Senior Realtime Controls Software Engineer

Commonwealth Fusion Systems

. Develop mission-critical control algorithms .

Posted 11/9/2026full-timeDevens • Massachusetts • United StatesSenior💰 $107,000 - $160,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in developing mission-critical control algorithms and software for real-time systems, with proficiency in Python and at least one real-time control language. Skilled in integrating software into testbeds and improving tooling and processes across engineering environments.

Highest-signal resume keywords

Real-Time Control AlgorithmsPython ProgrammingC++ ProgrammingSoftware Development Lifecycle PracticesHardware-In-The-Loop (HITL) Development

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Control AlgorithmsSimulation ModelsData Analysis ToolsState EstimationProduction-Ready CodeIntegration TestingUnit TestingSoftware SolutionsTest PlansFunctional Requirements

Soft Skills

Dedication to SafetyCollaboration

Tools & Technologies

CI/CDGit Version ControlSoftware TestbedsHardware Testbeds

Industry Keywords

EngineeringIndustrial HazardsReal-Time Systems

Tech Stack

Tools & technologies

PythonRustC++

About the role

Key responsibilities & impact

Develop mission-critical control algorithms
Develop software to communicate with hardware sensors/actuators
Develop software infrastructure to operate Hardware-in-the-Loop (HITL) and software-only testbeds
Develop simulation models and model infrastructure for real-time and off-line high-fidelity simulations
Develop offline data analysis tools
Help define and execute end-to-end and other integrated test cases and test plans to validate SPARC control software
Design and implement state estimation and control algorithms, models, and simulation frameworks
Write 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 tooling and processes across the company

Requirements

What you’ll need

Bachelor's degree in a relevant engineering field (computer science, computer engineering, electrical engineering, industrial engineering, etc.)
7+ 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.)
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

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