Senior AI Back-End Engineer (Python)

TL;DR

Senior AI Back-End Engineer (Python): Building and scaling agent-powered backend services for an AI platform with an accent on multi-agent workflows, RAG implementations, and LLM integration. Focus on designing robust, model-agnostic architectures, optimizing high-concurrency Postgres access, and ensuring system observability.

Location: Must be based in Canada. Remote work requires daily overlap of at least 09:00 – 13:00 EST.

Salary: $90,000 – $130,000 annually.

Company

hirify.global is a long-standing digital identity authority helping businesses secure domains, protect brands, and manage their online presence through AI-accelerated tools.

What you will do

• Design and scale async REST/WebSocket APIs using Python and FastAPI.
• Implement multi-agent workflows using Semantic Kernel to route traffic among specialized LLM agents.
• Integrate LLM providers like OpenAI and Google Gemini behind a provider-agnostic layer.
• Deliver Retrieval-Augmented Generation (RAG) solutions using vector stores like Azure AI Search or pgvector.
• Maintain robust CI/CD pipelines and instrument services with OpenTelemetry and structured logging.
• Champion AI-assisted development practices within the engineering team.

Requirements

• Must be based in Canada.
• 5+ years of experience building production APIs in Python, including 2+ years with FastAPI or similar async stacks.
• Hands-on experience with agent frameworks like Semantic Kernel and RAG implementations.
• Strong proficiency in Postgres, SQLModel/SQLAlchemy, and Alembic.
• Proven experience with LLM API integrations and structured-output design.
• Ability to maintain daily work overlap of 09:00 – 13:00 EST.

Nice to have

• Experience with message queues like RabbitMQ, Azure Service Bus, or Kafka.
• Familiarity with observability stacks like Grafana or LangFuse for LLM cost governance.

Culture & Benefits

• Competitive HMO benefits including 175k MBL with one free dependent after one year.
• Generous vacation policy and punctuality bonuses.
• Strong focus on diversity, inclusion, and belonging with 20+ affinity groups.
• Opportunities for mentorship, career growth, and cross-functional learning.
• Commitment to work-life balance in a collaborative, global environment.