Senior Software Engineer – AI

Newfold Digital

Senior Software Engineer developing async REST/WebSocket APIs with Python for Newfold Digital's AI platform. Designing multi-agent workflows and maintaining CI/CD practices for high-quality AI development.

Posted 5/12/2026full-timeRemote • 🇨🇦 CanadaSeniorWebsite

Tech Stack

Tools & technologies

AzureGrafanaKafkaPostgresPythonRabbitMQ

About the role

Key responsibilities & impact

Design & scale async REST/WebSocket APIs with Python 3.11+ + FastAPI
Implement multi-agent workflows with Semantic Kernel
Integrate LLM providers behind a provider-agnostic layer for A/B and cost-aware routing
Deliver Retrieval-Augmented Generation with vector stores
Expose tool-using agents via OpenAI Assistants for data-analysis / file-manipulation tasks
Evolve schemas with SQLModel / SQLAlchemy 2 & Alembic; tune Postgres for high concurrency async access
Maintain robust CI/CD that lint, type-check, test, package, and deploy
Instrument services with structlog JSON logs, OpenTelemetry traces, and cost/latency metrics
Champion AI-assisted development and share pragmatic problem-solving practices with the team

Requirements

What you’ll need

5 + yrs building production APIs in Python
2 + yrs with FastAPI (or similar async stack)
Deep knowledge of async I/O, Pydantic v2, DI, and observability
Hands-on with Semantic Kernel or comparable agent frameworks
Practical RAG implementations using Azure AI Search, pgvector, or Chroma
Strong Postgres skills, including SQLModel/SQLAlchemy 2 and Alembic migrations
Proven integrations or Side Projects with LLM APIs (OpenAI, Gemini) and structured-output design
Dependency management via Poetry and virtual-env isolation
End-to-end CI/CD ownership (build → scan → test → deploy)
Excellent analytical and problem-solving ability
Remote work readiness with daily overlap of at least 09:00 – 13:00 EST
Nice to have: Event/message queues (RabbitMQ, Azure Service Bus, Kafka)
Nice to have: Observability stacks (Grafana, LangFuse) for LLM cost governance

Benefits

Comp & perks

Flexible work arrangements

ATS Keywords

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Hard Skills & Tools

Python 3.11+FastAPIasync I/OPydantic v2Semantic KernelRetrieval-Augmented GenerationPostgresSQLModelSQLAlchemy 2Alembic

Soft Skills

analytical abilityproblem-solvingteam collaboration