HackerOne

Staff Software Engineer, Applied AI

HackerOne
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1 day ago

Base Salary

$200k - $256k/yr

Responsibilities

  • Architect and enhance HackerOne’s autonomous security agent Hai for natural-language reasoning, vulnerability detection, and actionable recommendations.
  • Build agentic AI components and services using orchestration, memory systems, RAG, long-horizon tasks, and LLM-based models.
  • Partner with Product, Security Research, and Engineering to integrate AI capabilities across the HackerOne ecosystem.
  • Design AI red-teaming agents and frameworks to identify weaknesses in LLMs, generative-AI systems, and applied AI deployments.
  • Develop metrics, observability, evaluation frameworks, and feedback loops for model performance, safety, and user impact.
  • Build APIs and integrations connecting AI models, security tools, and the broader HackerOne platform.
  • Incorporate emerging AI safety research, adversarial testing techniques, and agentic-system patterns into responsible-AI strategy.

Requirements

  • 8+ years of software engineering experience, including deep experience building and maintaining production-grade AI platforms and infrastructure.
  • Production expertise with large language models, generative AI, and machine learning frameworks including TensorFlow, PyTorch, and Transformers.
  • Hands-on experience with AI platform engineering, model deployment, model serving infrastructure, and shared AI services architecture.
  • Experience building systems that support multiple AI product teams and applications for scalable experimentation and deployment.
  • Understanding of AI safety and alignment principles, responsible AI development, bias mitigation, and ethical AI practices.
  • Preferred experience with AI development platforms, model registries, experimentation frameworks, agentic orchestration, multi-agent collaboration, secure tool usage APIs, feedback loops, prompt engineering, fine-tuning, RAG, and LLM optimization.
  • Preferred experience with AWS Bedrock, GCP Vertex AI, Azure ML, Docker, Kubernetes, Ruby on Rails, GraphQL, and React.

Benefits

  • Medical, vision, dental, life, and disability insurance, with eligibility varying by country.
  • Equity stock options and retirement plans.
  • Paid public holidays, unlimited PTO, paid maternity and parental leave, and other leaves of absence including caregiver leave.
  • Employee Assistance Program and Flexible Work Stipend.
  • Flexible remote work targeted to candidates within approximately 50 miles of Seattle, with office attendance typically once per week.
  • Employment is contingent on a background check.

Tech Stack

DockerGraphQLKubernetesPyTorchReactRuby on RailsTensorFlow
HackerOne

About HackerOne

5,001-10,000 employees

HackerOne builds a platform for offensive security, combining a global community of security researchers with tools for bug bounties, vulnerability disclosure, pentesting, and AI red teaming. Enterprises use it to continuously find and remediate vulnerabilities across code and cloud via subscription software and managed programs. Founded in 2012 and headquartered in San Francisco, customers include the U.S. Department of Defense, General Motors, Goldman Sachs, Uber, and the UK Ministry of Defence.

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