HiringCafe
Join our community

50 software engineer internship jobs at 29 companies in Fullerton, CA

3w
Save
Mark Applied
Hide
Software Engineer I, Mission Software
Long Beach, California, United States
$111k-$157k/yr OnsiteFull Time
Vast
Vast: Develops and operates commercial artificial-gravity space stations.
1+ YOEBachelor's in CS/math/engineering required; 1+ year academic/internship software experience preferred. Experience with full-stack development, APIs, containers, time-series data, and modern web frameworks.
Docker, Kubernetes, React, Next.js, Vue, GraphQL, REST, RPC, Node.js, OAuth, Terraform, Helm, SQL, Monitoring, Observability, Instrumentation
Job PostingView all
2w
Save
Mark Applied
Hide
Software Engineer
Colorado Springs or Irvine or Longmont or Fremont or Rochester or San Jose
$111k-$148k/yr OnsiteFull Time
Western Digital
Western DigitalNASDAQ: WDC: Design and manufacture data storage devices and systems.
0+ YOEPursuing or recent Bachelor's/Master's in a technical field; experience with C/C++, Python, Java, Go, SQL, or JavaScript through coursework or internships; familiarity with software fundamentals, debugging, and development tools.
C, C++, Python, Java, Go (Golang), SQL, JavaScript, Microsoft Office, Git, Linux, IDEs
Job PostingView all
4d
Save
Mark Applied
Hide
Entry-Level Software Engineer
Dallas or Seattle or Houston or San Francisco or Chicago or Philadelphia or El Segundo or Atlanta or New York
$80k-$92k/yr HybridFull Time
Pariveda
Pariveda: Provides technology and strategy consulting for business growth.
Pursuing a Bachelors or Masters in MIS, Computer Science, or Computer Engineering (graduation Dec 2026–Aug 2027); legal US work authorization without sponsorship; software development or internship experience; strong communication and problem-solving skills.
AWS, Azure, Google Cloud, Databricks, PySpark, CI/CD, Docker, Terraform, Azure OpenAI, AWS Bedrock, LangChain, Python, Java, SQL, JavaScript, .NET, React, Angular
Job PostingView all
10h
Save
Mark Applied
Hide
Software Engineer (New Grad December 2026)
Los Angeles or Hawthorne or El Segundo
$125k-$150k/yr OnsiteFull Time
Freeform
Freeform: Deploys autonomous AI-powered metal 3D printing factories.
Bachelor's degree in computer science or computer engineering from an ABET-accredited institution plus programming experience with C/C++ through internships, engineering clubs, hackathons, or similar activities.
C, C++, GPU, FPGA, Linux, RTOS
Job PostingView all
1mo
Save
Mark Applied
Hide
Software Engineer Intern
Los Angeles, California, United States
$30/hr HybridInternship
Centerfield
Centerfield: Drives customer acquisition through performance marketing and digital brands.
Required experience with C#/.NET, SQL, HTML/CSS/JavaScript, source control and OOP; pursuing a Computer Science degree; local to Playa Vista and available to work in-office three days/week.
C#, .NET, SQL, HTML, CSS, JavaScript, React, Node.js, Python, Java, AWS, Google Cloud Platform (GCP), Kafka, Amazon SQS, RabbitMQ, Docker, REST APIs
Job PostingView all
4d
Save
Mark Applied
Hide
Spring 2027 Software Engineering Internship/Co-op
Bastrop or Brownsville or Cape Canaveral or Hawthorne or Irvine or McGregor or Palo Alto or Redmond
$30-$40/hr OnsiteInternship
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
0.25+ YOEEnrolled in a bachelor’s or graduate program,3+ months programming experience,proficient in one or more of C,C++,C#,Java,JavaScript,Python,US work-authorization required.
C, C++, C#, Java, JavaScript, Python
Job PostingView all
3w
Save
Mark Applied
Hide
2027 North America Software Engineering Internship
Bellevue or Boulder or Denver or Irvine or New York or Seattle
$46-$62/yr HybridInternship
The Trade Desk
The Trade DeskNASDAQ: TTD: Cloud-based programmatic advertising platform for data-driven media buying.
