Hiring: Full Stack Engineer, Assessment Platform Company: Recruiting from Scratch Location: San Francisco, CA Job Posted Time: 2026-09-17 10:03:50 Employment Type: On-site Target Skills & Keywords : API Design, Event-Driven, GitHub, LLM, Machine Learning, React, TypeScript About the job Experience: •3+ years of professional software engineering experience building production applications. Required Skills: •We're representing one of the fastest-growing AI companies building the infrastructure that powers the AI economy. Their platform connects leading AI labs and enterprises with a global network of experts who generate the high-quality human intelligence required to train and evaluate frontier AI models. •Design, build, and maintain backend services and APIs powering a large-scale AI-assisted assessment platform. •Own product features end-to-end, from technical design and implementation through deployment and continuous improvement. •Build scalable evaluation pipelines that combine human expertise with AI-powered scoring and decision-making. •Develop candidate-facing and expert-facing product experiences using modern frontend technologies. •Partner closely with Product, AI, and Data teams to translate assessment research into production-ready systems. •Improve platform reliability, performance, observability, and operational efficiency across assessment infrastructure. •Design data models and backend architecture supporting high-throughput evaluation workflows. Qualifications: •Background developing workflow systems, evaluation platforms, marketplaces, or productivity software. •Operational familiarity with distributed systems and event-driven backend architectures. •Startup experience with significant product ownership and rapid iteration cycles. •Strong interest in AI infrastructure, machine learning applications, and developer productivity. •High ownership mindset with a passion for shipping impactful products quickly and reliably. Compensation: •$130,000 - $400,000 / year Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!