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8 results for Senior Software Developer in Toronto, ON

CAN - Software Developer: III (Senior)
  • Mississauga, ON
  • remote
  • Temporary
  • 45.00 - 60.00 CAD / Hourly
  • Our client is seeking an experienced Software Developer to support and enhance existing NPC applications. This role involves a mix of application development, configuration updates, and database work, with a strong emphasis on hands-on coding and SQL Server development. The ideal candidate is technically strong, analytical, and comfortable working both independently and as part of a collaborative team. <br> This is an active contract to permanent opportunity with a pay range of $45 - $60/hour (CAD) and a hybrid schedule (3 days onsite in downtown Toronto). <br> Key Responsibilities Develop and maintain NPC applications through: Application code changes Configuration updates Database changes and stored procedure development Perform approximately 70% application development and 30% database work Write, modify, and optimize SQL Server stored procedures Collaborate with team members to analyze requirements and troubleshoot issues Ensure high-quality, maintainable, and well-documented code Participate in code reviews and version control practices <br> Must-Have Qualifications (4+ years) Strong experience with C# (7.0) Hands-on experience with ASP.NET WebForms (Framework 4.7) Strong SQL skills Experience with SQL Server 2019, including stored procedures Familiarity with GitHub or other version control systems Strong analytical and problem-solving skills Ability to work both independently and collaboratively Excellent verbal and written communication skills <br> Good-to-Have Qualifications (3+ years) Experience with AWS Experience building or consuming Web APIs Knowledge of XML Exposure to React.js Strong JavaScript skills Nice-to-Have System or application integration experience Relevant technical certifications This posting represents a current vacancy with our client. If this opportunity aligns with your experience, I’d be happy to connect and discuss further.   Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster.
  • 2026-02-05T17:04:26Z
Full Stack Software Developer
  • Vaughan, ON
  • remote
  • Temporary
  • 75.00 - 95.00 CAD / Hourly
  • We are looking for an experienced Full Stack Software Developer to join our team in Vaughan, Ontario. In this long-term contract role, you will play a crucial part in building, enhancing, and scaling a robust internal operating system for a civil construction company. This position offers the opportunity to work on a well-defined system architecture and contribute to impactful solutions in the construction industry.<br><br>Responsibilities:<br>• Develop and maintain both front-end and back-end components of a comprehensive operating system.<br>• Implement business logic, data models, and integrations based on pre-defined system architecture.<br>• Collaborate with stakeholders to ensure seamless workflows for field operations, equipment management, and compliance documentation.<br>• Troubleshoot and resolve technical issues, ensuring system reliability and performance.<br>• Utilize tools such as Atlassian Jira and GitHub for project management and version control.<br>• Write clean, efficient code using programming languages such as C++, JavaScript, and Java.<br>• Design user interfaces with CSS and React to ensure an intuitive user experience.<br>• Conduct rigorous testing and debugging to identify and fix bugs.<br>• Integrate third-party platforms and accounting systems to enhance functionality.<br>• Provide detailed reporting and executive dashboards to support decision-making processes.
  • 2026-02-03T20:28:45Z
Back End Developer
  • Mississauga, ON
  • remote
  • Temporary
  • 45.00 - 65.00 CAD / Hourly
  • <p>We are looking for a Senior Backend Developer to join a growing engineering team focused exclusively on building a new, enterprise-grade product. This is a product-only role (no client delivery or consulting work), where you’ll play a key part in translating architectural vision into robust, production-ready backend services. If you have the below requirements, please apply today!</p><p><br></p><p>What You’ll Do</p><ul><li>Implement backend services under architectural guidance, contributing to foundational platform components</li><li>Build scalable, cloud-native services following established patterns, standards, and best practices</li><li>Develop calculation-heavy, deterministic business logic with a strong emphasis on correctness and repeatability</li><li>Design and optimize data pipelines and processing workflows</li><li>Maintain a high bar for code quality, testing, performance, and reliability</li><li>Collaborate closely with the Principal Architect on technical design decisions and implementation strategies</li><li>Write and maintain comprehensive unit and integration tests to support auditability and long-term maintainability</li></ul><p><br></p><p>Key Challenges You’ll Tackle</p><ul><li>Developing financial-grade, audit-sensitive systems</li><li>Handling complex data processing and transformation pipelines</li><li>Building performance-critical, deterministic logic</li><li>Creating foundational backend services that scale to enterprise-level customers</li></ul><p><br></p><p>Required Skills & Experience</p><p>Backend Development</p><ul><li>3–8+ years of experience in backend software development</li><li>Strong proficiency