Ai Systems Engineer in United States

About Us: AI needs a new infrastructure layer. We're building it at Modal. Every era of computing brought new workloads that previous infrastructure couldn't support: mainframes, databases, and the cloud. Each time, the company that rebuilt the layer underneath defined the decade. AI is no different, except it touches everything instead of one slice, and the window to build the layer underneath it is open right now. Our customers include category-defining companies like Lovable , Ramp , Cognition, DoorDash, and Suno. They rely on Modal for instant GPU access, sub-second container starts, and native storage, so it's simple to serve low-latency inference, fine-tune models, and access production-ready sandboxes at scale. We recently raised a $355M Series C at a $4.65B valuation, led by General Catalyst and Redpoint Ventures. We've crossed $300M+ ARR and grown fivefold since September. Our team includes creators of popular open-source projects (e.g., Seaborn , Luig i ), academic researchers, international olympiad medalists, and experienced engineering and product leaders with decades of experience. The Role: We’re looking for an Infrastructure Security Engineer to design and secure the core systems that power our platform. This role focuses on building security directly into our infrastructure—from container isolation and orchestration to identity and secrets management in a multi-tenant, cloud-native environment. You’ll work closely with engineering teams to define secure primitives and ensure our platform is resilient, scalable, and trustworthy by design. This is a hands-on, deeply technical role focused on real systems, not compliance or policy. What You'll Do: Platform & Runtime Security Design and improve isolation mechanisms for multi-tenant workloads (containers, sandboxing, execution environments) Strengthen boundaries between customers, workloads, and internal systems Identify and mitigate risks in distributed, dynamic compute environments Container &

What you’ll do Partner with medical image reconstruction scientists / engineers to build ML components that improve reconstruction quality, speed, robustness, or quantitative accuracy. Define training/evaluation pipelines, datasets, and metrics that map to user needs and design requirements. Productionize models: inference performance, reproducibility, monitoring for drift/regressions, and safe fallbacks. Collaborate on hybrid algorithms, incorporating physics and learned priors, denoisers, learned regularizers, and quality estimation. Help build tooling for rapid experimentation as well as rigorous verification of algorithm changes. What we’re looking for Strong applied ML experience plus comfort with signal processing / imaging or adjacent domains. Ability to move fluidly between research prototypes and production-quality systems. Strong evaluation discipline: metrics, ablations, data leakage avoidance, and reproducibility. A demonstrated track record of applying ML to physics-based or inverse problems (i.e., shipped projects, a portfolio, or publications.) Useful experience ML for imaging/inverse problems (or adjacent) with strong evaluation discipline and comfort with GPU performance constraints. Pragmatic production mindset: reproducible training/inference, regression testing, and safe deployment in high-stakes contexts. A background in computational physics or scientific computing. Leverage ML-based methods such as PiNNs and Neural Operators to solve partial differential equations arising in ultrasound simulation and imaging. Experience in Agentic-SciML is a plus. Hands-on experience with data curation for ML: building datasets from messy, real-world sources, defining ground truth, and managing labeling or simulation pipelines. Background in data assimilation: combining observations with physics-based models (Kalman filtering, variational methods, ensemble approaches, or learned variants).

At Snowflake, we are powering the era of the agentic enterprise. To usher in this new era, we seek AI-native thinkers across every function who are energized by the opportunity to reinvent how they work. You don’t just use tools; you possess an innate curiosity, treating AI as a high-trust collaborator that is core to how you solve problems and accelerate your impact. We look for low-ego individuals who thrive in dynamic and fast-moving environments and move with an experimental mindset — who rapidly test emerging capabilities to discover simpler, more powerful ways to deliver results. At Snowflake, your role isn't just to execute a function, but to help redefine the future of how work gets done. Senior Software Engineer — Cortex Training The Snowflake ML Platform team's mission is to let customers run their most demanding ML/AI workloads inside Snowflake. Cortex Training is our LLM post-training platform: it turns scarce, expensive GPU capacity into a simple, composable service, so customers can adapt open-weight foundation models to their own business problems while we handle the hard distributed-systems parts, including scheduling, orchestration, multi-node training and inference, fault tolerance, and throughput. The platform already runs post-training at scale. Under the hood, it decouples GPU computation from the training loop and exposes it as primitive APIs that compose into everything from SFT to full RL workflows. You'll work alongside a team that ships fast & sweats reliability and the researchers behind DeepSpeed. We're looking for an engineer who thrives in the ML infrastructure layer and brings a solid understanding of LLMs and post-training to help us scale and grow it. YOU WILL: Design and build across the full stack — from the public training APIs and SDK through the control plane to the GPU data plane. Scale the distributed systems that make GPU compute serverless — multi-tenant scheduling, placement, and capacity-aware routing across regional G