Enrolled in a Bachelor's or Master's program, expected to graduate 2027–2028; fluent in one or more object-oriented languages; strong data structures and algorithms; available to work 3 days in office (Tue–Thu).
Job PostingView all
2d
Save
Mark Applied
Hide
Software Engineer Intern (Foundation Platform) - 2027 Summer
San Jose or Los Angeles or New York City or London or Dublin or Paris or Berlin or Dubai or Jakarta or Seoul or Tokyo
OnsiteInternship
TikTok
TikTok: Global short-form video hosting and social media platform.
Currently pursuing an undergraduate or master's degree in software development, computer science, computer engineering, or a related technical field; experience with Python, Java, Golang, C#, or C++.
Python, Java, Golang, C#, C++
Job PostingView all
2mo
Save
Mark Applied
Hide
2026 Early Career Embedded Software Engineer
Irvine, California, United States
$100k-$120k/yr OnsiteFull Time
TP-Link
TP-Link: Global manufacturer of networking hardware and smart home devices.
Bachelor's degree in CS/EE/CE (or related), internship/co-op or project experience, proficiency in C/C++, CS fundamentals, familiarity with SDLC, strong problem-solving and teamwork, and continuous US work authorization required.
C, C++
Job PostingView all
1d
Save
Mark Applied
Hide
Software Engineer Intern - Winter 2027
New York City or Seattle or Los Angeles or Mountain View or San Francisco
$70/hr OnsiteInternship
Atoms
Atoms: Building robotics and software to automate physical world industries.
Pursuing a bachelor's or master's in computer science, engineering, or a related field; 3.7 GPA minimum, introductory computer science coursework, and advanced programming experience.
Go, Python, Ruby, Java, Kotlin, C, C++
Job PostingView all
1d
Save
Mark Applied
Hide
Software Engineer Intern - Summer 2027
New York City or Seattle or Los Angeles or Mountain View or San Francisco
$70/hr OnsiteInternship
Atoms
Atoms: Building specialized industrial robots and physical AI systems.
Pursuing a bachelor's or master's in computer science, engineering, or related field; 3.7 GPA minimum; introductory computer science course and advanced programming experience required.
Go, Python, Ruby, Java, Kotlin, C, C++
Job PostingView all
1mo
Save
Mark Applied
Hide
2027 Software Engineer Intern
Costa Mesa or Irvine or Atlanta or Seattle or Boston or Reston
$45-$50/yr OnsiteInternship, Full Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
Pursuing a Bachelor\u0002s in CS or related field, rising senior returning to school, proficiency in C++, Go, Rust, Java, or Python, familiarity with algorithms, data structures, cloud and front-end concepts, and U.S. Person status required.
C++, Go, Rust, Java, Python, Lattice OS
Job PostingView all
3d
Save
Mark Applied
Hide
R&D Software Engineering Internship
Calabasas or Santa Clara
$40-$43/hr OnsiteInternship
Keysight Technologies
Keysight TechnologiesNYSE: KEYS: Provides electronic design, test, and simulation software and hardware.
Bachelor’s or Master’s in EE/CE or related, strong FPGA development experience (RTL, simulation, synthesis, debug), exposure to VHDL/Verilog/SystemVerilog, and strong analytical and communication skills.
VHDL, Verilog, SystemVerilog, PCIe, Ethernet, SerDes
Job PostingView all
4w
Save
Mark Applied
Hide
Software Engineering Internship - Fall 2026
Torrance, California, United States
OnsiteFull Time
Vital Lyfe
Vital Lyfe: Develops portable devices that produce clean drinking water anywhere.
Strong programming fundamentals; experience with Python or TypeScript; familiarity with APIs, web applications, cloud systems; practical problem-solving and ownership mindset.
