Senior Rust Developer

Job Title: Contractor – Rust Software Engineer (Long-Term Engagement)

Company: FS Studio

Location: Remote (U.S. only)

Engagement Type: Contract (long-term)
Apply link: https://jobs.ashbyhq.com/fs-studio/98540566-5fbe-4eba-8ed9-e2d408d825f4/application

About FS Studio

FS Studio is a forward-thinking software engineering company tackling some of the toughest technical challenges across aerospace, robotics, AI, and embedded systems. We thrive at the intersection of deep engineering rigor and startup agility—helping visionary partners bring bold ideas to life.

Position Overview

We are seeking a U.S.-based Software Engineer with expertise in C++ and Rust for a long-term contract engagement. This role centers on porting a large real-time embedded Guidance, Navigation, and Control (GNC) codebase from C++ to Rust. You’ll be working on software that directly supports advanced aerospace systems, translating mission-critical functionality into a modern, high-assurance Rust environment.

This is a unique opportunity to combine aerospace-grade precision with Rust’s cutting-edge capabilities, all while contributing to software that matters.

Responsibilities

• Translation & Development

  • Translate existing C++ source code into Rust with strict adherence to provided architecture and coding standards.

  • Ensure functional equivalence, determinism, and performance are preserved.

• Testing & Verification

  • Develop and run comprehensive unit tests to validate accuracy and reliability.

  • Demonstrate compliance with established testing standards and expected results.

• Ongoing Support

  • Provide post-translation maintenance and optimization of the Rust codebase.

  • Collaborate closely with FS Studio and partner teams to keep the software current, efficient, and robust.

Qualifications

• Required

  • Strong proficiency in modern C++ and hands-on Rust development experience.

  • Background in real-time embedded systems (ideally GNC, aerospace, or robotics).

  • Proven track record of building standards-compliant, production-grade code.

  • Solid experience with unit testing and validation of critical software.

  • Strong math/controls background (linear algebra, dynamics, or control theory a plus).

  • Excellent problem-solving, communication, and collaboration skills.

  • MUST be a U.S. Person to meet ITAR compliance.

  • Must be located in the United States.

  • No need for visa sponsorship now or in the future to work in the United States.

• Preferred

  • Prior experience in aerospace, defense, or other mission-critical software environments.

  • Familiarity with safety-critical or flight software development processes.

  • Contributions to Rust open-source projects or production Rust systems.

    Inquiries to jobs@fsstudio.com