Top Full-Stack Engineer Jobs in Los Angeles, CA

As a Full-Stack Engineer at Clerkie, you will develop and maintain a B2B CRM, optimizing performance across the tech stack and collaborating with various teams to ensure a seamless user experience.

As a Fullstack Engineer, you'll design, build, and operate web applications, collaborating with product teams and mentoring peers while ensuring best practices in coding and system architecture.

Lead design, build, and deploy full-stack software for DoD/IC missions. Rapidly prototype MVPs, integrate systems and APIs, deliver high-performance frontends, collaborate with users, and deploy/test in secure operational environments.

Drive feature development and architectural decisions across frontend and backend systems, mentor junior engineers, identify tech debt, and collaborate across departments.

Lead and deliver software solutions, oversee full-stack architecture, mentor engineers, and drive cross-functional initiatives for spacecraft modeling and control platforms.

Develop cross-platform mobile applications using React Native, maintain RESTful APIs with Node.js, and manage database optimization with PostgreSQL.

The Full-Stack Engineer will develop web applications using Next.js, TypeScript, and Supabase, focusing on security, performance, and user experience. Responsibilities include building responsive UIs, designing APIs, and implementing real-time functionality while ensuring best coding practices and HIPAA compliance.

Build and iterate full-stack applications and services for an automated rocket factory platform. Develop tools for planning, scheduling, data analysis, and operations; collaborate with stakeholders, follow agile practices, ship CI/CD software, and mentor engineers.

Seeking a full stack engineer to develop applications, requiring skills in Node.js, SQL, and modern JavaScript frameworks with a focus on scalability and performance.

The Full Stack Engineer will develop and maintain the software for Sans, focusing on e-commerce functionality, AI features, and internal tools while collaborating closely with various teams.

Lead the development of COVU’s AI-native platform, balancing hands-on engineering with technical leadership and mentoring for complex projects.

Lead design, build, and deploy of a Business Partners Portal (3-month timeline) enabling distributors to submit POs, track status, receive notifications, manage documents, and route workflows. Implement secure authentication, role-based access, cloud-hosted environments, disaster recovery, and support UAT, Go-Live, hypercare, documentation, and knowledge transfer while collaborating with IT and business stakeholders.

The role involves leading application performance improvements across multiple platforms, focusing on measurable metrics and driving engineering standards and workflow optimization, using both hands-on coding and strategic influence.

Lead design and build of an AI-native marketing platform: integrations, multi-agent orchestration, UIs, tooling, analytics, CI/CD, auth/multi-tenancy, and production AI agents to automate marketing workflows and drive adoption across teams.

Join a small team to improve a tech product aimed at upskilling users in MENA, working with JavaScript and Node.js in a collaborative remote environment.

Develop and maintain technology solutions, lead complex projects, consult junior staff, analyze client requirements, and oversee project deliverables for compliance.

Build and maintain Apex's business systems platform in Palantir Foundry: configure systems, manage security and updates, integrate data sources, support daily operations, document processes, plan projects, and recommend remediations to meet business needs.

The Full-Stack Software Engineer will enhance user interfaces, APIs, and develop features for AI applications while collaborating with teams and ensuring code quality.

As a Senior Full-Stack and Platform Software Engineer at mabl, you will develop features for an AI-powered test automation platform, enhancing user experiences, designing APIs, and optimizing data pipelines while collaborating with cross-functional teams.

As a Founding Full-Stack Engineer, you'll build AI-native systems, integrating LLMs, prototyping quickly, and collaborating to influence engineering standards and culture.

As a Full-Stack Engineer at Afresh, you'll develop applications to enhance grocery store operations and optimize the fresh food supply chain, while collaborating with product teams and driving new feature development.

Lead design and delivery of production-grade AI-powered full‑stack features, integrating LLMs, agent systems, vector databases, and RAG. Build scalable frontend (React/Next.js) and backend (Python/Go) services, cloud-native infrastructure, CI/CD pipelines, and observability. Influence architecture, mentor teams, and drive technical vision from 0-to-1 through ongoing ownership.

Volunteer Principal Full Stack Engineer to lead and contribute across frontend and backend (React/React Native, Node.js, MongoDB). Own feature development, mentor engineers, collaborate with product/design, ship scalable code, and support CI processes. Must commit 4+ hours weekly and attend a weekly standup; first task includes launching a fundraising campaign.

Lead full-stack modernization of DHS ICE systems by analyzing legacy workflows, designing scalable platform-based applications, building backend services and APIs, developing React-based front ends, integrating with legacy systems (Palantir target), supporting full SDLC, troubleshooting across layers, and collaborating with stakeholders to simplify and translate mission-critical functionality.

Build end-to-end AI-powered video creation features across frontend and backend: implement rich multimedia interfaces, LLM-powered conversational experiences, integrate third-party AI APIs, deploy production-ready systems, and optimize performance and reliability.