Posted last month
Senior Software Developer
@ Randstad Canada
Toronto, Ontario
SIGNALS
Overview
Randstad Canada is hiring a Senior Software Developer on a 10-month contract with possible extension, fully onsite in Toronto five days a week. The role covers full-stack .NET Core and C# development, RESTful API integration, consolidating legacy data sources, SQL Server and Oracle database work, and executive reporting dashboards. The posting requires 10+ years of hands-on .NET development experience.
Responsibilities:
- Design, develop, test and deploy .NET enterprise web applications and Web APIs
- Build secure RESTful web services for bidirectional data exchange
- Consolidate legacy data sources into unified platforms
- Write T-SQL and Oracle database objects, stored procedures and views
- Troubleshoot application errors and database performance issues
Requirements summary:
- 10+ years of hands-on .NET Core and C# development
- Extensive SQL Server and Oracle database experience
- Proven SOA, object-oriented design and UML modeling skills
- Experience designing and consuming RESTful Web APIs
- Hands-on Azure DevOps, TFS and Visual Studio experience
Tools & skills
Source and dates
Employer career site / ATS feed · careerpage
- Employer posting date
- 2026-10-05
- First seen by our source
- 2026-10-10
- Source record updated
- 2026-10-10
These dates describe the source record, not a live verification that the employer is still hiring. Check the original posting.
Job details
| Seniority | Senior |
| Department | Software development |
| Experience | 10+ years |
| Schedule | day |
| Travel | air: none · ground: none |
| Work setting | Office |
| Position | Mostly sitting |
| Physical demands | physical low · computer high |
| Languages | English |
| Encouraged to apply | Women, Indigenous peoples, People with disabilities, Racialized people, 2SLGBTQ+ |
Summary and details written by AI from the posting; the employer’s posting is the authority.
Randstad Canada
Saved company profile
Historical company information from a saved The Jobs API profile (LinkedIn/Crunchbase fields). It is not live-verified; figures may have changed. Missing values remain unknown.
partner for talent.
Full company description
As the Canadian leader in recruitment and HR, and one of Canada’s best places to work, we have a uniquely human approach to work. We deliver HR innovation with human interaction at its core. At the unique intersection of technology and humanity, we deliver data-driven insights coupled with a people-first experience that is inherently human. Human Forward. Learn more at www.randstad.ca.
- LinkedIn followers
- 455,966
- People associated on LinkedIn
- 1,207
- Reported office locations
- 777 Bay Street, Suite 2000, PO Box 128, Toronto, ON M5G 2C8, CA
- 525 Avenue Viger Ouest, Suite 501, Montréal, Quebec H2Z 1G6, CA
- 4295 King St E, Suite 401, Kitchener, Ontario N2P 0C6, CA
- 311 6 Ave SW, Intact Place, East Tower, Suite 1640, Calgary, AB T2P 3H2, CA
- 6345 Dixie Rd, Suite 6, Mississauga, ON L5T 2E6, CA
- 244 Pall Mall St, Suite 400, London, ON N6A 5P6, CA
- 4 Cedar Pointe Dr, Unit D, Barrie, Ontario L4N 5R7, CA
- 2456 Queen St E, Unit 201, Brampton, Ontario L6S 5X9, CA
- 10 Stanley St, Suite 4A, Brantford, Ontario N3S 7N4, CA
- 7055 Boulevard Taschereau, Suite 100, Brossard, Quebec J4Z 1A7, CA
- 1100 Walkers Line, Suite 105, Burlington, Ontario L7N 2G3, CA
- 10655 Southport Rd SW, Suite 1200, Calgary, Alberta T2W 4Y1, CA
- 495 36 St NE, Suite 140, Calgary, Alberta T2A 6K3, CA
- 321 6 Ave SW, Suite W940 (West Tower), Calgary, Alberta T2P 0B2, CA
- 415 Hespeler Rd, Unit 3A, Cambridge, Ontario N1R 6J1, CA
- 6001 60 Ave, Delta, British Columbia V4K 4E2, CA
- 787 Rue St-Pierre, Suite 303, Drummondville, Quebec J2C 3X2, CA
