Senior Software Engineer, AI

Summary

Join HackerOne's AI Platform team as a Staff Software Engineer and revolutionize cybersecurity. Develop cutting-edge AI-powered security solutions, working directly on the AI platform and contributing to the in-platform AI security agent "Hai." Build next-generation AI safety and security tools for thousands of companies. Harness artificial intelligence to help organizations create more secure software and detect vulnerabilities faster. Work alongside a global community of security researchers. This primarily remote position, based in Seattle, Washington, requires occasional in-person collaboration.

Requirements

• 8+ years of experience as a software engineer
• Experience building production-grade AI platforms and infrastructure that support multiple AI product teams and applications
• Strong hands-on experience with large language models (LLMs), generative AI, and machine learning frameworks (TensorFlow, PyTorch, Transformers) in production environments
• Expertise in AI platform engineering including model deployment, MLOps pipelines, model serving infrastructure, and shared AI services architecture
• Solid understanding of AI safety and alignment principles, including responsible AI development, bias mitigation, and ethical AI practices

Responsibilities

• Build and evolve our autonomous AI security agent “Hai” with capabilities to plan, reason, and take secure actions including vulnerability detection, threat intelligence generation and automated security analysis
• Build and enhance our AI security agent "Hai" to provide instant security insights, natural language query processing, and actionable recommendations for security teams
• Develop AI red teaming agents and frameworks that help identify vulnerabilities in large language models, generative AI systems, and applied AI deployments
• Collaborate with product teams to integrate AI capabilities that enhance vulnerability discovery, validation, and remediation
• Create APIs and integrations that enable seamless interaction between AI models, security tools, and the broader HackerOne ecosystem
• Partner with cross-functional teams including Product, Security Research, and Customer Success to translate AI innovations into customer-facing security solutions
• Integrate emerging agentic frameworks and LLM-based orchestration tools (e.g., LangChain, Semantic Kernel, AutoGen, OpenAgents) to power stateful AI agents with access to security tools, APIs, and third-party systems
• Stay current with emerging AI security threats, research cutting-edge AI safety techniques, and contribute to the development of industry-leading AI security standards

Preferred Qualifications

• Experience building AI development platforms, model registries, experimentation frameworks, and tools that accelerate AI product development across organizations
• Familiarity with frameworks like ReAct, AutoGen, or Semantic Kernel for agentic orchestration
• Experience in agent action routing, secure tool usage APIs, and feedback loops for autonomous agents
• Knowledge of prompt engineering, fine-tuning techniques, retrieval-augmented generation (RAG), and advanced LLM optimization strategies
• Background with cloud-based AI/ML services (AWS Bedrock, GCP Vertex AI, Azure ML) and containerization technologies for AI workloads
• Familiarity with Ruby on Rails, GraphQL, React, and experience integrating AI capabilities into existing web applications and APIs

Benefits

• Health (medical, vision, dental), life, and disability insurance
• Equity stock options
• Retirement plans
• Paid public holidays and unlimited PTO
• Paid maternity and parental leave
• Leaves of absence (including caregiver leave and leave under CO's Healthy Families and Workplaces Act)
• Employee Assistance Program
• Flexible Work Stipend