Senior Backend Engineer

Web.com Canada, Inc.; United States; On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Health benefits

401K

Tuition reimbursement

Pet insurance

Generous PTO

Job summary

Bluehost's innovation team is building the AI-native backbone of our platform. You will design async, production-grade backend systems that orchestrate multi-agent workflows, retrieval-augmented generation, and provider-agnostic LLM integration at scale.

You will own end-to-end CI/CD, ensure safe review of generated code, and shape data models with SQLAlchemy/SQLModel. If you are a self-starter who thrives on ambiguity and fast iteration, this role is for you.

Qualifications

• 5+ years building production backend systems in Python.
• Experience designing scalable async REST/WS APIs with DI and clean architecture.
• Hands-on experience with LLM APIs and RAG-powered backends.
• Familiarity with vector stores and retrieval pipelines.
• Strong DB skills and migration discipline; CI/CD ownership.

Responsibilities

• Design and scale async REST/WebSocket APIs in Python with DI.
• Implement multi-agent workflows to route work among LLM agents.
• Integrate multiple LLM providers via a provider-agnostic layer.
• Build and maintain RAG pipelines against vector stores.
• Define data models with SQLAlchemy/SQLModel and manage migrations.
• Instrument services with logs, tracing, and cost/latency metrics.
• Own end-to-end CI/CD, linting, typing, testing, packaging, and deployment.
• Champion AI across the lifecycle and define guardrails for code and data.

Skills

Python

Async I/O

FastAPI

REST APIs

LLM integration

Multi-agent orchestration

CI/CD ownership

Vector databases

Tools

Python

FastAPI

SQLAlchemy/SQLModel

PostgreSQL

Git

LangChain

Semantic Kernel

Chroma

pgvector

Job description

Who We Are

At Bluehost, we believe all small businesses deserve the opportunity to succeed online. Our mission is to give small businesses the confidence to think big. We're the all-in-one platform for small businesses to grow online with powerful simplicity, premium performance, smart tools and human support.

This role is a part of Bluehost's innovation team, the group building the AI-native backbone of our platform while the rest of the business scales around us. You'll design async, production-grade backend systems that treat AI as a first-class citizen: multi-agent orchestration, retrieval-augmented generation, and provider-agnostic LLM integration, all woven into products millions of small businesses depend on. We want a true go-getter who can take an idea from whiteboard to production without waiting to be told how.

What You'll Do & How You'll Make Your Mark

• Design and scale async REST/WebSocket APIs in Python ( FastAPI or similar), using dependency injection, type hints, and clean, vertical-slice architecture


• Implement multi-agent workflows (sequential, concurrent, and handoff patterns) to route work among specialized LLM agents


• Integrate multiple LLM providers behind a provider-agnostic layer, enabling A/B testing and cost-aware routing rather than hard-coding a single vendor


• Build and maintain Retrieval-Augmented Generation (RAG) pipelines against vector stores such as pgvector , Chroma, or a managed vector search service


• Design schemas and evolve data models ( SQLAlchemy / SQLModel -style ORM plus migrations) that support both traditional application logic and AI-driven features


• Instrument services with structured logs, distributed tracing, and cost/latency metrics, holding a real bar for p95 response time under production load


• Maintain end-to-end CI/CD ownership, lint, type-check, test, package, and deploy, so releases are boring and safe


• Champion AI across the delivery lifecycle, not just code generation, and set the guardrails the team works inside: how generated code gets reviewed, how provenance and licensing are checked, and what customer data may enter a prompt


• Move ideas from concept to production fast, with real ownership over architecture and outcomes, not just tickets

Who You Are & What You'll Need to Succeed

• 5+ years building production backend systems in Python, with real async I/O experience


• Hands-on experience designing and scaling REST or async APIs, including dependency injection and clean service architecture


• Practical experience integrating LLM APIs (OpenAI, Gemini, or similar) and building AI-readiness into backend systems from the ground up


• Real experience with vector databases and RAG-style retrieval architectures, not just reading about them


• Strong relational database skills: schema design, query optimization, and migration discipline


• AI-augmented delivery: you use AI across the delivery lifecycle, not just code generation, and can say which models suit which problems and where you don't use them. You review AI-generated code knowing its failure modes, and you have set the guardrails others work inside - review expectations for generated code, provenance and licensing checks, and clear boundaries for what customer data enters a prompt and what a security or compliance review will ask for.


• End-to-end CI/CD ownership, from build and test through packaging and deployment


• A self-starting, go-getter mindset: comfortable with ambiguity, fast iteration, and owning a problem until it's actually solved


• Bonus: experience with multi-agent orchestration frameworks (Semantic Kernel, LangChain , or similar) and LLM cost/observability tooling

Why You'll Love Us

• Work-life balance. Meaningful work, balanced by a culture that respects your time.


• A culture of belonging. We celebrate what makes each of us different, with 20+ affinity groups connecting employees globally.


• We care about you. Excellent Health, HSA, Dental, Vision, Matching 401K, Life/AD&D/STD/LTD, Tuition Reimbursement, Pet Insurance, and generous PTO.

Where can we take you? Mentorship, new challenges, and real career growth. Unfold new possibilities #OTOD!

Employment with Newfold Digital is at-will and nothing in this Job Description should be interpreted or construed to alter the at‑will employment relationship.

This Job Description includes the essential job functions required to perform the job described above, as well as additional duties and responsibilities. This Job Description is not an exhaustive list of all functions that the employee performing this job may be required to perform. The Company reserves the right to revise the Job Description at any time, and to require the employee to perform functions in addition to those listed above.