Senior AI Back-End Engineer

Location: Remote in Canada; daily overlap required from 09:00–13:00 EST

Target compensation: $90,000–$130,000 annually

Company

hirify.global's Network Solutions team helps businesses manage domains, brands, websites, and digital infrastructure with enterprise-grade security.

What you will do

• Design and scale asynchronous REST and WebSocket APIs with Python, FastAPI, dependency injection, type hints, and vertical-slice architecture.
• Build multi-agent workflows with Semantic Kernel and integrate OpenAI and Google Gemini models through a provider-agnostic layer.
• Deliver retrieval-augmented generation using Azure AI Search, pgvector, or Chroma, including tool-using agents for data analysis and file manipulation.
• Evolve SQLModel and SQLAlchemy schemas, manage Alembic migrations, and tune PostgreSQL for high-concurrency asynchronous access.
• Own CI/CD pipelines covering linting, type checking, testing, packaging with Docker, scanning, and deployment.
• Instrument services with structured logs, OpenTelemetry traces, and cost and latency metrics while maintaining p95 latency below 100 ms.

Requirements

• 5+ years building production APIs with Python and 2+ years with FastAPI or a similar asynchronous stack.
• Deep knowledge of asynchronous I/O, Pydantic v2, dependency injection, and observability.
• Hands-on experience with Semantic Kernel or comparable agent frameworks and practical RAG implementations.
• Strong PostgreSQL skills, including SQLModel or SQLAlchemy 2 and Alembic migrations.
• Experience integrating OpenAI or Gemini APIs, designing structured outputs, and managing dependencies with Poetry.
• Remote work readiness from Canada with daily 09:00–13:00 EST overlap; proven end-to-end CI/CD ownership and strong analytical and problem-solving skills.

Nice to have

• Experience with RabbitMQ, Azure Service Bus, or Kafka.
• Familiarity with Grafana or LangFuse for LLM cost governance and observability.

Culture & Benefits

• Focus on work-life balance, diversity, inclusion, and belonging.
• Access to affinity groups, learning and development opportunities, mentoring, and career growth.
• Competitive HMO benefits, including 175k MBL with one free dependent after one year of service.
• Punctuality bonus and generous vacation policy.