Senior Software Developer, Application Performance …, Toronto

At Range Group we believe in the power of the professional travel advisor. We represent over $4.5 billion in annual travel sales. All our investments stem from a common thesis, that travel advisors add real value to a trip. Travel advisors when equipped with technology and 24/7 support are irreplaceable. Equally important is our philanthropy. Range Foundation channels 10% of group profits to social impact. From exploration grants, improved access to education, new discoveries on sea and land, cultural infrastructure, and helping our global neighbors in times of need — we are investing to build a better future. The Role We're looking for an experienced developer who thrives on autonomy and wants to make a real impact. You'll join our TMT Technology team at TripArc, where you'll navigate the interesting challenge of modernizing a mature travel platform—decomposing legacy .NET systems into Azure-native microservices while keeping the business running smoothly. This isn't a role where you'll wait for detailed specifications or step-by-step guidance. You'll own problems end-to-end: digging into complex business logic in existing codebases, designing solutions that bridge old and new, and shipping code that serves thousands of travel professionals daily. Some days you'll be untangling decade-old stored procedures; others you'll be architecting event-driven services on Azure. We need someone who finds that variety energizing rather than frustrating. You'll work within our Agile framework—two-week sprints, daily stand-ups, the usual ceremonies—but we expect you to drive your own work. That means collaborating directly with QA, Product, and stakeholders to clarify requirements, pushing back when timelines don't make sense, and helping teammates when they're stuck. Documentation matters here: we use JIRA and Confluence extensively, and your tickets and design docs should be clear enough that anyone can pick up where you left off. What You'll Do Design, build, and deploy features across our stack—from legacy Web Forms applications to modern .NET Core microservices running on Kubernetes. Lead migration efforts, breaking down monolithic components into loosely-coupled services while maintaining system reliability. Write and optimize complex SQL queries and stored procedures; work with MongoDB for document storage where appropriate. Build and maintain event-driven integrations using NServiceBus and Azure Service Bus. Collaborate with Product and QA to scope work, estimate effort, and balance competing priorities within sprint commitments. Own your deliverables through the full lifecycle: design, implementation, testing, deployment via Azure Pipelines, and production support. Contribute to architectural decisions and help establish patterns that the broader team can follow. Support fellow developers through code reviews, pair programming, and knowledge sharing—elevating the whole team's capabilities. Maintain explicit documentation in Confluence and keep JIRA tickets updated so the team has visibility into progress and blockers. What We're Looking For Technical Skills 5+ years working with C# and the .NET ecosystem, with hands-on experience in both .NET Framework and .NET Core. Strong SQL Server skills—comfortable writing complex queries, optimizing performance, and working with large, intricate database schemas. Experience building and consuming RESTful APIs and working with Entity Framework or similar ORMs. Nice to have MongoDB experience Familiarity with message-based architectures; NServiceBus or Azure Service Bus experience is preferred. Exposure to CI/CD pipelines, ideally Azure Pipelines or similar tools. Working knowledge of containerization (Docker) and orchestration (Kubernetes) in a cloud environment. Angular experience is a plus if you're interested in occasional front-end work, but this is primarily a backend-focused role. How You Work You take initiative. When you see a problem, you investigate it. When requirements are ambiguous, you ask the right questions or make reasonable assumptions and move forward. You communicate clearly—whether that's explaining a technical tradeoff to a Product Manager, documenting a design decision, or helping a junior developer understand a concept. You're comfortable with ambiguity and can make progress without having every detail spelled out. You balance speed with quality, knowing when to optimize and when "good enough" actually is. You write documentation that you'd want to read—because you know future-you (or your teammate) will thank you. Our Technology Our platform runs on Azure Cloud , and we're actively modernizing our architecture. Here's what you'll work with: Backend: .NET Core microservices alongside legacy .NET Framework applications. We've built proprietary libraries on top of the framework for our internal use. Entity Framework for data access. Data: SQL Server (complex schemas, heavy use of stored procedures) and MongoDB for document storage. Azure Data Factory for data orchestration. Messaging: NServiceBus and Azure Service Bus for event-driven communication between services. Infrastructure: Docker containers orchestrated with Kubernetes, deployed through Azure Pipelines. Git repos for version control. Frontend: Angular with Angular Material (though this role is primarily backend-focused), plus legacy .NET Web Forms. Tools: JIRA and Confluence for project management and documentation. GitHub Copilot for AI-assisted development. VS 2022, VS Code, or Rider — your choice. Other: Redis for caching, GraphQL in select services. Why This Role You'll have real influence over how we modernize our platform. This isn't a "maintain the status quo" position—we're actively rearchitecting systems, and you'll help shape those decisions. You'll work with a team that values pragmatism over dogma, where the goal is shipping software that works for our users, not chasing trends for their own sake. Who Thrives Here People who take ownership—of their code, their commitments, and the outcomes. Developers who'd rather figure something out than wait to be told what to do. Those who see legacy code as a puzzle to solve, not a burden to complain about. Team players who make everyone around them better, not just themselves. People comfortable with a fast-paced environment where priorities sometimes shift. Our team is made up of people who are smart, low ego, and accountable for their results. If you want a role with autonomy, interesting technical challenges, and the chance to shape how a platform evolves, we'd like to hear from you. We are committed to providing employment accommodation in accordance with the Ontario Human Rights Code and the Accessibility for Ontarians with Disabilities Act. If you require accommodation due to a disability at any stage of our hiring process, please advise us when completing your application. Apply on Kit Job: kitjob.ca/job/2prgfd