- 10025 102A Ave NW, Suite 1902, Edmonton, Alberta T5J 2Z2, CA
- 2305 111 St NW, Edmonton, Alberta T6J 5E5, CA
- 5 Boulevard Mountain, Granby, Quebec J2G 9M5, CA
- 450 Speedvale Ave W, Unit 103, Guelph, Ontario N1H 7Y6, CA
- 1809 Barrington St, CIBC Building, Unit 501, Halifax, Nova Scotia B3J 3K8, CA
- 275 James St N, Unit 2, Hamilton, Ontario L8R 2L4, CA
- 7655 Boulevard Newman, Suite 75, Montreal, Quebec H8N 1X7, CA
- 2530 Boulevard Daniel-Johnson, Laval, Quebec H7T 2R3, CA
- 2528 Boulevard Daniel-Johnson, Laval, Quebec H7T 2R3, CA
- 5410 Boulevard Guillaume-Couture, Suite 84, Lévis, Quebec G6V 4Z2, CA
- 460 Rue St-Charles O, Suite A, Longueuil, Quebec J4Z 1A7, CA
- 80 Tiverton Ct, Suite 400, Markham, Ontario L3R 0G4, CA
- 7357 Woodbine Ave, Suite 2, Markham, Ontario L3R 1A7, CA
- 4080 Confederation Pkwy, Suite 501, Mississauga, Ontario L5B 0G1, CA
- 6345 Dixie Rd, Suite 6, Mississauga, Ontario L5T 2E6, CA
- 809 Columbia St, New Westminster, British Columbia V3M 1B9, CA
- 20 York Mills Rd, Unit 208, Toronto, Ontario M2P 2C2, CA
- 1600 Carling Ave, Suite 410, Ottawa, Ontario K1Z 1G3, CA
- 2222 Carling Ave, Suite 2, Ottawa, Ontario K2A 1H3, CA
- 4810 Boul Saint-Jean, Montréal, Quebec H9H 4B2, CA
- 755 Boulevard Saint-Jean, Suite 130, Pointe-Claire, Quebec H9R 5M9, CA
- 815 Boulevard Lebourgneuf, Suite 201, Québec, Québec G2J 0C1, CA
- 2010 11th Ave, 7th Floor, Regina, Saskatchewan S4P 0J3, CA
- 208 Boulevard du Curé-Labelle, Sainte-Thérèse, Quebec J7E 2X7, CA
- 3500 Boulevard de la Côte-Vertu, Suite 175, Saint-Laurent, Quebec H4R 2X7, CA
- 6335 Rue Jean-Talon Est, Saint-Léonard, Quebec H1S 3E7, CA
- 310 Wall St, Saskatoon, Saskatchewan S7K 1N7, CA
- 124 Rue Wellington Nord, Suite 300, Sherbrooke, Quebec J1H 5X8, CA
- 701 W Georgia St, Suite 200, Vancouver, British Columbia V7Y 1C6, CA
- 730 View St, Suite 420, Victoria, British Columbia V8W 3Y7, CA
- 100 Regina St S, Suite 140, Waterloo, Ontario N2J 4P9, CA
- 114 Dundas St E, Unit 103, Whitby, Ontario L1N 2H7, CA
- 245 Portage Ave, Winnipeg, Manitoba, CA
- 1 Lombard Pl, Suite 1535, Winnipeg, Manitoba R3B 0X3, CA
- 386 Boulevard Charest E, Quebec, QC G1K 3H4, CA
- Other recorded names
- Randstad Canada
- Specialties
- HR Consulting
- IT Recruitment
- Engineering Recruitment
- Staffing and HR
- HR Services
- Recruitment
- HR Outsourcing
- Temporary Hiring
- Permanent Hiring
- Recruiting
- Permanent Jobs
- Temp Jobs
- Hiring Strategy
- Human Resources
- Staffing
- Finding Jobs
- Employer Branding
- Jobs
- and Contract Jobs
- Profile identifies a recruitment agency
- Yes
As the Canadian leader in recruitment and HR, and one of Canada’s best places to work, we have a uniquely human approach to work. We deliver HR innovation with human interaction at its core. At the unique intersection of technology and humanity, we deliver data-driven insights coupled with a people-first experience that is inherently human. Human Forward. Learn more at www.randstad.ca.
| Field | Value |
|---|---|
| Industry | Staffing and Recruiting |
| Company size | 501-1,000 employees |
| Headquarters | Toronto, ON |
| Organization type | Public Company |
| Year founded | 1997 |
| Specialties | HR ConsultingIT RecruitmentEngineering RecruitmentStaffing and HRHR ServicesRecruitmentHR OutsourcingTemporary HiringPermanent HiringRecruiting |
| Open jobs on Jobsy | 9,353 |
| View page |
Job description
We are seeking a highly accomplished Senior Software Developer for an enterprise-level contract opportunity based in Toronto. In this role, you will take on a premier full-stack software development, system architecture, and database engineering capacity, specializing in designing, enhancing, and consolidating complex data platforms and web applications.
