Full Stack Engineer for AI Systems

About UsAt Vinci, we are revolutionizing simulation technology by combining a robust foundation model for physics with GPU-native solvers, achieving unmatched speed and accuracy in simulations. Our innovative approach eliminates the need for meshing and approximations, enabling engineers to execute thousands of simulations effortlessly and redefining the design and optimization of complex physical systems.Our dedicated teams utilize high-performance computing, secure networking, and seamless cloud integrations to expedite development processes. We are in search of a pragmatic full-stack engineer who is adept in managing customer-facing UIs, backend services, and native C++ integrations. This role demands a proactive individual who can deliver features end-to-end and take full ownership of customer interactions.Role SummaryThis hands-on full-stack position involves building and maintaining Python/gRPC services that interface with our C++ engines. You will be responsible for implementing UI enhancements for customer and internal applications and ensuring that features are accessible and user-friendly. The ideal candidate should be comfortable traversing the technology stack, proficient in delivering production-grade services, and eager to improve product usability and security for our customers.What You’ll DoDesign, develop, and manage Python-based microservices and gRPC APIs that expose native C++ engines and simulation/inference workflows.Execute small-to-medium UI modifications and collaborate with product/UX teams on customer-facing React applications (TypeScript/JS, HTML/CSS), from resolving bugs to adding new functionalities.Implement comprehensive application logic: validate requests, orchestrate jobs, ensure retries/idempotency, maintain transactional integrity, and develop SDKs/APIs for customers.Assist in designing and maintaining distributed systems: job partitioning, managing backpressure, implementing retries, ensuring observability, and autoscaling for services coordinating native compute resources.Debug and analyze performance across the stack — from frontend responsiveness and network requests to Python runtime and native C++ performance hotspots.Establish CI/CD pipelines and automated tests (unit, integration, end-to-end) covering backend, frontend, and native components.Engage in on-call rotations, incident management, and post-mortem analysis; maintain operational documentation and dashboards.Collaborate with product, QA, infrastructure, and customer success teams to ensure features are useful, secure, and thoroughly documented.Mentor fellow team members and contribute to code reviews and knowledge sharing.

About UsIn a world where pilots and surgeons practice in simulated environments, we at Simile are pioneering the future by transforming how society's most critical decisions are modeled and understood.We have created the first AI simulation of society, filled with generative agents that reflect real human behavior. Our groundbreaking research has established the viability of AI-driven simulation and we are currently advancing a Foundation Model designed to predict human actions in diverse scenarios and at any scale.With $100M in funding from prominent investors such as Index Ventures, Hanabi, A*, Bain Capital Ventures, and leading AI figures like Andrej Karpathy and Fei-Fei Li, we are poised to revolutionize our field.Your OpportunityAs a Product Engineer - Member of the Technical Staff, you will be crucial in developing the platform that leverages our foundational model. This role is not limited to UI construction; it involves designing robust infrastructure and interfaces to facilitate complex multi-agent simulations for elite organizations worldwide.We seek full-stack engineers who can seamlessly integrate advanced AI research with production-ready enterprise software. You will architect and scale systems that empower clients to manage thousands of generative agents, observe emergent behaviors, and extract meaningful insights from simulated societies.Key Responsibilities:End-to-End Ownership: Lead the product development lifecycle for new enterprise solutions, from initial design through backend services to user-centric components and APIs.Collaborative Product Development: Work closely with product managers, designers, and customers to simplify complex human behavior simulations into intuitive interfaces.System Evolution: Develop and refine systems that enhance customer workflows, ensuring reliability, performance, and scalability as we model human behavior on a global scale.Technical Excellence: Write clean, well-tested code and engage in thorough code reviews to uphold high standards of system quality and safety in production.Pragmatic Shipping: Balance the need for a sound technical architecture with the urgency to deliver incrementally and learn from real-world applications.

