senior software developer.

Do you have proficiency with Git and branching strategies (e.g., GitFlow, trunk‑based development)? Do you have strong understanding of object‑oriented design, SOLID principles, and design patterns? If so, this would be a great opportunity for you!

Our client is looking for a Senior Software Developer for a 12 month contract in Toronto.

This is an onsite role.

Rate: $554.83 - $590.41

Advantages
• Earn a competitive rate within the industry.

• Location: Onsite role.

• Potential for extension.

Responsibilities
• Required to translate technical systems specifications into working, tested applications. This includes:

• developing detailed programming specifications

• writing and/or generating code

• compiling data-driven programs, maintaining, and conducting unit tests.

• Resolves and troubleshoots technical problems which arise during the use and operation of software packages, including technical assistance in implementation, conversion and migrations.

Qualifications
MUST HAVES:

Front‑End Web Development (React)

Strong proficiency in modern HTML5, CSS3, and responsive design
Experience with React using functional components and hooks
State management experience (e.g., Context API, Redux, or similar)
Familiarity with TypeScript, modular CSS (SCSS/SASS), React and component‑driven design
Experience integrating front‑end applications with RESTful and GraphQL APIs
Focus on performance optimization, accessibility, and cross‑browser compatibility
Google Analytics

Back‑End Development (.NET & Spring Boot)

Demonstrated experience building backend services using:
.NET / .NET Core (C#),such as MVC, Razor, Blazer and Azure Functions
Spring Boot (Java)
Strong understanding of object‑oriented design, SOLID principles, and design patterns
Experience developing RESTful APIs and/or GraphQL endpoints
Knowledge of authentication/authorization (OAuth2, JWT, identity providers)
Ability to design scalable, maintainable service architectures

API Design & Data Integration

Hands‑on experience designing, consuming, and integrating:
REST APIs
GraphQL schemas and resolvers
Experience with data contracts, DTOs, and API versioning
Understanding of synchronous vs asynchronous integrations
Familiarity with data integration and orchestration concepts

Databases & Data Services (Azure)

Strong working knowledge of Azure SQL Database
Experience with relational schema design, query optimization, and indexing
Familiarity with Azure Data Factory for data movement and transformation
Understanding of data pipelines, ETL/ELT concepts, and data reliability
Awareness of data security, access control, and performance considerations

DevOps & Source Control (Azure DevOps)

Proficiency with Git and branching strategies (e.g., GitFlow, trunk‑based development)
Experience using Azure DevOps for:
Repositories
Pull requests and code reviews
CI/CD pipelines
Familiarity with automated builds, testing, and deployment workflows
Understanding of environment promotion and release management

Standards, Security & Best Practices

Knowledge of WCAG accessibility standards, including WAI‑ARIA
Awareness of OWASP security principles and secure coding practices
Understanding of quality standards such as code reviews, testing, and documentation
Experience applying enterprise development standards and compliance requirements

Communication & Collaboration

Ability to clearly understand and follow technical requirements and instructions
Demonstrates effective verbal and written communication
Comfortable collaborating with cross‑functional teams (developers, QA, DevOps, stakeholders)
Able to document solutions and explain technical decisions clearly

Summary
If you are interested in the Senior Software Developer position in Toronto, please apply online at Qualified candidates will be contacted.

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 View email address on randstad.com to ensure their ability to fully participate in the interview process.

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