Python Test Software Developer Jobs in Fontana, CA, US

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Software Test Engineer

Los Angeles, California, United States

OnsiteFull Time

Motorola SolutionsNYSE: MSI: Sells mission-critical communication and video surveillance technology.

Bachelor's in CS/EE; strong Python/C/C++; testing across Windows/Linux/MacOS/Android; networking basics; US citizenship; background check required.

Python, C/C++, Wireshark, TCPDump, Putty, Minicom

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3mo

Software Test Engineer

Los Angeles, California, United States

$36-$43/hr OnsiteFull Time

Silvus TechnologiesNYSE: MSI: Develops tactical mesh radios for mission-critical wireless communications.

Bachelor's degree in CS/EE, strong Python/C/C++, testing and networking basics, US citizen.

Wireshark, TCPDump, Putty/Minicom, Web browser developer tools

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1mo

Software Engineer, Test Infrastructure

Irvine, California, United States

$135k-$170k/yr HybridFull Time

Field AI: Develops autonomous software brains for robots in unstructured environments.

3+ YOE3+ years in software engineering or test infrastructure; Python; testing frameworks; Linux; debugging; CI/CD; collaboration.

Python, Linux, Docker, CI/CD

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Software Engineer in Test (SET)

Orange or New Braunfels

$95k-$110k/yr HybridFull Time

LCPtracker: Provides cloud-based labor compliance and certified payroll software for construction.

3+ YOEBachelor’s degree in computer science, engineering, or related field; 3+ years in software testing with test automation; programming in Java, C#, Python, or JavaScript; experience with Playwright, Selenium, or Cypress; strong QA lifecycle and CI/CD knowledge.

Playwright, Selenium, Cypress, Java, C#, Python, JavaScript, .Net, REST, GraphQL, CI/CD

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Software Development Engineer in Test (SDET), Video Apps

Los Angeles or San Francisco or San Diego or Seattle

OnsiteFull Time

AppleNASDAQ: AAPL: Designs and sells consumer electronics, software, and online services.

5+ YOEAutomation with Python/Swift; test mobile/desktop apps; knowledge of video codecs; BS CS or 5+ years QE experience.

Python, Swift, macOS, Video codecs, MXF, QA tooling

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Enterprise Software Engineer -DevSecOps Lead

Glendale, California, United States

$129k-$226k/yr HybridFull Time

Wolters KluwerEuronext Amsterdam: WKL: Provides professional information and software solutions for specialized industries.

Lead enterprise software development; strong in Java, Python, C#; DevSecOps, code reviews, testing, mentoring.

Java, Python, C#, Git, Performance testing

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Software Engineer - Full Stack

Irvine, California, United States

$120k-$140k/yr HybridFull Time

Emergence AI: Develops autonomous AI agents for enterprise workflow automation.

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

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1mo

Principal Software Development Engineer in Test

New York or Glendale

$172k-$241k/yr HybridFull Time

The Walt Disney CompanyNYSE: DIS: Produces media content and operates global theme parks.

10+ YOE10+ years in quality engineering, automation or software development; leadership in large, complex systems; expertise in test automation; strong communication and mentoring.

Python

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2mo

Sr Embedded Software Test Engineer I

Orange County, California, United States

$115k-$149k/yr HybridFull Time

iRhythm TechnologiesNASDAQ: IRTC: Providing wearable heart monitors and AI-powered cardiac diagnostic services.

5+ YOE5+ years software QA; 3-4 years testing desktop/embedded systems; QA in regulated environments; experience with electronic test equipment; strong QA processes; problem solving; able to work independently or in teams.

Linux, Python, C/C++, C#, .NET, MySQL, Test-Driven Development, JUnit

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2mo

Ground Software Engineer (Senior)

Los Angeles, California, United States

$185k-$215k/yr OnsiteFull Time

Apex: Designs and mass-manufactures configurable satellite bus platforms.

6+ YOE6+ years ground software experience; US person; BS in CS/EE or equivalent; Python, C++, Rust; Linux; Docker/Kubernetes; microservices; networking knowledge; software integration and testing.

