xAI's mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge.

xAI is at the forefront of artificial intelligence development, creating systems to understand the universe and advance human knowledge. This role offers an exciting opportunity to join their Data Acquisition team, where you'll be instrumental in building world-class systems that process hundreds of petabytes of diverse data - from web content to code, images, audio, and video.

As a Software Engineer specializing in Data Acquisition and Web Crawling, you'll be working on systems that power cutting-edge AI models like Grok 3. You'll collaborate closely with pre-training, reasoning, and multimodal teams, helping to define and implement precise data requirements and large-scale classifiers. The role demands expertise in building robust, high-throughput data pipelines and managing petabyte-scale challenges.

The position is based in the Bay Area, offering a competitive salary range of $180,000 - $440,000 USD. xAI operates with a flat organizational structure where initiative and excellence determine leadership opportunities. The team is small, highly motivated, and focused on engineering excellence, making it perfect for those who thrive on curiosity and challenging themselves.

The tech stack includes Python, Rust, Spark, and Kubernetes, and you'll be working with various data modalities and distributed systems. The role requires strong proficiency in compiled languages, experience with large-scale system optimization, and deep knowledge of internet fundamentals. This is an opportunity to directly impact the evolution of transformative AI while working with cutting-edge technology and brilliant minds in the field.

Senior Software Engineer role at xAI focusing on data acquisition and web crawling, building petabyte-scale systems to power next-generation AI models.

Software Engineer - Data Acquisition / Web Crawling

xAI is at the forefront of creating AI systems that aim to understand the universe and advance human knowledge. As their Application Security Engineer, you'll join a small, highly motivated team focused on engineering excellence in a flat organizational structure. This role combines traditional application security with cutting-edge AI security challenges, offering a unique opportunity to shape the security landscape of advanced AI systems.

The position requires a blend of technical expertise in security engineering and AI/ML systems. You'll be responsible for implementing security measures throughout the software development lifecycle, with particular emphasis on code security, CI/CD pipelines, and emerging AI technologies. The role involves conducting code reviews, implementing security best practices, and addressing unique challenges related to AI system security.

This is an ideal opportunity for a security professional who wants to work at the intersection of application security and artificial intelligence. The role offers competitive compensation ($180,000 - $440,000) and the chance to work with cutting-edge technology in both the San Francisco and Palo Alto offices. The company values initiative, excellence, and strong communication skills, making it perfect for those who want to make a significant impact in AI security.

The position requires 3-5 years of experience in application security, with expertise in Python or Rust, and a strong understanding of both traditional security frameworks and AI-specific security challenges. You'll work in a collaborative environment where your input directly influences the security architecture of advanced AI systems.

Senior Application Security Engineer role at xAI, focusing on securing AI systems and applications through code review, security implementation, and AI-specific security measures.

Application Security Engineer

xAI is an innovative AI company focused on creating AI systems that can understand the universe and advance human knowledge. They're seeking a Full Stack Software Engineer to join their post-training team, which transforms pre-trained models into steerable, versatile systems capable of addressing real-world challenges.

The role combines full-stack development expertise with AI model deployment, requiring someone who can build sophisticated data management tools, visualization interfaces, and model evaluation platforms. The position is based in the Bay Area (San Francisco and Palo Alto), offering a competitive salary range of $180,000 - $440,000 USD.

The company operates with a flat organizational structure where all employees are hands-on contributors. They value engineering excellence, strong communication skills, and the ability to work effectively in a small, highly motivated team. The tech stack includes Python, TypeScript, React, and Rust, with gRPC for service communication.

The interview process is comprehensive yet efficient, typically completed within a week, including coding assessments and technical sessions focused on post-training tooling problems. This is an excellent opportunity for an experienced full-stack developer who is passionate about advancing AI technology and wants to work at the frontier of AI development.

The ideal candidate will have expertise in full-stack development, strong software engineering practices, and familiarity with AI model training workflows. They should be capable of building high-performance applications while maintaining code quality and testing standards. The role offers the chance to work on cutting-edge AI technology while contributing to tools that will shape the future of AI development.

Senior Full Stack Software Engineer position at xAI, building tools and platforms for AI model post-training, offering $180k-$440k in San Francisco/Palo Alto.

Full Stack Software Engineer - Post-training

xAI is seeking an Application Security Engineer to join their mission of creating AI systems that understand the universe. This role combines traditional application security with cutting-edge AI security challenges. As part of a small, highly motivated team with a flat organizational structure, you'll be responsible for ensuring the security and integrity of cloud-native applications and AI systems.

The position offers a competitive salary range of $180,000 - $440,000 USD and requires 3-5 years of experience in application security. You'll work on critical security initiatives including code reviews, implementing secure coding practices, and addressing AI-specific security concerns, particularly focusing on the OWASP LLM Top 10.

The ideal candidate will bring strong technical expertise in Python or Rust, experience with security testing tools, and a deep understanding of secure coding practices. You'll work at the intersection of application security and AI, helping to secure both traditional applications and machine learning systems.

xAI operates with a focus on engineering excellence and values strong communication skills. The company culture emphasizes hands-on contribution, initiative, and the ability to deliver excellence. This is an exceptional opportunity for a security professional who wants to work on cutting-edge AI technology while ensuring its secure development and deployment.

