Senior Full Stack Developer - Permanent - 19536

LRO Staffing; Mississauga; Hybrid; CAD 110,000 - 120,000; Full time

Benefits offered by this job

Flex Time

Strong benefits

Hybrid work

Job summary

LRO Staffing is seeking a Senior Full Stack Developer to join our engineering team. You will design, develop, and maintain full-stack web applications using a modern .NET-based stack, with emphasis on Blazor UI and Azure-based services.

You'll work across legacy Classic ASP codebases and modern cloud-native architectures, collaborate with product and design, mentor junior developers, and help shape engineering standards while delivering high-impact solutions.

Qualifications

• 5+ years of professional software development experience with a strong full-stack background.
• Ability to work with legacy codebases and modern architectures while staying collaborative.
• Strong communication skills to explain technical decisions to non-technical stakeholders.
• Team-first attitude with ownership and accountability.
• Curiosity and commitment to continuous learning.

Responsibilities

• Design, develop, and maintain full-stack web applications using a modern .NET-based stack.
• Work with Classic ASP codebases—maintaining, refactoring, and migrating legacy systems where appropriate.
• Build rich, responsive user interfaces using Blazor (WebAssembly and/or Server).
• Develop and maintain RESTful APIs and backend services using .NET Core.
• Write efficient, well-structured database queries and manage schemas in SQL Server/Azure SQL.
• Architect and implement Azure Microservices to support scalable, resilient application design.
• Collaborate closely with product, design, and other engineering stakeholders throughout the development lifecycle.
• Participate in code reviews, technical discussions, and contribute to setting engineering standards.
• Mentor junior developers and share knowledge across the team.
• Troubleshoot production issues and own resolution end-to-end.

Skills

Full-stack development

ASP/Blazor

Azure/Azure SQL

REST APIs

SQL Server

Legacy refactoring

Mentoring

Communication

Tools

ASP Classic

Azure

SQL Server

Job description

About The Opportunity

We're looking for a talented and experienced Senior Full Stack Developer to join our growing engineering team. This isn't just another job, it's a chance to work on meaningful products, tackle interesting technical challenges, and genuinely shape the direction of our software. You'll be working across the full stack, from classic web technologies to modern cloud-native architectures, so breadth and adaptability are key.

About The Opportunity

We're looking for a talented and experienced Senior Full Stack Developer to join our growing engineering team. This isn't just another job, it's a chance to work on meaningful products, tackle interesting technical challenges, and genuinely shape the direction of our software. You'll be working across the full stack, from classic web technologies to modern cloud-native architectures, so breadth and adaptability are key.

If you're someone who loves solving hard problems, takes pride in clean and maintainable code, and thrives in a collaborative environment, we'd love to hear from you.

Duties include but are not limited to:

• Design, develop, and maintain full-stack web applications using a modern .NET-based technology stack
• Work with Classic ASP codebases — maintaining, refactoring, and migrating legacy systems where appropriate
• Build rich, responsive user interfaces using Blazor (WebAssembly and/or Server)
• Develop and maintain RESTful APIs and backend services using .NET Core
• Write efficient, well-structured database queries and manage schemas in SQL Server/Azure SQL
• Architect and implement Azure Microservices to support scalable, resilient application design
• Collaborate closely with product, design, and other engineering stakeholders throughout the development lifecycle
• Participate in code reviews, technical discussions, and contribute to setting engineering standards
• Mentor junior developers and share knowledge across the team
• Troubleshoot production issues and own resolution end-to-end

About You

Beyond the tech, we care about who you are as a developer and teammate.

• 5+ years of professional software development experience, with a strong full-stack background
• Comfortable navigating both legacy codebases and modern architectures without losing your mind (or your sense of humour)
• Strong communication skills, you can explain technical decisions to non-technical stakeholders
• A collaborative, team-first attitude. We build things together here
• Self-motivated and ownership-oriented, you see things through to completion
• Curiosity and a commitment to continuous learning

About the Job

• Competitive salary, $110,000 to $120,000/year
• Hybrid - 3 days a week in Bolton
• Working with a great leader
• Flex Time and strong benefits

LROIT