As a Senior Software Developer, you will bridge the gap between legacy software frameworks, modern web interfaces, RESTful Web APIs, and centralized relational database systems. Operating fully onsite in Toronto, you will lead end-to-end software design, build secure API integrations, consolidate disparate legacy data sources, and develop executive reporting dashboards and analytics services. This position demands a technical software authority with extensive tenure in .NET Core, C#, VB.NET, SQL Server, and Service-Oriented Architecture (SOA) who can design scalable solutions aligned with enterprise architecture patterns.
Location: Toronto, ON
Assignment Type: Onsite (5 days per week)
Contract Duration: 10-month contract (with potential for extension)
Advantages
Modern .NET Core Ecosystem: Lead full-stack engineering across .NET Core, C#, ASP.NET MVC, Web APIs, and Entity Framework.
Platform & Data Consolidation: Drive complex system integrations, database consolidations, and multi-system data pipeline architecture.
Analytics & Executive Reporting: Build advanced reporting services, data visualization dashboards, and operational metrics engines.
Enterprise SDLC & DevOps: Work with modern engineering tools including Visual Studio, Azure DevOps, TFS, and DevExpress controls.
Responsibilities
Design, develop, test, and deploy enterprise web applications, Web APIs, and background services using .NET Core, C#, VB.NET, and ASP.NET MVC.
Architect and implement secure RESTful Web Services and application interfaces to enable seamless, bidirectional data exchange between enterprise systems.
Consolidate legacy data sources into unified platforms to improve data quality, analytics performance, reporting consistency, and system interoperability.
Develop automated data pipelines, backend APIs, and executive dashboard functionality to support workload analytics and performance reporting.
Design, build, and optimize relational database objects in Microsoft SQL Server and Oracle, writing complex T-SQL queries, stored procedures, triggers, and views.
Perform data migration planning, extraction, transformation, mapping, and validation across multi-tier application environments.
Support the development of conceptual, logical, and physical architecture artifacts in alignment with enterprise architecture standards.
Troubleshoot, debug, and resolve complex application errors, database bottlenecks, and performance issues in a timely manner.
Manage code repositories, automated build pipelines, and sprint backlogs using Azure DevOps, Team Foundation Server (TFS), and Visual Studio.
Author comprehensive technical specifications, database diagrams (UML, Use Cases, Class/Component Diagrams), and deployment runbooks.
Qualifications
Core Technical & Software Development Requirements
.NET Core & C# Mastery: Minimum 10+ years of hands-on software development experience using .NET Core, C#, VB.NET, ASP.NET MVC, Identity, JavaScript, jQuery, and XML/XSLT.
Enterprise .NET Libraries: Strong experience building applications with WCF, WPF, MS Sync Framework, Web Services, Entity Framework, Enterprise Library, and DevExpress.
Database Programming & Migration: Extensive experience with Microsoft SQL Server, T-SQL, stored procedures, functions, triggers, and Oracle RDBMS data modeling and migration.
Architecture & API Design: Proven experience in Service-Oriented Architecture (SOA), object-oriented design, UML modeling, and designing/consuming RESTful Web APIs.
DevOps & Infrastructure: Hands-on experience with Visual Studio, Azure DevOps, Team Foundation Server (TFS), Windows Server environments, and middleware/gateways.
Preferred Technical Assets
UI & Reporting Components: Experience utilizing DevExpress UI controls, web client frameworks, and data visualization tools.
Cloud & Security Protocols: Familiarity with cloud development practices, communications protocols, and secure authentication frameworks.
Soft Skills & Delivery Attributes
Analytical Problem Solving: Superior diagnostic and troubleshooting skills to resolve multi-tier technical defects and complex data synchronization issues.
