Top Senior Level Software Engineer Jobs in Los Angeles, CA

Build and ship end-to-end consumer product features across frontend, backend services, APIs, data pipelines, and production infrastructure. Use AI coding agents, own Kubernetes services, monitoring, on-call responsibilities, performance, privacy, testing, architecture, and technical debt reduction. Instrument features and analyze results in Sigma and Snowflake. Collaborate with product teams, distributed colleagues, partners, and agencies while delivering weekly releases to millions of users.

Develop, test, maintain, and integrate mission software using Java, C++, Python, and ReactJS. Responsibilities include architecture, requirements, algorithms, interfaces, Agile/Scrum participation, code reviews, debugging, software research, process improvement, and compliance with engineering, safety, regulatory, and customer standards. The role collaborates with multidisciplinary teams and supports end-to-end software development for satellite space mission systems.

Leads custom application development, architecture, testing, modernization, and delivery across cloud-native and on-premise environments. Translates business requirements into scalable technical solutions, coordinates software planning and releases, reviews code, applies CI/CD and automated testing, advises clients on technology decisions, coaches engineers, and advances AI-enabled engineering practices.

Designs, develops, tests, modernizes, and maintains custom applications across cloud-native and on-premise environments. Translates business requirements into technical solutions, builds APIs and integrations, applies AI-native engineering practices, supports CI/CD and release activities, and performs debugging and code reviews. Collaborates with clients, contributes to architecture and project planning, estimates complex workstreams, and mentors junior engineers while ensuring high-quality software delivery.

Design, build, and own scalable microservices and secure APIs that transfer value across blockchain and banking protocols. Extend in-house blockchain infrastructure, integrate with banks and cloud services, troubleshoot production issues, document system and testing procedures, and collaborate with product and engineering teams to deliver reliable payment experiences.

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.

Own the frontend platform powering Relativity Space’s operator UI, including the application shell, design system, shared data layer, and modular architecture. Lead consolidation of multiple frontends, support high-rate hardware telemetry rendering, establish frontend technical standards, and mentor engineers. The role requires deep TypeScript and React expertise, performance optimization for data-intensive applications, scalable state management, and cross-team architectural leadership.

Lead a highly technical backend engineering team building scalable SaaS systems and AI-powered accounting automation. Responsibilities include mentoring senior engineers and tech leads, resolving complex technical issues, guiding architecture and system design, reviewing code, operating distributed production systems, and driving AI-assisted software development using tools such as Cursor and Claude Code.

Own and define Dubsado’s data infrastructure strategy, including pipelines, warehouse reliability, analytical modeling, data quality, observability, and tooling standards. Build scalable data systems, collaborate with engineering, product, and business teams, and support AI agents, customer-facing features, and internal users. Serve as the initial dedicated data specialist, operating autonomously while gradually distributing data quality ownership across engineering.

Develop and support C++ features for Lens Engine and Lens Studio, enabling augmented reality experiences across Snapchat and Specs. Contribute to agentic development tooling, architecture, technical roadmaps, code reviews, and cross-functional engineering efforts. Improve code quality, reliability, performance, testing, maintainability, and developer productivity while integrating AI-assisted workflows and systems.

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.