MacOS Software Engineer with Security Clearance

MacOS Software Engineer

Fitchburg, MA (Relocation Offered Hybrid After First Month)

Full-Time Direct Hire

$130,000 - $150,000 base salary (DOE)

U.S. based Visa Sponsorship Available (90-day guarantee) About the Opportunity:

Argo Recruiting is partnered with one of the most respected employee-owned engineering organizations in Northern Massachusetts, known for its longevity, top-tier benefits, and challenging, rewarding work. We're helping them hire a MacOS Software Engineer to join their elite development team working on scientific and engineering applications. This is a rare opportunity for a developer with deep experience in Apple platforms, algorithmic problem-solving, and a passion for building tools that make a real-world impact. The company boasts an outstanding retention rate, exceptional work-life balance, and a team of brilliant engineers who stay for decades. What You'll Do: Design and develop macOS applications, libraries, and frameworks used for scientific or engineering purposes.

Work closely with product and engineering teams to deliver high-performance, multithreaded desktop tools.

Develop UIs with Cocoa/Xcode and optimize using Swift and optionally Objective-C.

Implement robust mathematical and algorithmic models in code.

Contribute to full product lifecycle: from architecture to release and support. What We're Looking For:

5+ years of experience developing for Apple/macOS platforms using Swift and Xcode.

Experience with multithreaded / parallel processing applications.

Strong foundation in mathematics, data structures, and algorithms.

Working knowledge of Objective-C is a plus.

Experience with Cocoa, Metal, or API Toolkits preferred.

Bachelor's degree in Computer Science, Engineering, or a STEM-related field strongly preferred.

Passion for building intuitive and performance-driven user interfaces. Why You'll Love This Role: Employee-Owned Company with 50+ years of success. Incredible benefits - consistently ranked as one of the best packages in the industry. Challenging and meaningful work - no mundane business logic here. Hybrid work model after the first month on-site. Relocation Assistance Available. Visa sponsorship considered for strong candidates. Interview Process:

Initial Video Interview

Technical Video Interview

Half-Day Onsite Final Interview Ready to solve challenging problems in a world-class engineering team?

Permanent