Senior Performance Engineer - End-to-End Impact & Mentorship

Egreenservices; Simi Valley (CA); On-site; USD 106,000 - 157,000; Part time

Job summary

Emerson in Simi Valley seeks a Performance Engineer who thrives on breaking the status quo. You’ll own performance aspects of JavaScript apps, mentor mid-level developers, and collaborate across product and design to ship features end-to-end.

This role offers a challenging freelance rhythm with a strong emphasis on ownership, Ansible tasks in the CA region, memory profiling, and close partnership with QA to catch regressions early.

Qualifications

• At least 5 years of standing behind your own estimates.
• Practical command of Teamwork, with bonus points for Node.js.
• Working understanding of both .NET Core and Teamwork in real-world settings.
• A writer's ear for tone in a high-stakes email.
• Strong rapport-building skills and a genuinely positive presence.

Responsibilities

• Mentor the mid-level cohort through their first real JavaScript on-call at Emerson
• Profile and refactor legacy code to reduce technical debt over time
• Partner with QA to define test coverage and catch regressions early
• Pull Emerson's Ansible stack out of the CA region before the migration deadline
• Profile Agile memory use and chase down the leaks crashing Simi Valley nodes
• Collaborate with product and design teams to ship features end to end
• Sketch Node.js sequence diagrams that make the technology flow obvious to everyone
• Carry the Facilitation platform work that makes Emerson's next CA expansion boring

Skills

Teamwork

Node.js

.NET Core

Email tone

Rapport-building

Tools

Teamwork

Job description

Emerson in Simi Valley seeks a Performance Engineer who thrives on breaking the status quo. You’ll own performance aspects of JavaScript apps, mentor mid-level developers, and collaborate across product and design to ship features end-to-end.

This role offers a challenging freelance rhythm with a strong emphasis on ownership, Ansible tasks in the CA region, memory profiling, and close partnership with QA to catch regressions early.