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438 mid level software engineer jobs at 186 companies in Simi Valley, CA

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Software Engineer - Level 2
Edwards Air Force Base or Fort Worth or Las Vegas or Marietta or Palmdale or Patuxent River
$77k-$152k/yr OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
US citizen with a Bachelor's or Master's in software/computer/engineering/physics, experience in software development/design/integration/test, and expertise in object-oriented development and relevant tools.
MATLAB, Simulink, Linux, Microsoft Visual Studio, Jenkins, Git, Bitbucket, VersionOne, JIRA, MPI, OpenMP, Fortran, C, C++, Python, bash, Confluence
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2mo
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Software Engineer
Santa Monica, California, United States
$125k-$159k/yr RemoteFull Time
Edmunds
Edmunds: Provides automotive research, pricing data, and vehicle shopping tools.
3+ YOEMid-level frontend/backend software engineer with experience in client-side apps, APIs, and cloud platforms; strong JS, React, Node.js, REST/GraphQL, and performance optimization.
React, Node.js, REST, GraphQL, gRPC, AWS, GCP, Azure
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4d
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Mid-Level Full-Stack Software Developer (Contract)
Culver City, California, United States
OnsiteContract
Wild Card Creative Group
Wild Card Creative Group: Marketing and creative services for the entertainment industry.
Proven end-to-end software development experience with JavaScript/TypeScript, HTML, CSS, backend API development, automation and strong problem-solving skills.
JavaScript, TypeScript, HTML, CSS, RESTful APIs, Git, Adobe UXP, Adobe ExtendScript, Creative Cloud scripting, CEP
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Mid Level Engineer (Product Owner)
Oxnard, California, United States
OnsiteFull Time
Engineering Services Network
Engineering Services Network: Independent defense contractor providing engineering, program management, and IT services.
3+ YOE3-5 years engineering experience; BS in Engineering; strong math background; engineering software proficiency; good communication and teamwork.
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3w
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Software Engineer - Level 3/4
Manhattan Beach or Morrisville or Aurora or Fairfax
$109k-$213k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
5+ YOERequired active Top Secret/SCI clearance, 5+ years software experience (varies by level), proficiency with Java/C++/Python, Agile and automated testing experience, strong communication and critical thinking.
Java, C++, Python, Perl, Rust, Docker, Kubernetes, Jira, Confluence, Bitbucket, Cucumber, Behave, Eggplant, Selenium, Cypress, Cloud, DevOps, CI/CD
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Software Engineer (Level 4) - AHT
Redondo Beach, California, United States
$142k-$213k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
4+ YOEActive U.S. Top Secret clearance, 4+ years software engineering experience (varies by degree), strong Java or Python skills, containerization (Docker), Apache Kafka, Linux, cloud and CI/build tool experience.
Java, Python, Docker, Apache Kafka, Linux, Maven, Gradle, CMake, Git, JUnit, pytest, GoogleTest, TestComplete, Kubernetes, OpenShift, AWS, Azure, GCP, Sonar, Fortify
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Software Engineer - Maritime Autonomy (AUV/UUV)
Ventura, California, United States
$150k-$170k/yr OnsiteFull Time
GRVTY
GRVTY: Develops defense technology, cyber, and intelligence software solutions.
Bachelor's in CS/CE or related, mid-level software engineering experience with autonomous systems, proficiency in C++/C#, experience with communication protocols (UART, SPI, I2C, RS-485, Ethernet, CAN), familiarity with DevOps/CI/CD, U.S. citizenship required.
C++, C#, UART, SPI, I2C, RS-485, Ethernet, CAN bus, DevOps, CI/CD
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Software Engineer
Los Angeles, California, United States
OnsiteFull Time
ALKEME Insurance
ALKEME Insurance: Insurance brokerage and risk management services provider.
Bachelor's in CS/Engineering or equivalent, proven software development experience with Java/Python/C#/JavaScript, familiarity with web frameworks and databases, strong problem-solving and communication skills.
Java, Python, C#, JavaScript, React, Angular, Node.js, SQL, NoSQL
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2mo
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Software Engineer (Starship)
Hawthorne or Brownsville
$125k-$175k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
1+ YOEBachelor's degree in CS/engineering/data science/math/physics or 2+ years in software/data pipelines; 1+ year in data engineering/software roles; strong SQL; Python/C#; pipelines/ETL; data tools; VCS/CI/CD.
SQL, Python, C#, Airflow, Prefect, dbt, Pandas, NumPy, PyTorch, Power BI, Grafana, Metabase, Tableau, Git, CI/CD
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5d
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Software Engineer 2
Agoura Hills, California, United States
$73k-$108k/yr HybridFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global advertising and digital transformation agency holding.
Experienced software engineer with strong engineering fundamentals, US work authorization without sponsorship, ability to work hybrid and participate in on-call rotations; collaborative, TDD and ownership mindset.
