Senior Backend Engineer

Newfold Digital; Brasil; A distancia; BRL 726.000 - 985.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Meal Voucher

Health insurance

Well-being program

Pet health insurance

Educational platform

Life insurance

Free website hosting

Mentorship & career growth

Descripción de la vacante

Bluehost, part of Newfold Digital, is building the AI-native backbone of our platform to empower millions of small businesses online. You’ll design async, production-grade backend systems in Python, orchestrating multi-agent workflows, integrating provider-agnostic LLMs, and building Retrieval-Augmented Generation pipelines with vector stores.

You’ll own end-to-end CI/CD, establish guardrails for provenance and licensing, and work with data schemas, observability, and cost-aware routing to move

Formación

• 5+ years building production backend systems in Python with async I/O.
• Hands-on experience designing and scaling REST or async APIs with DI and clean architecture.
• Practical experience integrating LLM APIs and building AI-ready backend systems.
• Experience with vector databases and RAG-style retrieval architectures.
• Strong relational database skills and migration discipline.
• End-to-end CI/CD ownership and a proactive, autonomous mindset.

Responsabilidades

• Design and scale async REST/WebSocket APIs in Python with DI and clean architecture.
• Implement multi-agent workflows to route work among LLM agents.
• Integrate multiple LLM providers behind a provider-agnostic layer.
• Build RAG pipelines against vector stores like pgvector or Chroma.
• Design schemas and evolve data models to support AI features.
• Instrument services with logs, tracing, and cost/latency metrics.
• Own end-to-end CI/CD, testing, packaging, and deployment.

Conocimientos

Python

Async I/O

REST API design

Dependency injection

LLM API integration

Vector databases

RAG architectures

CI/CD ownership

Herramientas

SQLAlchemy/SQLModel

pgvector

Chroma

LangChain/Semantic Kernel

Descripción del empleo

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.

• We offer a Meal Voucher or Food Voucher worth R$44.55 per working day.
• Comprehensive health and dental insurance, with no employee co-pay.
• Well-being program including Gympass, online meditation, and telemedicine.
• Do you have a dog, cat, rabbit, hamster, goat, turtle, or even a mini dragon? We offer access to a pet health insurance partnership.
• Educational platform: pursue undergraduate and graduate degrees, language courses, and much more through 100+ educational institutions at highly affordable rates.
• Life insurance coverage.
• Free website hosting.
• Where can we take you? Mentorship, new challenges, and real career growth.

Unfold new possibilities #OTOD! #LI-PM2 #Bluehost #LI-Remote

Newfold Digital is a leading web technology company serving nearly seven million customers globally. Established in 2021 through the combination of leading web services providers Endurance Web Presence and Web.com Group, our portfolio of brands includes: BlueHost, CrazyDomains, HostGator, Network Solutions, Register.com, Web.com, and many others. We help customers of all sized build a digital presence that delivers results. With our extensive product offerings and personalized support, we take pride in collaborating with customers to serve their online presence needs.