Software Engineer Jobs in California, United States

Software Engineering team at Northrop Grumman develops secure, mission-critical software for defense systems. The role synthesizes requirements into test plans, executes qualification testing, and collaborates with systems and development engineers to ensure software integrity.

Mission Planning Systems team at Northrop Grumman develops state‑of‑the‑art mission planning software. The role designs, develops, tests, and debugs applications, maintains CI/CD pipelines, creates installers, and supports build and deployment within a cross‑functional scrum.

PlusAI is pioneering AI-based virtual driver software for autonomous trucks. This role owns the fullstack product surface, building web applications and APIs that enable autonomy teams to author simulations and analyze data.

Northrop Grumman Aeronautics Systems seeks Software Engineer and Principal Software Engineer, Java to develop enterprise Java solutions in a SOA environment. The role designs, implements, and delivers Java applications, collaborates with system engineers and integration teams, and follows the full software lifecycle.

Northrop Grumman Aeronautics Systems seeks a Software Engineer/Principal Software Engineer, Java to develop, integrate, test and maintain desktop, web and backend services within an Integrated Product Team. The role collaborates with hardware, system test and other software teams, builds CI/CD pipelines, identifies technical risks and reports progress to senior leadership.

Application Software team at SpaceX builds mission‑critical platforms that accelerate vehicle software delivery, testing, and operations for Falcon 9, Starship, Dragon and Starlink. The Software Engineer, Site Reliability Engineering role designs, deploys, and scales these platforms, collaborates with engineers to create operable systems, and participates in on‑call rotation and incident response.

Mission Experience team at Northrop Grumman develops autonomy solutions and in-house software for advanced Mission Management systems. The Front-End Software Engineer designs, builds, tests and maintains user interfaces using HTML, CSS, JavaScript, React/Angular and integrates them with backend APIs, collaborating with designers, product and QA teams.

Northrop Grumman Aeronautics Systems team builds advanced aerospace software and ensures mission‑critical quality. The Software Quality Engineer implements quality standards, audits processes, and supports CMMI and AS9100 compliance, while the Principal role leads quality planning and supplier evaluation across multiple programs.

Northrop Grumman, Embedded Systems team builds mission‑critical software for aerospace and defense platforms. The role designs, develops, and maintains embedded firmware and software, applying Agile, OOP, and memory‑mapping techniques while collaborating with customers and cross‑functional teams.

Software Engineer/Principal Software Engineer – Data Analyst on Northrop Grumman Aeronautics Systems, building enterprise toolsets to exploit large operational data sets for communication subsystems and advanced payloads. Day‑to‑day duties include developing Python/Java/C++/MATLAB solutions, maintaining CI/CD pipelines, and collaborating with Cloud, Networking, and DevSecOps teams.

Flight Software Engineering team at Mach Industries builds safety‑critical real‑time embedded software for next‑generation autonomous defense platforms. The role designs, develops, and tests flight software in C, C++, and Rust, collaborating with hardware, systems, and aerospace specialists to integrate avionics, sensors, and control systems.

Data & ML Platform team builds and operates the compute platform for large‑scale data processing, simulation, auto‑labeling and model training. The role improves reliability and efficiency of Kubernetes infrastructure, creates self‑service onboarding, and develops reusable batch and workflow capabilities for petabyte‑scale workloads.

Northrop Grumman Aeronautics Systems seeks Embedded & Real Time Software Engineers to design, develop, integrate and test mission‑critical software for flight systems. The role involves full‑life‑cycle development in Agile Scrum teams, working with real‑time operating systems, C/C++, Python and CI/CD tools alongside systems engineers and hardware designers.

Northrop Grumman Defense Systems Mission Planning team builds state-of-the-art mission planning software. The role designs, develops, tests, and debugs applications, maintains CI/CD pipelines, sets up development environments, creates installers, and supports build processes within a cross‑functional scrum.

AWS Infrastructure Services' Data Center Network organization, specifically the DCFC (DCF Controllers) team within CLOS Fabric Engineering, builds software controllers that monitor network/fabric state, recover out-of-service capacity, enable network scaling, manage IP allocation, and plan decommissioning. As a Software Development Engineer, you will build and maintain production-quality distributed systems, develop tools to collect and rationalize data from multiple sources, partner with Networ

Data Engineering – Data Infrastructure team at Plus 2 builds tools that surface the most valuable moments from petabytes of autonomous‑driving fleet data for model training and evaluation. The role develops mining, retrieval and ranking methods, builds distributed pipelines and end‑to‑end search products, and ships Python APIs, services and modern React interfaces.

Northrop Grumman Mission Systems Engineering and Sciences team develops cutting‑edge navigation and integrated avionics software for defense platforms. The Principal/Senior Principal Embedded Software Engineer designs, implements, and integrates safety‑critical embedded code using Model‑Based Engineering, C/C++, Python, and real‑time protocols, collaborating with hardware and systems teams in an Agile environment.

DiDi Autonomous Driving develops Level 4 autonomous driving technology to make transportation safer and more efficient. As a Software Engineer / Sr. Software Engineer, Planning Selection, you will contribute to the core planner engine for decision-making, trajectory generation, and trajectory evaluation.

AgentExchange Search & Personalization team at Salesforce builds AI-powered discovery engines that connect customers with agents, apps, and integrations. The Principal Engineer leads architectural design and delivery of multi-turn GenAI search, personalization services, and contextual discovery across the ecosystem, driving AI-native engineering and platform modernization.

AI Software Platform team at Qualcomm builds the core AI software stack enabling generative AI inference on Snapdragon SoCs. The role leads development of in‑house toolchains, compilers and performance profiling frameworks across Android, Linux, Windows and other OSes, and mentors junior engineers.