Top Full-Stack Engineer Jobs in Los Angeles, CA

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.

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.

Develop and scale full-stack web applications for Toast’s digital storefront, including online ordering and website products. Design solutions, improve performance and usability, collaborate with Product and Design, run experiments, resolve critical issues, and contribute to API design, testing, and cross-team product integration.

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 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.

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.

Develop and launch scalable full-stack search systems using JavaScript, TypeScript, Python, or Kotlin. Collaborate with engineers and stakeholders, balance delivery speed with system reliability, debug code, participate in code reviews, write tested and extensible software, and contribute to team growth and communication.

Develop and maintain secure, production-grade full-stack .NET applications across Azure, desktop, and mobile environments. Lead implementation decisions, establish coding and security standards, manage vendor deliverables, conduct code reviews, and collaborate with SQA on automated and manual testing. Build responsive Vue.js interfaces, integrate back-end services, maintain CI/CD pipelines, mentor developers, and reduce technical debt through architecture and design-pattern adherence.

Leads the development, modernization, integration, support, and enhancement of business applications. Responsibilities include full-stack software engineering, RESTful API development, relational database design, business intelligence reporting, application migrations, containerization, CI/CD, and Agile delivery coordination. The role also facilitates Agile ceremonies, manages competing priorities, supports COTS systems, performs troubleshooting, conducts code reviews, and communicates progress and delivery metrics to technical teams and business stakeholders.

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.

Build and maintain scalable full-stack web applications and systems for Snap products. Develop user interfaces, optimize performance and browser rendering, contribute to shared libraries, analyze operational metrics, and deliver secure, production-ready code. The role requires strong front-end and back-end development skills, testing knowledge, distributed systems experience, and the ability to use AI tools responsibly in engineering workflows.

Lead development of enterprise-grade web applications and distributed systems using Java, Spring Boot, React, microservices, SQL, and cloud platforms. Responsibilities include architecture and system design, production-quality coding, REST API development, cloud deployment, CI/CD, troubleshooting, observability, and operational support. The role collaborates with product, architecture, DevOps, and engineering teams in an Agile environment. Preferred experience includes event-driven architectures, Kafka or RabbitMQ, Docker, Kubernetes, and distributed systems patterns.

Own the end-to-end architecture, development, delivery, and support of a mobile-first event and stakeholder communication platform. Build scalable multi-venue capabilities, enhanced access controls, low-latency offline and mesh networking, and enterprise integrations. Partner with business development on technical discovery, sales demonstrations, privacy and architecture discussions, and pilot deployments. Select cost-effective tooling, collaborate through peer programming, leverage AI development tools, and establish reliable architectural patterns for rapid product growth.

Lead development of enterprise-grade .NET web applications and distributed systems across the full engineering lifecycle. Responsibilities include architecture, hands-on C# and .NET implementation, scalable API and front-end development, code reviews, cloud deployment, debugging, performance optimization, security, observability, and post-release support. The role uses Azure or AWS and may involve microservices, containers, automated testing, and DevOps pipeline management.

Build and launch scalable fullstack web applications and APIs for Affirm’s Ads Platform. Collaborate with product, design, analytics, and engineering partners to break projects into deliverable phases, make technical trade-offs, write tested and extensible code, monitor service metrics, support on-call operations, review code, and participate in team development and interviews.

Build and ship full-stack web and mobile experiences across Affirm’s consumer products. Break down projects, collaborate with product, design, and analytics teams, develop scalable APIs, write well-tested code, monitor service health, participate in on-call support, review code, and contribute to engineering growth and interviewing.

Lead full-stack engineering for a real-time maritime autonomy data platform: build scalable, secure pipelines and cloud/edge systems, collaborate with hardware and AI teams, mentor engineers, drive technical decisions, and deliver user-facing interfaces.

Design, build, and scale backend systems, APIs, and frontend applications. Collaborate with product, design, and AI teams to ship full features, write well-tested code, mentor junior engineers, and contribute to architecture and technical strategy.

Build and ship full-stack sourcing products with a backend focus, including domain models, APIs, event-driven services, data systems, and ERP integrations. Collaborate with product, design, frontend, and QA teams; review AI-generated code; ensure system quality, type safety, and reliable testing; adapt across product areas; document decisions; and mentor engineers.

Build and operate full-stack healthcare products across frontend, backend, event-driven workflows, data services, integrations, and AI-powered features. Partner with Product and clinical, sales, and operations stakeholders to define problems, ship solutions, measure outcomes, and iterate. Own system design, reliability, security, observability, testing, incident response, and production quality, particularly for patient data, clinical logic, billing, and LLM functionality.

Leads technical direction for a product engineering pod while remaining hands-on across frontend and backend development. Responsibilities include architecture, system design, AI-powered features, AI coding-agent practices, reliability, security, observability, integrations, incident response, roadmap prioritization, and mentoring. The role partners with product, clinical, sales, and operations stakeholders to deliver healthcare software handling protected health information.