Top Software Engineer Jobs in Los Angeles, CA

Leads the technical vision, architecture, and development of a high-fidelity spacecraft simulation platform. Designs multi-physics models, numerical solvers, APIs, and scalable real-time or batch simulation infrastructure using C++ and Python. Establishes verification and validation practices, engineering standards, and software quality expectations. Partners with GNC, mission planning, autonomy, and systems engineering teams while mentoring engineers and guiding cross-functional technical direction.

Build and own integrations between Axle Health and EHR/EMR systems, including legacy platforms with inconsistent APIs. Scope projects, make technical decisions, manage timelines, resolve customer issues, coordinate with vendors, and provide production support. Develop scalable, secure backend services, monitoring, resilience, documentation, and high-quality code for high-volume healthcare data systems.

Leads the engineering team building Circle’s customer onboarding and lifecycle management platform. Responsibilities include developing scalable onboarding automation, customer lifecycle capabilities, partner-facing APIs and SDKs, compliance tools, and product-specific verification workflows. The role owns architecture, reliability, security, operational excellence, cross-functional delivery, hiring, coaching, and development of senior and staff engineers across risk, compliance, fraud, product, and engineering teams.

Build and lead real-time 3D augmented reality applications for Spectacles and Snap OS. Responsibilities include designing spatial interactions, integrating system services and platform APIs, optimizing applications for resource-constrained AR hardware, making architectural decisions, defining technical direction, collaborating cross-functionally, and mentoring engineers.

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, tests, maintains, and debugs mission software for Boeing’s satellite space mission systems using Java, C++, Python, and ReactJS. Participates in the full software development lifecycle, Agile/Scrum activities, code reviews, systems integration, customer meetings, software research, and process improvement. The role is fully onsite in El Segundo, California, requires U.S. citizenship and eligibility for an interim and final Secret clearance, and includes less than 10% travel.

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, document, test, and support Parsec’s TrakSYS manufacturing execution software platform. Responsibilities include designing features, writing maintainable code, preparing technical specifications, conducting code reviews, troubleshooting application issues, and collaborating across teams. The role requires Microsoft .NET, SQL Server, web development, Windows, SDLC tools, and cloud experience, with preferred knowledge of TypeScript, Bootstrap, unit testing, and manufacturing automation.

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.