Senior Software Development Engineer (m/f) (H/F)

We are seeking a Senior Software Developer with over a decade of expertise in Java development and large-scale web applications to join our team in Toronto. This role is designed for a technical leader who excels at translating complex system specifications into robust, maintainable, and extensible software solutions. You will be responsible for the full Software Development Life Cycle (SDLC), utilizing modern front-end frameworks and microservices architecture to enhance our digital product suite. The ideal candidate is a proactive problem-solver who can navigate aggressive timelines while maintaining high standards for clean code and architectural integrity.

Contract Duration: 6-month contract with potential for extension

Architectural Influence: Lead the implementation of core architecture principles for high-visibility, large-scale applications.

Technology Stack: Work with a diverse and modern stack across both Java backend and modern JavaScript frontend frameworks.

Based in a prime Toronto office with a predictable, professional onsite schedule.

Technical Implementation: Translate technical specifications into working, tested applications by developing detailed programming specifications and writing/generating high-quality code.

Conduct design walkthrough sessions with the project team.

Build and support multi-client web applications using Java, Oracle/SQL, and modern front-end stacks (React, TypeScript, NextJS, VueJS).

Troubleshoot complex technical issues arising during operation, including providing support for implementation, conversion, and migrations.

DevOps & Agile: Work within Agile methodologies using Azure DevOps for continuous integration and delivery.

Documentation & QA: Compile data-driven programs, conduct unit tests, and maintain comprehensive system documentation as required.

Compliance: Ensure all applications meet the Accessibility for Ontarians with Disabilities Act (AODA) and related standards.

Java Expertise: 10+ years of hands-on Java development experience with Oracle or SQL databases.

Front-End Proficiency: 5+ years of experience with React, TypeScript, HTML5, CSS3, and NodeJS.

Web Services: 5+ years of experience developing RestAPI and RESTful WebServices.

Architectural Knowledge: Proven experience with microservices architecture and Object-Oriented coding practices (design patterns, refactoring, clean code).

Solid knowledge of security gateways (JWT, OAuth2.Experience in large-scale web application design, debugging, and post-implementation support.

Public Sector: Familiarity with OPS (Ontario Public Service) development standards and processes is a significant asset.

If you are a seasoned Java expert who thrives in high-performance environments and has a passion for building extensible web applications, we encourage you to apply online at Only qualified candidates will be contacted for the next steps. 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.