Software Engineer Jobs in Long Beach, CA

Designs, develops, tests, integrates, debugs, and maintains non-embedded software for classified defense programs. Translates customer requirements into software architectures, interfaces, algorithms, and designs; supports system integration and lifecycle processes. The role also handles technical issues, improves development processes and metrics, conducts software research, and ensures compliance with quality, safety, regulatory, and customer standards. Work involves Java, ReactJS, DevOps tools, Agile methodologies, and classified-program environments.

Design, build, test, and operate mission operations software for the Mars 2028 spacecraft, including command generation, validation, sequencing, telemetry processing, data dissemination, interfaces, visualization, and data pipelines. Develop automated testing and validation frameworks, support simulation and hardware-in-the-loop testing, document external APIs and data formats, and collaborate with mission operations, flight software, instrument teams, and external partners. Shift work and on-call availability are required during critical mission phases.

Develop and maintain distributed spacecraft ground control software in Elixir, including satellite command and control, mission planning, mission data processing, and data analysis systems. Participate in architecture, design, and code reviews while collaborating across engineering disciplines. The role involves solving greenfield problems involving resilient, fault-tolerant, concurrent, and real-time distributed systems.

Develops, tests, maintains, and optimizes non-embedded Java and React software for classified defense programs. Responsibilities include translating customer requirements into designs, developing architectures and integrations, debugging issues, supporting users, improving software processes, and conducting research and development. The role uses Agile methodologies, DevOps tools, CI/CD pipelines, Linux and Windows environments, and AWS, while maintaining compliance with software quality, safety, security, and regulatory standards.

Design, implement, and maintain APIs, backend services, and front-end interfaces for mission planning and satellite/ground systems. Lead feature development across the full lifecycle in an Agile DevSecOps environment, emphasizing automation, testing, security, performance, and code quality. Support integration, CI/CD pipelines, and geospatial visualization for defense communications systems.

Develop and maintain telemetry and command database schemas, data models, APIs, services, pipelines, and database-backed applications for spacecraft and flight-test systems. Translate engineering requirements into reliable data solutions, implement automated validation and testing, optimize database performance, troubleshoot data pipelines, support CI/CD and migrations, and collaborate with systems, flight software, test, database, and mission operations teams.

Develops and integrates vehicle management software for aerospace and autonomy platforms. Creates verification strategies, test plans, simulators, hardware-in-the-loop environments, automated test frameworks, and CI/CD pipelines. Executes manual and automated testing, investigates defects, documents results, and supports software quality, compliance, and cross-functional test delivery. The role requires close collaboration with systems, flight software, integration, and mission operations teams.

Designs, develops, tests, and deploys safety-critical flight software for Relativity Space’s Terran R rocket. Responsibilities include architecting real-time systems, integrating guidance and control algorithms, processing vehicle sensor data, controlling equipment, developing telemetry infrastructure, supporting hardware and physics simulations, establishing engineering best practices, and mentoring junior engineers.

Contribute to full-stack features for spacecraft mission control and distributed ground control systems. Build React/TypeScript frontends and Elixir backend services, write maintainable and testable code, collaborate with operators, designers, and engineering specialists, and participate in design and code reviews. The role involves smaller, well-defined tasks under senior guidance during a three-month temporary engagement with potential conversion.

Develop hybrid computer-vision and deep-learning perception systems for autonomous spacecraft. Responsibilities include multi-object tracking, neural-network detection and classification, coordinate transformations, image processing, synthetic-data generation, edge deployment, and software-, processor-, and hardware-in-the-loop validation. The role involves implementing Kalman filters, training PyTorch models, writing C++ flight code, and optimizing algorithms for space-qualified processors. This is a three-month temporary engagement with potential conversion to regular employment.

Develop and test flight software for spacecraft computers, integrate GNC algorithms, maintain command telemetry databases, support command scripting, build subsystem simulators, and create device drivers and communications libraries. The role involves embedded RTOS development, hardware integration, mission testing, and collaboration with ground-control software teams. This is a three-month onsite temporary engagement in Denver or Long Beach, with potential conversion to regular employment.

