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Junior Python Developer Jobs in Simi Valley, CA, US
130+ junior python developer jobs from 66 companies hiring in Simi Valley, CA, US.
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Electrical Engineer, Engineering Rotational Program
Torrance, California, United States
OnsiteFull Time
Bachelor’s or Master’s in Electrical or Computer Engineering; GPA 3.1; prior co-op/internship; able to present to diverse stakeholders; multi-priority management; quick to learn new tools/technologies.
Mentor Graphics, LabVIEW, MATLAB, Python, C/C++, Spice, Systems design tools
1mo
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Summer 2026 Artificial Intelligence / Machine Learning Intern - Graduate Student
Seattle or Los Angeles or Denver
$38/hr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
0+ YOEU.S. citizen or permanent resident or asylum/refugee status; enrolled undergrad with at least one semester/quarter remaining; completed at least one year of post-high school coursework; available for full-time internship (~12 weeks); strong communication; interest in mission; ML/AI exposure plus Python/Torch skills.
Python, Torch, AWS, Git, Docker, Kubernetes, React, JavaScript, HTML, CSS
1mo
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Associate AI/Machine Learning Engineer
Long Beach, California, United States
OnsiteFull Time
0+ YOE0–2 years of experience; foundation in SQL and programming; basic ML knowledge; willingness to learn.
SQL, Python, PHP, MySQL HeatWave, HeatWave ML
3d
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Graduate Mechanical Engineer in Los Angeles, California, United States
Los Angeles or San Francisco
HybridFull Time
Bachelor’s degree in Mechanical Engineering or related field; strong interest in built environment and sustainability; internship or project experience preferred.
Revit MEP, CFD, Dynamo, Python, Grasshopper
4d
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Graduate Mechanical Engineer in Los Angeles, California, United States
Los Angeles or San Francisco
HybridFull Time
0+ YOERecent graduate with degree in mechanical engineering; internship or project experience; strong communication; leadership and teamwork; eligible to work in the US; interest in sustainable built environment.
Revit MEP, Energy modeling, CFD, Dynamo, Python, Grasshopper
1mo
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Postdoctoral Fellow - Radiation Oncology
Duarte, California, United States
OnsiteFull Time
0+ YOEPhD in biomedical or electrical engineering; strong MRI pulse sequence development; coding in C++, MATLAB, or Python; independent yet collaborative researcher.
MRI, C++, MATLAB, Python
3w
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Associate ASIC and/or FPGA Design and Verification Engineer
El Segundo or Huntington Beach or Fairfax
$99k-$133k/yr OnsiteFull Time
2+ YOEBachelor's degree in engineering or related field; ASIC/FPGA design/verification experience; SystemVerilog; hardware integration and test.
SystemVerilog, SystemVerilog Assertions, Palladium, UVM, Verilog, Python, Perl, Make, Linux, Git, SV, EDA Tools
3mo
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Data & Automation - Associate Development Program
Cerritos, California, United States
HybridFull Time
0+ YOEGraduates (May/June 2026) or soon-to-be grads; 40 hrs/week; Python familiarity; Pandas/NumPy or RESTful APIs; problem solving; agile environment.
Python, Pandas, NumPy, RESTful APIs
1w
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Software Engineering Intern
El Segundo, California, United States
$4k-$6k/mo OnsiteAll Commitments Available
Internship requiring strong Python fundamentals, data handling, APIs, and SQL with interest in geospatial or sensor data.
Python, APIs, SQL
1w
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Financial Services AI Automations Intern
Los Angeles, California, United States
$2k-$3k/hr RemotePart Time, Internship
Python experience, AI workflows, finance domain knowledge, and pursuing a related degree; internship and part-time availability.
Python, LangChain, AutoGen, CrewAI, OpenAI API
6d
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Software Engineering Intern, Avionics Design Team
Redondo Beach, California, United States
$32/yr OnsiteFull Time, Internship
Currently enrolled in a bachelor’s or master’s program in CS or EE; experience with Python/JavaScript; able to explain complex system interactions.
