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177 developer intern jobs at 127 companies in Simi Valley, CA

1mo
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Engineer intern
Simi Valley, California, United States
OnsiteMultiple Commitments Available
M Wave Design
M Wave Design: Designs and manufactures passive RF and microwave components.
Currently enrolled in an engineering or science program (BSME/BSEE in process or equivalent), US person required, ability to work with technical drawings, basic CAD (SolidWorks/AutoCAD) exposure, strong communication and teamwork skills.
SolidWorks, AutoCAD
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1mo
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Manufacturing Engineer Intern
South Gate, California, United States
OnsiteFull Time
Precision Castparts Corp.
Precision Castparts Corp.NYSE: BRK.B: Manufacturer of complex metal components for aerospace and industrial markets.
0+ YOEInternship requiring full-time 40h/wk or part-time 20h/wk; strong math, analytical, problem-solving, communication; MS Office; ability to read technical documents; team collaboration.
Microsoft Office
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2mo
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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
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4d
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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
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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
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2mo
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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
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4d
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Fall 2026 Intern, Properties (LA)
West Hollywood, California, United States
$20/hr HybridInternship, Part Time
Excel Sports Management
Excel Sports Management: Professional sports agency representing athletes and corporate brands.
Fall semester paid internship, 24-29.9 hours/week, hybrid with ~3 days in-office; must have senior standing in college, be enrolled in graduate school, or hold a bachelor’s/postgraduate degree; interns provide own transportation and housing.
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1mo
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Intern
Santa Barbara, California, United States
OnsiteInternship, Volunteer
Fellowship of Christian Athletes
Fellowship of Christian Athletes: Provides Christian ministry and mentorship to athletes and coaches.
Collegiate volunteer internship (summer or semester) focused on ministry development; requires alignment with FCA Christian statement, participation in daily prayer/Bible study, church involvement, and leading spiritual activities. Unpaid; may receive a nominal stipend.
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2w
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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
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5d
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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
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2w
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Manufacturing Engineer Intern
Santa Fe Springs, California, United States
$20/hr OnsitePart Time
RD Rubber Technology Corporation
RD Rubber Technology Corporation: Manufacturer of custom precision molded rubber components.
Internship requiring familiarity with engineering calculations, CAD modeling, prototyping, manufacturing processes, and the ability to prepare reports and support continuous improvement projects; hands-on manufacturing experience preferred.
CAD
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1w
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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
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4d
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Spring 2027 Construction Project Engineer Intern ($19-$24)
Compton or Cincinnati
$19-$24/hr OnsiteInternship
The Kroger Co.
The Kroger Co.NYSE: KR: Operates supermarkets, pharmacies, and jewelry stores across America.
Current college student pursuing Construction Management or Engineering (preferred GPA 3.0); motivated, strong communication, analytical skills; customer-service oriented; prior construction experience preferred.
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3w
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Software Engineer, iOS, Level 5
Santa Monica or Los Angeles
$209k-$313k/yr OnsiteFull Time
Snap
SnapNYSE: SNAP: Provides visual messaging software and augmented reality wearable devices.
6+ YOE6+ years software development experience, iOS application development, strong CS fundamentals, Objective-C/iOS internals, multithreading and performance optimization, Bachelor’s in CS or equivalent experience.
Objective-C, Objective-C Runtime, Swift, C, C++, OpenGL, Metal
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4w
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Design Intern
Los Angeles, California, United States
$20/hr OnsiteInternship
Guess
GuessNYSE: GES: Designs and retails contemporary fashion apparel and accessories worldwide.
0+ YOEBachelor's degree required; 0-2 years experience. Assist with office tasks, create functional CADs, work cross-functionally with product development, tech design, and merchandising, and meet design deadlines.
CADS
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3mo
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2026 - 2027 Intern class
Los Angeles, California, United States
$80k/yr OnsiteFull Time
VCA Animal Hospitals
VCA Animal Hospitals: Operates animal hospitals providing veterinary medicine and pet services.
Rotating internship program for veterinary graduates; competitive compensation and benefits; on-site training and professional development.
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3mo
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Software Engineering Intern
El Segundo, California, United States
$4k-$6k/mo OnsiteAll Commitments Available
Rainmaker
Rainmaker: Provides cloud seeding services using drones and radar.
Internship requiring strong Python fundamentals, data handling, APIs, and SQL with interest in geospatial or sensor data.
Python, APIs, SQL
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2d
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Quality Intern - Torrance
Torrance, California, United States
$18/hr OnsiteFull Time
PolyPeptide
PolyPeptideSIX Swiss Exchange: PPGN: Global CDMO specializing in peptide and oligonucleotide API manufacturing.
Currently pursuing or recently completed bachelor's in chemistry/biology/biochemistry, lab experience, attention to detail, ability to work in GMP lab with PPE, data review and documentation skills.
GC, HPLC, UPLC, Karl Fischer, UV/Vis
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2d
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Quality Intern - Torrance
Torrance, California, United States
$18/hr OnsiteFull Time
PolyPeptide Group
PolyPeptide GroupSIX Swiss Exchange: PPGN: Contract development and manufacturing for peptide-based pharmaceuticals.
Currently pursuing or recently completed a bachelor's in chemistry/biology/biochemistry, lab experience, attention to detail, ability to work in GMP lab and office settings, and strong communication and analytical skills.
GC, HPLC, UPLC, Karl Fischer, UV/Vis
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1w
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Research Intern (paid)
Beverly Hills, California, United States
$25/hr OnsitePart Time
Cedars-Sinai
Cedars-Sinai: Provides academic medical care, specialized treatment, and biomedical research.
0+ YOENo prior experience required; ideal for a medical student or equivalent with interest in cardiovascular genetics, prospective clinical research, or stem cell biology and ability to commit one year part-time.
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