Top Software Engineer Jobs in Los Angeles, CA

The Staff Software Engineer will lead initiatives in Network Expansion, managing cross-team projects, influencing technical direction, and driving real-world outcomes. This role requires strong collaboration with product and design teams, and the ability to adapt to high-ambiguity situations, focusing on customer-centric applications.

The role involves being an expert in Powder Bed Fusion processes for creating reusable rocket components, leading material qualifications, and improving manufacturing processes while collaborating with cross-functional teams.

Lead the propulsion development team at Relativity Space, managing engine system development, mentoring engineers, and optimizing requirements for rocket engines while ensuring team growth and project completion.

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.

The GNC Engineer II will develop GNC systems, algorithms, and software for spacecraft, focusing on testing, validation, and integration with other systems.

As an Engineer II for Backend APIs, you'll design, develop, and test APIs for the Reporting & Insights team, collaborating closely with product and engineering teams. Your role involves ensuring high code quality, ownership of services in production, and leveraging AI tools in development.

Work with engineering to build APIs, backend services, and distributed event-driven applications supporting analytics and ML. Help design, build, and operate cloud-based systems, data pipelines, and scalable platform capabilities while collaborating with data teams.

Design and build next-generation ads formats, backend infrastructure, and scalable distributed systems. Lead technical direction, collaborate across teams to define product requirements, experiment, analyze and optimize ad performance, and ensure availability, scalability, operational excellence, and cost management. Mentor engineers and apply AI tools and high-velocity workflows to deliver production-ready systems.

Design, implement, and operate scalable ads delivery backend services. Own serving-time systems, collaborate with Product/ML/Infra, ensure availability and efficiency, use observability and automation, and apply AI-assisted workflows to ship production-quality code and optimize platform architecture.

Lead development of satellite ground real-time software as technical lead: design, code, test, review, mentor engineers, collaborate across integrated product teams, and guide software standards and lifecycle practices for defense satellite systems.

Support design, development, testing, and maintenance of mission software for satellite systems. Implement, debug, and optimize code (Java, C++, Python, ReactJS), participate in Agile ceremonies, conduct code reviews, document R&D work, and follow software standards and SDLC practices.

Lead and manage software engineering teams: run agile processes, design and ship secure scalable APIs and services, guide architecture, manage technical debt, recruit and mentor engineers, and align work with company objectives.

Lead the Discovery Platform team, overseeing the development of scalable, high-performance systems for retrieval and ranking to enhance the user experience in Whatnot's live social marketplace.

Build and scale full‑stack product features and systems across frontend and backend. Own projects end‑to‑end from design through rollout and maintenance. Improve reliability, performance, observability, and scalability. Collaborate with Product and Design, mentor teammates, contribute to architecture and design reviews, and leverage AI tools to accelerate development while maintaining engineering judgment.