Software Quality Engineer Description - This role is responsible for maintaining the quality, reliability, and performance of software applications throughout the development lifecycle. The role identifies and rectifies defects, ensures adherence to established quality standards, and contributes to the overall improvement of the software development process. The role involves various activities aimed at preventing and detecting issues, thereby enhancing the end user experience. The role creates and executes comprehensive test plans, test cases, and test scripts based on project specifications. *Onsite in Ft. Collins 5-days a week Responsibilities • Executes established test plans and protocols for assigned portions of code for end-user applications, systems software, and firmware running on hardware, local, networked, and Internet- based platforms; identifies, logs, and debugs assigned issues. • Perform Functional and Solution Testing of Video/Collaboration Software • Additionally, codes and programs test scripts, automation, and integration activities based on specific test requirements. • Conducts functional, integration, regression, and performance testing to validate software functionality. • Automates testing processes using appropriate tools and frameworks to improve efficiency and repeatability. • Monitors and enforces adherence to established coding standards, design guidelines, and best practices. • Monitors software performance and conducts load and stress testing to identify bottlenecks and performance issues. • Prepares and maintains QA-related documentation, including test plans, test matrices, and testing reports. • Develops understanding of and relationship with internal and outsourced development partners on software applications design and development. • Participates as a member of project

Software Quality Engineer Description - This role is responsible for maintaining the quality, reliability, and performance of software applications throughout the development lifecycle. The role identifies and rectifies defects, ensures adherence to established quality standards, and contributes to the overall improvement of the software development process. The role involves various activities aimed at preventing and detecting issues, thereby enhancing the end user experience. The role creates and executes comprehensive test plans, test cases, and test scripts based on project specifications. *Onside in Ft Collins 5-days a week Responsibilities • Executes established test plans and protocols for assigned portions of code for end-user applications, systems software, and firmware running on hardware, local, networked, and Internet- based platforms; identifies, logs, and debugs assigned issues. • Perform Functional and Solution Testing of Video/Collaboration Software • Additionally, codes and programs test scripts, automation, and integration activities based on specific test requirements. • Conducts functional, integration, regression, and performance testing to validate software functionality. • Automates testing processes using appropriate tools and frameworks to improve efficiency and repeatability. • Monitors and enforces adherence to established coding standards, design guidelines, and best practices. • Monitors software performance and conducts load and stress testing to identify bottlenecks and performance issues. • Prepares and maintains QA-related documentation, including test plans, test matrices, and testing reports. • Develops understanding of and relationship with internal and outsourced development partners on software applications design and development. • Participates as a member of project t

About Glean: Glean is the Work AI platform that helps everyone work smarter with AI. What began as the industry’s most advanced enterprise search has evolved into a full-scale Work AI ecosystem, powering intelligent Search, an AI Assistant, and scalable AI agents on one secure, open platform. With over 100 enterprise SaaS connectors, flexible LLM choice, and robust APIs, Glean gives organizations the infrastructure to govern, scale, and customize AI across their entire business - without vendor lock-in or costly implementation cycles. At its core, Glean is redefining how enterprises find, use, and act on knowledge. Its Enterprise Graph and Personal Knowledge Graph map the relationships between people, content, and activity, delivering deeply personalized, context-aware responses for every employee. This foundation powers Glean’s agentic capabilities - AI agents that automate real work across teams by accessing the industry’s broadest range of data: enterprise and world, structured and unstructured, historical and real-time. The result: measurable business impact through faster onboarding, hours of productivity gained each week, and smarter, safer decisions at every level. Recognized by Fast Company as one of the World’s Most Innovative Companies (Top 10, 2025), by CNBC’s Disruptor 50, Bloomberg’s AI Startups to Watch (2026), Forbes AI 50, and Gartner’s Tech Innovators in Agentic AI, Glean continues to accelerate its global impact. With customers across 50+ industries and 1,000+ employees in more than 25 countries, we’re helping the world’s largest organizations make every employee AI-fluent, and turning the superintelligent enterprise from concept into reality. If you’re excited to shape how the world works, you’ll help build systems used daily across Microsoft Teams, Zoom, ServiceNow, Zendesk, GitHub, and many more - deeply embedded where people get things done. You’ll ship agentic capabilities on an open, extensible stack, with the craf

Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. This Notice is provided as a result of the filing of applications for permanent alien labor certification for the positions noted below. Any person may provide documentary evidence bearing on an application to the Certifying Officer, U.S. Department of Labor, Employment and Training Administration, Office of Foreign Labor Certification, 200 Constitution Avenue NW, Room N–5311, Washington, DC 20210. Employer: Micron Technology, Inc. Job Title: Firmware Engineer Job Requisition: JR42883 Job Location: Longmont, Colorado Job Type: Full Time Rate of Pay: $100,000 to $254,000 Duties: Develop high-performance controller firmware for innovative volatile and non-volatile memory systems. Assist in evaluating, designing, building, bench testing, debugging, and failure analyzing firmware for new high-performance memory controllers and Solid State Drives that will increase performance, while reducing power, latency and SoC (System on Chip) complexity for the target markets. Work closely with system test engineers, system failure analysis engineers, firmware engineers, firmware test engineers, system hardware design engineers, product engineers, memory design engineers, firmware tools developers, and production engineers to solve cross-functional product development issues. Validate customer requirements and perform failure analysis on FW related issues. Develop structure

The SCG Architecture team is hiring a Senior Power Integrity Co-Design Engineer to architect and deliver di/dt mitigation across silicon, package, board, and platform. This role bridges architecture, silicon, and platform — translating product noise targets into shipped specifications, and feeding silicon findings back into the next generation's build. Success in this role requires strong systems thinking and a willingness to accept ambiguity. It also requires the ability to apply AI as a force multiplier while maintaining rigorous engineering judgment. What you'll be doing: Architect voltage-noise mitigation across the full stack — silicon, package, board, platform — and own the codesign trade-offs between them. Co-design noise features with Speed, Power, Reliability, Circuit Design , Power-Arch, ASIC, and platform teams. You're the connective tissue across the codesign web. Work with other team members to define product-level voltage noise targets, drive them to closure, and sign them off at shipment. Build and take ownership of the Sim-to-Si correlation methodology for noise. You know when a model is lying and when silicon is. Model and prototype next-gen noise features — transient sense, droop response, mitigation IP, and codify them so every future program inherits them. Lead show-stopper noise bugs during bringup. The critical issues stop with you. Drive architecture-level codesign tradeoffs across V/F Power Noise Reliability Thermal (Noise-Variation) and (Noise-to-Closure) boundary work, where the highest-leverage innovation lives. What we need to see: BS / MS / PhD in EE, CE, or related (or equivalent experience). 5+ years in silicon power integrity, voltage noise, or PDN. Deep expertise in at least one of

Replit is the agentic software creation platform that enables anyone to build applications using natural language. With millions of users worldwide, Replit is democratizing software development by removing traditional barriers to application creation. As a Support Engineer you are at the forefront of helping those developers create. In a given day you’ll help folks with all sorts of things ranging from general Replit usage questions, identifying and debugging issues on the platform and helping to build and maintain the tools we use. We use tools like Zendesk, Linear, Slack, and Replit itself to get the job done. We also value solving the problems we can ourselves. We have a number of tools we build and maintain ourselves. You will work on a small, global team of support specialists and engineers united by Replit's mission to make the next billion software creators. Together, you'll ensure developers worldwide have the support they need to bring their ideas to life. In this role you will: Work directly with Replit customers via support tickets to solve technical product issues, bugs, and provide technical guidance while meeting daily ticket volume and resolution time targets. Collaborate with the rest of the Support team in telling the story of our users to the rest of Replit. Directly contribute to and maintain the Support team's Knowledge Base. Support customer-facing communications for outages and incidents and swiftly report ongoing bugs for Eng to triage and fix. Required Skills and Experience: Prior experience in software development or relevant technical support experience Proven ability to work efficiently in fast-paced, high-volume support environments with strict productivity metrics. Strong time management and ticket triage skills with comfort in performance tracking and regular reporting. Excellent communication skills with initiative to ask questions when encountered with the unknown. Experience with support tools and ticketing systems (e.g. Zendesk) Nic

