Senior AI Back-End Engineer

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🕒 April 15

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Newfold Digital

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 2021

🌐 Web 3

🛍️ eCommerce

☁️ SaaS

💰 Venture Round on 2021-01

Web 3 • eCommerce • SaaS

Newfold Digital is a leading web presence solutions provider serving millions of small-to-medium businesses globally. Through its portfolio of brands, including Bluehost, CrazyDomains, HostGator, Network Solutions, Register. com, Web. com, and many others, Newfold Digital helps customers of all sizes build a digital presence that delivers results and adds value to businesses. With extensive product offerings such as domains, website builders, hosting, security, online marketing, professional website design, and SEO services, along with personalized support, Newfold Digital collaborates with its customers to meet their online presence needs.

📋 Description

• Design & scale async REST/WebSocket APIs with Python 3.11+ + FastAPI • Implement multi-agent workflows with Semantic Kernel (handoff, sequential, concurrent) • Integrate LLM providers (OpenAI GPT-4.1/mini, Google Gemini 2.5 Flash) 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 (Code-Interpreter) for data-analysis / file-manipulation tasks • Evolve schemas with SQLModel / SQLAlchemy 2 & Alembic ; tune Postgres for high-concurrency async access • Maintain robust CI/CD (Bitbucket Jenkins) that lint, type-check, test, package (Docker), and deploy • Instrument services with structlog JSON logs, OpenTelemetry traces, and cost/latency metrics ; hold p95 < 100 ms • Champion AI-assisted development (GitHub Copilot, Cursor) and share pragmatic problem-solving practices with the team

🎯 Requirements

• 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

🏖️ Benefits

• competitive HMO benefits – 175k MBL with one free dependent upon one year of service! • Punctuality Bonus • Generous Vacation policy