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355 software testing engineer jobs at 153 companies in Mission Viejo, CA

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Software Engineer (Special Projects) - Top Secret Clearance
Hawthorne, California, United States
$125k-$150k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
1+ YOEBachelor's in CS/engineering or 2+ years in software development; 1+ years in C/C++; active Top Secret/SCI or DOE Level Q clearance; able to design and test avionics software.
C++, C, Linux, Bash, Microcontrollers, Firmware, Software Testing, Computer Architecture, Networks
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Software Engineer
Los Angeles, California, United States
OnsiteFull Time
ALKEME Insurance
ALKEME Insurance: Insurance brokerage and risk management services provider.
Design, develop, test, and deploy scalable software; proficiency in one or more languages (Java, Python, C#, JavaScript); bachelor's degree or equivalent experience.
Java, Python, C#, JavaScript, Amazon Web Services (AWS), Microsoft Azure, Google Cloud, Docker, Kubernetes
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Sr Engineer, Software Test
Irvine, California, United States
$100k-$120k/yr OnsiteFull Time
Masimo
MasimoNasdaq: MASI: Develops noninvasive patient monitoring technologies and consumer audio products.
5+ YOESenior Software Test Engineer for medical devices; lead test strategies, V&V, and automation; cross-functional collaboration; 5+ years in medical device testing; degree in related field.
Python, C/C++, Linux, CI/CD, Test Automation
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Software Engineer, Diagnostics
Garden Grove, California, United States
$140k-$180k/yr OnsiteFull Time
Harbinger
Harbinger: Produces electric chassis platforms for medium-duty commercial transport vehicles.
Automotive software engineering with UDS/CAN/ODX, strong Python and C++ skills, diagnostics and unit testing experience, ECU/vehicle hardware validation, and familiarity with ISO 26262; Android development preferred.
UDS, CAN, ODX, Python, C++, Ethernet, LIN, CANdela Studio, Android, ISO 26262
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Staff Software Engineer
Irvine, California, United States
OnsiteFull Time
BD
BDNYSE: BDX: Manufactures medical devices, surgical instruments, and pharmacy automation systems.
7+ YOEBachelor's in CS/IS/engineering required (Master's preferred); 7+ years building large-scale healthcare software; 2-3 years running production on AWS; experience leading engineers; expertise in Go, Java, React/JavaScript, HL7/FHIR, RESTful APIs, cloud services and testing.
Go, Java, React, JavaScript, AWS, AWS Step Function, Airflow, HL7/FHIR, RESTful APIs
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Software Engineer, Engineering Tools
Long Beach, California, United States
OnsiteFull Time
SpinLaunch
SpinLaunch: Develops kinetic launch systems and broadband satellite constellations.
B.S. in CS or software engineering; strong Python; YAML/JSON validation; Git/CI-CD; Linux; test automation; autonomous work; strong communication.
Python, Git, Linux, YAML, JSON, CI/CD, Pydantic, NumPy, SciPy, pandas, matplotlib, Plotly, Dash, Streamlit, Dagster, Airflow, InfluxDB, TimescaleDB, MLflow, Docker, SCPI, VISA, PyVISA, IVI, GPIB, LXI
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Software Engineer - Test
Los Angeles, California, United States
OnsiteFull Time
Revel
Revel: Modern software platform for controlling complex hardware systems.
2+ YOEB.S. in a technical field, 2+ years software engineering experience, 2+ years Python; experience with server infrastructure, CI/CD for HIL, Linux; strong documentation, automation, and security practices.
Python, Rust, Linux, CI/CD
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Staff Engineer, Testing (SW)
Carlsbad, California, United States
OnsiteFull Time
Aptera Motors
Aptera MotorsNASDAQ: SEV: Develops and manufactures high-efficiency solar-powered electric vehicles.
8+ YOE8+ years software development experience, proficiency in Python and C, embedded systems testing experience, Linux and git experience, bachelor's degree in CS/CE/EE, strong communication and leadership ability.
Python, C, C++, Linux, git, Jira, CAN bus, LIN bus, oscilloscope, logic analyzer, multimeter
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Senior Software Engineer - ATS (Onsite)
Fullerton, California, United States
$96k-$182k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: Provides advanced aerospace and defense systems and services.
5+ YOESTEM degree and 5+ years of software engineering experience, or advanced degree and 3+ years. Requires UNIX/Linux, C, software lifecycle, testing, debugging, configuration management, and U.S. citizenship.
UNIX, Linux, C, ClearCase, ClearQuest, Jira, BitBucket, Git, C99, Python, SQL, Matlab, bash, ksh, Perl, Red Hat Enterprise Linux (RHEL), HTML, CSS, JQuery, C#, PHP, Json, VBScript, JavaScript, Angular, DO-178B
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Software Engineer I
Los Angeles, California, United States
$91k-$111k/yr HybridFull Time
Los Angeles Capital Management
Los Angeles Capital Management: Quantitative equity management for global institutional investors.
1+ YOEBachelor's in a quantitative field, 1+ year production software experience, strong Python and SQL skills, familiarity with testing and Git, and effective communication.
Python, FastAPI, Pydantic, GitHub Actions, Snowflake, Prefect, Git, SQL, Azure, Docker, Dagster, Airflow
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Software Engineer
Columbus or Boston or Chicago or Austin or Los Angeles or United States or Canada or United Kingdom or Australia
$125k-$165k/yr HybridFull Time
Loop Returns
Loop Returns: Software platform automating e-commerce returns and post-purchase experiences.
