Principal Software Engineer

Focused Energy Inc.

. Define and maintain the end-to-end Core Software architecture for the fusion power plant .

Posted 9/23/2026full-timeRemote • Texas • United StatesLeadWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and implementing Core Software architecture for complex industrial systems, with strong skills in C++ and Python. Capable of leading technical decisions, mentoring engineers, and ensuring adherence to standards for reliability, security, and documentation.

Highest-signal resume keywords

C++ ProgrammingPython ProgrammingControl Software DesignAutomated Calibration FacilitiesData Handling and Storage

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Core Software ArchitectureSoftware Design and ImplementationHardware and Software InterfacesSystem-Level TroubleshootingTesting and Observability PracticesFault ToleranceSecurity PracticesHMI DesignAPI ConventionsConfiguration Management

Soft Skills

Technical LeadershipMentoringDecision-MakingCollaboration

Tools & Technologies

AI-Assisted Software DevelopmentData PipelinesHigh-Throughput Data AcquisitionReal-Time Control Systems

Industry Keywords

Fusion Power PlantPlasma SoftwareNuclear PowerHigh-Energy PhysicsScientific Facilities

Tech Stack

Tools & technologies

PythonC++

About the role

Key responsibilities & impact

Define and maintain the end-to-end Core Software architecture for the fusion power plant
Design and implement critical Core Software components using C++ and Python
Define interfaces between software, control hardware, diagnostics, plant equipment, data systems, and operator tools
Design automated calibration facilities and workflows producing traceable and repeatable results
Set standards for architecture, coding, testing, observability, documentation, release, reliability, security, and fault tolerance
Lead technical decisions across teams, mentor engineers, resolve trade-offs, and grow into a technical lead
Report to the Head of Software

Requirements

What you’ll need

Extensive experience designing and implementing control software for complex physical or industrial systems
Extensive experience with hardware and software interfaces, including device integration and system-level troubleshooting
Experience designing and implementing automated calibration facilities or workflows
Strong experience with data handling, data pipelines, metadata, and reliable data storage
Experience designing and implementing HMI for operators or technical users
Strong software design and implementation skills in C++, Python, or similar languages
Ability to define architecture for complex, mission-critical systems under changing requirements and strict physical constraints
Experience applying thorough testing, observability, reliability, fault tolerance, security, and documentation practices
Experience with software for plasma, nuclear power, high-energy physics, or scientific facilities is nice-to-have
Experience with real-time or distributed control systems and high-throughput data acquisition is nice-to-have
Experience defining shared frameworks, API conventions, configuration management, or communication systems is nice-to-have
Experience writing architecture decision records or technical proposals and leading architecture reviews is nice-to-have
Experience growing into a department-level technical lead or coaching senior engineers is nice-to-have
Fluency with AI-assisted software development, or strong enthusiasm for using approved AI tools responsibly, is nice-to-have

Benefits

Comp & perks

Company ownership in the form of stock options
Medical, dental, and vision insurance plans active from the 1st day of employment for employees and enrolled dependents
Unlimited PTO
Healthy snacks and drinks
401(k) plan with employer matching up to 4% of employee contribution
State-of-the-art Windows or Apple laptop
Keyboard, mouse, and headset
Regular team-building and company events
Career development opportunities
Collaborative international work environment