Python, C++, Rust, Docker, Kubernetes, gRPC, Linux

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Flight Software Test Verification & Validation (V&V) Engineer

Atlanta or Los Angeles

$177k-$205k/yr OnsiteFull Time

Hermeus: Develops high-speed and hypersonic aircraft for defense and transportation.

3+ YOE3+ years software testing; Python; C++; SITL/HITL; test automation; documentation

Python, C++, Julia, Gitlab CI/CD, SITL, HITL

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1mo

Sr Software Systems Engineer

Long Beach, California, United States

$154k-$211k/yr OnsiteFull Time

Relativity Space: Building 3D-printed rockets for commercial orbital launch services.

2+ YOEBS/MS/PhD in CS/CE/EE; 2+ years in software systems design; familiar with version control, configuration management, debugging, testing; Python, GitLab/Git, CI/CD; 25-50% travel; strong problem-solving and communication.

Python, Git, GitLab, CI/CD, SQL

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1mo

Software Engineer, Backend

United States or Los Angeles

$86k-$103k/yr RemoteFull Time

Mission CloudNASDAQ: CDW: Provides managed services and consulting for AWS cloud environments.

3+ YOEDesigning and developing web applications using Python; REST and GraphQL API development; databases like PostgreSQL, Redis, Elasticsearch; testing; CI/CD in Kubernetes/EKS; AWS deployments; strong collaboration; AWS Cloud Practitioner or PCAP within 1 year.

Python, REST, GraphQL, PostgreSQL, Redis, Elasticsearch, GitLab, Kubernetes, AWS, Flask, Docker, New Relic, Okta, ServiceNow, Salesforce

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Software QA Engineer

Seal Beach, California, United States

$97k-$120k/yr OnsiteFull Time

Diversified Technical SystemsNYSE: VPG: Manufacturer of miniature data acquisition systems and high-shock sensors.

2+ YOEBachelor of Science in Computer Science or related field; 2-5 years of software QA experience in embedded systems; familiarity with C/C++, scripting, and test automation; ability to work cross-functionally.

C, C++, C#, .NET, Python, Wireshark, UDP, TCP/IP, Microsoft Project, Microsoft Office, Embedded systems testing

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2mo

Associate Software Engineer–Vehicle Management Systems

Seal Beach, California, United States

$106k-$144k/yr OnsiteFull Time

BoeingNYSE: BA: Designs and manufactures aircraft, satellites, and defense systems.

2+ YOE2+ years in C/C++, Python and/or shell scripts; UNIX/Linux; RTOS; flight software testing with simulators/HIL; DevOps tools; ability to obtain Top Secret/SCI.

C, C++, Python, shell scripts, UNIX, Linux, RTOS, GitLab, Git Bash, Gradle, Maven, Jenkins, Artifactory

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1mo

Senior Test Engineer

Los Angeles or El Segundo

$103k-$129k/yr OnsiteFull Time

EVgoNasdaq: EVGO: Operates an electric vehicle fast charging network.

5+ YOE5+ years of test engineering experience with hardware and software, including automation and lab instrumentation.

Oscilloscopes, Power supplies, Electronic loads, DAQ systems, SCPI, Python, SQL, Function generators

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Senior Flight Software Engineer

Irvine, California, United States

$140k-$190k/yr OnsiteFull Time

Turion Space: Builds spacecraft for orbital debris removal and satellite servicing.

4+ YOE4+ years embedded systems programming; C/C++ proficiency; design, build, and test embedded software; mentoring ability.

C/C++, Linux, CCSDS, CAN, Ethernet/IP, SPI, Yocto, Buildroot, cFS, F Prime, Git, GTest, Python

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Software Development Engineer in Test II (SDET) – ArcGIS Enterprise

Redlands, California, United States

$101k-$167k/yr OnsiteFull Time

Esri: Developing software for digital mapping and spatial data analysis.

2+ YOE2+ years in a similar role; proficiency in Java, C++, C#, or Python; experience with test automation frameworks; knowledge of CI tools; bachelor's in a related field.