2+ YOE2+ years building web applications, backend services, or APIs. Experience using AI agents in engineering workflows, testing and CI/CD, and familiarity with PHP/Laravel, Vue.js, AWS Serverless, MySQL, or DynamoDB is a plus.
Claude Code, Cursor, PHP, Laravel, Vue.js, MySQL, DynamoDB, Kubernetes, AWS, Serverless, CI/CD, lambdas
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Software Engineer, R&D Platforms
Los Angeles, California, United States
$112k-$200k/yr OnsiteFull Time
Antares
Antares: Designing and manufacturing microreactors for defense and space missions.
4+ YOEBachelor's in a related technical field, 4+ years developing engineering/test/R&D software, strong Python and C++, experience with hardware integration, DAQ, test automation, and data workflows.
Python, C++, NumPy, pandas, SciPy, matplotlib, Plotly, Dash, Jupyter, LabVIEW, NI-DAQmx, cDAQ, NI hardware, DAQ, CAN, Modbus, TCP/IP, OPC UA, MQTT, SCPI, VISA
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Mission Software Engineer, Vehicle Software, Communications
Boston or Costa Mesa
$166k-$220k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
3+ YOEEligible for U.S. Top Secret clearance; BS/MS/PhD in CS, Software Engineering, Math, Physics or related; 3+ years production C++ and/or Rust on Linux; experience with radio integrations (Link 16), data processing, and testing; travel up to 30%.
C++, Rust, Linux, Link 16, Lattice OS, GenAI
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Sr. Engineer, Software Development
New York City or Birmingham or Miami or Tampa or Blue Ash or Cincinnati or Los Angeles
$121k-$173k/yr HybridFull Time
Green Dot
Green DotNYSE: GDOT: Provides mobile banking and payment solutions to consumers and businesses.
5+ YOE5+ years software engineering experience; proficiency in C#; automation testing and end-to-end test automation; cloud experience (AWS/Azure/AKS), Terraform; CI/CD and DevOps tools; container orchestration and observability; must be authorized to work in the U.S. and meet location requirement.
C#, Postman, Bruno, SpecFlow, Cucumber, AWS, Azure, AKS, Azure Cosmos DB, Terraform, Jenkins, TeamCity, GitHub Actions, ArgoCD, Datadog, Prometheus, GitHub Copilot
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Software Test Engineer
Los Angeles, California, United States
$36-$43/hr OnsiteFull Time
Motorola Solutions
Motorola SolutionsNYSE: MSI: Provides mission-critical communications and public safety technology.
Bachelor's in CS/CE/EE or related, strong Python/C/C++ skills, experience on Windows/Linux/MacOS/Android/bare metal, understanding of software testing and networking, U.S. citizenship required, background check and drug test.
Python, C, C++, Windows, Linux, MacOS, Android, Wireshark, TCPDump, PuTTY, Minicom, web browser development tools
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Principal Software Engineer - AI
Woodland Hills or Los Angeles or Alabama or Arizona or California or Colorado or Connecticut or Florida or Georgia or Illinois or Indiana or Kentucky or Massachusetts or Michigan or North Carolina or New Jersey or Nevada or New York or Ohio or Pennsylvania or South Carolina or Texas or Utah or Virginia
$200k-$230k/yr HybridFull Time
Convoso
Convoso: AI-powered contact center platform for outbound sales teams.
10+ YOE10+ years software engineering experience, 5+ years backend work in Python or PHP, expertise building LLM-based AI agent systems, production LLM API integration, MySQL proficiency, and automated testing for AI workflows.
LLM, OpenAI, Claude, GitHub Copilot, MySQL, Python, Django, Flask, PHP, Symfony, Laravel, React
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Software Signals Engineer
El Segundo, California, United States
$69k-$158k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
3+ YOE3+ years experience in signal processing or software development, bachelor's in CS/Computer Engineering/EE/STEM, Top Secret clearance, B.S. level technical background, proficiency in Python/C/C++, experience with RF testing and Agile tools.
Python, C, C++, Jira, Confluence, GitHub, Linux
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Embedded Software Engineer
Irvine, California, United States
$150k-$190k/yr OnsiteFull Time
Turion Space
Turion Space: Builds spacecraft for orbital debris removal and satellite servicing.
2+ YOE2+ years embedded software or test development, experience with C/C++, automated testing in HITL/SITL, strong problem-solving, ability to obtain U.S. security clearance.
C, C++, Google Test, CppUnit, Pytest, CI/CD, HITL, SITL
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Senior Electrical Engineer - Software (Brooklyn, NY, US)
Brooklyn or Ambler or Los Angeles or Seattle
$150k-$170k/yr OnsiteFull Time
Hatch
Hatch: Provides global engineering, project delivery, and professional services.
10+ YOESenior rail vehicle electrical software engineer; 10+ years in software engineering and software QA; BS/MS in Electrical/Computer Engineering; strong communication skills; EIT/PE desirable.
IEEE standards, Software Quality Assurance, Software testing, Rail vehicle software, System integration
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Payload Software Engineer
Irvine, California, United States
$155k-$175k/yr OnsiteFull Time
ICEYE
ICEYE: Operates synthetic aperture radar (SAR) satellite constellations.
6+ YOE6+ years in embedded software using C, C++, and Python; experience with SoC/microcontroller design, Embedded Linux/Yocto, ICD development, communication protocols, and full software lifecycle from requirements to test.
C, C++, Python, Embedded Linux, Yocto, FPGA, SoC, Microcontroller
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