Jobs in the United States

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Added 1 min ago
Sr Principal Engineer
Baxter Healthcare Corporation
Cleveland, MS
…positive impact on people around the world. As a Principal Engineer, you will provide technical leadership and engineering support for facilities, utilities, and building infrastructure…
Added 1 min ago
Air Force GPS Engineer Cyber Security
InfiniSource Consulting Solutions
Bethesda, MD
We are a cutting-edge cybersecurity firm dedicated to protecting critical infrastructure, aerospace systems, maritime navigation, and enterprise location-based services against advanced…
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GPS Engineer Cyber Security
InfiniSource Consulting Solutions
Atlantic City, NJ
We are a cutting-edge cybersecurity firm dedicated to protecting critical infrastructure, aerospace systems, maritime navigation, and enterprise location-based services against advanced…
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DADMS Analyst
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…data to resolve emerging problems at scale. As an experienced systems engineer and analytics professional, you thrive on using your critical-thinking skills to dig deep into complex data…
Added 1 min ago
Software Development Engineer II, Amazon Foundational Security Services
Amazon.com Services LLC
Seattle, WA
…Amazon’s massive scale. We are looking for a Software Development Engineer to help innovate and build new services from the ground up that will make security and innovation simultaneous for…
Added 1 min ago
Senior Software Engineer, AI & Strategic Partner Engineering
Amazon Development Center U.S., Inc.
Seattle, WA
…operated at scale. We're hiring a Senior Software Development Engineer to lead that charge, architecting AI-driven solutions that reshape how partners like SAP run mission-critical…
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Event Systems Engineer, Event Productions (EP)
Amazon.com Services LLC
Bellevue, WA · Seattle, WA
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Software Development Engineer - ML, Prime Video Personalization, Harmonia Optimizer
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We are looking for a Software Development Engineer who is results-oriented, data driven, innovative and passionate at creating new comprehensive customer engagement services/solutions.…
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Software Development Engineer, PV Ads GEM
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…experience owning and maintaining highly-available, mission-critical systems. Experience in Advertising domain is a plus. You will need to have strong problem-solving and technical…
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Software Dev Engineer II, Prime Video Ads
Amazon.com Services LLC
New York, NY
We are looking for a passionate and talented iOS Software Development Engineer who has experience building world-class mobile apps. You will be responsible for developing innovative…
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Senior Software Engineer, AI & Strategic Partner Engineering
Amazon Web Services, Inc.
Santa Clara, CA · Seattle, WA
…operated at scale. We're hiring a Senior Software Development Engineer to lead that charge, architecting AI-driven solutions that reshape how partners like SAP run mission-critical…
Added 1 min ago
Control Systems Engineer – Rapid Response Team, OMHS Field Technical Support
Amazon.com Services LLC
Richardson, TX · McAllen, TX · Phoenix, AZ · Albuquerque, NM · San Diego, CA · Dallas, TX
The Field Control Systems Engineer provides mechatronics support for Amazon's warehouse automation and material handling equipment, covering the electrical, controls, and mechanical layers.…
Added 1 min ago
Customer Quality Engineer, Cloud AI Infrastructure
Google
Austin, TX
Bachelor's degree in Computer Science, Management Information Systems, or other technical field, or equivalent practical experience.
Added 2 mins ago
Drainage Design Segment Manager
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Atlanta, GA
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Systems Engineer - Sustainment
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Ensuring effective requirements integration across operational space and ground, hardware and software, and all other aspects of systems and organizations for control segment capabilities
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Senior Software Engineer, Release Channel
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3 years of experience with developing large-scale infrastructure, distributed systems or networks, or experience with compute technologies or storage.
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Field Application Engineer, Cloud AI Infrastructure
Google
Kirkland, WA · Sunnyvale, CA
Bachelor's degree in Computer Science, Management Information Systems, a related technical field, or equivalent practical experience.
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Structural Project Engineer
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Launch your structural engineering career with DCI Engineers in our Portland, OR office. As a Structural Project Engineer, you’ll work on diverse building projects, collaborate with…
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Automation Engineer (Ansible)
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Baltimore, MD
CGI Federal is seeking a Senior Automation Engineer with strong expertise in Ansible Automation Platform, Infrastructure as Code (IaC), and enterprise systems administration to support a…
Added 4 mins ago
CC
Manager of Project Delivery & Operations
Central Coast Community Energy
Monterey, CA
- $12,745.11 to $19,737.66 USD / month
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Applications Engineer - Pump & Fluid Systems
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…this position are used in manufacturing facilities, process systems, and municipal…
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Reliability Studies Engineer
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Houston, TX
Saber Power Services is seeking a qualified and motivated Reliability Study Engineer to join our engineering team. The successful candidate will be responsible for performing reliability,…
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Lead AI Process Engineer
Employment Application
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This work is hard in the best way. It’s safety-critical, runs around the clock, and spans many systems, teams, and stakeholder groups. If you want your redesigns tested against real…
Added 5 mins ago
Software Test, Engineer II
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Join our team at Thermo Fisher Scientific as a Software Test Engineer II and contribute to ensuring the quality and reliability of our advanced software solutions. You'll work on…
Added 5 mins ago
Q
Junior RF Test Engineer
Quartermaster
Columbia, MD · Arlington, VA
- $140,000 to $155,000 USD / year
Job Description: Quartermaster is hiring a hands-on, versatile, and curious Junior Test Engineer for our new RF Test Lab in Columbia, Maryland. If you love working with Raspberry Pis,…