Java, Scala, Kotlin, TypeScript, Amazon Web Services, Kubernetes, Kafka, React
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Software Developer
Port Hueneme, California, United States
$110k-$140k/yr OnsiteFull Time
Resource Management Concepts
Resource Management Concepts: Provides IT, cybersecurity, and engineering solutions to government agencies.
3+ YOEActive Top Secret (T5) clearance, IAT Level II certification, 3–7 years developing DoD software, bachelor's degree in a related field, Linux experience, proficiency in C/C++/Java, Agile experience.
Linux, C, C++, Java, Agile
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Ground Software Engineer (Mid Career) - Millennium Space Systems
Chantilly or El Segundo
$128k-$189k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
Bachelor's in CS/CE/AE or related; experience designing and developing production software, scripting and backend development; ability to obtain U.S. security clearance (Secret required); support classified testing and integrations.
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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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Ground Software Engineer (Mid Career) - Millennium Space Systems
Chantilly or El Segundo
$128k-$189k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
Bachelor's in CS/CE/AE or related; experience designing and developing production software, scripting and backend applications; ability to obtain U.S. Secret security clearance (U.S. citizenship required); must meet U.S. export control (US Person) requirements.
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3w
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Software Engineer II
El Segundo or California
$120k-$140k/yr RemoteFull Time
Fabletics
Fabletics: Fabletics sells activewear through a membership-based subscription model.
3+ YOE3+ years software engineering experience; backend services with Node.js; expert SQL; experience with event-driven architecture (Kafka preferred); strong communication and AI literacy.
Node.js, TypeScript, Kafka, SQL, RESTful APIs
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4d
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Software Engineer 3
Agoura Hills or Chicago or Santa Barbara or Atlanta or Needham
$89k-$136k/yr HybridFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global communications, advertising, and digital transformation holding.
Experienced engineer with foundational software skills; familiarity with Java, Scala, Kotlin, TypeScript, AWS, Kubernetes, Kafka, and React; hybrid 3 days/week; must be authorized to work in the US without sponsorship.
Java, Scala, Kotlin, TypeScript, Amazon Web Services, Kubernetes, Kafka, React
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2mo
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Ground Software Engineer
Torrance or Los Angeles
$123k-$150k/yr OnsiteFull Time
K2 Space
K2 Space: Develops high-power satellite platforms for heavy-lift launch vehicles.
3+ YOE3+ years software engineering experience or relevant degree; experience with Rust, TypeScript/Vue, backend/frontend development, APIs, SQL, Docker/Kubernetes, networking and data streaming; strong collaboration and mentoring skills.
Rust, TypeScript, Vue, Go, C++, Java, C#, JavaScript, React, Svelte, Docker, Kubernetes, WebSockets, Server-Sent-Events (SSE), HTTP, gRPC, SQL, PostgreSQL, NATS, Pulsar, TCP/IP, UDP, QUIC, SOC2, FedRAMP
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3w
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Software Engineer II
Orlando or Burbank
$112k-$190k/yr HybridFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces movies, operates theme parks, and provides streaming services.
3+ YOE3+ years software engineering experience for web or enterprise apps; experience with Laravel/WordPress/LAMP, JavaScript/React/Java, REST/XML/HTML/CSS; Agile, testing, and CI/CD familiarity; bachelor's degree or equivalent.
Laravel, WordPress, LAMP, JavaScript, React, Java, REST, XML, HTML, CSS, Jira, Git, GitHub Actions, Jenkins, Confluence, ServiceNow, TOGAF, WCAG, WAI-ARIA
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2mo
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Rust Software Developer
Arlington or McLean or Chantilly or Beavercreek or San Antonio or Huntsville or Annapolis Junction or El Segundo or Rome or Aurora or Colorado Springs or Lexington
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
3+ YOE3+ years software engineering with Rust, Kubernetes and containerized services, autoscaling strategies, CI/CD implementation, experience with Python or C++, Secret clearance, and Bachelor’s degree.
Rust, Kubernetes, HPA, VPA, cluster autoscalers, GitHub Actions, GitLab CI, Jenkins, Python, C++, SonarQube, Clippy, cargo-deny, cargo-audit, SysML, DoDAF, UAF
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Software Engineer II
Seattle or Glendale
$123k-$165k/yr HybridFull Time
The Walt Disney Company
The Walt Disney CompanyNYSE: DIS: Produces media content and operates global theme parks.
3+ YOE3+ years professional software development; strong Python skills; hands-on GenAI or conversational AI experience; familiarity with retrieval/embeddings/vector search, prompt engineering, API integration, LLMOps, and AI developer tools; Bachelor’s degree required.
Python, Azure, Azure OpenAI, Azure AI Foundry, Azure Functions, Azure App Service, Application Insights, AWS, GCP, Microsoft Teams, Snowflake Cortex, Cortex Analyst, MongoDB, Atlas Vector Search, Docker, Cursor, Claude Code, CI/CD
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