Software Engineer Jobs in Long Beach, CA

Develop and maintain physics-based space and missile defense models, engagement and mission simulations, and analysis tools using Python and C++. Integrate simulations into SIL, HIL, and distributed environments; perform verification, validation, Monte Carlo studies, and data correlation. Collaborate with engineering and government stakeholders on requirements, testing, and technical recommendations. The role requires aerospace or related experience, knowledge of orbital mechanics or missile trajectories, and eligibility for Secret or TS/SCI clearance.

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.

Build and operate full-stack software for the company’s digital thread, including services, APIs, data models, user interfaces, integrations, data migrations, and workflow automation. Write tests, participate in code reviews, monitor production systems, resolve data and user issues, and document technical work. Engineers will progressively own larger features while learning product-data systems and supporting aerospace engineering operations.

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.

Develop high-fidelity spacecraft simulation software in modern C++ and Python. Build multi-physics models covering spacecraft dynamics, thermal systems, attitude control, propulsion, power, sensors, and actuators. Implement solver architectures and time-stepping algorithms for real-time and faster-than-real-time simulation, maintain multi-language APIs, collaborate with engineering teams, and participate in code reviews and planning.

Develop and test flight software for spacecraft computers, integrate GNC algorithms, maintain command telemetry databases, and build simulators, device drivers, and communications libraries. The role includes spacecraft command scripting, ground-software collaboration, code reviews, and flight-software architecture work. Candidates need low-level firmware and safety-critical systems experience, embedded RTOS knowledge, C/C++ proficiency, and familiarity with hardware and networking protocols. This is an onsite position near Denver or Long Beach and requires the ability to maintain or obtain TS/SCI clearance.

Develop and test low-level flight software for spacecraft computers, integrate GNC algorithms, maintain command and telemetry databases, support spacecraft command sequencing, build subsystem simulators, and create device drivers and communications libraries. The role requires embedded RTOS, safety-critical systems, hardware protocols, C/C++, Python, and eligibility for TS/SCI clearance. This is an onsite position near Denver or Long Beach.

Own the architecture and technical direction of spacecraft flight software, leading safety-critical embedded development, GNC integration, device drivers, communications libraries, simulation environments, and command telemetry systems. Establish engineering standards, guide verification and validation, support ground-system interfaces, and provide technical leadership across design reviews and multidisciplinary programs. The role requires deep real-time embedded, firmware, and low-level software expertise for delivered space or safety-critical missions.

Develop and test flight software for spacecraft, including onboard computers, GNC algorithm integration, command and telemetry systems, spacecraft sequencing, subsystem simulators, device drivers, and communications libraries. Collaborate with ground software teams across spacecraft design, manufacturing, integration, and flight operations. The role requires low-level firmware, embedded RTOS, safety-critical systems, C/C++, Python, and eligibility for TS/SCI clearance.

Leads flight software design, development, integration, testing, and architecture for spacecraft computers. Responsibilities include integrating GNC algorithms, maintaining command and telemetry databases, developing simulators, device drivers, communication libraries, and command sequencing, while collaborating with ground software teams, conducting code reviews, mentoring engineers, and supporting technical trade studies.

Build and maintain frontend platform capabilities for a unified rocket-factory operator UI. Develop React and TypeScript modules, shared components, design-system integrations, and real-time telemetry interfaces. Migrate features from separate frontends, optimize live-data rendering performance, contribute to code reviews, and collaborate with senior engineers on architecture. The role supports industrial automation and launch operations software.

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.

Design and build full-stack web applications, backend APIs, data models, pipelines, developer tooling, and platforms for mission and flight software systems. Develop interfaces with flight software and simulations, support test automation and continuous deployment, and establish scalable engineering practices for a growing software organization.

Build full-stack applications supporting rocket design and manufacturing operations. Develop responsive front ends, scalable back ends, data pipelines, telemetry analysis tools, production planning systems, and real-time dashboards. Participate in the full software development lifecycle, including requirements gathering, design, implementation, testing, deployment, and iterative improvement. Collaborate with design, manufacturing, supply chain, test, and factory-floor teams while following agile, continuous integration, and continuous deployment practices.

Build full-stack applications supporting rocket design and manufacturing operations. Responsibilities include developing responsive front ends, scalable back ends, data pipelines, telemetry analysis tools, production planning and supply chain applications, and real-time manufacturing dashboards. The role covers the full software development lifecycle, including requirements gathering, design, implementation, testing, deployment, continuous integration, and iterative improvement with engineers and factory operators.

Designs and maintains Python-based automated test systems for flight-critical avionics hardware. Responsibilities include integrating instrumentation and data acquisition equipment, managing test software through qualification and acceptance, troubleshooting anomalies, performing root cause analysis, documenting systems, enhancing automation frameworks, conducting code reviews, and collaborating with hardware, avionics, and test engineering teams. The role supports human-rated space station systems and may require evening or weekend work during mission milestones.

Develops and verifies vehicle management flight software for aerospace and autonomy platforms. Responsibilities include translating requirements into software designs, integrating functions, building simulation and hardware-in-the-loop environments, creating automated test frameworks, executing manual and automated V&V activities, supporting CI/CD, investigating defects, maintaining technical documentation, and coordinating verification across multifunctional teams. The role is fully onsite and requires an active U.S. Top Secret clearance, U.S. citizenship, and up to 10% travel.

Build and operate full-stack applications, APIs, integrations, and event-driven data flows supporting product, manufacturing, and operations data. Model traceable domain records, lead projects from design through delivery, migrate systems, and implement observability and data-quality controls. Collaborate with engineering, supply chain, and manufacturing users, mentor engineers, contribute to technical designs, and participate in production support and incident response.

Build and lead development of full-stack digital engineering software serving as systems of record for product, manufacturing, and operations data. Design domain models, APIs, integrations, event-driven workflows, migrations, and production infrastructure with strong traceability, observability, security, and auditability. Mentor engineers, set technical direction, collaborate with engineering and manufacturing users, and support reliable software operations in an aerospace and national security environment.

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.

Own the architecture and stability of a shared core 3D CAD engine supporting multiple customer-specific products. Translate product requirements into scalable architecture, guide agentic software development, review AI-generated work, and lead customer-facing product engineering and enhancements. Collaborate across human and agent teams while maintaining mission-critical capabilities and supporting agentically generated designs.

Develop and enhance high-fidelity, multi-physics spacecraft simulation software covering dynamics, thermal systems, propulsion, power, sensors, and actuators. Design performant C++ and Python APIs, numerical solvers, integration schemes, and coupled-physics algorithms. Lead architectural decisions, verification and validation, documentation, code reviews, technical planning, and mentoring while collaborating with mission planning, GNC, and systems engineering teams.

Develops secure, scalable full-stack software for satellite ground communications and data transport. Responsibilities include building Python backend services and APIs, TypeScript front-end applications, microservices, cloud platforms, authentication systems, databases, and containerized deployments. The role translates requirements into technical designs, collaborates with MBSE and test teams, supports integrations, resolves production issues, and ensures reliable, compliant mission-critical performance.

Develops full-stack software for secure satellite communications and ground systems. Responsibilities include building Python backend services and PostgreSQL databases, implementing microservices and OAuth/JWT security, supporting TypeScript frontend development, and deploying containerized applications with Docker, Kubernetes, and Helm. The role also involves Agile collaboration, code reviews, production troubleshooting, integration support, and work with MBSE and test engineering teams.