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40 software engineer i jobs at 24 companies in Simi Valley, CA

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Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
1d
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Software Engineer I/II
Pasadena, California, United States
$88k-$135k/yr OnsiteFull Time
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
0+ YOEDegree or equivalent experience in software/engineering fields, 0+ yrs software engineering experience (0–5 yrs depending on level), proficiency in C++/Python, ROS/ROS 2, Linux, Git and CI/CD, hardware integration experience.
C++, Python, ROS, ROS 2, Linux, Git, CI/CD, CAN, CANopen, SpaceWire, MIL-STD-1553, EtherCAT, SPI, I2C, Ethernet, TCP/IP, Modbus, OPC UA, PLC
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1w
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Software Engineer I, Mission Software
Long Beach, California, United States
$111k-$157k/yr OnsiteFull Time
Vast
Vast: Develops and operates commercial artificial-gravity space stations.
1+ YOEBachelor's in CS/math/engineering required; 1+ year academic/internship software experience preferred. Experience with full-stack development, APIs, containers, time-series data, and modern web frameworks.
Docker, Kubernetes, React, Next.js, Vue, GraphQL, REST, RPC, Node.js, OAuth, Terraform, Helm, SQL, Monitoring, Observability, Instrumentation
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2w
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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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4w
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Software Engineer I, AI
Grand Rapids or Los Angeles or Washington or Troy or New York or Houston or Chicago or Owings Mills or Columbia or Richmond or Memphis or Raleigh or Boston or San Jose or San Francisco or Austin or Kalamazoo or Spokane or Denver or Fort Worth or Atlanta or Orlando or Dallas or Wilmington or Phoenix or San Antonio or Milwaukee or Madison or McLean or Huntsville or Woodbridge or Stamford or Miami or Philadelphia or Charlotte or Greenville or West Palm Beach or Costa Mesa or St. Louis or Fort Lauderdale or Seattle or Rosemont or Pittsburgh or Tulsa or Cincinnati or Cleveland or Columbus or Akron or Cherry Hill or Minneapolis or Anchorage or Salt Lake City or Norfolk or Jacksonville or Boulder or Nashville or Oak Brook or Las Vegas or Indianapolis or San Diego or Baton Rouge or Jackson or Tallahassee or Tampa or Omaha
$85k-$100k/yr OnsiteFull Time
BDO USA
BDO USA: Provides accounting, tax, and business advisory services to organizations.
1+ YOE1+ years software engineering experience; experience with AI/ML and integrating large language models preferred. Familiarity with databases/SQL, debugging and monitoring, Microsoft development stack (.Net, C#, Azure) preferred; HS required, bachelor\u0002s preferred.
Microsoft Visual Studio, VS Code, Microsoft Azure DevOps, GitHub, Microsoft SQL Server, Azure SQL, Microsoft Entity Framework, .Net, C#, Azure, SQL
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1mo
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Staff Engineer I - Software Engineer
Westlake Village or Irvine or Dallas
$122k-$151k/yr OnsiteFull Time
Western Alliance Bank
Western Alliance BankNYSE: WAL: National commercial bank providing specialized financial and business solutions.
5+ YOE5+ years software development experience; Bachelor's degree required; proficiency with TypeScript, React, Angular, REST API, Azure/AWS and Azure DevOps; leadership experience, financial services and regulatory knowledge; up to 10% travel.
React, Angular, TypeScript, HTML, CSS, REST API, Azure, AWS, Azure DevOps
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Reactor Software Engineer I/II
Los Angeles, California, United States
$120k-$160k/yr OnsiteFull Time
Antares: Designing and manufacturing microreactors for defense and space missions.
0+ YOEBachelor's degree in CS/EE or related; 0–5 years depending on level; strong Python 3, hardware-integrated software experience, Git, testing, and ability to obtain U.S. export authorizations (ITAR).
