AI Engineer, Senior

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 Group, our portfolio of brands includes: BlueHost, CrazyDomains, HostGator, Network Solutions, , , 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.

• Design & scale async services: Build high-throughput REST/WebSocket APIs in Python FastAPI) or .NET/C#, using DI, type hints, and clean vertical-slice patterns.
• Build agentic systems: Develop multi-agent workflows (handoff, sequential, concurrent) using Semantic Kernel/Autogen or LangChain/LangGraph; ship structured outputs and tool-calling. 
• Build MCP Servers for high throughput APIs
• Implement RAG : Production RAG using Azure AI Search or a vector DB (pgvector/Qdrant/Chroma). 
• Provider-agnostic LLM layer: Integrate multiple providers with a gateway (e.g., LiteLLM) for A/B, fallback, streaming, and cost/latency budgets. 
• Data & schema hygiene: Model with SQL Model/SQL Alchemy 2, manage Alembic migrations, and tune Postgres for highly concurrent async workloads.
• CI/CD & reliability: Own pipelines (Bitbucket/Jenkins/GitHub Actions): lint, type-check, test, containerize (Docker/Poetry), blue/green or canary deploys.
• Observability & guardrails: Instrument with Open Telemetry and Lang fuse for traces, cost, and p95; add dashboards/alerts and safe defaults. 

• 5+ years building production backends; 2+ years with FastAPI or .NET/C# (or comparable async stack).
• Hands-on agent frameworks: Semantic Kernel and/or LangChain/LangGraph in production. 
• RAG pipeline shipped to prod, with measurable latency/quality.
•  Postgres depth: SQLModel/SQLAlchemy 2 + Alembic migrations; performance tuning.
• CI/CD ownership: build → scan → test → deploy; Docker fluency; Poetry/venv hygiene.
• Strong problem-solving: decomposes ambiguous problems, proposes trade-offs, profiles bottlenecks, and improves p95 and $/req with evidence.
• Remote readiness: clear written/spoken communication; comfortable with 8:30 AM–12:30 PM ET overlap.

• Queues/streaming (RabbitMQ, Kafka, Azure Service Bus).
• Langfuse + OpenTelemetry in production; cost governance for LLMs. 
• LiteLLM (LLM gateway) config/routing; providers mix-and-match. 
• OpenAI Assistants/Agents SDK, MCP servers/clients exposure. 

Help build a model-agnostic, agent-driven platform serving millions of SMBs—where system design, measurable impact, and pragmatic engineering come first.

• We've evolved: We provide three work environment scenarios. You can feel like a Newfolder in a work-from-home, hybrid, or work-from-the-office environment.
• Work-life balance: Our work is thrilling and meaningful, but we know balance is keyto living well.
• We celebrate one another's differences: We're proud of our culture of diversity and inclusion. We foster a culture of belonging. Our company and customers benefit when employees bring their authentic selves to work. We have programs that bring us together on important issues and provide learning and development opportunities for all employees. We have 20+ affinity groups where you can network and connect with Newfolders globally.
• We care about you: At Newfold, taking care of our employees is our top priority. We make sure that cutting edge benefits are in place for you. Some of the benefits you will have: We have partnered with some of the best insurance providers to provide you excellent Health Insurance options, Education/ Certification Sponsorships to give you a chance to further your knowledge, Flexi-leaves to take personal time off and much more. Building a community one domain at a time, one employee at a time. All our employees are eligible for a free domain and WordPress blog as we sponsor the domain registration costs.
• Where can we take you? We're fans of helping our employees learn different aspects of the business, be challenged with new tasks, be mentored, and grow their careers. Unfold new possibilities with #teamnewfold

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.