The way products get built is changing. Agents write a growing share of shipped interfaces, designers work in code, and a design system's output is bigger than a component library. At Datadog we're redefining ours for that world, and evolving how the product looks and feels at the same time. DRUIDS is the design system behind every Datadog surface, used daily by more than a hundred designers and thousands of engineers across thirty-plus products. You'll lead the team that owns it: designers and design engineers who set the system's direction, hold the quality bar for what ships, and build the tools that make designing in code the default way to work. The team partners closely with product designers, frontend engineers and PMs across the company. This is a hands-on leadership role in a technical, engineering-forward company. You'll be expected to have a point of view and defend it, to be the person the design org asks about quality, and to make the call when work isn't good enough yet. Much of what a design system should be right now hasn't been settled — here or anywhere else. If you're a designer who never stopped making things, and you'd rather decide what a system should be than maintain one that already exists, this is the role. At Datadog, we place value in our office culture - the relationships and collaboration it builds and the creativity it brings to the table. We operate as a hybrid workplace to ensure our Datadogs can create a work-life harmony that best fits them. What You'll Do Lead the team and set its direction Decide what DRUIDS owns, what it ships, and what stays with product teams. Own where the system goes next. Have a view on what a design system should be, and argue for it. Turn direction into a roadmap, and work with partners on what gets built and when. Coach the designers and design engineers on your team, be clear about what each person owns, and hire as the team grows. Own craft and quality Own the craft and quality of components, patterns,

Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. Our team is at the forefront of developing next-generation memory and AI computing platforms. We are core contributors to the design, validation, and mass production of advanced systems using emerging memory technologies, ASICs, FPGAs, high-speed digital interfaces, mixed-signal and analog circuitry, and complex power delivery architectures! We are seeking a highly experienced Mechanical & Thermal Engineer to provide technical leadership and drive the mechanical and thermal architecture of ground breaking hardware platforms. This role offers the opportunity to influence product strategy, lead critical engineering decisions, and collaborate across global multidisciplinary teams to enable world-class computing solutions. The ideal candidate brings deep expertise in thermal, mechanical, and heat mitigation solutions for memory product. They demonstrate strong analytical and problem-solving skills. They have a proven record of delivering products from concept through high-volume manufacturing! Performs design and development engineering assignments related to hardware products and systems including development of new products or updates to existing products. Work may encompass one or more areas of engineering including electronic design, mechanical design, or other related fields. Duties may include research, evaluation, development, and application of new processes and methods into products. May be responsible for establishing and conducting testing routines, developing or implementing project plans, budgets, and schedules, and documentation

Our vision is to transform how the world uses information to enrich life for all . Micron Technology is a world leader in innovating memory and storage solutions that accelerate the transformation of information into intelligence, inspiring the world to learn, communicate and advance faster than ever. Micron is seeking a highly motivated and experienced Technical Staff Member to join our Quality Engineering team in Boise, ID. Your role will be crucial in ensuring the reliability and quality of wafers shipped from our Boise manufacturing site! Summary The Product Quality and Reliability team ensures Micron delivers high-quality, reliable semiconductor solutions that meet customer expectations and business objectives. The team partners across product engineering, design, technology development, manufacturing, and reliability organizations to identify risks, solve complex technical challenges, and drive continuous improvements in product performance, yield, and customer satisfaction! Position Overview As a Senior Product Quality and Reliability Engineer, you will be a technical leader. You will drive product excellence in quality, dependability, and yield across advanced semiconductor technologies. You will lead complex technical investigations, influence product and technology decisions, and develop innovative approaches that strengthen quality systems and business outcomes. This role provides an opportunity to have broad interpersonal impact through technical leadership, multi-functional teamwork, and strategic problem-solving. Responsibilities Lead complex investigations involving yield excursions, product deviations, and quality issues, driving root cause identification, containment actions, and sustainable corrective solutions Define product quality and reliability moni