Python, asyncio, Git, pytest, MQTT, NATS, DDS, ZeroMQ, gRPC, C, C++, Rust, Linux
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1mo
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Senior Software Engineer I, Fan Based Marketing
Beverly Hills or Los Angeles or United States
$140k-$175k/yr RemoteFull Time
Live Nation Entertainment
Live Nation EntertainmentNYSE: LYV: Sells tickets and produces concerts for live entertainment events.
5+ YOE5+ years software development experience; Bachelor's in CS/Engineering; strong back-end skills with Java, Python, SQL; experience with AWS and Databricks; familiarity with GitHub/GitLab, CI/CD, REST APIs; marketing automation/integrations a plus.
Databricks, Amazon Web Services (AWS), Salesforce Marketing Cloud, GitHub, GitLab, CI/CD, Java, Python, SQL, HTML, CSS
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3w
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Software Developer I
Valencia, California, United States
$93k-$150k/yr OnsiteFull Time
B&B Manufacturing: Manufactures precision machined components and assemblies for aerospace industries.
0+ YOEBachelor's in Computer Science/Information Systems/Software Development, 0-2 years programming or related experience, familiarity with PHP, APIs, ERP, data processing, reporting, and Microsoft 365; strong communication and adherence to ITAR U.S. person requirement.
PHP, APIs, Microsoft 365, ERP, AI tools, databases
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1mo
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Principal Software Engineer I - Distributed Systems - Elasticsearch
United States or Seattle or Los Angeles or San Francisco or New York City
$133k-$211k/yr RemoteFull Time
Elastic
ElasticNYSE: ESTC: Software platform for search, security, and observability.
Expertise in distributed systems and consensus algorithms, strong Java/JDK skills, deep algorithms knowledge, experience building/debugging large distributed systems, and managing projects involving multiple engineers.
Java, JDK, Lucene, Netty, Elasticsearch
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1mo
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Principal Embedded Software Engineer
El Segundo, California, United States
$201k-$314k/yr OnsiteFull Time
Radiant
Radiant: Designs and manufactures portable, mass-produced nuclear microreactors.
8+ YOELead embedded software architecture for I&C systems; 8+ years; onsite in El Segundo; RTOS experience; C/C++.
Zephyr RTOS, NuttX, ThreadX, Embedded C, C++, CMake, Simulink Autocode C++ export
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3mo
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MAINTENANCE ENGINEER I - R&M
Manhattan Beach, California, United States
$20-$21/hr OnsiteFull Time
24seven Hotels
24seven Hotels: Manage and operate premium lifestyle and select-service hotel properties.
2+ YOEMaintenance engineer with 2+ years of commercial property or hotel maintenance experience; ability to use maintenance software; strong guest service skills.
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4d
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2026 Raytheon Full Time- Software Engineer I -(Onsite)
El Segundo, California, United States
$63k-$120k/yr OnsiteFull Time
RTX
RTXNYSE: RTX: RTX provides advanced aerospace and defense systems and services.
1+ YOEU.S. citizenship and ability to obtain DoD Secret clearance; Bachelor’s in STEM required; 1+ year embedded software development experience; development in C/C++/Ada; RTOS experience; agile teamwork; strong troubleshooting and communication skills.
C, C++, Ada, UNIX, Linux, Windows, VxWorks
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2w
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Software I&T Engineer , Amazon Leo for Government
Northridge, California, United States
OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
3+ YOEUS citizen able to obtain TS/SCI,3+ years professional software development,2+ years design/architecture experience,experience with C#,C++,Java or Perl,Bachelor's degree in CS/Engineering/Math.
C#, C++, Java, Perl, CI/CD
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4d
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Research Engineer (Engineer I) - UAS Hardware & Software
Hawthorne, California, United States
$75k-$85k/yr OnsiteFull Time
Systems Technology Inc
Systems Technology Inc: Provides flight control engineering and specialized human-machine simulation systems.
