Senior Performance Engineer: Scale, Reliability & AI Testing

Energy Jobline ZR

Norwalk (CT)

On-site

USD 120,000 - 160,000

Full time

11 days ago

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Benefits offered by this job

Insurance Plans (Medical, Life)
Pension/401K/RSP
Competitive Bonus
Mobility Allowance
Tuition Reimbursement
Company Holidays
Volunteering time
And More…..

Job summary

Subway is seeking a Sr. Performance Engineer to own the enterprise-wide Performance Engineering function across all digital platforms, including web, mobile, kiosk, POS, loyalty, and payments.

This role acts as a horizontal shared service partnering with Site Reliability, Observability, DevOps, and Architecture to improve reliability and resilience in accelerated delivery cycles. You will design and execute load, stress, endurance, and scalability tests, define baselines and SLO/SLI KPIs, and

Qualifications

  • 5–7+ years in performance engineering at enterprise scale.
  • Hands-on with performance testing tools and observability platforms.
  • Experience CI/CD integration and chaos engineering.
  • Proficiency in Java, JavaScript, or Python; cloud experience (AWS/Azure).

Responsibilities

  • Lead enterprise Performance Engineering as a shared service across platforms.
  • Design and run performance tests; establish baselines and KPIs.
  • Embed automated validation into CI/CD; report findings.
  • Partner with SRE/DevOps to validate resilience and run chaos experiments.
  • Provide go/no-go releases and executive reporting.
  • Incorporate AI-assisted workflows and maintain artifacts.

Skills

Performance engineering
SRE collaboration
CI/CD integration
Automation scripting
Stakeholder leadership

Education

Bachelor's degree in CS/Engineering

Tools

JMeter
k6
LoadRunner
Dynatrace
Azure DevOps

Job description

Subway is seeking a Sr. Performance Engineer to own the enterprise-wide Performance Engineering function across all digital platforms, including web, mobile, kiosk, POS, loyalty, and payments.

This role acts as a horizontal shared service partnering with Site Reliability, Observability, DevOps, and Architecture to improve reliability and resilience in accelerated delivery cycles. You will design and execute load, stress, endurance, and scalability tests, define baselines and SLO/SLI KPIs, and

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