Communication & Collaboration: Excellent verbal and written communication skills with a proven track record of working effectively within cross-functional technical teams.
Summary
If you're interested in the "Senior Software Developer" 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 [email protected] to ensure their ability to fully participate in the interview process.
This posting is for existing and upcoming vacancies.
As a Senior Software Developer, you will bridge the gap between legacy software frameworks, modern web interfaces, RESTful Web APIs, and centralized relational database systems. Operating fully onsite in Toronto, you will lead end-to-end software design, build secure API integrations, consolidate disparate legacy data sources, and develop executive reporting dashboards and analytics services. This position demands a technical software authority with extensive tenure in .NET Core, C#, VB.NET, SQL Server, and Service-Oriented Architecture (SOA) who can design scalable solutions aligned with enterprise architecture patterns.
Location: Toronto, ON
Assignment Type: Onsite (5 days per week)
Contract Duration: 10-month contract (with potential for extension)
Advantages
Modern .NET Core Ecosystem: Lead full-stack engineering across .NET Core, C#, ASP.NET MVC, Web APIs, and Entity Framework.
Platform & Data Consolidation: Drive complex system integrations, database consolidations, and multi-system data pipeline architecture.
Analytics & Executive Reporting: Build advanced reporting services, data visualization dashboards, and operational metrics engines.
Enterprise SDLC & DevOps: Work with modern engineering tools including Visual Studio, Azure DevOps, TFS, and DevExpress controls.
Responsibilities
Design, develop, test, and deploy enterprise web applications, Web APIs, and background services using .NET Core, C#, VB.NET, and ASP.NET MVC.
Architect and implement secure RESTful Web Services and application interfaces to enable seamless, bidirectional data exchange between enterprise systems.
Consolidate legacy data sources into unified platforms to improve data quality, analytics performance, reporting consistency, and system interoperability.
Develop automated data pipelines, backend APIs, and executive dashboard functionality to support workload analytics and performance reporting.
Design, build, and optimize relational database objects in Microsoft SQL Server and Oracle, writing complex T-SQL queries, stored procedures, triggers, and views.
Perform data migration planning, extraction, transformation, mapping, and validation across multi-tier application environments.
Support the development of conceptual, logical, and physical architecture artifacts in alignment with enterprise architecture standards.
Troubleshoot, debug, and resolve complex application errors, database bottlenecks, and performance issues in a timely manner.
Manage code repositories, automated build pipelines, and sprint backlogs using Azure DevOps, Team Foundation Server (TFS), and Visual Studio.
Author comprehensive technical specifications, database diagrams (UML, Use Cases, Class/Component Diagrams), and deployment runbooks.
Qualifications
Core Technical & Software Development Requirements
.NET Core & C# Mastery: Minimum 10+ years of hands-on software development experience using .NET Core, C#, VB.NET, ASP.NET MVC, Identity, JavaScript, jQuery, and XML/XSLT.
Enterprise .NET Libraries: Strong experience building applications with WCF, WPF, MS Sync Framework, Web Services, Entity Framework, Enterprise Library, and DevExpress.
Database Programming & Migration: Extensive experience with Microsoft SQL Server, T-SQL, stored procedures, functions, triggers, and Oracle RDBMS data modeling and migration.
Architecture & API Design: Proven experience in Service-Oriented Architecture (SOA), object-oriented design, UML modeling, and designing/consuming RESTful Web APIs.
DevOps & Infrastructure: Hands-on experience with Visual Studio, Azure DevOps, Team Foundation Server (TFS), Windows Server environments, and middleware/gateways.
Preferred Technical Assets
UI & Reporting Components: Experience utilizing DevExpress UI controls, web client frameworks, and data visualization tools.
Cloud & Security Protocols: Familiarity with cloud development practices, communications protocols, and secure authentication frameworks.
Soft Skills & Delivery Attributes
Analytical Problem Solving: Superior diagnostic and troubleshooting skills to resolve multi-tier technical defects and complex data synchronization issues.
Communication & Collaboration: Excellent verbal and written communication skills with a proven track record of working effectively within cross-functional technical teams.
Summary
If you're interested in the "Senior Software Developer" 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 [email protected] to ensure their ability to fully participate in the interview process.
This posting is for existing and upcoming vacancies.
Journal
Only you can see this. Kept on this device, and in your account when you sign in.