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

As a Senior Fullstack Engineer, you'll contribute to backend development for Toast's New Ventures team, collaborating on architecture and launching MVPs while addressing unmet operator needs.

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.

Design, build, deploy, and optimize scalable full-stack applications integrating databases, APIs, and AI/LLM workflows. Lead architecture, CI/CD (ArgoCD, GitLab), Airflow pipelines, and collaborate cross-functionally to deliver production-grade fintech solutions.

The Senior Full-Stack Developer will design, build, and maintain AIO Logic's cloud-based AXIS platform, utilizing React and Java/Spring Boot to deliver software solutions for complex financial workflows, collaborating with cross-functional teams, and mentoring junior developers.

Senior Full Stack Engineer (backend-focused) to design, build, and operate scalable backend systems and APIs, deliver full-stack features, improve reliability and observability, and contribute to architecture and technical strategy in a fast-paced startup environment.

Own architecture and scalability of high-load marketplace systems. Design/refactor backend services and APIs, optimize performance, improve observability, collaborate on CI/CD and cloud deployments, and integrate AI-assisted development while maintaining system reliability and security.

Develop large scale enterprise applications, write APIs, collaborate with team members, optimize performance, and integrate systems.

As a Sr. Full Stack Engineer, you'll develop features across the stack, improve platform performance, and collaborate closely with design and product teams.

As a Senior Full-Stack Engineer Team Leader, you will mentor developers, oversee project execution, manage code reviews, and ensure best practices.

The Senior Full Stack Developer will build end-to-end solutions, collaborate in a remote environment, and write technical documentation. The role requires expertise in Ruby on Rails and various programming paradigms.

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.

The Senior Fullstack Engineer will build and manage enterprise authentication systems, improve user session management, ensure security compliance, and support internal API usage across services, while enhancing performance and reliability.

Design and build agent-powered mission consoles, collaborate with stakeholders to improve user workflows, and maintain agentic workflows for mission outcomes.

As a Senior Software Engineer, you will design and build a cutting-edge identity search platform and implement AI systems for defense applications, working closely with cross-functional teams to enhance user workflows and support national security.

Responsible for leading a team of engineers, supporting product development, identifying technical issues, and ensuring high-quality code delivery in backend systems at scale.

Build and own data-driven dashboards and backend services for DeFi risk analysis. Develop React frontends, GraphQL APIs, and cloud-native data pipelines. Collaborate with research and protocol teams, mentor junior engineers, drive architectural improvements to the Alert Portal, ensure code quality through testing and reviews, and identify product and technical enhancements.

Ship full‑stack SaaS features and fixes, leverage AI‑agentic development workflows to boost throughput, build internal agent/codegen/test pipelines, validate AI output with tests and reviews, decompose monoliths, and collaborate with product and customers on deployments and incidents.

Build end-to-end features, design intuitive interfaces, manage asynchronous backend jobs, and contribute to open-source efforts, while leading project development from concept to monitoring.

As a Senior Full Stack Developer at Capnexus, you'll design and build a cloud-native subcontractor pre-qualification platform using AWS, incorporating AI and modern frontend/backend technologies, ensuring seamless integration and deployment.

The Senior Full Stack Engineer will design and build APIs, develop user-facing features, mentor other engineers, and ensure high-quality software delivery.

As a Senior Full-Stack Engineer, you will build features across React/TypeScript and Python/Django, shape product outcomes, and collaborate with cross-functional teams to ensure user satisfaction and engineering quality.

Design, build, and maintain scalable web applications using Python and React. Collaborate with teams and ensure application security and performance.

Seeking a Senior Fullstack Engineer with frontend focus in React, TypeScript, and Python. Responsibilities include frontend architecture, API building, and leading frontend standards. Requires 5+ years of experience with strong team collaboration.

Design, build, and maintain resilient full-stack services for distributed financial SaaS systems. Lead end-to-end projects, optimize performance, ensure security and observability, mentor teams, and reduce technical debt.

The Senior Software Engineer will design, develop, and optimize scalable PHP APIs and web applications, collaborating with product and design teams to support product development and implement best coding practices.