Jobs in the United States

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Added 32 mins ago
DH
Secure Network Operations - Technical
DHS Headquarters
Pensacola, FL · Springfield, VA · Arlington, VA · Idaho Falls, ID · Washington, DC · Chandler, AZ · Stennis Space Center, MS
- $106,700 to $214,500 USD / year
The Department of Homeland Security (DHS) is recruiting professionals to support a range of technical roles in Secure Network Operations, including Systems Administrator, Network Engineer,…
Added 1 hour ago
Principal Engineer, Electrical
Blue Bird Brand
Fort Valley, GA
Reporting to the Senior Director of Electrical Engineering, the Principal Design Engineer, Electrical serves as a technical authority for vehicle electrical/electronic architecture,…
Added 5 hours ago
Senior DevOps
KēSTA I.T.
Remote, United States
This is a Principal engineering role on a team of about 10, including 5 in-house peers and a team in Spain. The role takes direction from the principal engineer and works in a fully remote,…
Added 10 hours ago
AT
Infrastructure Server Engineer (Top Secret)
Apex Technology, Inc.
Los Angeles, CA
- $150,000 to $250,000 USD / year
The IT Engineer (Infrastructure Server Engineer) is responsible for the design, implementation, administration, and optimization of Apex’s technology infrastructure. This role encompasses…
Added 10 hours ago
AT
IT Engineer (Active Top Secret)
Apex Technology, Inc.
Los Angeles, CA
- $150,000 to $250,000 USD / year
The IT Engineer is responsible for the design, implementation, administration, and optimization of Apex’s technology infrastructure. This role encompasses systems engineering, network…
Added 13 hours ago
Principal Systems Engineer
2HB Incorporated
Annapolis Junction, MD
2HB Incorporated is seeking a Principal Systems Engineer in order to support its government customer in Annapolis Junction, MD.
Added 1 day ago
Principal Engineer, Model Performance
Runware
Remote, United States
As Principal Engineer, Model Performance, you will own how fast and how cheaply every model on Runware runs: diffusion and video generation, speech, 3D and LLMs, across 400,000+ models and…
Added 1 day ago
Solutions Engineer
Aflac, Incorporated
GA
8+ years of solutions-based data processing experience with a concentration in systems engineering, operating systems and network design/configuration and management
Added 1 day ago
Infrastructure Engineer II
Topgolf Payroll Services
United States
The purpose of the Engineer II role is delivery of technology products that enable extraordinary experiences. They do so by transforming business needs into technology solutions, testing,…
Added 1 day ago
Senior Communication Architect and Engineer
The Aerospace Corporation
El Segundo, CA
…sensors, radar, artificial intelligence (AI), and advanced data network domains. We boldly advance technology through our research and development and then forward to demonstration and…
Added 1 day ago
CH
Principal Systems Engineer
Carestream Health
ROCHESTER, NY
- $119,200 to $158,900 USD / year
…other applications-all backed by a global service and support network. Carestream's diagnostic imaging technology systems are at work in 90 percent of hospitals worldwide. At Carestream, we…
Added 2 days ago
SkillBridge - Network / Principal Network Communications Engineer
Northrop Grumman
Ellsworth AFB, SD
Northrop Grumman Aeronautics Systems has opening for an Network and Principal Network Communications Engineer to join our team of qualified, diverse individuals within our Ground Systems…
Added 2 days ago
Network Engineer / Principal Network Engineer
Northrop Grumman
Baltimore, MD
Northrop Grumman’s Corporate Sector's Chief Information & Digital Office (CIDO) is seeking a Network Engineer / Principal Network Engineer to support the IT Infrastructure & Operations…
Added 2 days ago
Sr. Engineer Firmware Engineering XII
Vertiv
United States
The Sr. Firmware Engineer will develop, sustain, and provide technical ownership of embedded firmware solutions for Single Phase UPS products. The role focuses on real-time DSP/MCU firmware…
Added 2 days ago
O
Principal Core Infrastructure Engineer
Oracle
Austin, TX
- $114,600 to $234,600 USD / year
Oracle Cloud Infrastructure (OCI) is hiring a Principal Core Infrastructure Engineer to join the Next Gen Network Observability team. Help build cloud-scale intelligence systems that enable…
Added 2 days ago
Principal / Sr. Principal Engineer Software - Cloud & Applications
CORP-Corporate Office
United States
Northrop Grumman Aeronautics Systems has an opening for a Principal or Sr. Principal Software Engineer - Cloud and Applications to join our team of qualified, diverse individuals. This…
Added 2 days ago
Network Engineer - Level 3
CORP-Corporate Office
United States
The TASD contract is seeking a Principal Network Engineer – Level 3 to configure, maintain, patch, STIG, troubleshoot and install network related hardware to include devices such as HP…
Added 2 days ago
Staff Design Evaluation Engineer
Analog Devices Inc.
NC
The Power Control team is seeking a highly experienced Staff Design Evaluation Engineer to support our Datacenter and Energy Business Unit at ADI's Research Triangle Park location in North…
Added 2 days ago
Principal Network Engineer, AI Infrastructure (Starshield)
SpaceX
Washington, DC
As a Principal Network Engineer you will drive the operation, build and deployment of the Starshield data center network, which supports critical national security missions. You and your…
Added 2 days ago
Principal / Sr. Principal Engineer Software - Cloud & Applications
Northrop Grumman
El Segundo
Northrop Grumman Aeronautics Systems has an opening for a Principal or Sr. Principal Software Engineer - Cloud and Applications to join our team of qualified, diverse individuals. This…
Added 2 days ago
Network Engineer - Level 3
Northrop Grumman
Colorado Springs
The TASD contract is seeking a Principal Network Engineer – Level 3 to configure, maintain, patch, STIG, troubleshoot and install network related hardware to include devices such as HP…
Added 2 days ago
Systems Engineer- Vehicle Function Definition
PACCAR
Denton, TX
…information technology, and distributes truck parts related to its principal…
Added 2 days ago
Principal FPGA Design Engineer
Advanced Micro Devices, Inc
Santa Clara, CA
AMD's Network Technology Solutions Group (NTSG) is seeking a Principal FPGA system engineer to provide technical leadership in the architecture, design, development, integration, and…
Added 2 days ago
ESS, Principal Software & Data Engineer
SK Battery America
Troy, MI
The Principal Software & Data Engineer will work closely with the Head of EMS Engineering, Chief Architect, Controls Engineers, Network Engineering, DevOps, and broader product and R&D…
Added 2 days ago
Hardware R&D Test Engineer
Emtech
Seattle, WA
Medical, Dental & Vision - Medical through 90 Degree Benefits (First Health Network), Principal PPO dental, and Principal/VSP vision, starting the first of the month after 60 days.

