Software Engineer Jobs in Long Beach, CA

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.

Designs, verifies, synthesizes, brings up, and validates custom FPGA firmware and DSP pipelines for Relativity Space’s Terran R launch vehicle. Oversees FPGA development across the full product lifecycle, from concept through flight operations, including board bring-up, qualification, production, integration, and debugging. Requires expertise in digital communications, DSP, RTL development, high-speed data converter interfaces, FPGA toolchains, and mission-critical aerospace systems, along with strong cross-functional and project management skills.

Develop and maintain flight software for spacecraft, including RTOS and embedded Linux applications, hardware drivers, unit tests, and hardware-in-the-loop validation. Collaborate with systems and embedded engineers on requirements, participate in code and design reviews, and support on-orbit flight operations. The role also involves technical leadership, mentoring junior developers, and working with customers across spacecraft programs.

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.

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.

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.

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.

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.

Own and architect the frontend platform for a unified, safety-critical operator interface. Lead application shell, design system, shared data layer, frontend consolidation, performance optimization, real-time telemetry rendering, cross-team technical direction, and mentorship. Build data-intensive applications using advanced state management and streaming technologies.

Lead the architecture and technical execution of a next-generation missile-defense ground software program. Own the end-to-end ground segment and real-time command-and-control baseline, including telemetry, alerts, engagement management, decision logic, data pipelines, visualization, and cybersecurity. Guide software teams, oversee simulation and hardware-in-the-loop validation, ensure interoperability and vendor-agnostic integration, collaborate with systems and mission operations teams, and engage government and industry stakeholders.

Develop, test, document, and deploy embedded Linux software and firmware for rocket avionics, network switch, and camera platforms. Responsibilities include hardware and platform bring-up, networking and video integration, debugging across kernels, drivers, hardware, and applications, validation, performance tuning, architecture improvements, and field troubleshooting. The role collaborates with hardware, systems, and platform teams to deliver reliable, high-performance software for safety-critical aerospace systems.

Develop and deploy full-stack applications supporting purchasing, manufacturing planning, scheduling, test-data analysis, and factory operations. Lead the software development lifecycle, collaborate with non-software stakeholders to define requirements, apply agile and continuous delivery practices, solve complex problems, and mentor engineers. The role involves building scalable platforms across front-end, services, analytics, industrial automation, and AI capabilities.

Develop, test, maintain, and support full-stack web applications and backend services using frontend technologies, APIs, microservices, data modeling, and application pipelines. Participate in the full software development lifecycle, code reviews, debugging, incident resolution, and technical discussions. Collaborate with cross-functional teams to build scalable enterprise applications and improve engineering tools and practices.

Develop and evolve distributed spacecraft ground-control systems using Elixir and OTP. Own features from design through production, establish fault-tolerant architecture, improve reliability and performance, maintain rigorous testing and code quality, mentor engineers, and collaborate across product, frontend, backend, operations, and astrodynamics teams. The role focuses on resilient, scalable services supporting satellite command and control, mission planning, data processing, and analysis.

Lead the technical direction of Elixir/OTP distributed systems for a spacecraft ground-control platform. Responsibilities include defining architecture and roadmaps, leading cross-functional initiatives, improving reliability and scalability, establishing testing and engineering standards, managing incidents, influencing product strategy, documenting systems, and mentoring engineers and emerging technical leaders.

Own end-to-end full-stack feature development across React/TypeScript interfaces and Elixir backend services for spacecraft modeling, simulation, and ground-control software. Drive architecture, technical debt reduction, performance, reliability, testing, API design, and production deployment. Mentor engineers, establish coding standards, collaborate with product, design, QA, operators, and astrodynamics teams, and deliver complex data-dense, real-time applications.

Own and architect a space-based storage platform spanning Linux kernel drivers, NVMe recovery, ZFS pool design, NFS serving, and automated fault recovery. Develop radiation-resilient storage systems, reliability models, fault-injection tests, and integration between drivers and filesystems. Prototype on commodity hardware, validate sustained high-throughput operation, and carry the architecture through platform integration and launch.

The Software Engineer II will develop full-stack software solutions for Rocket Lab's Manufacturing Execution System, working with various teams to improve operational efficiency.

Own and evolve Relativity's agentic infrastructure: agents, model routing, context pipelines, inter-agent communication, and supporting services. Deploy and operate local LLM inference across Mac Studio and GPU hardware, manage Linux/macOS systems, Proxmox VMs/containers, multi-site networking, storage and recovery. Build CLIs, dashboards, automation, improve observability and failure recovery, contribute upstream open-source, design security for local compute and package the stack for internal and customer deployments.