Infrastructure Engineer III

HackerOne

Infrastructure Engineer III responsible for managing and improving cloud systems for HackerOne's cybersecurity platform. Collaborates with teams to ensure reliability, security, and scalability of infrastructure.

Posted 5/20/2026full-timeRemote • District of Columbia, Massachusetts, Texas, Washington • 🇺🇸 United StatesMid-LevelSenior💰 $140,000 - $175,000 per yearWebsite

Tech Stack

Tools & technologies

AWSCloudGraphQLKubernetesLinuxRubyRuby on RailsTerraform

About the role

Key responsibilities & impact

Onboard with your squad and the broader engineering organization
Learn HackerOne’s infrastructure, tooling, and workflows (AWS, Terraform, Kubernetes, Ruby on Rails, GraphQL, etc.)
Become familiar with our reliability, security, and incident management practices
Participate in the on-call rotation with support from teammates
Take ownership of a scoped infrastructure project and deliver incremental improvements
Build working relationships across engineering and adjacent functions
Independently deliver infrastructure changes that improve reliability, performance, or security
Understand how infrastructure supports product and customer needs, and translate requirements into practical technical solutions
Contribute to operational excellence through runbooks, automation, and system improvements
Design, implement, and maintain cloud infrastructure using infrastructure-as-code
Collaborate with cross-functional partners to execute on infrastructure initiatives
Participate in an on-call rotation (one week every four weeks) and help maintain system reliability
Contribute to a positive team culture by sharing knowledge and supporting teammates
Continuously improve your technical skills and operational effectiveness

Requirements

What you’ll need

3+ years of experience working with Linux-based systems and cloud infrastructure
Hands-on experience with AWS, Terraform, Kubernetes, Datadog, Cloudflare, and OpenSearch
Experience operating and supporting production systems in an on-call environment
Familiarity with modern DevOps tooling and CI/CD pipelines (GitLab CI or GitHub Actions)
Experience delivering projects with dependencies across technical and non-technical teams
Strong understanding of reliability, observability, and secure infrastructure practices
Interest in secure-by-default infrastructure design and compliance requirements
Clear communicator and effective team collaborator
Willingness to participate in on-call rotation between 9am–9pm PT / 12pm–12am ET once every four weeks (Sunday–Monday).

Benefits

Comp & perks

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

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

LinuxAWSTerraformKubernetesRuby on RailsGraphQLDatadogCloudflareOpenSearchCI/CD

Soft Skills

clear communicatoreffective team collaboratorownershipknowledge sharingsupporting teammatesoperational excellencecontinuous improvement