[Hiring] Principal Engineer @DOUGLAS ELLIMAN OF LI LLC

Role Description

We are seeking an experienced, hands-on Principal Engineer reporting directly to the Head of AI Transformation to serve as technical architect and execution driver across our enterprise agentic AI ecosystem, cloud transformation, and modernization initiatives. You will work with leadership to shape the technical direction, then own its execution:

• Architecting systems for autonomous AI agents
• Orchestrating complex workflows
• Building cloud-native systems on GCP
• Driving modern CMS/web platform architecture

You will partner directly with our strategic implementation and cloud transformation partners, steering joint workstreams, ensuring code and architectural rigor, and managing operational knowledge transfer. You will also guide the bridge between existing systems and target architecture:

• Evaluating legacy services (primarily .NET/C# monoliths and scheduled workflows)
• Decomposing and migrating them to modern GCP services

Qualifications

• 10+ years of progressive experience in software engineering, backend architecture, and distributed systems
• 3+ years in a Staff or Principal Engineer capacity, acting as technical architect and driving execution on complex cross-functional systems
• Production multi-agent systems built with frameworks such as LangGraph, CrewAI, AutoGen, Vertex AI Agent Builder, or custom orchestration engines
• Hands-on architecture across Vertex AI, Cloud Run, Pub/Sub, Cloud Storage, BigQuery, VPCs, and IAM
• Track record collaborating with external development squads, systems integrators, or cloud partners to co-develop, review, and operationalize mission-critical workloads
• Asynchronous messaging, event-driven architectures, RESTful APIs, containerization, and CI/CD pipelines
• Bachelor's or Master's degree in Computer Science, Software Engineering, or equivalent practical experience

Requirements

• Architecting or replatforming on headless/composable CMS, API-first architectures, and modern web frameworks
• Telemetry, tracing, and monitoring for LLM and agentic workloads (e.g., LangSmith, Arize Phoenix, GCP Cloud Trace/Monitoring)
• Kubernetes (GKE) and gRPC depth
• Experience with .NET Core and legacy .NET Framework, enabling you to inspect legacy codebases, decouple monoliths, and design clean migration paths
• Leading migrations from on-premises or Microsoft-centric environments (Azure / Windows Server) to Google Cloud with zero operational downtime
• Vector indexing, semantic search, and enterprise data warehousing

Company Description