Top Full-Stack 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.

The Senior Full-Stack Engineer will manage client relationships, design integration solutions, and ensure seamless delivery and optimization of technical workflows, while leveraging AI for efficiency.

Leads software teams developing, integrating, deploying, and maintaining full-stack mission applications for DoD and intelligence customers. Builds prototypes, scales applications, develops responsive frontend features, integrates systems, collaborates with government operators, and conducts deployment and field testing in secure environments. The role requires customer relationship management, technical leadership, software engineering expertise, and active security clearance.

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.

Lead technical strategy and execution for Affirm’s account management team, building secure, scalable fullstack systems and customer account security experiences. Collaborate with product, design, analytics, and engineering teams; establish quality, monitoring, testing, and operational standards; support availability and on-call practices; communicate technical decisions; and mentor engineers.

Leads full-stack software teams developing, integrating, deploying, and maintaining mission-critical applications for DoD and intelligence customers. Builds prototypes and user-focused features, integrates systems and APIs, collaborates with military and government operators, and conducts deployment, field testing, and triage in secure environments. Requires expertise in React, TypeScript, Python, high-performance interfaces, secure software deployment, customer engagement, and national security missions.

Develop and maintain a full-stack web application and platform for fraud analysis. Build APIs and user interfaces, write automated tests, troubleshoot production issues, collaborate with product, design, data science, infrastructure, and solutions engineering teams, and participate in on-call support. Use React, Golang, Python, PostgreSQL, Docker, and AWS technologies to deliver reliable products and meet service-level requirements.

Develop and maintain a fraud-analysis web application and platform. Build APIs and user interfaces, write automated tests, troubleshoot production issues, collaborate with product and cross-functional teams, analyze product metrics, and support SLA compliance through production on-call rotation.

Build and maintain fullstack features for GitLab’s post-purchase subscription lifecycle, including renewals, billing accounts, auto-renewal, overages, reconciliations, and subscription visibility. Partner with Product and Design, integrate billing and customer systems, write reliable tested code, support safe rollouts and monitoring, participate in code reviews and incident response, and reduce technical debt and architectural risk.

Build and maintain scalable backend platforms for capital orchestration, transaction reconciliation, collateral movement, data pipelines, and business workflows. Collaborate with engineers, product managers, designers, analysts, and business stakeholders to design systems, write tested code, improve reliability, and deliver projects incrementally. Support production operations through monitoring, metrics, debugging, code reviews, and on-call responsibilities.

Staff Software Engineer responsible for technical strategy, scalable full-stack systems, team operations, reliability, monitoring, code quality, and talent development. The role involves building customer-facing card experiences and backend services using Python or Kotlin, AWS, MySQL, Spark, Kubernetes, and React-based frameworks. The engineer will own features end to end, collaborate cross-functionally, manage technical risks and trade-offs, support on-call health, and apply AI safely to improve development and customer experiences.

Build and maintain scalable full-stack web applications for Snap’s user-facing products. Develop interfaces and services, optimize performance, contribute to shared libraries, analyze operational and engagement metrics, and use AI-assisted workflows while maintaining code quality, security, scalability, and production readiness.

Develop and maintain satellite command-and-control, mission-planning, mission-data processing, and data-analysis software using Elixir. Collaborate on architecture, design, and code reviews while working across engineering disciplines. The role requires functional programming, resilient and fault-tolerant distributed systems, front-end development, live-system debugging, and strong communication. Preferred experience includes Elixir OTP, React, TypeScript, OAuth2, network protocols, databases, and distributed-system monitoring.

Build and ship custom full-stack programs for AI labs and product teams, including capture flows, task logic, data pipelines, validation, redaction, provenance, and delivery across web, mobile, and backend systems. Partner directly with technical customers to scope ambiguous requirements, determine what to reuse or build, ship production code, establish data quality processes, and turn repeatable custom solutions into core platform capabilities.

Develop reliable full-stack software and applications supporting SpaceX operations, manufacturing, launches, and Starlink. Responsibilities include designing systems, building prototypes, improving application performance, solving user problems, and contributing to architecture, design, and code reviews. The role requires ownership of software engineering and product development, with potential extended hours or weekend work based on launch schedules.

Develop reliable full-stack software and internal applications used across SpaceX. Responsibilities include designing systems, building prototypes, improving operational efficiency, solving user problems, and participating in architecture, design, and code reviews. The role involves owning software engineering and product development, with preferred experience in web applications, databases, distributed data processing, cloud-native tools, testing, deployment, monitoring, and performance optimization. This is an onsite role with occasional extended hours based on launch schedules.

Build and own Nominal’s shared frontend compute and data layer for high-throughput live and historical hardware data. Develop streaming, caching, WebSocket, web worker, and columnar-data capabilities; optimize browser memory, rendering, and runtime performance; and ensure data correctness. Partner with product, design, and backend teams to shape workflows, expose compute features, and simplify complex technical experiences for users monitoring mission-critical systems.

Develop and operate CrowdStrike’s internal cloud management platform and mission-critical CI/CD pipelines. Build APIs and UIs using Go and TypeScript, improve developer productivity, integrate tooling, maintain cloud-native infrastructure, and support secure, highly available software delivery systems. Collaborate with development, infrastructure, security, and SRE teams, ensure SOC2-aware processes, and participate in on-call operations.

Provides technical leadership on complex, high-impact engineering projects from design through launch. The role involves architecture, company-wide initiatives, engineering excellence, mentoring technical leaders, and establishing standards for scalable, reliable, secure, observable systems. The engineer will collaborate across teams, communicate complex technical topics, and apply customer-focused decision-making and A/B testing techniques.

Develop highly reliable full-stack software used across SpaceX, create applications that improve operations, prototype solutions, and own software engineering and product development. Responsibilities include understanding user problems, contributing to architecture and code reviews, optimizing performance, and building systems with modern web, database, deployment, and streaming technologies.

Design, build, and operate secure, reliable full-stack features for an AI-powered financial platform serving local governments. Responsibilities include architecture, security, SOC 2 compliance, monitoring, observability, incident response, continuous delivery, product collaboration, technical planning, mentoring, pairing, and code review. The role requires strong TypeScript, Node.js, React, AI-enabled product, and distributed-systems experience.

Build and improve full-stack software for engineers operating mission-critical hardware. Responsibilities include developing React and TypeScript/JavaScript interfaces, contributing to backend services and APIs, creating reliable data flows, debugging across systems, writing tested code, and collaborating on greenfield products. The intern will work closely with software engineers and operators while gaining experience across frontend, backend, databases, and hardware-connected systems.

Develop and ship phased software projects for Affirm’s mobile card acquisition team. Collaborate with product, design, and analytics stakeholders; build web and mobile applications and scalable APIs; monitor operational metrics; support availability and on-call efforts; participate in code reviews, interviews, and team development.

Leads development and operation of full-stack applications for high-volume telemetry, sensor, and video analysis. Builds data-processing pipelines, engineering interfaces, model inference workflows, and production infrastructure. Responsibilities include performance optimization, testing, CI/CD, observability, incident response, reliability, architecture, and mentoring. Partners with vehicle, propulsion, manufacturing, test, and inspection engineers to deliver tools that identify problems and improve analysis efficiency.

Build and operate full-stack applications for engineering data and video analysis across production, testing, and flight. Responsibilities include developing data-processing platforms, web interfaces, model-enabled anomaly detection workflows, and infrastructure; optimizing queries and large-data performance; implementing testing and CI/CD; managing deployments, monitoring, and capacity; and responding to production incidents. The role partners closely with vehicle, propulsion, manufacturing, and inspection engineers.