT, OAuth2.0, SSL Certificates).
Framework Diversity: Knowledge of Angular/AngularJS, Java WebLogic, Tomcat, or Web API documentation tools (Swagger/OpenAPI).
Public Sector Context: Knowledge of public sector development standards, IT governance, and Information Management principles.
Soft Skills & Delivery Attributes
Analytical Problem Solving: Superior analytical and troubleshooting capabilities to resolve complex technical defects under aggressive timelines.
Communication & Collaboration: Outstanding verbal and written communication skills with strong interpersonal abilities to collaborate effectively in multidisciplinary teams.
Summary
If you're interested in the "Senior Software Developer - Full Stack" role based in Toronto, we encourage you to apply online at www.randstad.ca.
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 accessibility@randstad.ca to ensure their ability to fully participate in the interview process.
This posting is for existing and upcoming vacancies.
show more
