Top Senior Level Software Engineer Jobs in Los Angeles, CA

Build and own a browser-based React and three.js rendering layer for 3D mission data, including spacecraft, orbits, sensor volumes, telemetry, and common operating picture controls. Develop polished front-end interactions, optimize real-time rendering performance, manage 3D scenes, shaders, lighting, cameras, and level of detail, and rapidly prototype visual concepts. Collaborate with data and platform engineers while contributing to data visualization and standard front-end development.

Develop and evolve distributed spacecraft ground-control systems using Elixir and OTP. Own features from design through production, establish fault-tolerant architecture, improve reliability and performance, maintain rigorous testing and code quality, mentor engineers, and collaborate across product, frontend, backend, operations, and astrodynamics teams. The role focuses on resilient, scalable services supporting satellite command and control, mission planning, data processing, and analysis.

Own end-to-end full-stack feature development across React/TypeScript interfaces and Elixir backend services for spacecraft modeling, simulation, and ground-control software. Drive architecture, technical debt reduction, performance, reliability, testing, API design, and production deployment. Mentor engineers, establish coding standards, collaborate with product, design, QA, operators, and astrodynamics teams, and deliver complex data-dense, real-time applications.

Design, implement, test, and maintain real-time satellite payload models and integrate them into system-level simulators. Perform full software lifecycle activities, develop verification plans and test environments, create automation tools, collaborate with cross-functional teams (systems, hardware, flight software), and deliver high-impact solutions in an agile CI/CD environment.

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.

Develop and customize insurance applications on the Guidewire platform (PolicyCenter, BillingCenter, ClaimCenter). Design, code, test solutions using OOP and Guidewire technologies, manage system configurations, mentor junior staff, build client relationships, and apply firm methodologies to deliver high-quality insurance technology solutions.

Lead design, development, modification, and deployment of Duck Creek-based P&C insurance solutions. Manage client accounts and development teams, mentor staff, architect solutions, design UIs, and ensure project success and quality.

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.

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.

Senior Workday Developer responsible for designing, building, testing, and supporting Workday integrations, security, and reporting. Develop Studio, Core Connector, EIB, and web service integrations; create advanced reports and calculated fields; manage security configuration; perform integration troubleshooting, testing, deployment, and tenant migrations; and collaborate with HR, IT, payroll, benefits, and vendors to deliver scalable, maintainable Workday solutions.

Lead a compliance and risk engineering pillar to design, deliver, and operate regulatory automation, AI/ML, and risk-control platforms. Own roadmap, reliability, incident and defect management, stakeholder communication with Legal/Cyber/Compliance, and hiring and growth of software and quality engineering teams across global jurisdictions.

As a Senior Software Engineer, you will design and implement EHR integrations, develop API integrations, mentor junior engineers, and build scalable systems for healthcare interoperability.