Python, JavaScript, CAD, NX, SQL, NoSQL, PostgreSQL, AWS, Azure
1mo
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Intern, Backend Development
Burbank, California, United States
$30-$35/hr OnsiteFull Time
Graduate student in Computer Science or Software Engineering; strong .NET/C# skills; solid relational database knowledge; understanding of system design; able to work independently; experience with GenAI in software development.
.NET, C#, PostgreSQL, Python, Robot Framework, Docker, GitHub Copilot, Claude, ChatGPT
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Game Research & Development Intern, Engine Research
Los Angeles, California, United States
$28-$60/hr OnsiteFull Time
Strong coding skills in C++, Python, TensorFlow/Torch; knowledge of calculus, linear algebra; good communication and responsibility.
C++, Python, TensorFlow, PyTorch
3w
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Summer Research Assistant
Pasadena, California, United States
OnsiteInternship
Basic Python skills and some lab experience; experience with liquid cryogenics preferred.
Python
2mo
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Flight Software Intern
Long Beach, California, United States
$28/hr OnsiteInternship
0+ YOEPursuing bachelor’s in CS/EE/CE; embedded systems exposure; C/C++, Python; Linux/RT concepts; Git; eager to work in a fast-paced space environment.
C/C++, Python, Linux, Embedded Linux, Git, SPI, I2C, CAN, UART, Ethernet, IDEs, Debugging tools
3w
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Summer Research Assistant
Pasadena, California, United States
HybridTemporary
Assists with functionality testing and refurbishment of cryogenic instruments; basic Python; some lab experience; liquid cryogenics preferred.
Python, Cryogenic instruments, Cryostats
2w
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Modeling & Simulation Software Engineering Intern - Fall 2026
Los Angeles, California, United States
$25-$33/hr OnsiteInternship
0+ YOEPursuing a degree in Computer Science, Aerospace Engineering, Electrical Engineering, Applied Mathematics, or related field; proficient in Julia or Python/MATLAB/C++; knowledge of 6DOF dynamics; experience with data validation and modeling; GPA 3.0+; strong communication and teamwork.
Julia, Python, MATLAB, C++
3h
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Creative AI Coordinator
Los Angeles, California, United States
$24/hr HybridFull Time
0+ YOEUp to three years of combined professional experience; strong interest in creative production, design systems, content workflows, or creative technology; familiarity with AI tools for text, image, or video generation; comfortable with Python and/or JavaScript; knowledge of social platform or creative tooling APIs is a plus.
Python, JavaScript, APIs, Figma, Adobe, Canva, Video generation tools
1w
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Associate AI Security Resident
Washington or San Francisco or Santa Monica or Pittsburgh or Boston
$90k-$177k/yr HybridFull Time
1+ YOETechnical security/engineering background; leadership experience; programming in Python/Java/C/C++; threat modeling; strong communication; policy analysis; collaboration; MS Office.
Python, Java, C/C++, Threat modeling, MS Office
3w
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Project Assistant
Marina del Rey, California, United States
$26-$27/hr OnsiteFull Time
1+ YOEBachelor’s or master’s degree in engineering, computer science, math, neuroscience, data science, or related field; experience with Matlab, Python, R, C++, shell scripting; knowledge of FSL/SPM; familiarity with neuroimaging data.
Matlab, Python, R, C++, shell scripting, FSL, SPM
2mo
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Postdoc: Radar Remote Sensing of Landslides and Vertical Land Motion (OPERA Project)-1
Pasadena, California, United States
$84k/yr OnsiteFull Time
Ph.D. in Earth Science or Remote Sensing; experience with InSAR processing; strong Python skills; GIS experience; capable of publishing in peer-reviewed journals.
ISCE, MintPy, Dolphin, Python, QGIS, GDAL, Git
3w
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Project Assistant
Marina Del Rey, California, United States
$26-$27/hr OnsiteFull Time
1+ YOEBachelor's or master's in engineering, computer science, math, statistics, neuroscience, data science, or related field; image analysis experience; programming in Matlab, Python, R, C++, shell; familiarity with FSL/FreeSurfer; knowledge of statistics or genetics is a plus.
