HackerOne

HackerOne

Senior Software Engineer, Applied AI

Seattle · Senior · Contract

No sponsorship$190k-$230kDetected 160 days ago
RubyReactRailsFull-Stack DevelopmentAWSGCPAzureGraphQLMachine LearningTensorFlowPyTorchNLPLLMsRAGAgentic AIMLOpsAI OrchestrationA/B TestingCustomer SuccessSensorsResearchLeadershipCollaborationProblem Solving

About the role

  • As a Senior Software Engineer on our AI Platform team, you will contribute directly to the development of our next-generation AI security capabilities, including our in-platform AI security agent, Hai.
  • At HackerOne, we embrace a Flexible Work approach that gives us the freedom to do our best work while also fostering the connections and community that make us stronger.
  • Reflecting this philosophy, this is a role targeted for candidates within ~50 miles of Seattle, WA, Boston, Washington DC, or Austin, TX.

Responsibilities

  • Build components and services that integrate Agentic AI design patterns like AI Orchestration, Memory systems, RAG, Long horizon tasks, LLM-based models into the HackerOne platform, applying an AI-First approach to enhance vulnerability detection and security automation.
  • Implement features for AI red teaming agents and evaluation tools that help identify risks in LLMs and applied AI systems, supporting safer model development.
  • Collaborate cross-functionally with Product, Security Research, and Customer Success to translate customer needs into clear engineering requirements and deliverables.
  • Develop and integrate APIs that enable secure interactions between AI models, internal services, and third-party systems, adjusting quickly as requirements evolve with Change Agility.
  • Use metrics, evaluation data, and telemetry to validate model behavior and improve system performance in alignment with Data-Driven Decision Making.
  • Break down complex AI and security problems into smaller, fundamental components, applying First Principles Problem Solving to deliver simple, scalable solutions.
  • Offensive security is no longer optional - it is the standard for forward-thinking companies that want to build trust and resilience in a world where AI-driven innovation and adversaries are moving faster than ever.
  • We're committed to building a global team!

Requirements

  • 5+ years of experience as a software engineer
  • Must be able and willing to come to the office once per week (typically Thursdays)
  • Experience implementing features within production-grade AI or ML systems, including integrating LLMs or generative AI models into applications
  • Hands-on experience with ML frameworks such as PyTorch, TensorFlow, or HuggingFace Transformers
  • Familiarity with model deployment workflows, evaluation techniques, or MLOps concepts

Nice to have

  • Experience contributing to AI development platforms, internal ML tooling, or experimentation workflows
  • Exposure to agentic frameworks such as ReAct, AutoGen, LangChain, or Semantic Kernel
  • Familiarity with prompt engineering, fine-tuning, RAG architectures, or LLM optimization techniques
  • Experience working with cloud AI/ML services (AWS Bedrock, GCP Vertex AI, Azure ML)
  • Familiarity with full-stack technologies such as Ruby on Rails, GraphQL, or React-especially for integrating AI capabilities into existing systems
  • Compensation Bands:
  • Seattle, WA, Boston, Washington DC, or Austin, TX
  • Employee Assistance Program

Skills

  • HackerOne is a global leader in Continuous Threat Exposure Management (CTEM).

Compensation

  • Compensation Bands:

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)

Company info

  • we combine the ingenuity of the largest security research community with a best-in-class AI-powered platform, trusted by the world's top organizations.
  • HackerOne Values
  • HackerOne is dedicated to fostering a strong and inclusive culture.
  • HackerOne is Customer Obsessed and prioritizes customer outcomes in our decisions and actions.
  • We Default to Disclosure by operating with transparency and integrity, ensuring trust and accountability.
  • Employees, researchers, customers, and partners Win Together by fostering empowerment, inclusion, respect, and accountability.
  • SEATTLE, WA; AUSTIN, TX; BOSTON, MA; WASHINGTON, DC
  • 1 DAY ONSITE PER WEEK
  • HackerOne is at a pivotal inflection point in the security industry.
  • At HackerOne, we're revolutionizing offensive security by combining human intelligence with artificial intelligence to help organizations build a safer internet.

Visa & Work Authorization

  • Visa/work permit sponsorship is not available.
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This listing is sourced directly from HackerOne's careers page and normalized into a canonical job model.