Mithril is building AI infrastructure to make GPU computing accessible for enterprises, AI startups, and research organizations. The company’s customers include LG AI Research, Saronic, and the Broad Institute. Mithril was founded by a former Google DeepMind research scientist and a Stanford CS PhD, and has raised $80 million in seed and Series A funding from Sequoia Capital, Lightspeed Venture Partners, and others. Platform revenue has grown more than sixfold in the past year. Fast Company recognized Mithril as the 8th Most Innovative Company in Artificial Intelligence for 2026. The team is transitioning from bare-metal operations to a cloud-native, multi-provider platform, introducing an auction and flexibility model. This is an opportunity to help shape the platform from its early stages. Role overview The Software Engineer - Technical Staff Member will work across three main areas: Consumption: Developer-facing product, billing, and API Platform: Orchestration and marketplace solutions Supply: Cloud provider integrations and capacity management Engineers at Mithril take on significant ownership, building features end-to-end that support critical customer workloads and drive revenue. The scope includes backend systems, marketplace logic, and customer interfaces. Architectural decisions here have a direct impact on Mithril’s growth and scalability. What makes this role unique This position blends deep systems work with product-facing challenges. Engineers contribute to the orchestration engine that manages GPU capacity across providers, as well as the interfaces customers use to reserve, bid, and utilize resources. The systems built in this role handle financial transactions, real workloads, and market mechanisms such as spot auctions, reservation pricing, and capacity allocation. For those interested in the mechanics of GPU infrastructure markets and building the technology behind them, this role offers direct involvement. Location This role is based in Palo Alto or the San Francisco Bay Area.

About Us At vinci4d, we are revolutionizing the hardware design landscape with our cutting-edge AI assistant, aimed at empowering engineers to accelerate their design iterations by a staggering 1000 times.Our innovative foundation model, driven by geometry and physics, is tailored for each category of part design.We are on the lookout for passionate individuals who thrive on product development to enhance our Minimum Viable Product (MVP).Your ResponsibilitiesAs a pivotal member of our team, you will design and develop the essential pipelines and tools that transform our vision into reality. Your contributions will significantly expedite our development processes by facilitating smooth transitions from code development to deployment. Key responsibilities include:Enhancing product features for scalability and developing advanced APIs to support intricate engineering workflows.Establishing and integrating LLM or VLM infrastructure.Implementing an MLOps framework for training deep learning models using geometry and physics data.Collaborating with early customers and design partners to strategize and prioritize the development roadmap.Building and deploying critical product features.Gaining invaluable experience while creating products that resonate with engineers, and learning about the entrepreneurial journey.QualificationsA minimum of 6 years in developing and delivering features within the high-performance computing domain.Expertise in C++, Python, or any relevant language necessary for system setup, along with familiarity with tools such as gRPC, Protocol Buffers, Docker, Kubernetes, and Bazel.Experience with cloud computing for data generation, scraping, and assisting data science teams in model training with MLOps is a plus.CUDA experience is desirable but not mandatory.Frontend development experience is a bonus.Prior experience in a startup environment will be highly valued.You’ll Thrive in This Role If YouAre enthusiastic about entrepreneurship and the process of transforming ideas from concept to reality.

About SimileAt Simile, we believe in revolutionizing decision-making by simulating the complexities of society. Just as pilots and surgeons train in controlled environments, we aim to equip organizations with the ability to anticipate human behavior through advanced AI simulations. Our pioneering research has established a new frontier in AI-based modeling, allowing us to forecast human behavior across various scenarios and scales.With substantial backing of $100 million from prominent investors including Index Ventures and AI luminaries such as Andrej Karpathy and Fei-Fei Li, we are committed to pushing the boundaries of artificial intelligence.Join Our Infrastructure TeamThe Infrastructure team at Simile is crucial to our platform's success. We design and implement the foundational systems that enable our AI agents to function securely and efficiently on a large scale. We specialize in high-scale cloud networking and distributed systems, ensuring enterprise-grade privacy.Our Work is Organized Around Three Key Pillars:Cloud Foundation: Overseeing our multi-cloud environment (AWS/GCP) to ensure high availability and cost-efficiency through Infrastructure-as-Code.Enterprise Deployments: Creating streamlined pathways for VPC peering, PrivateLink, and BYOC (Bring Your Own Cloud) architectures tailored for our largest clients.Platform & Reliability: Developing CI/CD pipelines and observability stacks (including p99 latency tracking and SLOs) that empower our entire engineering organization to deliver safely and effectively.Role OverviewWe are on the lookout for a driven Infrastructure Engineer who is passionate about navigating the intricacies of modern deployment strategies. You will take charge of our infrastructure roadmap from conception through to operational execution, ensuring our platform remains resilient, compliant, and primed for global scalability.Key ResponsibilitiesArchitect Multi-Cloud Environments: Design and expand multi-region architectures across AWS and GCP, addressing global data residency and failover needs.Enhance Engineering Velocity: Collaborate with Product Engineering, Research, and Security teams to develop internal tools and paved pathways that accelerate development and empower engineering teams.