FSL, FreeSurfer, Matlab, Python, R, C++, Shell scripting, SPM
2mo
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Intern, Advanced Computer Graphics Research
Culver City, California, United States
$50/hr OnsiteInternship, Full Time
Ph.D. candidate or post-doctoral researcher with strong background in human-centric Generative AI and photo-realistic 3D graphics; proficient in Python/Matlab/C/C++; familiar with Unreal Engine, Unity, Maya, Blender, or similar tools; excellent analytical skills; authorized to work in the USA.
Python, Matlab, C/C++, Unreal Engine, Unity, Maya, Blender, Marmoset
6d
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Software Engineering Intern, Backend & API
Glendale, California, United States
$25-$35/hr HybridInternship
C# coursework or project experience; REST API design; SQL and data skills; willingness to learn .NET specifics.
.NET, React, Capacitor, Python, Cursor, Copilot, Claude
2w
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Software Engineering Internships – Academic Year
Universal City, California, United States
$30-$40/hr OnsiteInternship
0+ YOEActively enrolled in a degree program; sophomores or above; US work authorization; available 16-24 hours/week Sep 2026–Apr 2027; willing to work in Universal City, CA.
Java, TypeScript, Python, Selenium, Pytest, Cucumber, Git, CI/CD, REST, AWS, Playwright
1mo
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RF Systems Intern - Masters
Malibu, California, United States
$43-$48/hr OnsiteInternship
Internship requiring graduate-level qualifications in RF/electronics; hands-on modeling, FPGA/DSP experience; strong circuit theory and electromagnetics; travel-ready; U.S. citizenship for clearance
HFSS, ADS, CST, VHDL, Verilog, Python, C/C++, MATLAB, Simulink
1w
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Corporate Development, Strategy & Deal Integration Intern
Simi Valley, California, United States
OnsiteInternship, Full Time
0+ YOEPursuing a Bachelor's in business/finance/economics/international affairs or STEM; knowledge of corporate finance; experience with Python/Tableau/PowerBI; proficient in MS Office.
Python, Tableau, PowerBI, Salesforce, MS Office
1w
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Nutrition Science Intern
West Hills, California, United States
$30-$35/hr HybridFull Time, Internship
Pursuing an advanced degree in life sciences; strong nutrition knowledge; data analysis exposure; excellent communication.
R, Python, SAS, Excel
1w
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NERA Consultant - Antitrust/Labor Economist (Job Market/New PhD)
Los Angeles or New York or Chicago or Washington
$225k-$235k/yr HybridFull Time
PhD in Economics with training in Labor Economics or IO, econometrics; strong written/oral communication; capable of high-level economic research.
Stata, R, Python, Excel
1mo
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Water Quality Science Internship
Los Angeles, California, United States
$25/hr HybridInternship, Full Time
Internship supporting water quality monitoring, data entry, analysis, and GIS; fieldwork, project work, and reporting.
Microsoft Office, Google Workspace, ArcGIS, R, Python
1mo
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Data Reporting and Analytics Master's Intern
Pasadena, California, United States
$31-$40/hr HybridMultiple Commitments Available
0+ YOEPursuing/holding graduate degree; data analytics internship; strong Office and programming skills; report development and analytics; project management; strong communication.
MS Word, Excel, PowerPoint, SQL, Python
HiringCafe market data
Junior Python Developer Jobs market signals in Simi Valley, CA, US
These signals come from live HiringCafe job inventory, not a static article. Use them to compare the market, then open listings above to apply directly.
Open jobs
130+
Hiring companies
66
Fresh sample
64% new in 30d
Salary visibility
67% show pay
Companies appearing in this market
CaltechUniversity of Southern CaliforniaCity of HopeArupNBCUniversalAeroVironmentBlue OriginBoeing
Work location mix in visible results
Onsite: 26Hybrid: 12Remote: 1