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Senior Internship Jobs in California (NOW HIRING)

Sonoco

Operations- Internship

Oakdale, CA

$5.1K/mo

Sonoco's internship program immerses students in the manufacturing and packaging industries ... Senior $4,350 * Junior $4,100 * Sophomore $3,900 * Freshman $3,700 Monthly base salary for ...

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Ruthchek

Internship Program

San Francisco, CA · On-site

$27.55/hr

They work under the guidance of senior engineers and with other interns. The intern program includes mentoring, educational seminars, construction site visits, and company social events. This paid ...

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Senior Internship information

What is a senior internship?

A Senior Internship is a structured work experience program designed for students in their final year of high school, college, or university. These internships provide hands-on experience in a professional setting, allowing students to apply their academic knowledge to real-world tasks. Senior internships often serve as a bridge between education and full-time employment, helping participants develop industry-specific skills and professional networks. They can be paid or unpaid and may sometimes lead to job offers after graduation.

What are the key skills and qualifications needed to thrive as a senior intern?

To thrive as a Senior Intern, you need a solid educational background in your field, relevant work or project experience, and the ability to quickly learn new concepts. Familiarity with industry-specific software, productivity tools like Microsoft Office or Google Workspace, and sometimes basic project management systems is often expected. Strong communication, initiative, and adaptability set outstanding Senior Interns apart, allowing them to contribute meaningfully and build relationships. These skills and qualities are critical for effectively supporting teams, gaining valuable experience, and maximizing the internship’s growth opportunities.

What are some common challenges faced by senior interns, and how can they overcome them?

Senior Interns often encounter the challenge of balancing advanced responsibilities with ongoing learning. They may be expected to take on leadership roles within projects or mentor newer interns, which can feel daunting. To overcome these challenges, it's helpful to proactively seek feedback, communicate openly with supervisors, and leverage time management skills. Building strong relationships with team members and asking for mentorship opportunities can also ease the transition into more senior tasks and help interns make a lasting impact.

What is the difference between Senior Internship vs Data Analyst Internship?

AspectSenior InternshipData Analyst Internship
Required CredentialsTypically pursuing or recent graduate, some relevant courseworkLikewise, often students or recent grads with basic data skills
Work EnvironmentProfessional office setting, collaborative teamsSimilar office environment, focus on data projects
Employer & Industry UsageUsed across industries for advanced internship rolesCommon in tech, finance, healthcare sectors
Search & Comparison IntentPeople comparing internship levels or seeking advanced internship rolesPeople looking for entry-level data experience

In summary, a Senior Internship typically involves more advanced coursework or experience and may target students nearing graduation, while a Data Analyst Internship is more focused on gaining foundational data skills. Both are valuable entry points into data-related careers but differ in experience level and expectations.

What are the most commonly searched types of Senior jobs in California?

The most popular types of Senior jobs in California are:

What are popular job titles related to Senior Internship jobs in California?

For Senior Internship jobs in California, the most frequently searched job titles are:

What job categories do people searching Senior Internship jobs in California look for?

The top searched job categories for Senior Internship jobs in California are:

What cities in California are hiring for Senior Internship jobs?

Cities in California with the most Senior Internship job openings:

Senior Internship jobs near you
Infographic showing various Senior Internship job openings in California as of August 2026, with employment types broken down into 10% Internship, 61% Full Time, 26% Part Time, 1% Temporary, and 2% Contract. Highlights an 84% Physical, 3% Hybrid, and 13% Remote job distribution.

Summer 2027 Internship - Software Engineering

General Matter

Los Angeles, CA • On-site

$32 - $46/hr

Temporary, Internship

Posted 13 days ago

Job description

About the company
General Matter enriches uranium.
We are designing, building, and operating the world's lowest-cost enrichment services, here in the US.
In the process, we are restoring America's ability to produce nuclear fuel to power AI, advanced manufacturing and critical industries our country relies on to remain competitive.
Fuel drives the cost of advanced reactor electricity production, and enrichment drives the cost of the fuel that advanced reactors consume. Reliable, low-cost enrichment is the catalyst for the nuclear Renaissance now under way.
Our mission is to make nuclear not only the cleanest and safest source of baseload power, but also the most affordable. We believe abundant nuclear energy will lead to a post-scarcity society.
We were incubated inside Founders Fund, like Anduril and Palantir before us, and are backed by over a dozen of the world's top venture capital firms.
Our lean, world-class team of engineers and operators is applying a first-principles approach to solving the problem of nuclear fuel production.
We are a mission-driven company with a culture of urgency, accountability, and transparency.
Help us build a high-energy society by making the cleanest, safest form of baseload energy the most affordable.
About This Role
As a General Matter Software Engineering Intern, you will help develop performant, safe, and high-quality software. Your work will support code where reliability, performance, and safety are of utmost importance. You will work closely with cross-functional teams, including electrical engineers, software engineers, chemical engineers, manufacturing engineers, nuclear engineers, materials scientists, and physicists. If you seek high-impact work and are excited by fast-paced, intense, Skunkworks-style projects, we encourage you to reach out to join our team.
We're hiring interns across three focus areas:
  • Backend interns will help build high-performance services and APIs that coordinate control systems, manage state across distributed hardware, and expose interfaces for monitoring and operations.
  • Distributed systems interns will support the development of fault-tolerant coordination systems, real-time data pipelines processing high-throughput sensor telemetry, and the infrastructure that keeps critical systems running reliably at scale.
  • Tooling interns will help build the developer platforms, CI/CD systems, observability tools, and deployment infrastructure that let our team iterate rapidly and safely in a production environment where mistakes have physical consequences.

Responsibilities
  • Assist in designing and implementing high-performance software systems in C++ and Python, with a focus on reliability and maintainability.
  • Support the architecture of solutions, contributing to decisions around system design, performance trade-offs, and technology selection.
  • Participate in technical design reviews and code reviews, learning and helping uphold engineering best practices across the team.
  • Help build and maintain automated testing and CI/CD pipelines to support software quality at scale.
  • Work closely with senior engineers, contributing to progress on complex, ambiguous technical problems.

Basic Qualifications
  • Current undergraduate or graduate student pursuing a degree in Computer Science, Engineering, or a related discipline.
  • Proficiency in C++ and/or Python.
  • Strong CS fundamentals, such as algorithms, data structures, concurrency, and system design.
  • Collaborative team member who thrives in fast-paced, multidisciplinary environments and is eager to learn.

Preferred Skills and Experience
  • Exposure to distributed systems, observability tooling, or infrastructure as code.
  • Experience with Python ecosystems for data pipelines, automation, or backend services.
  • Coursework or project experience with C++ performance optimization, profiling, or low-level systems programming.
  • Familiarity with Linux system programming, including threading models, IPC, or low-level kernel interfaces.
  • Evidence of exceptional ability (prior projects, portfolio of work, completed products, etc).

Additional Requirements
  • Ability to work extended hours and weekends as necessary.

Equal Opportunity Employer
General Matter is an Equal Opportunity Employer; employment with General Matter is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status.
Compensation and Benefits
The hourly pay range for this internship is $32-$46 per hour, depending on the candidate's current standing in school (i.e. sophomore, senior).
Interns will receive a monthly housing stipend and are eligible for overtime pay. Please note that the stated hourly range is an estimate and may be adjusted based on market conditions, business needs, or other factors.

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