At SpaceX, we envision a future where humanity explores the stars. Our mission is to develop the technologies necessary to make life on Mars a reality. Join us in revolutionizing space travel and connectivity.Position: Full Stack Software Engineer (Starlink)As part of the SpaceX team, you will leverage our extensive experience in rocket and spacecraft development to enhance Starlink, the world's most advanced broadband internet service. With the largest satellite constellation, Starlink provides fast and reliable internet access to millions globally. Our operations encompass the design, construction, testing, and deployment of thousands of satellites along with consumer hardware and software solutions. We are seeking top-tier engineers to optimize Starlink's impact on communities and businesses worldwide.In this role, you will collaborate closely with both external clients and internal teams across various engineering disciplines to enhance the observability of our rapidly expanding network. Your contributions will empower Starlink users to efficiently manage their assets across aviation, maritime, and enterprise environments, while also enhancing key features across multiple platforms. Your expertise will be crucial in the successful development of mission-critical, high-performance web applications. You may work within various sub-teams, including:Internal Tooling & DevelopmentWeb Application DevelopmentConsumer Platform Development

Rivian and Volkswagen Group Technologies have partnered to advance electric vehicle technology and set new benchmarks for software-defined vehicles. Together, these established automotive companies focus on building a smarter, more sustainable mobility ecosystem by combining expertise in connectivity, artificial intelligence, and cybersecurity. Their shared mission centers on innovation and creating a cleaner, more connected future. Role overview The Factory Platform team is looking for a Senior Full-Stack Software Engineer - Factory Systems to design and develop advanced manufacturing software. This position plays a key role in transforming how vehicles are built, with an emphasis on improving production quality and efficiency. Senior engineers in this group lead major projects and deliver solutions that have a direct impact on automotive manufacturing. The role reports to the Senior Manager of Equipment and Execution Platform and calls for strong technical skills and a focus on practical results. Locations Palo Alto, CA Irvine, CA Normal, IL This position offers the opportunity to contribute to meaningful innovation in the automotive industry while growing your career in a collaborative, forward-thinking setting.

About the Role SpaceX is hiring a Senior Full Stack Software Engineer in Palo Alto, CA to support the Starlink satellite internet project. This position involves building and maintaining web applications that handle both front-end and back-end tasks. The work spans multiple technologies and focuses on creating scalable, reliable solutions. What You Will Do Design, develop, and maintain web applications for Starlink Work on both client-side and server-side code Tackle complex technical challenges with a focus on performance and scalability Deliver software that meets high standards for quality and reliability Location This role is based in Palo Alto, CA.

Join our hybrid work environment where most US-based roles allow for remote work (exceptions noted below).Our Mission:To seamlessly connect individuals with their next outstanding career opportunity.Who We Are:ZipRecruiter is an industry-leading online employment marketplace. Leveraging advanced AI-driven smart matching technology, we connect a diverse array of businesses and job seekers through innovative mobile, web, and email platforms, as well as through strategic partnerships with top job boards. Our job search app is rated #1 on both iOS and Android.About the Team:Our team has a unique chance to develop applications that serve millions of job seekers and tens of thousands of clients. We are focused on cultivating a dynamic marketplace for job seekers and employers, requiring full-stack engineers to craft high-performance, scalable applications that facilitate seamless connections. Our essential service has led to a thriving business.Our technology stack is sophisticated, and we seek engineers who are adept at writing adaptable, well-instrumented, and efficient code within a growing distributed system. We are building mobile-first web applications, seeking individuals who excel at creating fast and user-friendly experiences.About the Job:Design and implement robust web applications capable of scaling to meet the needs of a diverse user base.Elevate engineering standards and innovate in our approach to both backend and frontend development.Effectively communicate and deliver intricate technical solutions to a range of stakeholders, both technical and non-technical.Collaborate closely with cross-functional teams to continually enhance product offerings.