Python, TypeScript, React, SQL, AWS
Job PostingView all
3mo
Save
Mark Applied
Hide
Sr. Software Engineer (Radar R&D & Production Focused)
Hawthorne, California, United States
$140k-$220k/yr OnsiteAll Commitments Available
CHAOS Industries
CHAOS Industries: Develops advanced radar and sensing systems for modern defense.
10+ YOE10+ years in object-oriented software, Python, Linux, DoD access, Bachelors or higher in CS/CE.
Python, Linux, Git, Docker, Kubernetes, CUDA, SDR, CI/CD, virtualization, VMware
Job PostingView all
3mo
Save
Mark Applied
Hide
Principal Engineer Software - Storage (Chronosphere)
Burbank or Denver or Chicago or Austin or Jacksonville or Hartford or Bridgeport or Seattle or Boston or New York City
$147k-$238k/yr RemoteAll Commitments Available
Palo Alto Networks
Palo Alto NetworksNASDAQ: PANW: Provides enterprise-grade network, cloud, and endpoint security software.
Design and build scalable backend services for high-volume telemetry data; strong backend skills; cloud infra experience; API design; mentorship.
Go, Java, Python, Rust, AWS, GCP, Azure, REST, gRPC, GraphQL
Job PostingView all
1w
Save
Mark Applied
Hide
Software Engineering Intern – Summer 2027
Fridley or Tempe or Eatontown or Santa Rosa or Lafayette or Boulder or Plymouth or Mounds View or Irvine or North Haven or Memphis or Newton or Dexter or Santa Ana or Mansfield or Fort Worth or Minneapolis or Brooklyn Center or Jacksonville or Boston or Brooklyn Park
$27-$45/hr OnsiteFull Time
Medtronic
MedtronicNew York Stock Exchange: MDT: Develops and manufactures medical devices and digital health solutions.
Currently pursuing BS/MS in computer/software engineering or related with anticipated graduation 2027–2029; full-time internship availability June–Aug; U.S. work authorization required; 3.0 GPA preferred; experience with programming/projects preferred.
C, C++, C#/.NET, SQL, JavaScript, Java, Python, Swift, HTML/CSS, Microsoft Visual Studio, Jenkins, GitLab
Job PostingView all
2mo
Save
Mark Applied
Hide
AI Engineer
New York or Los Angeles or Boston or Jersey City or Houston
$115k-$130k/yr RemoteAll Commitments Available
Makai Labs
Makai Labs: Provides AI-powered enterprise automation and human-machine teaming solutions.
Hands-on AI engineer with Python skills; experience building AI apps; internship/coursework/research or projects; ability to prototype and iterate quickly.
Python, API development, Backend services, Workflow automation, FastAPI/Flask, React/TypeScript, Docker, Testing (Python/TypeScript), LLM retrieval/search
Job PostingView all
14h
Save
Mark Applied
Hide
Propulsion Engineering Internship - Spring 2027
El Segundo or Los Angeles or Washington or Huntsville
$33/hr OnsiteFull Time, Internship
Varda Space Industries
Varda Space Industries: Develops in-orbit manufacturing platforms and reentry capsules for pharmaceuticals.
Pursuing an engineering bachelor's or master's degree with relevant propulsion coursework, fluids fundamentals, hands-on fluid-system experience, engineering software familiarity, and exposure to pressurized or combustion systems.
NX, Teamcenter, GD&T, MATLAB, Python
Job PostingView all
2mo
Save
Mark Applied
Hide
AI Automation Quality Engineer I - Hybrid
Irvine, California, United States
$69k-$115k/yr HybridAll Commitments Available
Panasonic Avionics Corporation
Panasonic Avionics CorporationTokyo Stock Exchange: 6752: Provides in-flight entertainment and connectivity systems for airlines.
0+ YOEBachelor’s degree in CS/Engineering/Data Science or related technical field; 0–2 years in software, scripting, automation, data analysis, QA; foundational software lifecycle and QA knowledge; strong communication and learning abilities.
Python, Automation frameworks, Data analysis tools
Job PostingView all

Explore Jobs

Expand Your Job Search