Java, Python, C++, C#, Selenium WebDriver, Appium, JUnit, PyUnit, Jenkins, Chef

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1mo

Principal Software Engineer - Air Traffic Systems (Onsite)

Fullerton, California, United States

$118k-$225k/yr OnsiteFull Time

RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.

8+ YOEDegree in STEM with 8+ years in software engineering; or advanced degree with 5+ years; Unix/Linux, C, embedded/real-time safety-critical software; software testing; CM systems; US citizenship.

Unix/Linux, C, ClearCase, ClearQuest, Jira, Bitbucket/Git, DOORS, Python, SQL, MATLAB, bash scripting, kernel development, VxWorks

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Senior Software Engineer, Infrastructure & Simulation

Huntington Beach, California, United States

$165k-$220k/yr OnsiteFull Time

Mach Industries: Designs and manufactures autonomous unmanned aerial vehicles for defense.

5+ YOE5+ years building production systems or developer infrastructure; strong C++ and Python/Rust/C; experience with simulation/test/validation frameworks; CI/CD, Docker; distributed/cloud compute; Jenkins/GitHub Actions; Terraform.

C++, Python, Rust, C, Docker, Jenkins, GitHub Actions, Terraform, CI/CD, Linux

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1mo

Software Engineer III – Ground Data Systems (Lunar Rover Mission)

Los Angeles or Altadena

$165k-$231k/yr OnsiteFull Time

Blue Origin: Develops reusable rockets and systems for human spaceflight.

5+ YOE5-6 years of space vehicle software experience; Proficient in C++; experience with cameras, motors, sensors; hardware bring-up; requirements negotiation; Git; automated testing; CI; Python, RTOS, CMake preferred.

C++, Git, Python, RTOS, CMake

2mo

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2mo

Integration & Test Engineer - Effector Systems

Hawthorne or Los Angeles

$130k-$160k/yr OnsiteFull Time

CHAOS Industries: Develops advanced radar and sensor systems for military defense

3+ YOEHands-on hardware/software integration, verification, and validation of effector systems; develop and execute test procedures; prototype-oriented integration experience.

Python, C/C++, Git, MAVLink, CAN, UART, SPI, I2C, PX4, ArduPilot, QGroundControl, Mission Planner, MATLAB/Simulink, GPS, Telemetry, Linux

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2mo

Associate Software Engineer–Vehicle Management Systems

Seal Beach, California, United States

$106k-$144k/yr OnsiteFull Time

BoeingNYSE: BA: Designs and manufactures commercial aircraft and defense systems.

2+ YOE2+ years in C/C++, Python or shell scripts; UNIX/Linux; RTOS; flight-critical systems testing; DevOps tools (GitLab CI/CD, Git Bash, Gradle, Maven, Jenkins, Artifactory); ability to obtain Top Secret/SCI.

C, C++, Python, Shell Scripting, UNIX, LINUX, RTOS, GitLab CI/CD, Git Bash, Gradle, Maven, Jenkins, Artifactory

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Prompt Engineer, AI

Los Angeles, California, United States

RemoteFull Time

HerbalifeNYSE: HLF: Sells nutrition, weight management, and personal care products globally.

5+ YOE5+ years in AI/ML/NLP with focus on LLMs and prompt engineering; strong testing, experimentation, and ethics in AI; Python for automation; experience with LLM APIs and RAG.

Python, OpenAI API, Anthropic API, Azure OpenAI, Vector databases, RAG

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1mo

Quality Engineer, Level 4

Los Angeles or Santa Monica

$107k-$161k/yr OnsiteFull Time

SnapNYSE: SNAP: Develops social media applications and augmented reality technology.

2+ YOE2+ years QA experience; strong automation skills in Python, C/C++, Java; Jira/Git proficiency; test planning and documentation.

Python, C/C++, Java, Jira, Git

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QA Automation Engineer

Los Angeles, California, United States

$150k-$175k/yr HybridFull Time

VikingNYSE: VIK: Provides destination-focused river, ocean, and expedition cruise voyages.

6+ YOE6+ years QA automation for enterprise apps; Selenium WebDriver; automation frameworks in Java, C#, or Python; API testing; CI/CD integration; cloud (Azure).

