Appnovation is the AI Product Company. Headquartered in Vancouver, Canada, with teams around the world, Appnovation builds AI products, delivers enterprise AI and digital solutions, and co-invests with clients to bring new AI products to market. Open source has been the foundation of Appnovation's work since 2007, and it remains the foundation underneath every AI product the company builds today. Appnovation teams work with organizations in highly regulated industries, including global leaders such as Pfizer, Google and Astra Zeneca, to help them adopt AI they can govern and own.Senior Software Engineer - BackendAs a Senior Software Engineer - Backend, you will build the. NET services that carry the core business logic of a up-to-date operational Saa S platform for K-12 education. The platform automates administrative processes for school divisions, so the backend work is workflow-heavy and integration-heavy: you will develop REST APIs consumed by a Next.Js frontend, implement durable multi-step business processes as Temporal workflows, build worker services for asynchronous and scheduled processing, and write the integration services that publish and consume events across system boundaries. You will work as part of a dedicated, cross-functional scrum team that operates as an embedded extension of the client's engineering organization. The team includes business analysis and QA capability and owns assigned product services end-to-end - from refinement through development, testing, documentation, and release readiness. You will work directly in the client's repositories, follow their established architecture and engineering standards, and deliver in small, reviewable increments. The data layer spans a Postgre SQL transactional model and a Click House analytics store, with authorization enforced through Keycloak and Open FGA - a real requirement in a multi-tenant product where an administrator in one school division must never see another's data. The platform is moving from pilot deployments toward general availability, so this is a role for a senior engineer who cares about correctness in distributed systems - idempotency, retries, and what happens when the third call fails - and who is ready to own significant slices of the platform with minimal supervision.Key ResponsibilitiesDeveloping and maintaining. NET Core REST APIs, including versioning, validation, error semantics, and Swagger/Open API documentationBuilding worker services for background, scheduled, and queue-driven asynchronous processingWriting integration services that publish and consume events over pub/sub, against clearly defined message contractsModelling and querying relational data in Postgre SQL using Entity Framework Core,



including migrations and query performance tuningBuilding and maintaining API calls into Click HouseEnforcing authorization in application code against Open FGA policies, and integrating with Keycloak for OAuth 2.0 / Open ID Connect authentication and SSOProducing technical analysis and implementation plans for significant changes, and delivering work in small, reviewable merge requestsWriting unit, integration, and API tests, and contributing to the Playwright end-to-end suite where backend behaviour is under testParticipating in code review, responding to Code Rabbit findings, and keeping Git Lab CI/CD pipelines greenInstrumenting services with logging, metrics, and tracing to support production diagnosisParticipating in refinement, planning, review, and retrospective as a member of a self-directed scrum team, and raising missing business decisions earlyTaking ownership of feature areas end to end, from technical design through release and supportMaintaining technical implementation and API documentation as part of the definition of done, not after itResolving defects and supporting post-release stabilization of recently delivered functionalityMentoring less experienced engineers through code review and pairingWhat we are looking forMust-HaveAt least 5-7 years of professional backend development experience with C# and. NET in production environmentsStrong command of. NET Core, ASP. NET Core Web API, and Entity Framework CoreDemonstrated experience building RESTful APIs consumed by real frontend or third-party clientsSolid relational data modelling and SQL skills in Postgre SQL or an equivalent RDBMS, including query performance tuningPractical experience with asynchronous processing - background workers, message queues, or scheduled jobsWorking understanding of async/await in. NET and the failure modes that come with itUnderstanding of event-driven and pub/sub patterns, including at-least-once delivery and idempotent consumersExperience integrating with an identity provider using OAuth 2.0 and Open ID ConnectComfortable working inside an existing codebase and an established set of engineering standards, rather than setting your ownDisciplined approach to automated testing across unit, integration, and API layersUnderstanding of what makes automated tests durable - avoiding hard-coded waits, brittle selectors, shared test state,



and environment-specific assumptionsComfortable working in a Git-based workflow with CI/CD and peer code reviewMust be located in Vancouver, British Columbia, CanadaTechnologiesLanguages/Frameworks: C#,. NET Core, ASP. NET Core, Entity Framework CoreAPIs: REST, Open API/Swagger, API versioningWorkflow and Async: Temporal workflows, worker services, asynchronous processing, event-driven pub/sub, integration servicesDatabases: Postgre SQL, Click House, EF Core migrations, query optimizationIdentity and Authorization: Keycloak, Open FGA, OAuth 2.0, Open ID Connect, role- and policy-based authorizationTesting: x Unit/NUnit, Moq, Testcontainers, unit, integration and API testing, Playwright end-to-end testingBuild/Deploy/Tooling: Git Lab, Git Lab CI/CD, Code Rabbit automated code review, Docker, Jira, ConfluenceNice-to-HaveExposure to Click House or another columnar/OLAP store for reporting workloadsFamiliarity with fine-grained authorization models (Open FGA, Zanzibar-style Re BAC)Hands-on Temporal experience, including workflow versioning and testing strategiesWorking knowledge of Type Script and React, enough to trace an issue across the stackExperience with distributed tracing and structured observability (Open Telemetry)Familiarity with Domain-Driven Design and CQRS patternsSaa S product delivery experience, particularly through a pilot-to-GA transitionExperience with Canadian public-sector or education data privacy requirements (PIPEDA, provincial FIPPA), including data residency considerationsExperience in a consulting or client-facing delivery environmentWho you areYou are a careful engineer who thinks about failure modes before writing the happy path, and who leaves code easier to change than you found it.You ask questions early, communicate clearly when something is off track, and take testing seriously rather than treating it as a step after the work.You treat a feature as incomplete until it is tested, documented, and supportable - finishing the code is the middle of the job, not the end.Thank you for your interest in a career with Appnovation Technologies! Please note that only those selected for an interview will be contacted.At Appnovation, we recognize that diverse teams are the strongest teams. Diversity, Equity & Inclusion is not only something that we embrace - we celebrate it! We are proud to be an Equal Opportunity Employer and we encourage applicants from all backgrounds, lived experiences and industries to apply. Come join us at Appnovation, and learn more about how we stay true to our company values as we build better lives through better digital.Accommodations are available upon request throughout the recruitment process.#J-18808-Ljbffr

📌 Backend Developer (.Net) (Vancouver)
🏢 Appnovation
📍 Vancouver