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Junior Python Developer Jobs in Rialto, CA, US
66 junior python developer jobs from 40 companies hiring in Rialto, CA, US.
3w
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Junior Researcher - Plasma Diagnostics
Foothill Ranch, California, United States
$30-$35/hr OnsiteFull Time
1+ YOEEntry-level plasma diagnostics role requiring hands-on lab experience (>1 year) and ability to design/perform experiments; strong Python and visualization skills; BS in Physics or Engineering.
Python, Multimeters, Oscilloscopes, Function Generators, DAQs, IDL, MATLAB, SQL, C++
2w
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Software Engineer–Developer (Associate/Experienced)
Seal Beach, California, United States
$106k-$183k/yr OnsiteFull Time
1+ YOE1+ years C/C++ or Java/Python development; 1+ years software development on Windows or Linux; 1+ years with relational databases; 1+ years in Agile environments; Active TS/SCI clearance.
C/C++, Java, Python, Windows, Linux, Relational Databases, SQL-Server, Oracle, Teradata, Jira, Confluence, Bitbucket
1mo
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Software Development Engineer
Edwards, California, United States
$22-$25/hr OnsiteTemporary
0+ YOEBachelor's degree in CS/Software Engineering/Aerospace; 0-2 years software development; languages include C, C++, Python, MATLAB/Simulink; US citizenship; ability to obtain security clearance.
C, C++, Python, MATLAB/Simulink
1mo
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Product Engineer II – Reality Mapping
Redlands, California, United States
$77k-$129k/yr OnsiteFull Time
2+ YOE2+ years in GIS/remote sensing or photogrammetry; knowledge of photogrammetry; UI/DevOps test automation; Python/JavaScript/C# development; BA/BSc in GIS, geography, engineering, CS, math, or related field.
JMeter, Selenium, Robot Framework, Python, JavaScript, C#, Jenkins, GitHub Actions
1mo
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Firmware Engineer
Westlake Village or Santa Clara
$87k-$129k/yr OnsiteFull Time
2+ YOEBachelor in Computer Engineering or CS; 0-2 yrs; ARM/RISC-V; C and Python; RTOS basics; embedded drivers; SPI/I2C/UART; schematics; Git/IDEs; Doxygen; English; multitasking.
ARM architecture, RISC-V, C, Python, Git, IDEs, Make, Doxygen, RTOS, SPI, I2C, MDIO, UART, Schematic reading
1w
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Software Engineer I
Irvine, California, United States
$89k-$133k/yr HybridFull Time
Software engineer with React, Python, AWS; design and build cloud-native, scalable systems in Agile teams.
React, Python, GraphQL, Node.js, JavaScript, TypeScript, AWS, Docker, Terraform, SQL, PostgreSQL, S3, GitHub Actions, CI/CD, API
1w
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Software Engineer - Full Stack
Irvine, California, United States
$120k-$140k/yr HybridFull Time
0+ YOE0-3 years of professional software engineering; strong Python or similar languages; REST APIs; SQL; Git; CI/CD; testing frameworks.
Python, REST APIs, SQL, Git, CI/CD, pytest, Jest, Selenium, Playwright, React, TypeScript, HTML, CSS, Docker, Kubernetes, AWS, GCP, Azure, FastAPI, asyncio
1d
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Salesforce Developer Engineer Intern
Costa Mesa, California, United States
OnsiteInternship
0+ YOEInternship requiring CS focus, programming skills, and fast learner; 40 hrs/wk; onsite in Costa Mesa.
Java, JavaScript, Python, Salesforce
1w
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Jr. Front-End Developer (2800)
Orange, California, United States
$67k-$75k/yr HybridFull Time
2+ YOE1-2 years front-end experience; HTML, CSS, Next.js; JavaScript frameworks (React/Vue/jQuery/ES6); CMS (Contentful, WordPress); Git; cloud exposure (Azure/AWS/GCP) preferred; basic back-end knowledge (PHP/Python/Node.js); strong communication and teamwork.
HTML, CSS, Sass, Less, Next.js, JavaScript, React, Vue, jQuery, ES6, Git, GitHub, Contentful, WordPress, Webpack, NPM, Azure, PHP, Python, Node.js, SQL, APIs
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
2mo
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Forward Deployed Software Engineer Internship
Irvine, California, United States
$250-$625/hr OnsiteMultiple Commitments Available
Part-time internship for a student; strong programming skills across Python/Java/C++/TypeScript; collaboration with technical and non-technical stakeholders; able to work independently and 10-25 hrs per week.