Senior Application Security Engineer role at xAI, focusing on securing AI systems and cloud-native applications, offering $180k-$440k in San Francisco & Palo Alto.

xAI, an innovative AI company focused on creating systems to understand the universe, is seeking a Full Stack Software Engineer for their multimodal team. This role combines cutting-edge AI development with full-stack engineering, focusing on creating magical AI experiences across various modalities including images, video, and audio.

The position offers an opportunity to work in a flat organizational structure where initiative and excellence are rewarded with leadership opportunities. The team is small, highly motivated, and dedicated to engineering excellence. The role involves building and improving research tooling, prototyping applications, and advancing research capabilities.

Located in the prestigious Bay Area (San Francisco and Palo Alto), this position offers a competitive salary range of $180,000 - $440,000 USD. The ideal candidate will be an expert full-stack developer with strong experience in Python, TypeScript, React, and Rust, capable of building performant interfaces and research demos while maintaining high standards of code quality.

The role requires someone who can thrive in a fast-paced environment, demonstrate strong communication skills, and work effectively across teams. You'll be at the forefront of multimodal AI development, creating tools and applications that push the boundaries of what's possible in AI research and development.

This is an exceptional opportunity for a senior engineer who wants to contribute directly to advancing AI technology while working with a team of highly skilled professionals in a company that values direct contribution and engineering excellence.

Senior Full Stack Software Engineer position at xAI, focusing on multimodal AI development and research tooling, offering $180k-$440k in San Francisco/Palo Alto.

Full Stack Software Engineer - Multimodal

xAI is an innovative AI company focused on creating AI systems that can understand the universe and advance human knowledge. They're seeking a Senior Software Engineer specializing in Search & Retrieval to join their team in the Bay Area. This role is crucial for providing AI systems with instant access to relevant, accurate, and current information.

The position involves working with cutting-edge search technologies and large-scale data systems. You'll be responsible for developing and optimizing search indexing and retrieval algorithms, advancing retrieval augmented generation, and deploying production search systems. The role requires collaboration with various teams including data, product, and research.

The company operates with a flat organizational structure where all employees are hands-on contributors. They value engineering excellence, strong communication skills, and individuals who can drive projects independently. The team is small but highly motivated, offering an environment where leadership opportunities are based on initiative and consistent excellence.

The compensation is highly competitive, ranging from $180,000 to $440,000 USD annually. The position is based in either San Francisco or Palo Alto, with the company expecting candidates to be located in or willing to relocate to the Bay Area.

The interview process is well-structured, including an initial phone screening followed by four technical interviews covering coding, systems design, project deep-dive, and team fit. The company aims to complete the main interview process within one week.

This is an excellent opportunity for experienced search engineers who want to work on challenging problems at the intersection of search technology and artificial intelligence, while contributing to a mission-driven organization focused on advancing human knowledge through AI systems.

Senior Software Engineer role at xAI focusing on search and retrieval systems, building and optimizing algorithms for AI systems with competitive compensation in San Francisco/Palo Alto.

Software Engineer - Search & Retrieval

xAI is an innovative AI company focused on creating AI systems to understand the universe and advance human knowledge. They're seeking a Full Stack Software Engineer for their post-training team, which transforms pre-trained models into steerable, versatile systems capable of addressing real-world challenges. 

The role combines full-stack development expertise with AI model deployment, requiring someone who can build sophisticated data management tools, visualization interfaces, and model evaluation platforms. The position is based in the Bay Area (San Francisco and Palo Alto), offering a competitive salary range of $180,000 - $440,000 USD.

The team operates with a flat organizational structure where all members are hands-on contributors. The ideal candidate should be an expert full-stack developer with strong experience in Python, TypeScript, React, and Rust, familiar with CI/CD practices and post-training workflows like supervised fine-tuning and reinforcement learning.

The role offers an opportunity to work at the cutting edge of AI development, building tools and platforms that will help advance the field. The company values engineering excellence, strong communication skills, and the ability to work effectively in a fast-paced, collaborative environment. The interview process is comprehensive but efficient, typically completed within one week, including coding assessments and technical sessions focused on post-training tooling problems.

Senior Full Stack Software Engineer position at xAI, building AI model training tools and interfaces, offering $180k-$440k in San Francisco/Palo Alto.

xAI is seeking an AI Engineer & Researcher specializing in Inference to join their mission of creating AI systems that understand the universe. This role combines cutting-edge AI research with practical engineering implementation, focusing on optimizing model inference and building scalable production systems.

The position is based in the Bay Area (San Francisco and Palo Alto) and offers a competitive salary range of $180,000 - $440,000 USD. The team operates with a flat organizational structure where leadership is earned through initiative and excellence.

The role involves working with modern AI technologies including Python, Rust, PyTorch, JAX, and CUDA. A key responsibility includes leading the development of SGLang, one of the most popular open-source inference engines. The successful candidate will focus on optimizing model inference performance, building reliable production systems serving millions of users, and advancing research in scaling test-time compute.

