New Value Solutions, a national IT consulting company, is seeking a Senior Backend Developer to support the development of two pre-launch, AI-native software products. This is a hands-on senior individual contributor role with significant ownership of backend architecture, development, deployment, and ongoing operations. The successful candidate will bring robust production Python experience together with practical experience building LLM-powered applications and agent-based systems.

You will work as part of a small senior team using AI-assisted development tools as part of the day-to-day engineering workflow. This opportunity is expected to begin as a 3-month contract/fractional engagement, with the potential to move into a permanent full-time position. Candidates must be located in the Greater Toronto area.

The role is a hybrid working arrangement.

Responsibilities Own backend architecture and development across two AI-native products. Design and develop scalable APIs and backend services using Python and FastAPI. Build and enhance LLM-powered features, including tool-calling agents, agent routing, conversation memory, structured outputs, and RAG.

Design and maintain PostgreSQL databases, schemas, migrations, and data access layers. Build secure,



scalable multi-tenant services and real-time/data-processing capabilities. Support production deployment and operations, including CI/CD and cloud infrastructure.

Maintain strong engineering practices around testing, documentation, security, and code quality.

Requirements ~7+ years of backend software engineering experience. ~3+ years of experience building production Python services, ideally using FastAPI or similar asynchronous frameworks. ~ Hands-on experience developing LLM-powered product features or agent systems, beyond basic API integration. ~ Solid PostgreSQL and relational database experience, including schema design, migrations, indexing, and query performance. ~ Experience developing multi-tenant SaaS applications, including authorization, tenant isolation, and RBAC. ~ Production experience with Docker, Kubernetes, CI/CD, and infrastructure-as-code. ~ Regular hands-on use of AI development tools such as Claude Code, Cursor, GitHub Copilot, or similar. ~ Strong written communication and documentation skills. ~ Experience with Go, Temporal or similar workflow engines, RAG/vector search, real-time systems, and gRPC/Protobuf would be considered an asset.

📌 Backend Developer - Python / AI (Toronto)
🏢 New Value Solutions
📍 Toronto