Python, Java, C++, TypeScript/JavaScript, Cloud, Front-end frameworks
2mo
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Software Engineer II
Irvine, California, United States
$32-$54/hr HybridFull Time
3+ YOE0–3 years in software engineering; strong C/C++, Linux, web tech; Agile/Scrum; REST APIs; CI/CD; sockets; travel up to 20%
C++, Linux, PHP, Python, JavaScript, C/C++, Git, CI/CD, REST APIs, HTML, CSS, React, SaaS
4d
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Software Engineer Intern - AI
Santa Ana, California, United States
$19/hr OnsiteInternship
Enrolled in associate or bachelor's program; basic programming skills; 20 hours/week; GPA 3.0+; Winter 2026 graduation or later; strong teamwork and communication
Python, Java, C#
1mo
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Senior Test Engineer
Brea or San Francisco
$84k-$162k/yr HybridFull Time, Contract
5+ YOE5+ years testing experience; strong Java or Python; automation testing; API testing; web and mobile testing knowledge; mentoring/junior engineers; strong analytical and communication skills.
Selenium, TestNG, Postman
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
5d
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Forward Deployed Engineer I, GenAI, Google Cloud
San Francisco or Atlanta or Austin or Boulder or Cambridge or Chicago or Addison or Detroit or Irvine or Kirkland or Miami or New York City or Portland or Los Angeles or Reston or Seattle or Sunnyvale or Washington D.C.
$102k-$145k/yr OnsiteFull Time
1+ YOEBachelor's degree; experience in AI, Python/Typescript; cloud experience; applied AI knowledge.
Python, Typescript, Cloud Platform, LangGraph, CrewAI, Google ADK, RAG, MCP
1w
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WiFi Connectivity Validation Engineer
Irvine or San Diego or Sunnyvale
OnsiteFull Time
Bachelor's degree; knowledge of IEEE 802.11; programming in Python, Shell/Perl/JS/C#; experience validating WiFi systems; preferred advanced degree.
Python, Shell, Perl, JavaScript, CSharp, WiFi test equipment, Wireshark, Iperf, CMW500
1w
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Design Verification Engineer - Early Career
Santa Clara or Irvine
$87k-$130k/yr OnsiteFull Time
1+ YOEBachelor’s or Master’s in Electrical/Computer Engineering with 1–3 years experience; Verilog/VHDL; Linux and Python; PCB/architecture knowledge; experience with UVM and ASIC verification.
Verilog, VHDL, UVM, Synopsys, Cadence, Mentor Graphics, Linux, Python, PCIe, Memory Architecture
2w
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Design for Reliability Engineer
Irvine, California, United States
$107k-$134k/yr OnsiteFull Time
1+ YOEBachelor in engineering; 1+ years in reliability engineering; strong technical background; FMEAs; Python; ReliaSoft/JMP; CAD experience; physics of failure; materials and design knowledge.
CATIA, Python, JMP, ReliaSoft, SEM, CT, X-Ray, EDS
3w
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Engineer I - EE Systems Integration & Validation
Irvine, California, United States
$75k-$85k/yr OnsiteFull Time
0+ YOEBachelor’s degree in Electrical/Computer/Automotive Systems Engineering; 0-3+ years electrical experience; can read schematics; programming in Python/C++/MATLAB/Simulink; knowledge of hardware, software, and systems engineering; English communication skills.
Python, C++, MATLAB, Simulink, Raspberry Pi, Arduino, CAN, LIN, FlexRay, HIL, UDS
2w
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Site Reliability Engineer Intern
Irvine or Los Angeles
$27-$52/hr OnsiteFull Time
Pursuing CS/engineering degree; graduation 2026-2027; proficient in Go/Python/Java/C++; strong problem-solving; self-motivated; good communication; cloud-native and Kubernetes a plus.
Go, Python, Java, C++, Linux, Kubernetes
1w
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Structural Engineer, Advanced Analysis
Newport Beach, California, United States
$80k-$108k/yr OnsiteFull Time
2+ YOE0-2 years in structural engineering; advanced degree in structural/civil; FE/PE/SE path; proficiency in FEA software; strong communication; willingness to travel; programming skills.
ANSYS, ABAQUS, LS-DYNA, GT-STRUDL, SAP2000, MATLAB, Python, Mathcad
2mo
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Power System Engineer
Irvine, California, United States
HybridFull Time
0+ YOEPower system engineering role requiring knowledge of power flow, short-circuit, protection, dynamics; strong math, documentation, and client communication skills.
ETAP, Power System Analysis, Python, Excel
2mo
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Entry-Level Structural Engineer | Designer
Sacramento or Los Angeles or San Diego or Detroit or Grand Rapids or Orange or Oakland
$84k-$112k/yr HybridFull Time
0+ YOEEntry-level structural engineer with strong academics; MS preferred or BS with 1-2 years experience; GPA 3.40+; US work authorization; strong communication.
