JavaScriptCore Manager

Cupertino Until 9/22/2026 First posted July 24, 2026 Last posted July 24, 2026
Job description

The JavaScript team seeks a Software Engineering Manager with deep compiler and virtual machine expertise, ready to support the world's fastest and best JavaScript and WebAssembly VM. The JavaScriptCore framework powers many system applications and services, including WebKit clients like Safari, Mail, and Books; and direct clients like iTunes and Siri. This organization designs and implements changes to deliver improved security, better performance, and new JS and WASM language features. Weʼre looking for leaders with outstanding problem solving skills, a passion for quality, and the desire to push the web forward!

Description

The role of the JavaScriptCore Manager is to manage individual contributors, cross-functional projects, and potentially other projects in order to develop new features and evolve the JavaScriptCore VM to deliver better performance, improved security, new language features, better developer tools support, and other improvements. Additional responsibilities may include driving low-level security and performance improvements in WebKit and throughout Apple’s operating systems.

Minimum Qualifications

BS in computer science or equivalent (equivalent credential or software exeprience)
Experience with mentoring, career development, project planning, and executive reporting!
Detailed knowledge of system development in C++
Excellent debugging, critical thinking, and performance analysis skills
Experience with compilers, parsers, interpreters, and virtual machines

Preferred Qualifications

Detailed knowledge of the JavaScript language
Detailed knowledge of the WebAssembly language
Knowledge of best practices in embedded software security
Experience with garbage collectors
Experience with open source software development

About this role

Summary

Manage JavaScriptCore VM development, optimize performance, security, and features.

Job title

JavaScriptCore Manager

Experience level

senior level

Industry

software

Location requirements

Candidates in Cupertino or remote work allowed

Salary

Not specified

Management role

Yes

Skills & keywords

Required skills

C++debuggingcritical thinkingperformance analysisvirtual machines

Preferred skills

JavaScriptWebAssemblysecuritygarbage collectorsopen source

Specializations

compilervirtual machinewebassemblysecurityperformance
Locations

Structured locations inferred from the posting.

Cupertino, CA, USA

Remote City