Develop and maintain modern C++ spacecraft simulation software and multi-physics libraries. Model spacecraft dynamics, thermal systems, attitude control, propulsion, power, sensors, and actuators; implement numerical solvers and time-stepping algorithms; maintain Python and C++ APIs; and collaborate on mission planning, algorithm development, testing, code reviews, and sprint planning.

Analyze manufacturing and spacecraft telemetry to identify anomalies, test failures, and degradation patterns. Build predictive models, SQL queries, operational dashboards, statistical process controls, and visualizations using Python and related tools. Document reproducible analyses in Jupyter notebooks and communicate findings to engineering, manufacturing, and mission operations teams. This is a three-month temporary, potentially convertible role supporting hardware production and spacecraft operations.

As a Principal Flight Software Engineer, you will lead the architecture and development of flight software for space missions, ensuring safety and reliability while collaborating on technical decisions and standards.

As a Staff Flight Software Engineer, you will assist in the software development cycle, integrate GNC algorithms, maintain command telemetry databases, and develop reusable driver libraries for flight hardware.

Execute manual and automated full-stack software tests, document defects in Jira, participate in Agile ceremonies, collaborate with developers and product teams, and maintain manual and automated Playwright test scripts. The role contributes to QA standards and testing processes while developing automation skills. This is a three-month temporary engagement with potential conversion to regular employment.

As a Senior Flight Software Engineer, you will develop software for spacecraft systems, integrating algorithms, and maintaining databases essential for space missions. You'll work through design to flight implementation, collaborating on software and hardware simulations.

Build and deploy AI-powered applications and agents for engineers and operators across the rocket manufacturing organization. Responsibilities include full-lifecycle software development, foundation-model integration, retrieval and vector search, evaluation, reliability, testing, continuous integration and deployment, and collaboration with users to define and iterate on solutions. The role uses modern AI, data, cloud, and platform technologies in manufacturing and physical-world environments.

Build and deploy AI-powered applications and agents used by engineers and operators. Responsibilities include full-cycle software development, foundation model integration, retrieval and tool use, evaluation, reliability, continuous delivery, and collaboration with non-software stakeholders. The role involves shipping production-quality systems across cloud and on-premise infrastructure while iterating on solutions for rocket manufacturing and launch operations.

Leads the complete lifecycle of embedded real-time avionics software, including architecture, requirements traceability, coding, code reviews, hardware integration, debugging, testing, and maintenance. Oversees safety-critical software development, automated test strategies, cybersecurity resilience, supplier performance, regulatory compliance, and project management. Provides technical consultation on hardware/software integration and drives developer productivity and DevSecOps adoption.

As a Senior Flight Software Engineer, you'll design and implement flight software for deep-space missions, ensuring integration with spacecraft hardware and supporting verification processes for mission success.

The Staff Flight Software Engineer will design and develop flight-critical software for spacecraft, ensuring integration and operational success. Responsibilities include full lifecycle software development, collaboration with various teams, and support for testing and mission simulations.

Develop and test embedded flight software for spacecraft using RTOS and embedded Linux. Responsibilities include writing hardware drivers, unit testing within continuous integration, hardware-in-the-loop validation, requirements development, code reviews, design reviews, and supporting on-orbit flight operations. The role requires C and C++, embedded software experience, and a Secret clearance or ability to obtain one.

Lead design, architecture, and implementation of APIs, front-end interfaces, and backend services for satellite and ground systems. Guide Agile/DevSecOps development, CI/CD, automated testing, and security practices; lead code reviews, mentor team members, and own features through full lifecycle to deployment.

Develop and maintain software requirements, architecture, algorithms, interfaces, APIs, backend services, and user interfaces for SATCOM mission-planning systems. Work throughout the Agile and DevSecOps lifecycle, including design, coding, integration, testing, deployment, code reviews, automation, security, and performance improvements. Support CI/CD pipelines, Kubernetes optimization, databases, geospatial visualization, and software for space systems and ground segments.