AutoCAD, Tekla Structures, RISA, RAM Structural System, Revit, MS Excel, MathCAD, SAP2000, ETABS, Python
2mo
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Design Engineer Intern (Summer 2026)
Huntington Beach, California, United States
$25/hr OnsiteInternship
0+ YOECurrently enrolled in Mechanical, Aerospace, or Electrical Engineering; expected graduation 2025-2027; GPA 3.0+; legal ability to work in the United States.
SolidWorks, CATIA, Python, VBA, Microsoft Office
3mo
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Software Engineering Intern
Rancho Cucamonga, California, United States
$20-$22/hr OnsiteInternship
2+ YOEPursuing a technical BS with 2+ years completed; strong coding skills; git proficiency; knowledge of data structures and OS principles; experience in C/C++/Rust or Python/MATLAB; able to develop executable Python packages and work in a team.
C++, Rust, C, Python, Matlab, Git, Linux
3w
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Software Intern
Irvine, California, United States
$25-$40/hr HybridFull Time, Internship
Undergrad junior entering senior year; pursuing BS in CS/Statistics/Mathematics; strong written/spoken English; proficient with Google Workspace; team player who can also work independently; experience with Python, frontend (JavaScript/React), REST APIs; familiarity with AI tools.
Python, JavaScript, React, REST APIs, Google Workspace, AI tools
1w
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Associate Research and Development (R&D) Test Engineer
Los Angeles or Irvine
$72k-$85k/yr OnsiteFull Time
3+ YOE3 years electronics work (or 1 year with Associate; bachelor or higher preferred); experience with embedded testing; RF instruments; background check and drug test clearance required.
C/C++, Python, MATLAB, RF instruments, Signal generators, Spectrum analyzers, Channel emulators
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
1mo
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Data Scientist for Analytics (Engineer/Scientist Support)
Norco, California, United States
$70k-$143k/yr OnsiteFull Time
Bachelor’s degree; U.S. citizen; DoD SECRET clearance; on-site in Norco, CA; willingness to travel occasionally; proficient in MATLAB or Python; strong analytical and communication skills.
MATLAB, Python
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
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
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
1w
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Research Technician
Claremont, California, United States
$20-$22/hr OnsiteFull Time
Bachelor’s degree in physics or related field; strong communication; Python/LaTeX; advise undergraduates; Workday experience a plus.
Python, LaTeX, Microsoft Office, Scientific computing software
2mo
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Robotics Research Internship-Locomotion & Planning (Summer 2026)
Irvine, California, United States
$45-$60/hr OnsiteInternship
PhD student with RL, locomotion, or planning experience; strong Python/C++ skills; robotics/ML tooling familiarity.
Python, C++, Isaac Gym, MuJoCo, ROS, ROS2, PyBullet
3w
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Post-Baccalaureate Research Assistant, Rosenberg HuMan Lab
Claremont, California, United States
$20/hr OnsitePart Time
BA in neuroscience or psychology; proficiency with Python or R; part-time, 5-15 hours/week; temporary, non-benefits-eligible; California resident.
Python, R, Excel
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
1w
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Student Research Assistant - Industrial and Manufacturing Engineering #705037701
Pomona, California, United States
$18-$20/hr OnsitePart Time
Pursuing an undergraduate or graduate degree in science or engineering; US citizen or green card holder; Python, ML, optimization, CFD (ANSYS); literature review; strong English communication; reliable; team-oriented; proficient in MS Office and Canvas.
Python, Machine Learning, ANSYS CFD, Microsoft Word, Excel, PowerPoint, Canvas
3w
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Student Assistant - CA DMV Customer Services Division- Information Technology - Hybrid
Sacramento or Fresno or Riverside
$17-$21/hr HybridPart Time, Temporary
College student; basic web development and data analysis knowledge; HTML/CSS/JavaScript; Python; NLP interest; bilingual in Spanish and English; willing to work in a hybrid schedule.
HTML, CSS, JavaScript, Python, Jupyter, LangChain, Bedrock, Pinecone, FAISS
2mo
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Software Engineering Intern - REMOTE
Santa Ana, California, United States
$40-$45/hr RemoteInternship
Pursuing a bachelor’s or master’s degree in Computer Science or Computer Information Systems; prior hackathons or internships preferred; available for 8–10 weeks starting early June 2026.
C#, TypeScript, Python, React, NestJS, SQL, NoSQL, Elasticsearch, Kubernetes, AWS, GitHub, Slack, Jira, Confluence, LaunchDarkly
HiringCafe market data
Junior Python Developer Jobs market signals in Rialto, 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
66
Hiring companies
40
Fresh sample
59% new in 30d
Salary visibility
76% show pay
Companies appearing in this market
CaltechCity of HopeEsriCal Poly Pomona FoundationCanon U.S.A.Degenkolb EngineersAppleAuto Club Enterprises
Work location mix in visible results
Onsite: 43Hybrid: 15Remote: 1