in .NET / C# (required)</li><li>Experience with strongly-typed, compiled languages</li></ul><p>Frameworks & APIs</p><ul><li>ASP.NET Core</li><li>Entity Framework Core</li><li>Background workers and async processing pipelines</li><li>RESTful API design and implementation</li></ul><p>Databases</p><ul><li>Strong experience with relational databases such as SQL Server / Azure SQL or PostgreSQL</li><li>Solid understanding of query optimization, indexing, and performance tuning</li></ul><p>Cloud & Engineering Practices</p><ul><li>Cloud-native development experience (Azure strongly preferred)</li><li>Experience building and supporting data pipelines</li><li>Strong testing discipline (unit, integration)</li><li>Performance profiling and optimization experience</li></ul><p>Nice to Have</p><ul><li>Message queues and asynchronous messaging</li><li>Docker and containerized workloads</li><li>CI/CD pipelines</li><li>Event-driven architectures</li></ul><p><br></p><p>*This job posting is for a current vacancy with our client.</p><p>*Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster.</p><p><br></p>
  • 2026-01-16T19:28:57Z
Jr. Product Owner
  • Toronto, ON
  • onsite
  • Temporary
  • 30.00 - 35.00 CAD / Hourly
  • <p>We are seeking a motivated and detail-oriented Product Owner / Digital Project Coordinator to support product development and project execution for our client on an 11-month contract. This role is ideal for someone early in their product, business, or analytics career who enjoys working cross-functionally, staying organized, and using data to support decision-making.</p><p>The successful candidate will work closely with senior Product Owners, engineering, design, business stakeholders, and operations teams to ensure timely delivery of product initiatives and smooth day-to-day project coordination.</p><p><br></p><p>Responsibilities:</p><p><strong>Product Ownership Support</strong></p><ul><li>Assist senior Product Owners in defining product requirements, user stories, and acceptance criteria</li><li>Maintain and help prioritize the product backlog under guidance Participate in sprint planning, sprint reviews, and retrospectives</li><li>Translate business needs into clear, actionable requirements for development teams Support product documentation and roadmap updates</li></ul><p><strong>Project Coordination</strong></p><ul><li>Coordinate day-to-day project activities across teams and stakeholders</li><li>Track project timelines, milestones, dependencies, and deliverables</li><li>Follow up on action items and ensure tasks are completed on schedule Identify risks, issues, and blockers, and escalate when necessary</li><li>Prepare and distribute project status reports and meeting notes</li><li>Support communication between product, technology, business, and external teams</li></ul><p><strong>Data Analysis & Reporting</strong></p><ul><li>Collect, clean, and analyze product, project, or business data</li><li>Create dashboards, reports, and basic visualizations to track progress and performance Analyze user behavior, feature usage, and operational metrics</li><li>Provide data-driven insights to support decision-making Assist in defining KPIs and success metrics for product initiatives</li></ul>
  • 2026-02-02T20:00:50Z
Cloud Engineer
  • Toronto, ON
  • onsite
  • Permanent
  • 120000.00 - 140000.00 CAD / Yearly
  • <p>Robert Half is partnering with a leading technology-driven organization to recruit an accomplished Cloud Engineer. This is an excellent opportunity to leverage your deep cloud expertise in a dynamic environment, working on next-generation infrastructure and automation initiatives.</p><p> </p><p><strong>Responsibilities:</strong></p><ul><li>Design, deploy, and manage cloud infrastructure across AWS and Azure platforms, ensuring scalability, security, and resilience.</li><li>Oversee data storage, networking, and cybersecurity within cloud ecosystems.</li><li>Implement and optimize containerized applications utilizing orchestration technologies like Kubernetes.</li><li>Establish and enforce robust security controls, maintain compliance with industry standards, and manage risk throughout the development lifecycle.</li><li>Manage and support database operations using AWS/Azure managed database services.</li><li>Build and maintain Infrastructure as Code (IaC) using tools such as Terraform and Ansible.</li><li>Develop, maintain, and enhance CI/CD pipelines with platforms including Jenkins and GitHub Actions.</li><li>Advance monitoring, alerting, and observability using enterprise tools such as Dynatrace, Splunk, and Datadog.</li><li>Automate manual processes with advanced scripting in Python and Bash.</li></ul>
  • 2026-02-04T19:38:40Z
Application Operations Engineer
  • Toronto, ON
  • onsite
  • Permanent
  • 140000.00 - 155000.00 CAD / Yearly
