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Junior Software Engineer Python Jobs in Ontario, CA, US
64 junior software engineer python jobs from 43 companies hiring in Ontario, CA, US.
2mo
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Quality Assurance Engineer (Mobile Applications)
Irvine, California, United States
$100k-$140k/yr OnsiteFull Time
0+ YOE0-3 years mobile app testing; manual and automated testing; testing tools; focus on UI/UX and user perspective; write and execute test cases.
Python, Mobile testing 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
3w
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Systems Development Engineer I (Advanced Robotics & AI Systems)
Diamond Bar, California, United States
$82k-$119k/yr OnsiteFull Time
0+ YOE0-2 years in systems development, data science or related fields; 3-5 years preferred in similar roles; bachelor’s in CS/automation or related field; master’s preferred.
Python, SQL, R, NumPy, Pandas, Matlab, ROS, ROS2, Gazebo, Machine Learning, Edge Computing, Edge AI
1mo
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Systems Engineering and Integration Intern
Long Beach, California, United States
OnsiteInternship
Currently enrolled in or recently completed a bachelor’s or advanced degree program in Aerospace Engineering, Electrical/Mechanical Engineering, or Computer Science; coursework in systems engineering; hands-on hardware/software experience; able to work independently; curious and detail-oriented.
Python, C/C++
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
HiringCafe market data
Junior Software Engineer Python Jobs market signals in Ontario, 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
64
Hiring companies
43
Fresh sample
20% new in 30d
Salary visibility
80% show pay
Companies appearing in this market
Blue OriginCast & CrewNiagara BottlingOdys AviationTP-Link
Work location mix in visible results
Onsite: 5