Top Senior Level Software Engineer Jobs in Los Angeles, CA

Build and scale Java backend services, recommendation infrastructure, and data-processing pipelines for Taboola’s performance advertising platform. Design reliable microservices, search and event-driven systems handling billions of events and terabytes of data. Own services end to end, including production monitoring, incident response, root-cause analysis, and continuous improvement. Collaborate with product and architecture teams, manage integration projects, mentor engineers, and use AI-assisted development tools.

Build and maintain FloQast’s coded design system and component library using React and TypeScript. Partner with platform and global engineering teams, standardize UI patterns, manage design tokens, documentation, accessibility, visual testing, and versioning. Prototype AI-native interfaces, enable designers and PMs to contribute front-end code, audit legacy UI, and improve performance across complex enterprise SaaS workflows and financial dashboards.

Develops and maintains full-stack client-side, server-side, and desktop software for mission-critical satellite systems. Designs APIs and web services, integrates capabilities across engineering teams, and optimizes applications for scalability, performance, and reliability. Responsibilities include troubleshooting, upgrades, testing, code reviews, documentation, and continuous improvement. The role requires Java experience, software lifecycle leadership, CI/CD expertise, a bachelor's degree, an active U.S. Secret clearance, and onsite work in El Segundo, California.

Build and own a React and three.js real-time 3D rendering layer for browser-based mission software. Render spacecraft, orbits, sensor volumes, live telemetry, and mission data at trusted frame rates. Translate design concepts into polished front-end components and interactions, manage 3D scenes, shaders, lighting, cameras, and level of detail, and prototype visual experiences. Collaborate with data and platform engineers while owning work from prototype through production, including performance and visual quality.

Leads the architecture, development, testing, deployment, monitoring, and optimization of Workday integrations, APIs, automations, and custom applications. Partners with People, Engineering, IT, Analytics, and Product stakeholders to translate business needs into scalable solutions. Provides Workday API and data architecture expertise, troubleshoots complex issues, manages technical delivery, improves reliability, and evaluates emerging technologies including AI-assisted development and agentic workflows.

Own the frontend platform for Relativity Space’s operator UI, including the application shell, design system, shared data layer, and unified platform architecture. Lead consolidation of multiple front ends, support high-rate live telemetry rendering, establish frontend technical direction and quality standards, and mentor engineers. Build performant, data-intensive applications using TypeScript and React, with state management and streaming data architectures.

Develop and customize Guidewire applications supporting insurance policy, billing, and claims functions. Responsibilities include coding, configuration, integrations, testing, troubleshooting, requirements analysis, modernization support, client communication, workstream management, and mentoring junior developers. The role focuses on delivering software solutions across BillingCenter, ClaimCenter, and PolicyCenter while addressing complex technical and business challenges for insurance clients.

Architect and maintain vendor-agnostic automation for multi-vendor EVPN-VXLAN data center and campus networks. Build Network-as-Code data models, SSoT integrations, CI/CD validation workflows, and resilient Python or Go tooling across Arista and Juniper platforms. Integrate AI-assisted engineering workflows, govern automation standards, establish safeguards for generated code, and mentor junior developers. The role also supports telemetry, containerization, and critical mission milestones.

Own the architecture and technical direction of Metropolis Recognition Platform, including edge-to-cloud pipelines, identity resolution, real-time decisioning, privacy and consent models, observability, and progressive delivery. Lead cross-functional alignment across engineering, computer vision, data, security, platform teams, and partners. Establish RFCs, SLOs, testing standards, operational practices, and architectural best practices while mentoring engineers and managing high-scale distributed systems.

Build and operate production software for Crunchyroll’s Concepts Lab, turning validated experiments into reliable products. Embed with delivery teams, design systems, maintain CI/CD and testing, manage production health, improve security and scalability, document services, and lead clean handoffs to long-term owners. Mentor engineers and contractors, contribute to hiring, and establish standards for code quality, observability, cost management, and release safety.