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Back End Developer
Back End DeveloperRobert Half • Mississauga, ON, CA
Back End Developer

Back End Developer

Robert Half • Mississauga, ON, CA
1 day ago
Job type
  • Permanent
  • Temporary
  • Quick Apply
Job description

We are looking for a Senior Backend Developer to join a growing engineering team focused exclusively on building a new, enterprise-grade product. This is a product-only role (no client delivery or consulting work), where you’ll play a key part in translating architectural vision into robust, production-ready backend services. If you have the below requirements, please apply today!

What You’ll Do

  • Implement backend services under architectural guidance, contributing to foundational platform components
  • Build scalable, cloud-native services following established patterns, standards, and best practices
  • Develop calculation-heavy, deterministic business logic with a strong emphasis on correctness and repeatability
  • Design and optimize data pipelines and processing workflows
  • Maintain a high bar for code quality, testing, performance, and reliability
  • Collaborate closely with the Principal Architect on technical design decisions and implementation strategies
  • Write and maintain comprehensive unit and integration tests to support auditability and long-term maintainability

Key Challenges You’ll Tackle

  • Developing financial-grade, audit-sensitive systems
  • Handling complex data processing and transformation pipelines
  • Building performance-critical, deterministic logic
  • Creating foundational backend services that scale to enterprise-level customers
  • Required Skills & Experience

    Backend Development

  • 3–8+ years of experience in backend software development
  • Strong proficiency in .NET / C# (required)
  • Experience with strongly-typed, compiled languages
  • Frameworks & APIs

  • ASP.NET Core
  • Entity Framework Core
  • Background workers and async processing pipelines
  • RESTful API design and implementation
  • Databases

  • Strong experience with relational databases such as SQL Server / Azure SQL or PostgreSQL
  • Solid understanding of query optimization, indexing, and performance tuning
  • Cloud & Engineering Practices

  • Cloud-native development experience (Azure strongly preferred)
  • Experience building and supporting data pipelines
  • Strong testing discipline (unit, integration)
  • Performance profiling and optimization experience
  • Nice to Have

  • Message queues and asynchronous messaging
  • Docker and containerized workloads
  • CI / CD pipelines
  • Event-driven architectures
  • This job posting is for a current vacancy with our client.
  • Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster.
  • backend
  • .net
  • C#
  • microservices
  • testing
  • azure
  • SQL
  • asp.net
  • API
  • Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

    Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more.

    This job posting is for a current vacancy with our client.

    Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster.

    Questions? Call your local office at 1.888.490.4429. All applicants applying for Canadian job openings must be authorized to work in Canada.

    Only job postings for jobs located in Quebec appear in French.

    © 2025 Robert Half. By clicking “Apply,” you’re agreeing to Robert Half’s Terms of Use and Privacy Notice .

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    Back End Developer • Mississauga, ON, CA

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