About UsAt vinci4d, we are pioneering a revolutionary co-pilot for hardware designers, aiming to empower 9 million mechanical engineers to accelerate their design processes by a factor of 1000.Our innovative approach involves developing a geometry and physics-driven foundation model tailored for diverse part designs.We are proud to have secured initial funding from Khosla Ventures, propelling us forward in our mission.About YouYou are a passionate Computational Fluid Dynamicist skilled in developing flow solvers for intricate geometrical applications. Your expertise encompasses external flows over dynamic vehicles (aircraft, missiles, automobiles), as well as fluid movement through machinery such as ducts, turbo-machinery, refrigeration systems, and computer heat sinks. Terms like conjugate heat transfer, multi-physics applications, and complex geometries excite you.Your ResponsibilitiesDesign, develop, and deploy simulation codes for single and multi-physics configurations, emphasizing Conjugate Heat Transfer.Optimize code performance on contemporary architectures, including GPUs.Implement advanced linear and nonlinear solvers to reduce time to solution.Collaborate in strategizing, planning product roadmaps, and prioritizing development alongside early customers and design partners.Develop and launch critical product features.Engage in continuous learning while creating products that resonate with engineers, gaining insights into entrepreneurship.

Whop builds tools for individuals and businesses to create, connect, and transact within a single online marketplace. The platform supports payment acceptance, business launches, and network engagement for users worldwide. Each year, Whop manages payouts exceeding $3 billion across 144 countries. The company is growing rapidly, with monthly growth rates near 25%. Whop is supported by major investors such as Insight, Bain Capital Ventures, Peter Thiel, and most recently Tether. The team includes over 75% former founders, many of whom have scaled their own businesses beyond $1 million in revenue. Leaders at Whop bring experience from companies like Meta and Robinhood. More information about Whop is available at whop.com.

Join Voltai as a Full Stack EngineerAt Voltai, we are pioneering the development of world models and intelligent agents capable of learning, evaluating, planning, experimenting, and interacting with the physical world. Our initial focus is on advancing hardware technologies, including electronic systems and semiconductors, where artificial intelligence can design and innovate beyond traditional cognitive boundaries.About Our TeamSupported by leading Silicon Valley investors and esteemed affiliations with Stanford University, our team comprises former Stanford professors, distinguished SAIL researchers, Olympiad medalists, and industry leaders from Google, AMD, Broadcom, and more. Our diverse expertise includes contributions from former US government officials, ensuring a rich environment of innovation and strategic insight.Your RoleAs a Full Stack Engineer, you will play a crucial role in shaping our technology solutions by leveraging your software engineering skills to develop both frontend and backend applications, ultimately contributing to our mission of technological advancement.

About xAIAt xAI, we are on a mission to develop advanced AI systems that enhance our understanding of the universe and help humanity achieve its knowledge goals. Our dedicated team is small yet highly driven, emphasizing engineering excellence. We value individuals who thrive on curiosity and are eager to tackle challenges head-on. With a flat organizational structure, we empower all employees to take initiative and contribute meaningfully to our mission. Exceptional work ethic, prioritization skills, and strong communication abilities are essential for success in our collaborative environment. About the RoleWe are in search of outstanding engineers eager to embark on an innovative project aimed at integrating Grok into every aspect of our Advertising Platform. We seek individuals with extensive experience in developing high-performance advertising products and systems at scale, encompassing bidding, auction, marketplace dynamics, ranking, prediction, and product functionalities. Your expertise will help us leverage xAI’s technology stack to revolutionize our advertising solutions.Your ResponsibilitiesUtilize state-of-the-art Grok models to enhance all facets of our advertising stack, including candidate selection, ranking, auctions, campaign optimization, creative development, and improving the advertiser experience.Take ownership of systems and products that drive significant revenue for the company.Who You AreYou possess 3+ years of industry experience in creating large-scale, high-throughput, AI-driven advertising solutions.Technical ProficienciesProficient in Python, Jax, and Rust.LocationOur engineering team is based in Palo Alto, CA. While we typically work from the office five days a week, we offer flexible work-from-home options when needed.Interview ProcessUpon submitting your application, our team will review your resume and documentation of your outstanding work. If your application meets our criteria...

About xAIAt xAI, our vision is to develop AI systems that deeply comprehend the universe and assist humanity in its quest for understanding. Our team is a close-knit, highly driven group committed to engineering excellence. We welcome individuals who relish challenges and thrive on curiosity. Operating within a flat organizational structure, we expect all employees to be hands-on contributors to our mission. Proactive leadership is recognized, and a strong work ethic combined with exceptional prioritization skills is essential. Effective communication is crucial, as employees must be able to share knowledge clearly and precisely with colleagues.ROLE OVERVIEW:Join our Grok Voice Model team to engineer the leading voice AI technology. We aim to facilitate seamless, natural, low-latency spoken interactions that are expressive, multilingual, and reliable across devices and real-time applications. We manage the entire training pipeline, encompassing extensive data curation, high-quality audio processing, cutting-edge speech-language pre-training, and rigorous post-training to maximize quality, speed, and stability.Our aspiration is to make conversing with AI feel like engaging with the most charming, knowledgeable, and kind individual imaginable. We are in search of exceptionally intelligent, execution-focused engineers to help us achieve this goal.

