Top Full-Stack Engineer Jobs in Los Angeles, CA

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 design and delivery of full-stack basketball scoring, statistics, and postgame features. Build scalable backend services and APIs with TypeScript and Node.js, develop React web experiences, support iOS and Android products, and make architectural decisions. Collaborate across product, design, and engineering teams, ensure code quality and system reliability, mentor peers, and contribute to technical standards and tools.

Leads architecture, development, and maintenance of scalable full-stack public health surveillance applications. Responsibilities include Java and React development, APIs and HL7/FHIR integrations, DIBBS workflows, record linking and deduplication, CDC reporting pipelines, testing, CI/CD, DevSecOps, technical direction, code review, mentoring, and stakeholder collaboration.

Lead the architecture and delivery of GitLab’s data products, including near-real-time data ingestion, knowledge graph integrations, data marketplaces, observability, and data-sharing APIs. Translate ambiguous 0-to-1 initiatives into roadmaps, resolve cross-team dependencies, ensure operational readiness across deployment surfaces, and mentor engineers. The role requires deep full-stack expertise, technical leadership, and experience with AI-powered orchestration and multi-tenant SaaS systems.

Build full-stack applications supporting rocket design and manufacturing operations. Develop responsive front ends, scalable back ends, data pipelines, telemetry analysis tools, production planning systems, and real-time dashboards. Participate in the full software development lifecycle, including requirements gathering, design, implementation, testing, deployment, and iterative improvement. Collaborate with design, manufacturing, supply chain, test, and factory-floor teams while following agile, continuous integration, and continuous deployment practices.

Build full-stack applications supporting rocket design and manufacturing operations. Responsibilities include developing responsive front ends, scalable back ends, data pipelines, telemetry analysis tools, production planning and supply chain applications, and real-time manufacturing dashboards. The role covers the full software development lifecycle, including requirements gathering, design, implementation, testing, deployment, continuous integration, and iterative improvement with engineers and factory operators.

Develop and support software, automation tools, dashboards, and alarms for cloud infrastructure, cost attribution, and cloud efficiency. Collaborate with cross-functional teams and senior engineers to design reliable systems, APIs, databases, tests, and AI agents. Contribute to architecture and automation strategies while maintaining strong security, communication, and delivery practices.

Build backend-focused Java/Kotlin APIs and data-driven product features, while contributing to React dashboards and workflows. Design scalable systems, participate in architecture and code reviews, troubleshoot production issues using observability tools, and collaborate with data, reporting, design, and product teams to launch emerging products.

Develop fullstack web applications, enhance platform performance, collaborate on high-impact opportunities, and ensure stable, scalable solutions. Engage in rapid iterations and be a committed team player.

Develop and deploy customer-focused web, mobile, and backend applications across the full software stack. Design major features, contribute to architecture decisions, conduct code reviews, and ensure secure, high-quality implementations. Collaborate with stakeholders and cross-functional teams using Agile and SDLC practices. Manage version control, CI/CD, environments, and releases; maintain automated test coverage and perform root-cause analysis. Build and optimize relational data solutions using SQL Server, including complex queries, stored procedures, and performance tuning.

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.

Build and maintain scalable e-commerce and marketplace features across Node.js, React, MySQL, and MongoDB. Own complex features end to end, design backend services and APIs, integrate PunchOut procurement systems, improve platform security and reliability, conduct code reviews, and mentor engineers. The role requires strong full-stack JavaScript and TypeScript expertise, e-commerce domain experience, and the ability to work autonomously on high-volume transactional software.

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.

Lead technical efforts to build and maintain applications, mentor engineers, manage complex projects, and improve technology quality in healthcare.

Build and scale fullstack Growth Platform systems, including self-service marketing tools, experimentation infrastructure, and customer and event-data integrations. Develop frontend and backend features, design and consume APIs, ensure scalability and maintainability, and collaborate with marketers, analysts, lifecycle teams, product managers, and engineers. Contribute to technical design, code reviews, testing, and process improvements while supporting attribution, data activation, and customer engagement.

Develop and own reliable full-stack software applications used across SpaceX, including manufacturing, launch, flight, satellite-network, and customer-facing systems. Responsibilities include designing architectures, building prototypes, improving performance, testing, deploying, monitoring, and collaborating on technical decisions. The role requires onsite work and may involve extended hours or weekends based on launch schedules.

Lead the architecture, development, and maintenance of Digital Asset Management and creative tooling for game development teams. Build scalable software, support AI-assisted engineering tools and AI/ML workloads, guide multi-year technical initiatives, establish engineering standards, and collaborate with artists, designers, infrastructure, QA, and game developers. Provide technical leadership, documentation, training, and cross-functional guidance while delivering tools for large codebases and shipped products.

Build and own CRM features and workflow automations supporting sales, marketing, onboarding, and support. Develop full-stack functionality using Next.js, FastAPI, Inngest, and related technologies; partner with teams to automate workflows; create agentic solutions for enrichment and task automation; and manage features from planning through monitoring and refinement. The role requires strong web development expertise, product sense, autonomy, communication, and experience with modern JavaScript or TypeScript frameworks and orchestration tools.

Design, develop, integrate, test, deploy, and support full-stack enterprise applications using Java, React, microservices, APIs, messaging systems, and cloud infrastructure. Build secure, high-performing solutions and automated CI/CD, unit, integration, and performance-testing pipelines. Integrate third-party and on-premises applications, provide technical guidance, troubleshoot cloud and on-premises systems, and collaborate with technology, product, and business teams.

Lead the Technical Marketing Engineering team to shape self-driving networks, creating compelling messages and strategies that accelerate product adoption and influence customer engagement.

Develop and deploy full-stack applications supporting purchasing, manufacturing planning, scheduling, test-data analysis, and factory operations. Lead the software development lifecycle, collaborate with non-software stakeholders to define requirements, apply agile and continuous delivery practices, solve complex problems, and mentor engineers. The role involves building scalable platforms across front-end, services, analytics, industrial automation, and AI capabilities.

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, develop, deploy, and integrate front-end and back-end web applications. Write clean, documented code, participate in code reviews, resolve technical issues, apply web security best practices, and collaborate with development teams while staying current with emerging technologies.

Design, build, and maintain production-grade .NET web applications and APIs on Azure. Own full-stack delivery from data models and SQL to front-end components, CI/CD, testing, and architecture. Collaborate with product and delivery teams, participate in code reviews, and ensure secure, observable, well-tested services.

Build and scale a fintech platform across accounting, tax, and banking. Own feature lifecycle from design to deployment, write backend and frontend code, improve infrastructure and reliability, and collaborate with product and design to deliver customer-focused features.