United States Remote (Country) Full-time

EX Squared is hiring a Firefox OS Integration Engineer, Mac OS Engineering (Remote - US)

About the Role

Jobgether is hiring a Firefox OS Integration Engineer for its Mac OS Engineering team. You’ll focus on delivering a seamless, high-quality user experience for Firefox and other Gecko-based products on macOS, working on OS integration, stability, performance, and security improvements in a distributed environment.

What You'll Do

  • Develop, test, and deliver fixes and new features for Firefox on macOS to enhance performance, security, and user experience.
  • Investigate crash reports, user-submitted bugs, and system-level issues to improve software stability and reliability.
  • Work with the open-source Mozilla codebase across multiple languages including C, C++, Rust, Objective-C, JavaScript, and HTML/CSS.
  • Collaborate with distributed teams, participating in design discussions, planning, and code reviews to ensure alignment and quality.
  • Document design choices and technical solutions to support knowledge sharing and foster team learning.
  • Support OS integration tasks such as sandboxing, crash reporting, and implementing macOS-specific features.

What We're Looking For

  • A degree in Computer Science or a related field, or equivalent professional experience.
  • Experience in systems programming with C, C++, Objective-C, or Rust.
  • Knowledge of web technologies such as JavaScript, HTML, and CSS.
  • Strong problem-solving, debugging, and analytical skills.
  • Effective written and verbal communication skills and a collaborative mindset.
  • Ability to thrive in a distributed team environment and contribute effectively across time zones.

Nice to Have

  • Familiarity with macOS application development, including native frameworks like AppKit or Cocoa.

Technical Stack

  • Languages: C, C++, Rust, Objective-C, JavaScript, HTML, CSS
  • Platform & Frameworks: macOS, AppKit, Cocoa

Benefits & Compensation

  • Competitive base salary with location-based tiers: US Tier 1 Locations $113,000–$164,000 USD; Tier 2 $102,000–$149,000 USD; Tier 3 $95,000–$138,000 USD.
  • Generous performance-based bonus plans.
  • Comprehensive health, dental, and vision coverage.
  • Robust retirement contributions with immediate vesting.
  • Quarterly wellness days and country-specific holidays plus birthday day off.
  • Home office stipend and annual professional development budget.
  • Paid parental leave and employee referral bonuses.
  • Flexible, distributed work environment and collaborative culture.

Work Mode

This is a fully remote position for candidates located within the United States.

Jobgether is an equal opportunity employer.

Required Skills
CC++RustObjective-CJavaScriptHTMLCSSmacOSAppKitCocoaFirefox OSSystems ProgrammingCross-platform DevelopmentBrowser EngineEmbedded Systems
Visa expiring soon?

Extend or switch without leaving Thailand

Running out of time on your current visa? SVBL identifies your best option — extension, category switch, or long-term visa — and handles the entire process.

Visa extensions & category switches
LTR & DTV visa applications
90-day reporting managed
Overstay prevention
Check your options
Prevent overstay issues
About company
EX Squared

Technology company focused on IT and software solutions

Visit website
Job Details
Category mobile
Posted 4 months ago