Top Remote Senior Full-Stack Engineer Jobs in Los Angeles, CA

Build and ship end-to-end features across a TypeScript/Next.js monolith: dashboard, marketing site, billing, email, and AI-assisted tools. Own data models, APIs, third-party integrations, testing, observability, and production quality. Collaborate with the founder, review code, and improve engineering practices while delivering customer-facing features rapidly.

Design, build, and maintain AI-powered B2B SaaS products across frontend, backend, and AI. Own projects end-to-end, collaborate with product and design, ensure maintainability, mentor teammates, and inform roadmap and implementation decisions.

The Senior Fullstack Software Engineer will design, implement, and maintain features for Conveyor's SaaS platform, involving both backend and frontend work, while collaborating closely with team members and mentoring juniors.

Design, build, and optimize scalable cloud and web software with focus on infrastructure, performance, and hardware integration for IoT devices. Collaborate with hardware teams to ensure connectivity and high availability, implement new features, and improve system efficiency.

Build and maintain full-stack product and AI systems: React/React Native frontends, Node.js services, LLM-powered features (agents, RAG), integrations, monitoring, and scalable automation. Ship production features, ensure reliability, and mentor teammates.

Design, build, and own scalable multi-tenant SaaS applications across frontend, backend, and data layers. Improve system architecture, performance, reliability, and testing practices. Integrate AI-assisted tools, mentor engineers, conduct code reviews, and collaborate with Product and Design to deliver intuitive, production-grade software.

Lead and mentor engineers to design, build, and own the Integrations Platform powering 400+ integrations. Drive complex, cross-team projects, set technical direction, develop product functionality and infrastructure using modern frameworks, and enable scalable, declarative integration-building, including AI-enhanced tooling.

Design, build, and maintain scalable backend services and APIs for millions of users. Collaborate with product and UX, implement automated testing, participate in on-call incident management, and mentor teammates while delivering complex distributed-system projects.

Lead end-to-end feature development across API (Node.js), web (React/Next.js), and mobile (React Native). Scope, design, implement, test, and ship production systems; drive architecture and scalability for an AWS-backed, real-time IoT fleet; partner with product and raise engineering standards.

Build and maintain full-stack production applications and services that integrate frontier LLMs. Design, test, and stress-test systems, diagnose failures, prototype rapidly, and collaborate with engineering and research teams to deliver reliable, deployable software and evaluation tooling.

Design, build, and operate scalable backend systems and APIs across a distributed service-oriented architecture. Own features end-to-end, partner with product stakeholders, ship shared infrastructure, and maintain high code quality. Participate in an on-call rotation and collaborate in a distributed North American team to deliver reliable, high-performance user experiences.

Design and deliver scalable backend systems and APIs, own features end-to-end, drive technical direction, collaborate with product stakeholders, build shared infrastructure, and participate in on-call rotations.

Work primarily on backend Node.js services within a large cloud-native platform while contributing to frontend integrations. Design APIs, support serverless and workflow orchestration, implement event-driven processing, improve reliability, optimize data models, and support deployment, monitoring, and incident resolution. Collaborate with distributed teams to ship end-to-end features, conduct code reviews, and evolve system architecture.

Build end-to-end features in a JS/TS stack, designing scalable backend services and responsive real-time frontends. Improve observability, performance, and reliability, collaborate with product/design, and own full-stack implementation from APIs and data models to UI.

Senior full-stack engineer responsible for designing, building, and maintaining TypeScript/React frontends and backend services. Lead architecture, mentor engineers, write automated tests, optimize systems for scalability and performance, and collaborate with product and stakeholders to deliver secure, reliable cloud-based solutions.

The Senior Full Stack Engineer will build platform integrations, work across the full stack, shape product architecture, and collaborate cross-functionally to enhance digital experiences.

Senior Full Stack Engineer building scalable, high-performance web applications. Own feature design through delivery, write clean reusable code, optimize databases, work with CI/CD, containers, cloud, distributed systems, mentor teammates, and maintain zero customer-reported bugs.

Join LTK as a Senior Software Engineer to design, build, and maintain scalable fullstack systems, optimize applications, and mentor engineers in a fast-paced remote environment.

Design, build, and scale end-to-end user-facing web applications. Implement and maintain backend services and APIs, build frontend components (React), model relational data (PostgreSQL), collaborate with product and design, participate in technical design, mentor engineers, and deliver high-quality, user-focused features.

Seeking a Senior Full Stack .NET Developer to work on a social good project, with strong skills in C#, AngularJS, design, and UX. Requires 5+ years of experience.

Lead complex software projects, mentor engineers, and set technical direction at Vanta while contributing to security and compliance solutions.

Build and operate end-to-end premium purchasing and subscription systems (Stripe, Apple/Google IAP, payments). Own projects from design through rollout and reliability, instrument observability, debug production, define metrics, mentor engineers, and drive technical direction and standards.

As a Senior Software Engineer, you'll design and maintain frontend applications and reusable components, integrate APIs, mentor engineers, and ensure high-quality user experiences in the fintech space.

Build and ship full-stack features including customer dashboards and APIs for high-volume, low-latency security telemetry. Integrate with real-time data pipelines to surface detections, improve performance and reliability, own features end-to-end, and partner with product and security research to take prototypes to production.

Lead technical direction for Internal Tools, designing and building end-to-end front-end and back-end systems. Implement recommendation, ranking, and search capabilities, reduce technical debt with refactors, establish engineering standards, mentor engineers, and ensure secure admin interfaces and reusable tooling.