Realtime Controls Software Engineer

Commonwealth Fusion Systems

. Design and implement real-time control algorithms .

Posted 11/12/2026full-timeDevens • Massachusetts • United StatesMid-LevelSenior💰 $107,000 - $160,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and implementing real-time control algorithms, developing software for hardware integration, and executing comprehensive testing strategies. Proficient in Python and at least one real-time control language, with a strong understanding of modern software development practices and safety compliance.

Highest-signal resume keywords

Real-Time Control AlgorithmsPython ProgrammingHardware-In-The-Loop TestbedsSoftware Development Lifecycle PracticesData Analysis Tools

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Real-Time State EstimationControl AlgorithmsSoftware Development LifecycleUnit TestingIntegration TestingC++ ProgrammingRust ProgrammingSimulation ModelsData AnalysisFunctional Requirements Gathering

Tools & Technologies

LinuxGit Version ControlCI/CDNetworking (IP/UDP)Production Tools

Certifications & Qualifications

Bachelor's Degree in Engineering

Industry Keywords

Safety ComplianceIndustrial HazardsControlled TechnologiesTest PlansMission-Critical Systems

Tech Stack

Tools & technologies

LinuxPythonRustC++

About the role

Key responsibilities & impact

Design and implement real-time control algorithms
Develop software to communicate with hardware sensors/actuators
Develop software infrastructure for Hardware-in-the-Loop (HITL) and software-only testbeds
Develop simulation models and model infrastructure for real-time and high-fidelity offline simulations
Develop offline data analysis tools
Define and execute end-to-end and integrated test cases and test plans to validate SPARC control software
Write high-quality, production-ready code for mission-critical real-time systems
Collect functional requirements from customers and produce software solutions
Integrate software into software testbeds, hardware testbeds, and production tools
Improve company-wide software tooling and processes
Work as a hands-on technical contributor within the Software Engineering team

Requirements

What you’ll need

Bachelor's degree in a relevant engineering field (computer science, computer engineering, electrical engineering, industrial engineering, etc.)
5+ years relevant experience
Professional experience writing real-time state estimation and control algorithms
Experience with modern software development lifecycle practices (CI/CD, git version control, unit testing, integration testing, etc)
Proficiency with Python
Proficiency with at least one real-time control language (C++, Rust, etc)
Experience with Hardware-in-the-Loop testbeds and software-only testbeds for validating control software
Experience writing models to validate software
Familiarity with Linux
Familiarity with general networking (IP/UDP)
Perform activities such as typing, standing, sitting, etc. for extended periods of time
Dedication to safety to mitigate industrial hazards that may include heat, cold, noise, fumes, strong magnets, lead (Pb), high voltage, high current, pressure systems, and cryogenics
Willingness to occasionally travel or work required nights/weekends/on-call
Compliance with U.S. laws concerning the export of controlled or protected technologies or information

Benefits

Comp & perks

Competitive compensation with equity
13 Company-wide Holidays
Flexible vacation days
10 sick days
Generous parental leave policy
Health, dental, and vision insurance
401(k) with employer matching
Professional growth opportunities
Team-building activities