Top Tech Jobs & Startup Jobs

Build and optimize backend microservices, APIs, and data models for a high-scale global payments platform. Collaborate with client engineers, drive architecture and scalability decisions, support payments, fraud, and compliance initiatives, and maintain testing, monitoring, deployment, and secure data handling for low-latency, high-concurrency systems.

Design and deliver high-value human data and evaluation projects for LLMs. Partner with model teams, build tooling to measure data effectiveness, maintain data integrity, design annotation workflows, run evaluations, and scale Human Data operations to improve model quality and truthfulness.

Manage Fortune 500 advertiser relationships to develop, execute, and optimize high-impact digital advertising campaigns using internal tools. Provide client education, troubleshoot campaign issues, analyze performance, support contracts and renewals, give product feedback, and mentor new team members. Role is onsite in New York City.

Provide legal counsel to product and engineering teams on AI, privacy, content regulation, copyright, advertising, and consumer protection. Partner cross-functionally to advise on product features, build scalable legal processes, support international expansion, and stay current on U.S. and international laws affecting xAI products. Work in-office full time and collaborate with Legal, Engineering, Safety, Policy, and Business Development.

The IT Systems Engineer will manage Windows and Linux infrastructure, ensuring reliability and performance through troubleshooting, optimization, and automation. Responsibilities include supporting application stacks, collaborating with teams, and maintaining system documentation and metrics.

Develop and maintain the xAI API for high-throughput inference, managing model serving infrastructure, request routing, and scaling.

Design, build, and optimize high-speed interconnects for AI ML clusters, manage vendor relations, and drive innovation in connectivity solutions.

The Backend Engineer will design and maintain scalable distributed systems, leveraging expertise in Rust or C++ along with databases and observability practices.

Develop and maintain a high-reliability Linux-based OS for a supercomputer network. Write and optimize high-performance device drivers, manage production deployment and debugging, improve observability and configuration tools, and collaborate on hardware bring-up and design with hardware teams and partners.

Provide technical support and troubleshooting for X Ads and analytics, liaise between advertisers, sales, and engineering, identify recurring issues, create documentation, monitor campaign performance and support metrics, and drive process improvements to unblock revenue.