BSc in engineering, strong C/C++ and/or Python skills, hands-on UAS hardware experience, MATLAB/Simulink familiarity, autopilot firmware and MAVLink knowledge, aerospace industry experience.
C/C++, Python, MATLAB/Simulink, ArduPilot, PX4, MAVLink, HIL, SIL
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1mo
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Software QA Automation Engineer I
Moorpark, California, United States
$82k-$116k/yr OnsiteFull Time
AeroVironment
AeroVironmentNASDAQ: AVAV: Designs and manufactures unmanned aircraft and tactical missile systems.
1+ YOEBachelor's or equivalent, 1+ years QA/test engineering experience, familiarity with Linux/Windows, Docker, Python, C++/C# a plus, Microsoft Excel/Word proficiency, ability to work in lab/R&D, U.S. person required.
C++, C#, Linux, Windows, Docker, Python, Microsoft Excel, Microsoft Word
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1d
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Experienced Hardware Emulation Software Engineer
El Segundo, California, United States
$135k-$183k/yr OnsiteFull Time
Boeing
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
3+ YOEBachelor's degree or equivalent,3+ years with real-time simulation development,proficiency in C++,Java,JavaScript,Perl,Python,Visual Basic,experience with hardware-in-the-loop and I/O device programming,and active U.S. Secret security clearance.
C++, Java, JavaScript, Perl, Python, Visual Basic, GitLab, Bitbucket, VME, PCIe
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1mo
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AI Engineer I
United States or Los Angeles
$90k-$119k/yr RemoteFull Time
WelbeHealth
WelbeHealth: Provides integrated medical and social care for vulnerable seniors.
Bachelor's in CS/DS/SE required. Working Python skills, familiarity with LLMs, embeddings, RAG, prompt engineering, vector DBs, cloud platforms, Git, and basic AI/ML concepts; eager to learn.
OpenAI, Anthropic Claude, Google Gemini, Python, Microsoft Azure, AWS, Google Cloud Platform, Pinecone, Weaviate, Chroma, LangChain, LangGraph, Git, Docker
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1mo
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Platform Engineer, AI (Levels I, II, III)
Denver or Long Beach
$120k-$235k/yr HybridFull Time
True Anomaly
True Anomaly: Develops autonomous spacecraft and software for space security missions.
Software engineering experience (Python/TypeScript), familiarity with LLM APIs, REST/webhook integrations, ability to obtain Top-Secret clearance and U.S. work-authorization, strong communication and collaboration skills.
Python, TypeScript, REST APIs, webhooks, MCP, CrewAI, Pydantic AI, LangChain, AWS, Azure, GCP, Slack, Jira, Confluence, CI/CD
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1mo
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Simulation Engineer I, Arc Vehicle
Playa Vista, California, United States
$71k-$124k/yr OnsiteFull Time
Inversion Space
Inversion Space: Building autonomous re-entry vehicles for global space-to-Earth cargo delivery.
1+ YOEBachelor's in CS/CE/Aerospace/Mechanical or equivalent experience; 1+ years internship/research/professional experience in software or physics-based simulation; proficiency with C++ or Python on Linux; strong physics and numerical analysis; familiarity with Git.
C++, Python, Linux, Git, MATLAB/Simulink, ROS/ROS2, Docker, CI/CD, HPC, SIL, HIL
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2mo
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Embedded Firmware Engineer
Carson City or Webster or Harbor City or Platform or Jessup or Clinton or Newark or Longmont
$79k-$150k/yr OnsiteFull Time
Vitesse Systems
Vitesse Systems: Designs and manufactures antenna and thermal systems for defense.
2+ YOEBS or MS in Electrical Engineering or related robotics field; 2+ years Level I, 5+ Level II, 8+ Level III firmware/embedded software; C++, Python; RTOS; hardware bring-up; ITAR compliance.
C++, Python, C, VHDL, Verilog, Linux, RTOS, ROS, Git, EtherCAT, SPI, CAN, I2C, UART, RS-232
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