Top Senior Level Software Engineer Jobs in Los Angeles, CA

Lead full-stack development on AWS for complex, distributed systems. Design architectures, translate customer requirements, drive agile lifecycle activities, mentor teams, ensure software quality, implement infrastructure tooling, and support system integration and maintenance.

The Principal Software Engineer will design automated ad serving systems, lead technical direction, collaborate with teams, and mentor engineers.

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.

Lead and grow a software engineering team owning delivery, quality, and operational health. Provide technical oversight for architecture and code quality, drive planning and execution cadence, adopt AI-assisted development tooling, recruit and onboard engineers, remove blockers and manage cross-team dependencies, and partner with product and design to deliver high-impact work.

Design and develop backend systems, optimize performance, manage APIs, and lead integration efforts in healthcare software.

Design and implement scalable microservices and customer/internal APIs. Lead technical specification, development, integration, testing, and release. Optimize performance, refactor code, collaborate with stakeholders, mentor engineers, and ensure reliable, maintainable solutions across the platform.

Lead a product-facing engineering team focused on acquisition and conversion. Set priorities and metrics, partner with cross-functional teams, drive experimentation and funnel optimization, hire and coach engineers, ensure secure, reliable, and scalable systems, and balance speed with long-term technical health and team sustainability.

As a Video Engineer at Whatnot, you'll enhance the platform's video services, develop seller tools, and implement innovative video strategies to improve user engagement and experience.

As a Software Integration Engineer, you'll develop and integrate complex software systems for space operations, drive technical excellence, and mentor engineers.

Design, build, and maintain scalable backend services in Java/Scala integrating hardware and ML. Implement gRPC APIs, use Redis/MySQL/PostgreSQL, deploy microservices on Kubernetes, and build event-driven pipelines with Kafka. Collaborate with hardware, ML, and operations teams to optimize performance, reliability, and scalability.