NVIDIA has been transforming computer graphics, PC gaming, and accelerated computing for more than 25 years. It’s a unique legacy of innovation that’s fueled by great technology—and amazing people. Today, we’re tapping into the unlimited potential of AI to define the next era of computing. An era in which our GPU acts as the brains of computers, robots, and self-driving cars that can understand the world. Doing what’s never been done before takes vision, innovation, and the world’s best talent. As an NVIDIAN, you’ll be immersed in a diverse, supportive environment where everyone is inspired to do their best work. Come join the team and see how you can make a lasting impact on the world. At NVIDIA, we're not just transforming the world of computer graphics and AI; we're setting the stage for the future of autonomous driving. As a Lead Safety Architect, you will be at the forefront of our autonomous vehicle technology, ensuring its safety at scale. You will collaborate with the most innovative engineers and technologists to integrate safety measures into our latest DRIVE products. This role is paramount in achieving and exceeding NVIDIA's high safety standards, making your work both exciting and impactful! What you’ll be doing: Representing NVIDIA’s functional safety strategy and architectures to the customer Working closely with customers to understand their functional safety requirements and system architectures and feeding those back into the development teams Assisting customers to safely integrate and validate our products in their systems and vehicles Supporting customer facing safety collateral Tailoring functional safety platforms and safety analyses for strategic customers You will be working closely with safety management, solution architects, sales and technical marketing teams to deliver state of the art products

Who We Are Notion is the collaborative AI workspace where teams and agents think together . We're building one place where your knowledge, projects, meetings, and AI tools live side by side, so work is faster, clearer, and less fragmented. Millions of individuals, small teams, and large companies run their work on Notion. Notinos (our employees) are customer zero in bringing this future of work to life. We care about craft, building things that last, and the belief that great work is still fundamentally human. Our goal isn’t to ship the next feature. Each and every team of Notinos is working to set the standard for how humans work together in the AI era. From building a business’s system of record to making and managing AI agents to automating away the busy work, we care deeply about giving our customers more time for their life’s work. About the Role: Notion’s Data Foundations team builds and operates the batch and streaming infrastructure behind our product features, analytics, search, and AI experiences. We’re looking for a hands-on technical leader to shape the next generation of this platform as Notion serves larger customers, expands globally, and supports more data-intensive products. You’ll identify the highest-leverage problems, set direction, build and develop a high-performing team, and lead multi-quarter initiatives across our data lake, streaming, distributed-compute, governance, and reliability systems. You’ll stay close to critical technical decisions while creating clear ownership, growing engineers and technical leaders, and helping the team execute as one—partnering closely with Data Engineering, Data Product, Search, AI, Infrastructure, and Security. This role can be based in either San Francisco or New York City. We work from our offices on Mondays, Tuesdays and Thursdays (our Anchor Days) because we do our best thinking and building together in person. We’re looking for someone who’s excited to work alongside the team during those days. What You

Hyliion is committed to creating innovative solutions that enable clean, flexible and affordable electricity production. The Company’s primary focus is to develop distributed power generators that can operate on various fuel sources to future-proof against an ever-changing energy economy. Job Purpose The Mechanical Engineer is responsible for end-to-end hardware ownership of components and sub-systems for the KARNO generator, taking designs from CAD through prototype, test, and validation. Working across mechanical, electrical, software, and performance teams, this role designs and troubleshoots complex thermal and mechanical systems that must perform reliably across extreme operating environments and a wide range of fuels. The position exists to advance the development of Hyliion's fuel-agnostic power generation technology through hands-on, test-driven engineering and disciplined design execution. Duties and Responsibilities Own hardware components and sub-systems end-to-end—from concept through durability, manufacturability, serviceability, cost, weight, and validation—taking designs from CAD to hardware running on a test stand. Design components and sub-systems that must survive extreme thermal environments, perform across a wide range of fuels (20+), and push the boundaries of metal additive manufacturing. Create 3D models in NX and generate 2D prints with full GD&T per ASME Y14.5. Perform design checking and print review to ensure tolerances, processes, and material specifications align with Hyliion's GD&T standards (ASME Y14.5). Conduct fluid and thermal systems design and optimization. Perform structural and thermal FEA (ANSYS or equivalent). Install, calibrate, and read instrumentation for pressure, temperature, flow, strain, and acceleration in lab environments. Execute prototype build, test, and validation cycles early and often to identify and resolve issues in the lab rather than the field. Collaborate cross-functionally