About the role

Senior AI Back-End Engineer designing and scaling async REST/WebSocket APIs at Network Solutions. Implementing multi-agent workflows and integrating LLM providers for enhanced digital presence management.

Responsibilities

Design & scale async REST/WebSocket APIs with Python 3.11+ + FastAPI
Implement multi-agent workflows with Semantic Kernel to route traffic among specialised LLM agents
Integrate LLM providers behind a provider-agnostic layer for A/B and cost-aware routing
Deliver Retrieval-Augmented Generation with vector stores such as Azure AI Search, pgvector, or Chroma
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 (Docker), 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

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

Work-life balance
Competitive HMO benefits – 175k MBL with one free dependent upon one year of service!
Punctuality Bonus
Generous Vacation policy
Programs that bring us together on important issues and provide learning and development opportunities for all employees
20 + affinity groups where you can network and connect with Newfolders globally