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339 junior software engineer jobs at 138 companies in Westminster, CA

2w
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Software Engineer - Test (Entry-Junior)
Los Angeles or San Francisco
$90k-$161k/yr OnsiteFull Time
Revel
Revel: Modern software platform for controlling complex hardware systems.
0+ YOEBachelor's degree in engineering/physics/computer science,0–2 years' software experience,foundational Python,interest in CI/CD,embedded testing and Linux familiarity,ability to work on hardware-in-the-loop systems,ITAR-eligible status required.
Python, Rust, Linux
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1mo
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JUNIOR SOFTWARE DEVELOPER (C++)
Norco, California, United States
$75k-$110k/yr OnsiteFull Time
VSolvit
VSolvit: Providing technology services and data solutions for government agencies.
0+ YOE0–4 years software development experience; proficiency in C++ for desktop applications; familiarity with OOP, multithreading, Git, CMake, and Python; U.S. Citizenship and active Secret DoD clearance required; CompTIA Security+ required.
C++, Git, CMake, Python, Jira, Confluence, SAFe, Agile
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5d
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Junior Embedded Software Engineer
Los Angeles, California, United States
$100k-$160k/yr HybridFull Time
Observable Space
Observable Space: Developing integrated hardware and software for persistent space observation.
0+ YOE0–2 years embedded software experience, proficiency in C/C++, knowledge of hardware interfaces (I2C,SPI,UART,CAN,PCIe,MIPI), familiarity with embedded Linux and lab tools, strong debugging and communication skills.
C, C++, PCIe, SPI, I2C, UART, MIPI CSI-2, GPIO, CAN, Ethernet, multimeter, oscilloscope, Embedded Linux, Linux kernel, Yocto, Buildroot, Zephyr RTOS
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1d
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Software Engineer
Santa Monica, California, United States
$146k/yr RemoteFull Time
Edmunds
Edmunds: Provides automotive research, pricing data, and vehicle shopping tools.
2+ YOEBachelor's in Computer Science or Software Engineering, 2 years experience, knowledge of AWS, Terraform, CI/CD, Git, Python, and REST APIs.
AWS, Terraform, CI/CD, Git, Python, REST APIs, GitLab
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2mo
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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 degree in CS/Engineering or equivalent experience; proven software development with Java, Python, C#, or 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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11h
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Software Engineer, Data (Starlink)
Hawthorne or Redmond
$125k-$195k/yr OnsiteFull Time
SpaceX
SpaceX: Designs and launches advanced rockets and satellite internet constellations.
1+ YOE1+ years software or data engineering experience; bachelor's in CS/data/engineering/math/physics or 2+ years professional software experience; experience with big data systems and modern programming languages.
Scala, Java, C#, Python, Go, Angular, React, Apache Kafka, Spark, Flink, Hive, Delta Lake, PostgreSQL, CockroachDB, Grafana, Metabase, Microsoft Power BI
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1w
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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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2w
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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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1w
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Software Engineer / Principal Software Engineer
Palmdale or San Diego or El Segundo
$92k-$171k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
2+ YOESTEM degree with 2+ years (software) or 5+ for principal, experience with coding languages, ability to obtain US Secret clearance/SAP, and willingness to travel up to 25%.
Blazor, .Net, C#, Azure DevOps, Selenium, Oracle, SQL Server, Transact SQL, Git, HTML5, Javascript, AIGit
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4w
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Sr. Software Engineer
Irvine, California, United States
$160k-$180k/yr RemoteFull Time
Viant Technology
Viant TechnologyNASDAQ: DSP: Provides an AI-powered demand-side platform for digital advertising.
2+ YOEMaster's degree in CS/IT/Applied Data Science, 2+ years software engineering experience, proficiency in GoLang and Java, MySQL/Oracle, AWS (EC2, S3, Lambda, RDS), and building scalable, low-latency distributed systems.
GoLang, Java, MySQL, Oracle, AWS, EC2, S3, Lambda, RDS
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1w
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Software Engineer
Colorado Springs or Irvine or Longmont or Fremont or Rochester or San Jose
$111k-$148k/yr OnsiteFull Time
Western Digital
Western DigitalNASDAQ: WDC: Design and manufacture data storage devices and systems.
0+ YOEPursuing or recent Bachelor's/Master's in a technical field; experience with C/C++, Python, Java, Go, SQL, or JavaScript through coursework or internships; familiarity with software fundamentals, debugging, and development tools.
C, C++, Python, Java, Go (Golang), SQL, JavaScript, Microsoft Office, Git, Linux, IDEs
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3mo
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Software Engineer, Flight Software Engineer
Huntington Beach, California, United States
$125k-$220k/yr OnsiteFull Time
Mach Industries
Mach Industries: Designs and manufactures autonomous unmanned aerial vehicles for defense.
0+ YOEStrong proficiency in C/C++ for embedded systems; real-time OS experience; flight software knowledge; MATLAB/Simulink; embedded systems background.
C, C++, Embedded Systems, Real-Time Operating Systems, MATLAB, Simulink, Rust
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4h
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Application Software Engineer
San Francisco or Los Angeles
$125k-$175k/yr HybridFull Time
Sift
Sift: Software platform for high-frequency hardware telemetry observability.
2+ YOE2+ years software or data engineering experience, proficiency in Python and REST APIs, EMR not relevant, strong communication, problem solving, and STEM bachelor's degree required.
Python, REST APIs, Sift APIs, Kafka, InfluxDB, SQL, AWS, GCP, Azure
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1mo
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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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2mo
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Software Engineer, Tech Ops
Santa Monica or Los Angeles or United States
$135k-$167k/yr HybridFull Time
ZipRecruiter
ZipRecruiterNYSE: ZIP: Online employment marketplace connecting job seekers and employers.
2+ YOE2+ years software engineering or systems integration experience; proficiency in TypeScript and/or Python; API and third-party integration experience; experience using AI developer tools (Cursor, Copilot, Claude).
TypeScript, Python, Cursor, Copilot, Claude, NetSuite, Okta, ADP, Google, Salesforce
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2d
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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.
U.S. citizen able to obtain/maintain DoD Secret clearance; bachelor’s in Software Engineering or related STEM; experience with C/C++, Linux, embedded/real-time systems; strong communication skills.
C, C++, Linux, containers
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4w
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Mission Software Engineer, EW
Costa Mesa, California, United States
$166k-$220k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
1+ YOE1–4 years software engineering experience; proficiency in Haskell, Rust, C++, Go, or TypeScript; Linux experience; strong CS fundamentals; eligible for U.S. Top Secret/SCI; willing to travel up to 30%.
Haskell, Rust, C++, Go, TypeScript, Linux, Lattice OS, Nix, NixOS, CI/CD
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3w
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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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3w
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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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1mo
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Software Engineer
Irving or San Francisco or Los Angeles
$74k-$137k/yr HybridFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global communications, advertising, and digital transformation holding.
2+ YOEB.S. in CS or related required; 2+ years Java experience; Unix and shell scripting; professional experience with Spring, Hibernate, Maven, Git; SQL and relational DB experience; Hadoop, Spark, Scala, Docker, Kubernetes, AWS are pluses.
Java, Unix, Unix Shell Scripts, Spring, Hibernate, Maven, Git, SQL, Hadoop, Spark, Scala, Docker, Kubernetes, AWS, HBase, Ansible, Postgres, Angular, HTML, JavaScript
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