Senior Software Engineer (AI)

TL;DR

Senior Software Engineer (AI) (Python/FastAPI): Building and scaling an agent-powered AI platform with an accent on multi-agent workflows, RAG implementations, and model-agnostic routing. Focus on designing async REST/WebSocket APIs, implementing tool-using agents, and optimizing Postgres for high-concurrency access.

Location: Remote (Quebec, Canada). Must have daily overlap of 09:00 – 13:00 EST

Company

hirify.global is a leading web technology company serving millions of customers globally through brands like Bluehost, HostGator, and Web.com.

What you will do

• Design and scale async REST/WebSocket APIs using Python 3.11+ and FastAPI with clean vertical-slice architecture.
• Implement multi-agent workflows with Semantic Kernel to route traffic among specialized LLM agents.
• Integrate LLM providers (OpenAI, Google Gemini) behind a provider-agnostic layer for A/B and cost-aware routing.
• Deliver Retrieval-Augmented Generation (RAG) using vector stores such as Azure AI Search, pgvector, or Chroma.
• Evolve schemas with SQLModel/SQLAlchemy 2 and tune Postgres for high concurrency async access.
• Maintain robust CI/CD pipelines using Bitbucket and Jenkins to deploy Dockerized services.

Requirements

• 5+ years of experience building production APIs in Python and 2+ years with FastAPI (or similar async stack).
• Deep knowledge of async I/O, Pydantic v2, dependency injection, and observability.
• Hands-on experience 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.
• Remote work readiness with daily overlap of at least 09:00 – 13:00 EST.

Nice to have

• Experience with event/message queues such as RabbitMQ, Azure Service Bus, or Kafka.
• Knowledge of observability stacks like Grafana or LangFuse for LLM cost governance.

Culture & Benefits

• Opportunity to build the agent-powered backbone of a platform serving millions of users.
• AI-assisted development environment utilizing GitHub Copilot and Cursor.
• High-performance engineering standards with a focus on low latency (p95 < 100 ms).