  • <p>We are seeking an experienced Site Reliability Engineer (SRE) to join our client’s growing team. The ideal candidate will have a strong background in managing and optimizing application environments across Classic Cloud, AWS, and Azure, with experience in Java-based applications, Middleware technologies, and Monitoring tools. This role requires a proactive professional who can ensure high availability, performance, and security of mission-critical applications while adhering to industry standards such as ITIL and ISO8583.</p><p>---</p><p>Key Responsibilities</p><p>· Application Operations & Maintenance</p><p>o Manage and support application environments across Classic Cloud, AWS, and Azure platforms.</p><p>o Perform deployments, upgrades, and patching for Java-based applications and middleware components.</p><p>· Monitoring & Incident Management</p><p>o Implement and maintain monitoring solutions to ensure application health and performance.</p><p>o Respond to incidents promptly, perform root cause analysis, and implement corrective actions.</p><p>· Middleware & Integration</p><p>o Configure and maintain middleware platforms (e.g., WebSphere, JBoss, or similar).</p><p>o Ensure seamless integration between applications and payment systems using ISO8583 standards.</p><p>· Compliance & Best Practices</p><p>o Apply ITIL principles for incident, problem, and change management.</p><p>o Ensure compliance with security and regulatory standards across all environments.</p><p>· Collaboration & Documentation</p><p>o Work closely with development, infrastructure, and security teams to optimize application performance.</p><p>o Maintain detailed documentation for operational procedures and configuration</p><p><br></p>
  • 2026-01-15T21:38:50Z
Applications Architect
  • Mississauga, ON
  • remote
  • Temporary
  • 80.75 - 93.50 CAD / Hourly
  • <p>We are looking for a highly experienced Backend / Software Architect to define and own the architecture of a next-generation, financial-grade software platform being built from the ground up. This is a hands-on, high-impact role for someone who thrives in designing complex, deterministic systems and enjoys creating original architectural blueprints rather than maintaining legacy solutions.</p><p><br></p><p>You will work closely with the founder and product leadership to shape the technical vision, make foundational technology decisions, and build systems that are scalable, auditable, and production-ready from day one. Fully remote contract role.</p><p><br></p><p><strong>Key Responsibilities</strong></p><p><br></p><p>Define, own, and evolve the overall system architecture for a greenfield platform</p><p>Select, evaluate, and lock in the technology stack and architectural patterns</p><p>Design deterministic, calculation-heavy, financial-grade systems with auditability and correctness as first-class concerns</p><p>Establish architectural standards, invariants, non-goals, and clearly defined failure modes</p><p>Partner closely with the founder and product team to translate product vision into technical design and execution</p><p>Provide architectural guidance across implementation, ensuring scalability, performance, reliability, and maintainability</p><p><br></p><p><br></p><p><strong>Required Qualifications</strong></p><p><br></p><p>10+ years of backend engineering experience, with 3+ years in an architecture or principal-level role</p><p>Strong proficiency in .NET / C# (required); experience with other strongly typed languages is a plus</p><p>Deep experience with ASP.NET Core, Entity Framework Core, and distributed .NET architectures</p><p>Strong relational database expertise with SQL Server / Azure SQL or PostgreSQL, including data modeling and transaction management</p><p>Proven experience designing distributed systems, deterministic processing pipelines, and complex business rule engines</p><p>Strong understanding of cloud-native architecture, with Azure strongly preferred</p><p>Solid grasp of design patterns, system invariants, and scalability principles</p><p><br></p><p><br></p><p><strong>Nice-to-Have Experience</strong></p><p><br></p><p>Workflow engines (e.g., Temporal)</p><p>Messaging and event systems (Azure Service Bus, Kafka)</p><p>Docker and Kubernetes</p><p>Event-driven architectures or event sourcing</p><p>CI/CD pipelines and modern DevOps practices</p><p><br></p><p><br></p><p>*This job posting is for a current vacancy with our client.</p><p><br></p><p>*Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster.</p>
  • 2026-01-16T20:14:00Z
CAN - Full Stack Developer: II (Intermediate)
  • Caledon, ON
  • remote
  • Temporary
  • 25.00 - 35.00 CAD / Hourly
  • <p>We are looking for an experienced Full Stack Developer to join our team in Mississauga, Ontario. This long-term contract position offers an opportunity to work on innovative internal web applications, primarily within the finance and HR/payroll domains. The ideal candidate will be responsible for both frontend and backend development, collaborating with business analysts and other team members to deliver high-quality solutions.</p><p><br></p><p>Responsibilities:</p><p>• Develop and maintain internal web applications, focusing on finance and HR/payroll-related projects.</p><p>• Balance frontend and backend development tasks, ensuring seamless integration and functionality.</p><p>• Collaborate with business analysts to test and refine applications, ensuring they meet business requirements.</p><p>• Build and enhance applications using Power Apps and Power BI to support organizational needs.</p><p>• Write, test, and optimize code using C#, .NET, SQL, and Blazor frameworks.</p><p>• Participate in team meetings and provide technical input to improve project outcomes.</p><p>• Conduct AB testing to validate application performance and user experience.</p><p>• Ensure applications are scalable, secure, and aligned with organizational expectations.</p><p>• Troubleshoot and resolve technical issues promptly to minimize disruptions.</p><p>• Document development processes and maintain clear communication with stakeholders.</p>
  • 2026-01-12T16:13:56Z