HiringCafe
Join our community

237 developer intern jobs at 160 companies in Mission Viejo, CA

2mo
Save
Mark Applied
Hide
Firmware Engineer Intern
Irvine, California, United States
OnsiteInternship
Fluxergy
Fluxergy: Portable diagnostic platform for rapid point-of-care laboratory testing
0+ YOEEnrollment in a Bachelor’s or Master’s program; 30-40 hours/week; proficiency in C/C++; RTOS exposure; strong problem-solving and communication skills.
C/C++, RTOS, Git, Embedded systems
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
1w
Save
Mark Applied
Hide
Quality Engineer Intern
Santa Ana, California, United States
OnsitePart Time
Brasstech
BrasstechNYSE: MAS: Manufacturer of premium kitchen and bathroom fixtures and accessories.
Mechanical or Industrial Engineering student; no experience necessary; experience with Microsoft Office; ability to develop and update production work instructions and participate in lean activities.
Microsoft Office
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
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
3mo
Save
Mark Applied
Hide
Manufacturing Engineer Intern
Cerritos, California, United States
$25/hr OnsiteInternship
Amphenol CIT
Amphenol CITNYSE: APH: Designs and manufactures high-performance wire, cable, and interconnect solutions.
0+ YOE0-1 years engineering/CI experience; Lean/manufacturing knowledge; EHS awareness; Bachelor's in Engineering; strong communication; MS Office and Minitab skills.
MS Office, Minitab
Job PostingView all
2d
Save
Mark Applied
Hide
Manufacturing Engineer Intern
South Gate, California, United States
OnsiteMultiple Commitments Available
Precision Castparts Corp.
Precision Castparts Corp.NYSE: BRK.B: Manufacturer of complex metal components for aerospace and industrial markets.
Pursuing a BS in engineering or business management; requires analytical, technical, communication, organizational, and problem-solving skills, plus Microsoft Office proficiency and ability to interpret blueprints and specifications.
Microsoft Office, Microsoft Word, Microsoft Excel, Microsoft Access, Microsoft Outlook
Job PostingView all
2w
Save
Mark Applied
Hide
Web Developer Intern
Pasadena, California, United States
OnsiteInternship
Expatiate Communications
Expatiate Communications: Provides special education management and therapeutic services to school districts.
Pursuing or recently completed relevant degree; basic OOP and web fundamentals; familiarity with HTML/CSS/JavaScript; eagerness to learn full-stack, databases, version control, and cloud; Live Scan and TB clearance required.
C#, .NET, HTML, CSS, JavaScript, React, Svelte, Microsoft SQL Server, Azure SQL, MongoDB, Postman, Swagger, JWT, Git, GitHub, GitHub Actions, Microsoft Azure, Figma
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
2mo
Save
Mark Applied
Hide
Project Engineer Intern - Summer 2027
Sacramento or Oakland or Commerce or San Diego or Goodyear or Manassas
$21-$28/hr OnsiteFull Time
Helix Electric
Helix Electric: Provides electrical contracting and design-build services for complex projects.
Enrolled in a bachelor’s degree program; construction or engineering focus; internship or related experience preferred; strong communication, math, and organizational skills.
BIM, Accubid, Excel, AutoCAD, Microsoft Office
Job PostingView all
12h
Save
Mark Applied
Hide
Grant Writing Intern
Los Angeles, California, United States
RemoteInternship
Our National Conversation
Our National Conversation: Nonpartisan news media outlet hosting civil dialogue and policy solutions.
English communication skills, Google Workspace experience, organization, confidentiality, remote self-management, deadline management, meeting attendance, and U.S. authorization to intern.
Google Workspace, Zoom, Slack
Job PostingView all
1w
Save
Mark Applied
Hide
Quality Engineer Intern
Santa Ana, California, United States
OnsitePart Time
Masco
MascoNew York Stock Exchange: MAS: Manufactures and distributes home improvement and building products.
Mechanical or Industrial Engineering student; no prior experience necessary; experience with MS Office; ability to develop and update production work instructions and participate in lean activities.
Microsoft Office
Job PostingView all
1w
Save
Mark Applied
Hide
Sales Engineer Intern
Santa Fe Springs, California, United States
$20/hr OnsitePart Time, Internship
RD Rubber Technology Corporation
RD Rubber Technology Corporation: Manufacturer of custom precision molded rubber components.
Open to engineering majors; strong written/verbal communication, market research, business development, MS Office proficiency, organized, results-driven; available 15–25 hrs/week.
Microsoft Office
Job PostingView all
1mo
Save
Mark Applied
Hide
Intern
Rancho Cucamonga, California, United States
OnsiteInternship
Hillside Community Church
Hillside Community Church: Religious institution providing worship services and community programming.
Internship providing ministry training and leadership development; plan and execute events, foster community connections; 10–20 hours/week from late Aug 2026 to early May 2027.
Job PostingView all
4w
Save
Mark Applied
Hide
AI-First Engineering Intern
Los Angeles, California, United States
$20-$25/hr OnsiteInternship
Xsolla
Xsolla: Provides payment and monetization tools for game developers.
Experience using agentic AI coding tools, full-stack development comfort, proof-of-work portfolio (GitHub or deployed projects), currently a CS/software student or recent graduate, strong initiative and communication.
Claude Code, Cursor, Copilot, GitHub, APIs, SDKs, Loom
Job PostingView all
1mo
Save
Mark Applied
Hide
ME Intern
Irvine, California, United States
$18-$28/hr OnsiteInternship, Part Time
One-Cycle Control
One-Cycle Control: Manufacturer of high-performance power electronics and conversion technology.
US citizen or Green Card required; ability to read work orders, follow instructions, good communication, attention to detail; minimum 16 hours/week; background check and drug test possible.
Job PostingView all
3d
Save
Mark Applied
Hide
Project Engineer Intern
Escondido, California, United States
$23-$25/hr OnsiteInternship
One Stop Systems
One Stop SystemsNASDAQ: OSS: Manufacturer of high-performance ruggedized edge computing systems.
High school diploma required; engineering college students preferred. Self-motivated, organized, able to lift ~50 lbs, perform engineering and design tasks under supervision, and work in office/warehouse environments.
Job PostingView all
2w
Save
Mark Applied
Hide
Hydrogeology Intern
Lakewood, California, United States
$26-$28/hr FieldPart Time
Water Replenishment District of Southern California
Water Replenishment District of Southern California: Manages and protects groundwater resources for Southern Los Angeles County.
Enrolled full-time in a bachelor’s or graduate program in geology/hydrogeology or related field; able to work 10–24 hrs/week; experience with Microsoft Office; fieldwork and data analysis capabilities required.
Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, ArcGIS
Job PostingView all
2mo
Save
Mark Applied
Hide
Research Intern
Carlsbad or New York
OnsiteFull Time, Internship
Gemological Institute of America
Gemological Institute of America: Provides gemstone grading, gemology education, and scientific research services.
Actively enrolled in a bachelor’s or graduate degree program; gemology or related science preferred.
MS Office
Job PostingView all
3w
Save
Mark Applied
Hide
Business Development Intern
New York City or Georgia or California or San Francisco or Turkey or Los Angeles or Dallas or Miami
RemoteFull Time, Internship
Immigrant Invest
Immigrant Invest: A provider of migration and investor services focused on partnership-driven business development.
Final-year student or recent graduate in business-related field; internship or part-time sales/partnerships experience helpful; CRM familiarity; professional English (C1); proactive and analytical.
Salesforce, HubSpot, Pipedrive, CRM
Job PostingView all

Explore Jobs

Expand Your Job Search