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Principal Software Engineer

Bellevue, WA Full-time On-site 09/10/2026 Job ID: 000155
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Systems architecture Data pipelines AI/ML platforms Semantic layers Application interfaces

Summary

What you’ll impact

The Principal Engineer for the platform will lead the design and implementation of the organization’s data lake and AI platform, overseeing architecture across data pipelines, AI/ML systems, and semantic layers. This role involves building scalable, modular, and highly available infrastructure while mentoring engineers and driving AI‑enabled user experiences.

Responsibilities

What you'll do

  • Own end-to-end systems architecture across data pipelines, AI/ML platforms, semantic layers, and application interfaces — designing for modularity, scale, and durability from day one.
  • Build and evolve the data integration layer: ingestion, normalization, and orchestration across structured and unstructured sources, using API-first design principles (REST, GraphQL, gRPC) and real-time streaming technologies like Kafka and Apache Pulsar.
  • Architect the semantic intelligence layer: knowledge graphs, ontology design, vector embeddings, and RAG techniques that give Auger context-aware reasoning across the full enterprise data fabric.
  • Design and operate scalable AI/ML platforms for training, deployment, and model lifecycle management — integrating LLMs, embeddings, and multimodal models into production applications via MLOps tooling (MLflow, SageMaker, Databricks).
  • Drive AI into the application layer: partner with product and design to ship agentic, adaptive user experiences that surface intelligence at the moment operators need it.
  • Set architectural direction across the platform: make layer boundaries, evolution strategies, and tradeoffs explicit — and document decisions the team can execute against with confidence.
  • Raise the bar on operational rigor: fault tolerance, high availability, observability, and performance at enterprise scale are non‑negotiable properties, not afterthoughts.
  • Mentor engineers on system design, coding standards, and operational excellence — and hold a high bar on what ships.

Requirements

What you’ll bring

  • Bachelor or Master's degree in Computer Science, Engineering, or a related field.
  • 10+ years of experience in systems architecture, software engineering, and platform development — with a proven track record building scalable data platforms or AI-driven systems at enterprise scale.
  • Deep programming expertise in Python, Java, or C++, and hands‑on experience building distributed systems in cloud‑native environments (Azure, AWS, or GCP, including multi‑cloud).
  • Fluency in real‑time data processing and analytics frameworks (Spark, Kafka, Flink) and big data technologies (Databricks, Snowflake, Hadoop).
  • Advanced understanding of semantic modeling, knowledge graphs, and ontology design — including graph databases, graph embeddings, link prediction, and GNNs.
  • Hands‑on experience with AI/ML pipeline design and deployment, including frameworks such as TensorFlow, PyTorch, or equivalent, and familiarity with architectural patterns including microservices, event‑driven architectures, and domain‑driven design.
  • Technical leadership through ambiguity: you set direction, communicate tradeoffs clearly to technical and non‑technical partners, and write crisp architecture decisions when the stakes are high.

Ready to Move Forward?

Apply now and our recruiting team will reach out with next steps, interview guidance, and client insights tailored to this role.