Radiant

HPC Infrastructure Site Reliability Engineer

San Francisco, CA, United States

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Job details

Posting language: English
Posted: Jun 5, 2026

Original job description

About Us

We’re a fast-growing GPU-as-a-Service provider, delivering scalable, high-performance compute infrastructure purpose-built for AI and HPC workloads. Operating across global data centres, we run mission-critical environments where uptime, throughput, and ultra-low latency are non-negotiable.

Role Overview

We are looking for a senior Infrastructure Site Reliability Engineer with deep experience operating large-scale distributed systems and recent hands-on expertise in high-performance computing (HPC) and AI infrastructure. This is an operations-first SRE role, working in a 24/7/365 on-call environment, responsible for ensuring reliability, performance, and continuous improvement of mission-critical infrastructure. This role sits within a cross-functional organisation spanning network engineering, infrastructure SRE, Platform SRE, infrastructure tooling engineers (software) and data centre operations.

The ideal candidate has progressed through large-scale, globally distributed or multi-site infrastructure environments and has more recently specialised in GPU-accelerated HPC systems. This role provides exposure to the latest high-density AI compute platforms, including next-generation GPU infrastructure at significant scale. You will bring strong breadth across bare metal, networking, storage, virtualisation, and orchestration, alongside deep HPC experience including NVIDIA GPU ecosystems, RDMA networking (RoCE and InfiniBand), and performance validation and benchmarking. Strong Linux and distributed systems expertise is essential.

Alongside operational ownership, this is a deeply technical Infrastructure SRE role centred on advanced operational troubleshooting and performance evaluation across large-scale HPC systems. You will investigate complex, cross-layer issues spanning GPU compute, networking, storage, and orchestration, building a clear understanding of system behaviour under real production AI and HPC workloads.

A key responsibility is performance evaluation, testing, and operational acceptance of new HPC environments, ensuring platforms meet defined reliability, scalability, and performance expectations before entering production. You will work across hardware, network, and software layers to validate readiness of high-density GPU infrastructure and support safe, predictable deployment at scale.

You will also play a central role in continuous service improvement (CSI) - reducing operational toil, increasing automation, and improving reliability, consistency, and operational efficiency across the platform. This includes strengthening observability, refining operational workflows, and eliminating repetitive or failure-prone processes.

Over time, you will help shape future infrastructure design and deployment approaches, feeding operational insight back into infrastructure engineering decisions and ensuring production learnings directly influence next-generation HPC platform evolution.

What’s in It for You

Join a team operating some of the world’s most advanced high-performance computing infrastructure. As a HPC Infrastructure SRE, you’ll work hands-on with cutting-edge GPU and CPU platforms - including the latest NVIDIA architectures - powering dense, large-scale compute environments used for AI, machine learning, and next-generation workloads.

This is an opportunity to build expertise at the forefront of modern infrastructure, where reliability, scale, and performance matter every day. You’ll collaborate with experienced engineers across a globally distributed organisation that values openness, inclusion, technical excellence, and continuous learning.

We move quickly, solve meaningful challenges, and give people the space to make an impact. If you thrive in fast-paced environments, enjoy working with advanced technology, and want to help shape the future of high-performance compute, you’ll find both challenge and opportunity here.

