Senior Full Stack Developer (.Net Technology Stack)

BDO Canada LLP; Toronto; Hybrid; CAD 110,000 - 160,000; Full time

Job summary

BDO Canada is seeking a skilled Full Stack Developer for a hybrid role in downtown Toronto. You will design, develop, and maintain multi‑tier applications using C#, VB.NET, ASP.NET MVC and Webforms, with exposure to Java or Python, collaborating with cross‑functional teams to deliver secure, scalable software.

You will create and consume RESTful APIs, optimize database queries on SQL Server and Sybase, and contribute to performance tuning, code reviews, and clear technical documentation.

Qualifications

• Experience building multi‑tier applications with .NET stack (C#, VB.NET, MVC, Webforms).
• Exposure to Java and/or Python is preferred.
• Proficient in relational databases such as SQL Server or Sybase and REST APIs.

Responsibilities

• Design, develop, and maintain multi‑tier web applications using .NET technologies (C#, VB.NET, ASP.NET MVC, Webforms).
• Implement and integrate front‑end, back‑end, and database components for performance and security.
• Create and consume RESTful APIs to support integration with external services.
• Collaborate with Backend, QA, DevOps to deliver end‑to‑end solutions.
• Develop and optimize queries, stored procedures, and triggers in SQL Server and Sybase.
• Monitor performance, tune and troubleshoot for data integrity and efficiency.
• Use Java or Python for specialized tasks or microservices as needed.
• Follow coding standards, code reviews, and source code management practices.
• Produce clear technical documentation and system diagrams.

Skills

C#

VB.NET

ASP.NET MVC

Webforms

REST APIs

Java

Python

SQL Server

Sybase

Security best practices

Tools

SQL Server

Sybase

Job description

Putting people first, every day BDO is a firm built on a foundation of positive relationships with our people and our clients. Each day, our professionals provide exceptional service, helping clients with advice and insight they can trust. In turn, we offer an award‑winning environment that fosters a people‑first culture with a high priority on your personal and professional growth.

Your Opportunity

We are seeking a skilled Full Stack Developer with strong expertise in the Microsoft .NET technology stack for a hybrid role in downtown Toronto. The ideal candidate will have hands‑on experience building multi‑tier applications in C#, VB.NET, ASP.NET MVC, and webforms, along with exposure to Java or Python. In this role, you will design, develop, and maintain robust solutions, collaborating closely with cross‑functional teams to ensure high‑quality, secure, and scalable software.

Roles and responsibilities

• Design, develop, and maintain multi‑tier web applications using .NET technologies (C#, VB.NET, ASP.NET MVC, Webforms).
• Implement and integrate front‑end, back‑end, and database components, ensuring optimal performance and security.
• Create and consume RESTful APIs to support integration with external services and partner systems.
• Collaborate with cross‑functional teams (Backend, QA, DevOps) to deliver end‑to‑end solutions that align with business requirements.
• Develop and optimize queries, stored procedures, and triggers in relational databases (e.g., Sybase, SQL Server).
• Perform database monitoring, performance tuning, and troubleshooting to ensure data integrity and system efficiency.
• Leverage Java or Python to facilitate specialized tasks, integrations, or microservices as needed.
• Adhere to professional software engineering practices including coding standards, code reviews, and source code management.
• Conduct performance profiling and implement optimizations at both the code and database levels.
• Produce technical documentation such as system architecture diagrams, technical specifications, and user guides.

How do we define success for your role?

You demonstrate BDO's core values through all aspect of your work: Integrity, Respect and Collaboration You understand your client's industry, challenges, and opportunities; clients describe you as positive, professional, and delivering high‑quality work You identify, recommend, and are focused on effective service delivery to your clients You share in an inclusive and engaging work environment that develops, retains & attract talent You actively participate in the adoption of digital tools and strategies to drive an innovative workplace You grow your expertise through learning and professional development.

Your experience and education

• Strong programming experience in multi‑tier applications based on Microsoft .NET technology stack including C#, VB.NET, MVC, Webforms, Web Services, REST API's
• Experience developing in Java and/or Python
• Experience with relational database programming (e.g. Sybase, SQL Server)
• Experience working within professional software engineering practices for the full software development life cycle, including coding standards, code reviews, source code management, build processes and testing
• Experience with .NET based server‑side technologies and creating/consuming from a REST backend.

Why BDO?

Our people‑first approach to talent has earned us a spot among Canada’s Top 100 Employers for 2026. This recognition is a milestone we’re thrilled to add to our collection of awards for both experienced and student talent experiences. At BDO, our people experience is guided by three core pillars-Do work with genuine care, Do what matters with purpose, and Do what's next - shaping how we support our people, serve our clients, and grow together. Our firm is committed to providing an environment where you can be successful in the following ways: We enable you to engage with how we change and evolve, being a key contributor to the success and growth of BDO in Canada. We help you become a better professional within our services, industries, and markets with extensive opportunities for learning and development. We support your achievement of personal goals outside of the office and making an impact on your community. We foster a collaborative, inclusive environment where your ideas are valued, and you can do your best work with genuine care and purpose We encourage innovation and forward thinking, empowering you to embrace what's next and help shape the future of our firm Giving back adds up: Where company meets community. BDO is actively involved in our communities by supporting local charity initiatives. We support staff with local and national events where you will be given the opportunity to contribute to your community.

Flexibility

All BDO personnel are expected to spend some of their time working in the office, at the client site, and virtually unless accommodations or alternative work arrangements are in place. Our model is a blended approach designed to support the flexible needs of our people, the firm and our clients. It's about creating work experiences that meet everyone's needs and providing flexibility to adjust when, where and how we work to meet the expectations of our role.

Code of Conduct

Our Code of Conduct sets clear standards for how we conduct business. It reflects our shared values and commitments and includes guiding principles to help us make ethical decisions and maintain trust with each other, our clients, and the public. BDO may use artificial intelligence enabled tools to support certain aspects of the recruitment process. While these tools assist our teams, our use of AI does not replace human decision making, and all employment-related outcomes are made by BDO personnel. More information on BDO Canada's Privacy Policy can be found here: Privacy Policy | BDO Canada

If you require accommodation to complete the application process, please contact us.

Ready to make your mark at BDO?

When it comes to our people, we believe in helping you unlock possibilities, build your passions, and grow your competitive edge. From our expansive client base to growing talent pool, our people are the core of BDO. Our multi-award winning talent experience continues to make us proud. Our culture is open and collaborative. We foster inclusive ways to thinking and celebrate diversity among all contributors. We respect each other, do all things with integrity, and support our people to be their most authentic selves.