[Hiring] Senior Backend Engineer @Newfold Digital

Role Description

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.

• 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.

Qualifications

• 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.
• 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.

Benefits

• Work-life balance.
• Meaningful work, balanced by a culture that respects your time.
• A culture of belonging, celebrating diversity with 20+ affinity groups connecting employees globally.
• 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.
• 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.
• Mentorship, new challenges, and real career growth.