Apply on Kit Job: kitjob.ca/job/2fsitx

Full Stack Developer (Legacy & Modernization)

Department: Product

Employment Type: Permanent - Full Time

Location: Canada

Description

At OnePlan, we specialize in creating AI-enabled solutions that make strategic portfolio, financial, resource, and work management seamless. We help businesses bridge the gap between strategy and execution by offering solutions that boost business agility, streamline project management, and optimize resources.

What You’ll Do at OnePlan

As a Full Stack Developer, you’ll work across a mix of legacy and modern technologies, supporting existing applications while building new functionality as part of an ongoing transition to a more modern, Azure-based architecture. You’ll play a hands‑on role in both stability and forward‑looking development.

- Design and build product features across a suite of platforms, balancing work between legacy WebForms components and newer development in .NET 10 Blazor
- Support the transition of applications toward an Azure-based architecture, contributing to both design decisions and hands‑on implementation
- Work with SQL Server using T‑SQL to build, optimize, and maintain performant data structures and queries
- Collaborate closely with Product, UX, and other members of the team to translate requirements into clean, scalable solutions
- Contribute to DevOps practices, including CI/CD pipelines, deployments, and improving overall development workflows
- Maintain and improve existing code, with a focus on stability, performance, and gradual modernization
- Participate in code reviews and team discussions to keep quality high and approaches consistent
- Troubleshoot and resolve issues across the stack, from UI through to database

Our Ideal Fit

- 3 to 5 years of experience building SaaS or enterprise web applications
- Strong experience with C# and .NET across both legacy and modern frameworks
- Hands‑on experience with WebForms and an understanding of how to work within and modernize legacy systems




- Experience building modern web applications using Blazor or similar frameworks
- Solid experience with SQL Server, including writing and optimizing T‑SQL queries
- Experience working with Azure, or a strong understanding of cloud‑based application design
- Exposure to DevOps practices, including working with pipelines, deployments, and version control
- Comfortable working across the full stack, with a heavier focus on front‑end experience (around 70% front‑end)
- Experience working in Agile environments and collaborating with cross‑functional teamsStrong problem‑solving skills and the ability to work through ambiguity without needing a lot of direction
- Transparent communicator who can work well with both technical and non‑technical stakeholders

- Experience contributing to or leading modernization efforts from legacy to cloud‑based architectures
- Familiarity with Microsoft ecosystem tools (Azure DevOps, Office 365 integrations, etc.)
- Exposure to AI‑enabled product features or data‑driven applications

Benefits

- We’re a remote‑first company with team members across the USA, Canada, UK, and India!
- OnePlan has been recognized as the Global Microsoft Partner of the Year in Project Portfolio Management in 2019, 2020, 2021, 2022 and 2023.
- We’ve been named a "Strong Performer" in the latest Forrester Strategic Portfolio Management WAVE report.
- We offer comprehensive health, dental, and vision benefits, with additional insurance options.
- Employer RRSP and 401K matching programs.
- A fun, collaborative, and diverse environment with regular health and team challenges to keep things light and enjoyable!

At OnePlan, we are committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or expression, or veteran status. We are proud to be an equal‑opportunity workplace.

Upon receipt of an offer letter, candidates will be subject to a standard background check process.

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Apply on Kit Job: kitjob.ca/job/2fsitx

📌 Full Stack Developer (Legacy & Modernization) (Toronto)
🏢 OnePlan
📍 Toronto