About Rentsync:
Rentsync is an award-winning, high-growth organization that provides high quality websites, marketing services, and software solutions to the rental and property management industry throughout Canada and the United States.
About the Role
We’re looking for an experienced .NET Core Developer to help build and enhance modern, business-oriented applications. In this role, you’ll design and maintain scalable APIs, optimize server-side performance, and contribute to the ongoing evolution of our systems using Clean Architecture and modern C# patterns. You’ll collaborate closely with product, front-end, and QA teams to deliver secure, reliable, and efficient solutions. This is a great opportunity to work with cutting-edge tools and AI technologies while refactoring legacy systems and shaping the future of our platform.
Duties & Responsibilities
- Develop, maintain, and optimize server-side logic and database structures.
- Design and implement RESTful APIs and other web services to support front-end functionality based on a description from the product team.
- Create and support existing unit and integration tests.
- Participate in the refactoring of the legacy code (.NET 4.8).
- Collaborate with front-end developers, QA team, and product managers to find a solution to reach functional and non-functional requirements.
- Implement data security and protection measures.
- Stay updated with emerging back-end technologies and best practices.
- Troubleshoot, debug, and resolve issues in production and development environments.
Required Skills, Knowledge & Qualifications:
- 5 years+ experience with .NET Core with API development for business oriented projects
- High level of knowledge of EF
- CQRS/MediatR experience in a workplace setting
- Deep understanding of Clean Architecture
- Familiarity with Modern C# patterns and approaches (primary constructors, records, nullable reference types, source generators, etc.)
- Experience with Unit tests creation and modification (NSubstitute library)
- AI tools knowledge and practical application skills
- Located in Canada & legally entitled to work in Canada
Rentsync is an equal opportunity employer. If you are selected to participate in the interview process and require unique accommodations, please don’t hesitate to let us know.
Successful candidates may be required to complete a criminal background check in the final phase of the interview process.
Skills Required
- 5+ years experience with .NET Core and API development
- High level of knowledge of Entity Framework (EF)
- CQRS and MediatR experience in a workplace setting
- Deep understanding of Clean Architecture
- Familiarity with modern C# patterns (primary constructors, records, nullable reference types, source generators)
- Experience creating and modifying unit tests (NSubstitute)
- Practical experience using AI tools
- Located in Canada and legally entitled to work in Canada
What We Do
Rentsync equips Canada’s rental housing professionals with the tools, data, and services they need to market smarter, lease faster, and manage more efficiently. Our ecosystem includes Rentals.ca: Canada’s leading online rental marketplace, and Building Stack: the leasing and resident management platform that powers operational success across all portfolio sizes. From listing syndication, lead automation and lease signing to digital advertising, brand development, and custom websites, Rentsync supports the entire list-to-lease (and beyond) lifecycle. Our expert Agency Services team works as an extension of yours, delivering strategic digital campaigns and creative execution tailored to your leasing goals. With built-in performance reporting and a suite of Rental Market Intelligence products and services, we give clients the data insights they need to act quickly and optimize strategy at every stage. List. Lease. Live. All with Rentsync.