The ideal candidate should have extensive experience in system optimizations for model serving, including batching, caching, and load balancing. Knowledge of low-level optimizations for inference, such as GPU kernels and code generation, is crucial. Experience with algorithmic optimizations like quantization and speculative decoding is also required.

The team values strong communication skills and the ability to share knowledge effectively. The interview process is thorough but efficient, typically completed within a week, consisting of coding assessment, systems hands-on evaluation, project presentation, and team meet-and-greet.

This is an excellent opportunity for a senior-level AI engineer who wants to work on challenging problems at the intersection of theoretical AI research and practical implementation, contributing to systems that will serve millions of users while advancing the field of AI.

Senior AI Engineer & Researcher position at xAI focusing on optimizing model inference and building scalable AI systems, offering $180-440K in San Francisco/Palo Alto.

AI Engineer & Researcher - Inference

xAI, a company dedicated to creating AI systems for understanding the universe, is seeking a DC Server Deployment Engineer for their Memphis data center. This role combines hands-on server hardware expertise with system software knowledge in a high-performance computing environment.

The position requires a skilled professional who can validate, test, integrate, and provision server hardware while working closely with internal system software teams and external vendors. The ideal candidate will be detail-oriented, quick to learn, and excel at executing tasks with precision. They will play a crucial role in ensuring server quality, system health, and the efficiency of server intake and provisioning processes.

The role offers a unique opportunity to work at the intersection of AI and data center operations, with responsibilities including comprehensive server testing, system diagnostics, hardware management, and automation tool development. The successful candidate will need 3+ years of hands-on experience with server infrastructure, strong Linux/Unix knowledge, and proficiency in scripting languages like Python.

Working in a flat organizational structure, team members are expected to be hands-on contributors who can communicate effectively and demonstrate strong initiative. The position offers the chance to work alongside top experts in the industry, contributing to cutting-edge technologies that are reshaping AI and high-performance computing.

The role requires physical presence at the Memphis data center, with the possibility of extended hours when necessary. The company provides a dynamic workplace that encourages creativity, continuous learning, and personal development. This is an excellent opportunity for someone passionate about data center operations and AI technology to make a significant impact in a pioneering organization.

DC Server Deployment Engineer role at xAI focused on server hardware deployment, system software integration, and data center operations in Memphis.

DC Server Deployment Engineer

xAI, a company dedicated to creating AI systems for understanding the universe, is seeking a DC Server Deployment Engineer for their Memphis data center. This role combines hands-on hardware expertise with system software knowledge in a high-performance computing environment. The position requires working alongside Site Operations engineers, focusing on server deployment, testing, and optimization.

The ideal candidate will have strong experience with data center operations, Linux/Unix environments, and automation skills. They'll be responsible for maintaining server infrastructure, troubleshooting complex systems, and developing tools for process improvement. The role demands both technical expertise and excellent communication skills for vendor management and team collaboration.

xAI offers a unique opportunity to work at the forefront of AI technology, with a flat organizational structure that encourages initiative and direct contribution. The company culture emphasizes engineering excellence, curiosity, and hands-on problem-solving. Team members work alongside industry experts on cutting-edge technologies that are reshaping AI and high-performance computing.

The position requires physical presence in Memphis, with potential for extended hours and weekend work when needed. The company provides a dynamic, fast-paced environment focused on innovation and continuous learning, making it an ideal opportunity for those passionate about both hardware infrastructure and advanced AI technology development.

DC Server Deployment Engineer position at xAI in Memphis, focusing on data center operations, server deployment, and system optimization for AI infrastructure.

xAI, a cutting-edge AI research company, is seeking an AI Engineer & Researcher specializing in pre-training scaling, data, and evaluation. The role is based in the Bay Area (San Francisco and Palo Alto) and offers a competitive salary range of $180,000 - $440,000 USD.

The company operates with a flat organizational structure where all employees are hands-on contributors to the mission of creating AI systems that can accurately understand the universe. The team is small, highly motivated, and focused on engineering excellence, making it an ideal environment for curious individuals who thrive on challenges.

The role involves working with state-of-the-art AI technologies, including training trillion-parameter neural networks and implementing cutting-edge methods from deep learning literature. The tech stack includes Python, JAX and XLA, Rust/C++, and Spark. The successful candidate will be responsible for innovating new ideas for pretraining and scaling paradigms, while also improving data quality across different modalities.

The ideal candidate should possess strong engineering skills, expertise in ML and large model scaling, and familiarity with distributed training and multi-GPU neural network optimization. They should also have experience with AI training data preparation and be skilled at organizing data across multiple clouds and modalities.

The interview process is thorough but efficient, typically completed within one week, consisting of a phone screening followed by four technical interviews including coding assessment, systems hands-on, project deep-dive, and team meet-and-greet. The company values strong communication skills and the ability to share knowledge effectively with teammates.

Senior AI Engineering role at xAI focusing on large-scale model training, data preparation, and evaluation, offering competitive compensation in San Francisco/Palo Alto.

xAI Engineering Jobs

xAI's mission is to create AI systems that can accurately understand the universe and aid humanity in its pursuit of knowledge.