Summer 2027 Internship- Software Engineering

Pacific Fusion; San Leandro (CA); On-site; USD 41,000 - 66,000; Full time

Benefits offered by this job

Mentorship from experienced engineers

Exposure to full product lifecycle

Collaborative learning environment

Lunch provided

Job summary

Pacific Fusion in San Leandro, CA is seeking a Software Engineering Intern for Summer 2027 to help build web-based UIs and backend services that support real-time fusion facility operations.

You will collaborate with controls engineers, scientists, and operators, write clean code, participate in reviews, and gain exposure to the full product lifecycle in a fast-paced, mission-driven environment.

Qualifications

• Pursuing a degree in Computer Science, Software Engineering, or a related field.
• Coursework or experience in web or backend programming.
• Familiarity with Go or Python.
• Understanding of client–server applications, APIs and data flow.
• SQL and NoSQL databases.

Responsibilities

• Develop and improve web-based UI for system status and health monitoring.
• Configure experiments and facility settings.
• Build backend services to serve real-time and historical data.
• Manage configuration, metadata, and system state.
• Interface with controls systems and data pipelines.
• Write clean, maintainable code and participate in code reviews.
• Test, debug, and validate software used in live environments.

Skills

Go

Python

Web backend

APIs & data flow

SQL & NoSQL

Education

Computer Science or related degree

Job description

Summer 2027 Internship- Software Engineering

About Pacific Fusion

Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy.

We are rapidly designing and building a pulser-driven inertial fusion system to achieve net facility gain (more fusion energy output than stored energy input). In parallel, we are developing the key components required to build affordable fusion systems.

Our plans are ambitious. We have raised over $900M so far from incredible investors, resourcing us to deliver on these plans. We are bringing together the best scientists, engineers, and operators from the fusion community, hard tech industry, and other sectors. We are united by a shared sense of urgency to provide clean power for the world, particularly managing climate change while meeting growing global energy demand. You can read more about us in this letter from our founders.

Why This Role Matters

As a Software Engineering Intern, you will help build the user interfaces and backend software systems that allow engineers, scientists and operators to run the fusion demonstration facility. You will work closely with controls engineers, scientists, and operators to develop software that presents real-time system state, manages configuration and data, and supports safe facility operations.

What You'll Do

• Develop and improve web-based user interfaces for:
• System status and health monitoring
• Experiment or facility configuration
• Alerts, events, and diagnostics
• Assist in building backend services that:
• Serve real-time and historical facility data
• Manage configuration, metadata, and system state
• Interface with controls systems and data pipelines
• Support integration between:
• UI applications, backend APIs, and facility systems
• Write clear, maintainable code and contribute to code reviews
• Help test, debug, and validate software used in live environments

What You Bring

• Pursuing a degree in Computer Science, Software Engineering, or a related field (Junior, Senior, or graduate student preferred)
• Coursework or experience in:
• Web or backend programming
• Familiarity with at least one of:
• Go or Python
• Basic understanding of:
• Client–server applications
• APIs and data flow
• SQL and NoSQL Databases

Additional Requirements:

• Able to work full time, onsite for a minimum of 12 consecutive weeks beginning in Mid May- Mid June 2027

Bonus Points For

• Experience with:
• React or other modern UI frameworks
• REST or event-based API
• Git and collaborative development
• Interest in:
• Industrial systems, automation, or controls
• Data visualization or real-time systems
• Exposure to:
• Containers (Docker)
• Time-series or telemetry data
• 6+ months of a previous internship, co-op, or academic project experience outside of normal classes
• GPA of 3.5 or above
• Basic experience with CAD Software, MATLAB, Python, or Excel

What We Offer

• Mentorship from experienced engineering professionals
• Exposure to the full product development lifecycle
• A collaborative and learning-focused work environment
• Daily catered lunch and unlimited snacks provided

Pay Range:

$30 - $48 USD

TOTAL COMPENSATION AND BENEFITS FOR ELIGIBLE EMPLOYEES

Equity plan

6% employer 401k matching

Generous paid time off (including sick leave, vacation, paid family leave)

Medical, Dental, and Vision insurance

Actual base salary offered will be determined by: experience, skills, and work location. This range is for base salary, our total compensation includes equity and benefits. We welcome you to apply even if your expectations are outside our listed range.

EQUAL OPPORTUNTITY

Pacific Fusion is committed to creating a diverse environment and is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Pacific Fusion is committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures and throughout employment. If you need assistance or any accommodation, please let us know.

This position may require access to information or technology that is subject to U.S. export control laws, such as ITAR or EAR. Under these regulations, we are required to ensure that such access is provided only to individuals who are classified as 'U.S. Persons.'This status includes U.S. citizens, U.S. nationals, lawful permanent residents (green card holders), and asylees and refugees with such status granted, not pending.