Horizon3.ai

5 days ago

Senior Engineering Manager, Site Reliability

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 12 hours agoStatus: Live

Job Summary

Build and lead a Site Reliability (SRE) function from scratch, hiring a team in year one and professionalizing incident management across SRE and application feature teams. Drive engineering excellence through design/code reviews and blameless retrospectives, while balancing incident response with a roadmap for observability and reliability engineering initiatives. Partner with product and engineering leaders to define SLOs, improve operational runbooks, and establish a reliability culture through training and process adoption.

Location: United States

Workplace: Remote

Employment Type: Full time

Job Function: DevOps, Cloud & Infrastructure

Seniority: Sr. Manager level

Key Responsibilities

•Establish an SRE function and build the SRE team from scratch, hiring site reliability staff and growing the team to 4–6 in year one.
•Professionalize incident management by defining and documenting incident processes for SRE and application feature teams, including supporting tool and vendor decisions.
•Drive reliability culture across engineering through training and process adoption, alongside quality practices like design reviews, code reviews, and blameless retrospectives.
•Balance incident response with execution on a roadmap of observability and reliability engineering initiatives.
•Hire and directly manage site reliability engineers, including recruiting/onboarding, mentoring/coaching, and retaining high performers in a remote environment.

Travel: Low travel

Pay and Benefits

Salary: USD 260,000 - 280,000 annually

Perks:Health InsuranceVisionDentalParental LeaveRemote WorkEquityPaid Leave

Key Requirements

•Demonstrated experience leading hiring and growing SRE or Infrastructure teams, including incident management processes, on-call programs, SLO/SLA definition, and operational runbooks.
•Previous career experience as a Site Reliability Engineer, comfortable being hands-on while building and hiring the team.
•Deep hands-on observability experience including application performance management, logs and traces, golden signals, and service-specific metrics.
•Experience selecting and deploying incident management tooling (e.g., PagerDuty, FireHydrant) and creating vendor selection decision frameworks.
•Strong working knowledge of a major cloud provider (AWS, GCP, or Azure), including infrastructure, networking, managed services, IAM, and cost management (AWS preferred).

Skills:LeadershipCommunicationMentoring

Tech Stack:AWSGCPAzurePagerDutyFireHydrantIAMLogsTracesObservabilitySLOSLAOn-callRunbooksIncident managementDesign reviewsCode reviewsBlameless retrospectivesRFCsArchitecture decision records

Company Brief

Horizon3.ai

Builds NodeZero®, an autonomous penetration-testing platform that continuously finds, prioritizes, and verifies exploitable vulnerabilities across on-premises, cloud, and hybrid environments to help organizations reduce security risk.

Industry: Cybersecurity

Company Size: Large (251 to 1,000 employees)

Growth: Scaleup

Funding: Series D

Headquarters: San Francisco, United States

Founded: 2019

Glassdoor: 4.9

Website LinkedIn Glassdoor

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Horizon3.ai

5 days ago

Senior Engineering Manager, Site Reliability

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI

Last checked: 12 hours agoStatus: Live

Job Summary

Location: United States

Workplace: Remote

Employment Type: Full time

Job Function: DevOps, Cloud & Infrastructure

Seniority: Sr. Manager level

Key Responsibilities

•Establish an SRE function and build the SRE team from scratch, hiring site reliability staff and growing the team to 4–6 in year one.
•Professionalize incident management by defining and documenting incident processes for SRE and application feature teams, including supporting tool and vendor decisions.
•Drive reliability culture across engineering through training and process adoption, alongside quality practices like design reviews, code reviews, and blameless retrospectives.
•Balance incident response with execution on a roadmap of observability and reliability engineering initiatives.
•Hire and directly manage site reliability engineers, including recruiting/onboarding, mentoring/coaching, and retaining high performers in a remote environment.

Travel: Low travel

Pay and Benefits

Salary: USD 260,000 - 280,000 annually

Perks:Health InsuranceVisionDentalParental LeaveRemote WorkEquityPaid Leave

Key Requirements

•Demonstrated experience leading hiring and growing SRE or Infrastructure teams, including incident management processes, on-call programs, SLO/SLA definition, and operational runbooks.
•Previous career experience as a Site Reliability Engineer, comfortable being hands-on while building and hiring the team.
•Deep hands-on observability experience including application performance management, logs and traces, golden signals, and service-specific metrics.
•Experience selecting and deploying incident management tooling (e.g., PagerDuty, FireHydrant) and creating vendor selection decision frameworks.
•Strong working knowledge of a major cloud provider (AWS, GCP, or Azure), including infrastructure, networking, managed services, IAM, and cost management (AWS preferred).

Skills:LeadershipCommunicationMentoring

Tech Stack:AWSGCPAzurePagerDutyFireHydrantIAMLogsTracesObservabilitySLOSLAOn-callRunbooksIncident managementDesign reviewsCode reviewsBlameless retrospectivesRFCsArchitecture decision records

Company Brief

Horizon3.ai

Industry: Cybersecurity

Company Size: Large (251 to 1,000 employees)

Growth: Scaleup

Funding: Series D

Headquarters: San Francisco, United States

Founded: 2019

Glassdoor: 4.9

Website LinkedIn Glassdoor