Top Senior Level Software Engineer Jobs in Los Angeles, CA

Lead strategy, development, and optimization of corporate web properties. Manage front-end team, contractors, and agencies; drive CRO, SEO, analytics, governance, and global web roadmaps. Translate designs into performant Vue/Nuxt implementations, enforce accessibility/security standards, and collaborate cross-functionally to improve engagement and pipeline.

Design, build, and scale cloud-based backend platform components and connectors for ERPs, banks, payments, tax and subledger systems. Lead architecture, deliver highly available multi-tenant SaaS services (API gateway, event bus, identity, scheduler, search, workflow orchestration), ensure performance, security, extensibility and testability, mentor engineers, drive technical decisions, and support deployments and occasional off-hours support.

Lead Guidewire system implementations and upgrades (Digital Portals), design and deliver Guidewire solutions, manage large projects, engage senior clients, provide strategic input, mentor teams, and ensure operational excellence and client satisfaction.

Design, develop, and support reusable components, interactions, frameworks and SDKs for Spectacles AR glasses and SnapOS. Contribute to OS components, participate in code and design reviews, and collaborate with design, engineering, and product teams to launch performant, test-covered features.

Design, implement, and optimize full‑stack web and mobile applications. Ship scalable, production‑ready features and UI components, improve performance and reliability, contribute to shared libraries, and use AI tools and metrics to inform development.

The Principal Software Engineer will design and implement systems for the advertiser experiences at Snap, lead technical vision, mentor engineers, and innovate on creator marketplace products.

The Senior Software Engineer will design and develop flight and ground software, collaborate with cross-functional teams, and manage the complete software lifecycle.

Design and build core services for Metropolis Web Services, focusing on distributed systems. Collaborate with multiple technical teams and mentor engineers. Architect scalable systems and establish operational standards for high reliability and performance.

Lead the design and development of complex features in high-volume web services, mentor engineers, and collaborate with cross-functional teams.

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.

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.