At Rhoda AI, we are pioneering the development of the full-stack architecture for the future of humanoid robotics. Our innovative work spans from high-performance, software-defined hardware to foundational models and visual models that govern it. Our robots are designed as generalists, capable of navigating complex, real-world environments and addressing scenarios that were not included in their training. We collaborate at the intersection of large-scale learning, robotics, and systems, with an exceptional research team featuring experts from Stanford, Berkeley, Harvard, and other prestigious institutions. We are not merely creating a feature; we are establishing a groundbreaking computing platform for physical tasks. With over $400M raised, we are heavily investing in R&D, hardware development, and scaling up manufacturing to turn our vision into reality.We are seeking a talented Full Stack Software Engineer to contribute to the development of our crucial automation platform. This tool is vital for how we gather data, validate task performance, manage model versions, and quickly iterate on model training and deployment.

About Arc Institute The Arc Institute is a pioneering scientific organization dedicated to advancing curiosity-driven basic science and technology aimed at understanding and addressing complex human diseases. Based in Palo Alto, California, we operate independently while collaborating closely with esteemed institutions like Stanford University, UCSF, and UC Berkeley. While traditional university models have yielded significant successes, we emphasize the need for institutional innovation to foster progress. Our key initiatives include: Funding: We fully fund our Core Investigators’ research groups, freeing scientists from the constraints of project-based external grants. Technology: Our Technology Centers focus on developing, optimizing, and deploying cutting-edge experimental and computational tools in partnership with Core Investigators. Support: We provide exceptional operational, financial, and scientific support, empowering researchers to engage in long-term, high-risk, high-reward projects that seek to advance cures for diseases such as neurodegeneration, cancer, and immune dysfunction. Culture: We believe in the vital importance of cultivating a scientific culture that prioritizes curiosity, a commitment to truth, ambition, and collaborative spirit. With a team exceeding 350 individuals and over $650 million in committed funding, our state-of-the-art laboratory facility in Palo Alto positions Arc Institute for rapid growth in the coming years. About the Position We are seeking a Full Stack Engineer with a strong focus on backend and internal tools to enhance the software infrastructure that drives scientific innovation at Arc. In this role, you will be responsible for developing platforms essential for our researchers, including genomics submission systems, data catalogs, and machine learning tools, while also contributing to public-facing products like the Virtual Cell Challenge. This position involves hands-on collaboration with biologists, bioinformaticians, and machine learning engineers to understand their workflows and create indispensable tools that enhance their research capabilities. About You You excel at the intersection of engineering and domain expertise and enjoy collaborating with multidisciplinary teams. You are passionate about leveraging technology to address complex biological challenges and enhance scientific discovery. Your experience in software development and problem-solving will enable you to contribute meaningfully to our mission.

Join SpaceX as a Member of Technical Staff, where you will play a crucial role in supporting government initiatives and projects that require top-secret clearance. Your expertise will contribute to the development of cutting-edge technologies that are transforming space exploration and enabling humanity's future in space.

xai is seeking a Technical Staff Member focused on Post-Training and Reinforcement Learning at its Palo Alto, CA location. This position centers on advancing AI technology through hands-on project work and collaboration. Role overview This role involves contributing to projects that explore and extend the capabilities of AI systems. The work emphasizes post-training techniques and reinforcement learning methods, supporting the ongoing development of advanced solutions. Collaboration Teamwork is central to this position. You will work closely with colleagues to share ideas, refine approaches, and help shape the next generation of AI systems at xai.

About SimileAt Simile, we are redefining how society’s most impactful decisions are made. Just as pilots and surgeons practice under controlled conditions, we believe that critical societal choices should not be made in untested environments.Our groundbreaking AI simulation of society, powered by generative agents modeled after real humans, is revolutionizing the field of AI-driven simulation. We are on a mission to accurately predict human behavior across diverse scenarios and scales.With $100 million in funding from renowned investors such as Index Ventures, Hanabi, A*, Bain Capital Ventures, and notable AI pioneers like Andrej Karpathy and Fei-Fei Li, we are poised for remarkable growth.