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# Senior Fullstack Engineer

- **Company:** RECRUITER EXCHANGE INC
- **Location:** San Francisco, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Software Quality, Software Debugging, Software Design Documents, Design of User Interfaces, Human-Computer Interaction, Python (Programming Language), Next.js, Web Applications, Scripting, ReactJS, Large Language Models, Caching, Backend, Machine Learning Operations
- **Published:** November 2, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-fullstack-engineer-san-francisco-ca--45c34330-874d-4b0d-b41e-a6b26e4404c7

## About the Role

Internet Application, Python Programming/Scripting Language, React.js, Memory Hardware, Application Programming Interface (API), User Interface/Experience (UI/UX), Data Modeling, Caching, Typing, Test Plan/Schedule, We need someone with a minimum of 3 years of experience shipping full-stack web applications at scale using Next.js/React and Python. You should be comfortable owning features end-to-end, from design docs to rollout and post-launch iteration, and have a strong code quality mindset. Bonus points if you have experience integrating LLM/memory features or familiarity with vLLM and model serving.

## Description

* Ship end-to-end features: Design APIs, build UIs, write backend logic, own data models, and deploy to production.
 * Build for scale & speed: Optimize latency, caching, and query patterns; keep pages snappy and backends reliable.
 * Own quality: Write tests, enforce typing/linting, review PRs, and maintain clean, well-documented code.
 * Collaborate deeply: Work with Design for great UX, with Research to integrate new memory capabilities, and with customers to refine requirements.
 * Operate what you build: Add observability, set alerts, debug prod issues, and drive continuous improvements.
 * Lead with product sense: Prioritize ruthlessly, make tradeoffs explicit, and iterate based on data and feedback.
 * Go beyond your lane: Unblock teams, learn new tools on the fly, and do what it takes to deliver.