Selenium WebDriver, Java, C#, Python, TestNG, NUnit, JUnit, Azure DevOps, REST APIs, CI/CD, Azure

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Marketing Web Developer

Irvine or Lakewood or Las Vegas or Mesa or Provo or San Diego or Seattle

$133k-$175k/yr HybridFull Time

Google Fiber: Provides high-speed fiber-optic and wireless internet access services.

4+ YOE4 years React/Typescript/JavaScript; Bachelor's degree or equivalent; experience with A/B testing and analytics platforms.

React, Typescript, JavaScript, Optimizely, Google Analytics 4, Google Tag Manager, BigQuery, Contentful, Sanity, KMS Lighthouse, Python

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2mo

Quality Assurance Engineer (Mobile Applications)

Irvine, California, United States

$100k-$140k/yr OnsiteFull Time

TP-Link: Global manufacturer of networking hardware and smart home devices.

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

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1mo

Quality Engineer, Level 4

Los Angeles or Santa Monica

$91k-$161k/yr OnsiteFull Time

SnapNYSE: SNAP: Provides visual messaging software and augmented reality wearable devices.

2+ YOE2+ years QA experience; Bachelor in a technical field; Python, C/C++, Java; Jira, Git; automation and testing of software/hardware.

Python, C/C++, Java, Jira, Git, Automation

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1mo

Principal GNC Engineer

Denver or Long Beach

$180k-$260k/yr OnsiteFull Time

True Anomaly: Develops autonomous spacecraft and software for space security missions.

15+ YOELead end-to-end GNC design, testing, and operations; develop flight software; perform state estimation, sensor fusion, and navigation analyses; mentor engineers.

C++, Python, GNC flight software, Star trackers, IMUs, GNSS, 6-DOF simulations, SIL/HIL, Monte Carlo, covariance analysis

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Principal Design Verification Engineer

Irvine, California, United States

$160k-$237k/yr OnsiteFull Time

MarvellNASDAQ: MRVL: Designs and develops high-performance semiconductor and infrastructure solutions.

5+ YOEBS in Computer/Electrical Engineering or Computer Science with 10+ years in verification and firmware/software; or MS/PhD with 5+ years. SystemVerilog/UVM; test planning and coverage; Python/Perl; C/C++; Linux; networking knowledge a plus.

SystemVerilog, UVM, Python, Perl, C++, ARM assembly, Linux

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2mo

RF Antenna Engineer

Long Beach, California, United States

$120k-$180k/yr OnsiteFull Time

Vast: Develops and operates commercial artificial-gravity space stations.

3+ YOEBachelor's in electrical engineering; 3+ years RF design/analysis; RF antenna systems experience; RF test and simulation tools experience; schematic capture software.

SPICE, ADS, CST, HFSS, Altium, Orcad, Spectrum Analyzers, VNAs, Power Meters, Cable Analyzers, SDRs, MATLAB, LabVIEW, Python, C/C++, JavaScript

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Lead Verification & Validation Engineer

Palo Alto or Irvine

$130k-$155k/yr OnsiteFull Time

ALTENEuronext Paris: ATE: Provides engineering and technology consulting services to industrial clients.

5+ YOELead V&V strategy, mentor engineers, design/test automation, and oversee automotive software/system validation.

CAN, LIN, Ethernet, FlexRay, dSPACE, Vector VT, DBC, LDF, ARXML, HIL, MATLAB, Python, C/C++, Automotive testing tools

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1mo

Senior Networking QA Engineer

Irvine, California, United States

$110k-$140k/yr OnsiteFull Time

AXON Networks: Develops AI-powered network orchestration software and routers for ISPs

5+ YOE5+ years software or system testing; BS/MS in Electronics/Computer Engineering/CS; experience with CPE, embedded systems, or cloud platforms; strong networking knowledge; REST API testing; Linux; Jira/Xray; excellent communication.

Postman, Wireshark, iPerf, ixChariot, Spirent, Veriwave, Ixia, Robot Framework, Python, Linux, JIRA, Xray