You can also expect:

Exposure to industry-leading GPU and AI infrastructure
Opportunities to grow alongside a rapidly scaling global business
A collaborative, inclusive, and supportive engineering culture
Real ownership and the ability to influence operational excellence
Work that sits at the intersection of people, performance, and technology
A modern, flexible, globally connected workplace with ambitious goals
Key Responsibilities
Operate and improve high-density AI/HPC infrastructure in a 24/7 production environment
Participate in a 24x7x365 on-call rotation, supporting mission-critical systems and incident response
Troubleshoot complex issues across compute, networking, storage, and orchestration layers in GPU-accelerated environments
Lead performance evaluation, testing, and operational acceptance of new HPC infrastructure before production release
Drive continuous service improvement (CSI), reducing toil through automation, tooling, and process refinement
Build and maintain infrastructure automation and tooling (IaC and scripting) to improve reliability and operational efficiency
Optimise Linux systems for performance, including kernel, BIOS/firmware, and storage tuning for HPC workloads
Configure and operate bare-metal infrastructure using IPMI, iLO, iDRAC, Redfish, and related tooling
Partner with infrastructure tooling and observability teams to improve telemetry, alerting, and system visibility at scale
Own ITIL-aligned processes across Incident, Major Incident, Problem, and Change Management, ensuring strong execution and continuous improvement
Lead root cause analysis and ensure corrective actions are implemented and automated where possible
Play a key role in designing and delivering future HPC cluster and site builds, shaping global consistency and operational standards
Collaborate closely with Platform Engineering, Network Engineering, Infrastructure Tooling, and Data Centre Operations to improve reliability and deployment quality
Feed operational insight back into infrastructure design to influence next-generation HPC platform evolution
Mentor engineers and act as a technical authority for operational best practices across teams
Communicate clearly with technical and non-technical stakeholders, translating complex issues into actionable outcomes
Uphold a culture of: do, document, automate
Essential Skills & Experience
8+ years experience in Site Reliability Engineering, Infrastructure Engineering, or similar roles in large-scale distributed production environments operating a 24/7 support model
2–3+ years recent experience in HPC and/or AI infrastructure, including GPU-based compute environments at scale
Strong Linux expertise (preferably Ubuntu), including deep systems administration and production troubleshooting
Proven experience in performance tuning across compute systems, including kernel, BIOS/firmware, and storage subsystem optimisation
Strong hands-on experience with bare-metal infrastructure and out-of-band management tooling (IPMI, iLo, iDRAC, Redfish or equivalent)
Solid networking fundamentals including TCP/IP, DNS, DHCP, VLANs, routing, and switching, with exposure to high-performance networking environments
Exposure to NVIDIA GPU ecosystems, including CUDA-based workloads and GPU-accelerated compute environments, including the NVIDIA AI reference architecture.
Familiarity with high-performance networking technologies such as InfiniBand and RoCE
Strong experience with infrastructure automation and scripting (e.g. Bash, Python, Ansible or similar IaC/tooling approaches)
Understanding of observability principles and practical use of monitoring and telemetry systems (e.g. Prometheus, Grafana or equivalents)
Understanding of workload schedulers and running workloads across multiple systems in parallel.
Practical experience with at least one parallel storage platform.
Experience working in ITIL-aligned environments, including Incident, Major Incident, Problem, and Change Management
Strong troubleshooting skills in high-pressure operational environments, with a track record of incident ownership and resolution
Strong communication skills with the ability to work across engineering teams and interface with non-technical stakeholders
Ability and willingness to collaborate closely with Platform SRE teams, including exposure to and learning of Kubernetes-based orchestration environments (not a core requirement)
Experience contributing to or influencing infrastructure design, reliability improvements, or operational best practices

Bonus / Highly Desirable:

Deep experience with HPC workloads and GPU-accelerated infrastructure at scale
Experience with InfiniBand, RoCE, or other HPC-grade networking fabrics in production environments
Experience with HPC benchmarking, validation, or performance testing (e.g. linpac, fio, NCCL, ibdiagnet)
Exposure to large-scale multi-site or global infrastructure deployments

Preferred Qualifications

Bachelor or Masters Level degree in Computer Science, Engineering or related field, or equivalent ‘on-the-job’ experience.
LPIC Certifications
ITIL Foundation level qualification or equivalent experience

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Jobs in the United States