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Gigascale Capital portfolio jobs | Jobs with Startups

Gigascale Capital

Gigascale Capital

Portfolio companies and open roles backed by Gigascale Capital.

2 startups

146 open jobs

Venture capital

Jobs with Startups © 2026

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146 portfolio jobs

Radiant· Energy

Full-time

Nuclear Engineer, Sensors

On-site

Engineering

El Segundo, CA

1d ago

On-site

Full-time

Commonwealth Fusion

Full-time

Senior Manager, Manufacturing Engineering

On-site

Corporate Operations

Devens, MA

$150k - $225k/yr

2d ago

On-site

Full-time

Radiant· Energy

Full-time

Software Engineer (HIL)

On-site

Engineering

El Segundo, CA

1w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Hiring Day for Production Technicians: Nights & Weekend Shifts + Differential Pay

On-site

Job Fair

Devens, MA

$30 - $41/hr

1w ago

On-site

Full-time

Radiant· Energy

Full-time

Senior Structural Engineer – Concrete & Precast Design

On-site

Engineering

El Segundo, CA

1w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Manager, Manufacturing Engineering - Third Shift

On-site

Corporate Operations

Devens, MA

1w ago

On-site

Full-time

Radiant· Energy

Full-time

Risk & Compliance Lead

On-site

Operations

El Segundo, CA

1w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Facilities and Maintenance Electrician

On-site

Corporate Operations

Devens, MA

1w ago

On-site

Full-time

Radiant· Energy

Full-time

Structured Finance Manager

On-site

Operations

El Segundo, CA

1w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Procurement Coordinator

On-site

Corporate Operations

Devens, MA

1w ago

On-site

Full-time

Radiant· Energy

Full-time

Senior Nuclear Thermal-Hydraulics Engineer

On-site

Engineering

El Segundo, CA

1w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Operations Planner

On-site

Corporate Operations

Devens, MA

2w ago

On-site

Full-time

Radiant· Energy

Full-time

Nuclear Engineer, Core Physics

On-site

Engineering

El Segundo, CA

2w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Staff Multiphysics Modeler

On-site

R&D

Devens, MA

2w ago

On-site

Full-time

Radiant· Energy

Full-time

Technical Recruiter - 2026 New Graduate

On-site

Operations

El Segundo, CA

2w ago

On-site

Full-time

Commonwealth Fusion

Contract

Technician - Welding and Assembly - Contract

On-site

SPARC Tokamak Team

Devens, MA

2w ago

On-site

Contract

Radiant· Energy

Full-time

Senior Software Engineer, HPC DevOps

On-site

Engineering

El Segundo, CA

2w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Supply Chain Operations Coordinator - Third Shift

On-site

Corporate Operations

Devens, MA

2w ago

On-site

Full-time

Radiant· Energy

Full-time

Strategic Sourcing Manager

On-site

Operations

El Segundo, CA

2w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Material Coordinator - Second Shift

On-site

Corporate Operations

Devens, MA

2w ago

On-site

Full-time

Radiant· Energy

Full-time

Regulatory Program Manager

On-site

Operations

El Segundo, CA

2w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Staff Quality Engineer - Advanced Metrology Integration

On-site

Corporate Operations

Devens, MA

3w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Security Technology Specialist

On-site

Corporate Operations

Devens, MA

3w ago

On-site

Full-time

Radiant· Energy

Full-time

Mechanical Engineer, Motor Design - 2026 New Graduate

On-site

Engineering

El Segundo, CA

3w ago

On-site

Full-time

Radiant· Energy

Full-time

Senior Test Engineer, Mechanical/Fluids

On-site

Engineering

El Segundo, CA

3w ago

On-site

Full-time

Commonwealth Fusion

Contract

Assembly Process Engineer - Contract

On-site

SPARC Tokamak Team

Devens, MA

3w ago

On-site

Contract

Commonwealth Fusion

Full-time

Manufacturing Engineer - Second Shift

On-site

Corporate Operations

Somerville, MA

3w ago

On-site

Full-time

Radiant· Energy

Full-time

Test Engineer, Mechanical/Fluids

On-site

Engineering

El Segundo, CA

4w ago

On-site

Full-time

Commonwealth Fusion

Full-time

Vice President of Manufacturing

On-site

Corporate Operations

Devens, MA

4w ago

On-site

Full-time

Radiant· Energy

Full-time

Business Development Manager

On-site

Operations

El Segundo, CA

1mo ago

On-site

Full-time