Rapid7

Senior Principal AI Engineer

Rapid7
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1 day ago
Dublin, IrelandStaff+

Responsibilities

  • Set the AI technical vision, architecture, model strategy, and multi-year roadmap for LLM and agentic systems across Rapid7.
  • Lead complex, high-risk initiatives involving fine-tuning, distillation, post-training, and inference optimization of LLMs.
  • Establish company-wide standards for context engineering, evaluation, benchmarks, and AI release gates.
  • Lead the design and optimization of LLM inference at scale while balancing quality, latency, and cost.
  • Conduct design reviews, resolve complex technical trade-offs, and build critical model, training, and inference code.
  • Mentor Principal, Staff, and Senior engineers and develop company-wide AI engineering capability.
  • Represent Rapid7’s AI engineering organization to executives, customers, and the external community.

Requirements

  • 14+ years of software or ML engineering experience, including 2+ years building production LLM or agentic AI systems.
  • Track record of building scalable, production-grade AI systems and shared platforms adopted across multiple products.
  • Leading-edge expertise in transformer architecture, attention, tokenization, positional encodings, model training, and model serving.
  • Advanced PyTorch experience with custom model code, mixed precision, and distributed training using technologies such as FSDP and DeepSpeed.
  • Hands-on experience with full and parameter-efficient fine-tuning, LoRA, QLoRA, distillation, preference optimization, and reinforcement-learning-based methods such as DPO and GRPO.
  • Deep experience with context engineering, retrieval, memory, long-running agent workflows, and evaluation strategy for LLM and agent systems.
  • Deep knowledge of inference optimization, including KV-cache management, continuous batching, speculative decoding, quantization, and serving with vLLM, SGLang, or TensorRT-LLM.
  • Strong predictive AI, classical ML, distributed systems, and Python fundamentals.
  • Demonstrated technical leadership, mentoring, cross-functional influence, and organization-wide ownership.
  • Recognition as an AI expert through publications, patents, open-source contributions, or industry engagement.
  • A PhD in Computer Science, Machine Learning, AI, or a related field is preferred, or equivalent depth of expertise demonstrated through industry experience and technical contributions.

Benefits

  • Ireland annual salary range of €137,800.00–186,400.00 EUR, excluding variable compensation, equity, and benefits.

Categories

Rapid7

About Rapid7

5,001-10,000 employees

Rapid7 builds a cloud security operations platform and services for enterprises, combining vulnerability management, detection and response (SIEM/XDR and MDR), application security testing, and security automation. Its Insight platform products include InsightVM, InsightIDR, InsightAppSec, and InsightConnect, sold as subscriptions with optional managed services. Founded in 2000 and headquartered in Boston, the NASDAQ-listed company (RPD) serves more than 11,500 customers worldwide.

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