Senior Backend Engineer, AI/LLM

# Senior Backend Engineer – AI/LLM ## About the Role Bluehost is seeking a Senior Backend Engineer to join its innovation team and help build the AI-native backbone of its platform. This role focuses on designing production-grade backend systems where AI is a first-class component, including multi-agent orchestration, Retrieval-Augmented Generation (RAG), and provider-agnostic LLM integrations. You’ll take ownership from architecture and concept through production, building scalable services and establishing practical AI delivery guardrails around code review, provenance, licensing, security, and customer data. The role is designed for a self-starting engineer who is comfortable with ambiguity, rapid iteration, and end-to-end ownership. ## Key Responsibilities * Design and scale asynchronous REST/WebSocket APIs in Python using FastAPI or similar frameworks. * Apply dependency injection, type hints, and clean vertical-slice/service architecture. * Implement multi-agent workflows, including sequential, concurrent, and handoff patterns. * Integrate multiple LLM providers through a provider-agnostic layer to support A/B testing and cost-aware routing. * Build and maintain RAG pipelines using vector stores such as pgvector, Chroma, or managed vector search services. * Design and evolve relational database schemas and data models using SQLAlchemy/SQLModel-style ORM and migrations. * Optimize queries and maintain database migration discipline. * Instrument services with structured logging, distributed tracing, and cost/latency metrics. * Maintain production performance standards, including p95 response-time targets under load. * Own end-to-end CI/CD processes, including linting, type checking, testing, packaging, and deployment. * Champion AI throughout the software delivery lifecycle, including code review practices, provenance and licensing checks, and customer-data safeguards for prompts. * Move ideas from concept to production with ownership of architecture and outcomes. ## Required Qualifications * 5+ years of experience building production backend systems in Python. * Real-world experience with asynchronous I/O. * Hands-on experience designing and scaling REST or asynchronous APIs. * Experience with dependency injection and clean service architecture. * Practical experience integrating LLM APIs such as OpenAI, Gemini, or similar. * Experience building AI-ready backend systems. * Hands-on experience with vector databases and RAG-style retrieval architectures. * Strong relational database skills, including schema design, query optimization, and migrations. * Experience using AI across the software delivery lifecycle, beyond code generation. * Ability to evaluate which AI models are appropriate for different problems and identify situations where AI should not be used. * Experience reviewing AI-generated code and understanding its failure modes. * Experience establishing AI delivery guardrails, including generated-code review expectations, provenance and licensing checks, and boundaries for customer data used in prompts. * Experience understanding security or compliance considerations related to AI-enabled development. * End-to-end CI/CD ownership covering build, testing, packaging, and deployment. * Self-starting approach with the ability to work through ambiguity, iterate quickly, and own problems through resolution. ## Preferred Qualifications * Experience with multi-agent orchestration frameworks such as Semantic Kernel, LangChain, or similar. * Experience with LLM cost and observability tooling. ## Skills & Competencies * Python backend engineering * Asynchronous I/O * REST and WebSocket APIs * FastAPI or similar frameworks * LLM integration * Multi-agent orchestration * Retrieval-Augmented Generation (RAG) * Vector databases * Relational database design * SQL and query optimization * CI/CD * Distributed tracing and observability * AI-assisted software delivery * Security, provenance, and licensing awareness * Problem-solving and ownership * Adaptability and independent execution ## Education & Experience **Experience:** 5+ years building production backend systems in Python, including real asynchronous I/O experience. **Education:** No specific educational requirement is stated in the source job description. ## Work Arrangement & Schedule * **Location:** Remote, United States * **Work Arrangement:** Remote * **Posted:** October 2, 2026 * The source does not specify employment type or working hours. ## Compensation & Benefits The source job description does not specify compensation for this role. Listed benefits include: * Work-life balance and a culture that respects employees’ time. * 20+ global employee affinity groups. * Meal Voucher or Food Voucher worth **R$44.55 per working day**. * Comprehensive health and dental insurance with no employee co-pay. * Well-being programs including Gympass, online meditation, and telemedicine. * Access to a pet health insurance partnership. * Educational opportunities through 100+ educational institutions, including undergraduate and graduate programs and language courses. * Life insurance. * Free website hosting. * Mentorship, new challenges, and career growth opportunities. ## Additional Information Bluehost describes its mission as helping small businesses succeed online through an all-in-one platform focused on simplicity, performance, smart tools, and human support. The role is part of Bluehost’s innovation team and focuses on AI-native backend infrastructure and products used by small businesses. **Hashtags:** #LI-PM2 #Bluehost #LI-Remote