Crusoe

Principal Software Engineer

San Francisco, CA, United States

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Job details

Posting language: English
Posted: Nov 6, 2026

Original job description

Crusoe is on a mission to accelerate the abundance of energy and intelligence. As the only vertically integrated AI infrastructure company built from the ground up, we own and operate each layer of the stack - from electrons to tokens - to power the world's most ambitious AI workloads. When you join Crusoe, you join a team that is building the future, faster.

We're in the midst of the greatest industrial revolution of our time. The demand for AI compute is boundless, and power is a bottleneck. We're solving that - with an energy-first approach that makes AI infrastructure better for the world and faster for the people innovating with AI.

We're looking for problem-solving, opportunity-finding teammates with a sense of urgency, who believe in the scale of our ambition and thrive on a path not fully paved - people who want to grow their careers alongside a team of experts across energy, manufacturing, data center construction, and cloud services.

If you want to do the most meaningful work of your career, help our customers and partners advance their AI strategies, and be part of a high-performing team that believes in each other, come build with us at Crusoe.

ABOUT THIS ROLE

As a Principal Software Engineer for Infrastructure, you will partner with teams across the company to help shape the technical direction of the compute, storage, and networking platforms that power Crusoe’s AI-first cloud. This is a high-leverage leadership role that spans the full infrastructure stack: you will work alongside engineers and stakeholders on the systems that help massive GPU clusters run AI and HPC workloads at extreme throughput, low latency, and high reliability. Your work spans the Linux kernel, hypervisors and virtualization, distributed storage, network fabrics, and the control planes that tie them together.

You will be a trusted technical partner across the infrastructure stack, helping guide architecture decisions and mentoring engineers to raise our collective technical bar. You will look at the whole system alongside the teams who own each layer: how a storage tier, a scheduler, and a network fabric interact under a multi-node training job, and where the real bottleneck sits. You will collaborate closely with Product, Hardware, and Infrastructure teams to build a reliable, scalable platform together that aligns with Crusoe’s mission to innovate sustainably. This is a full-time position.

WHAT YOU’LL BE WORKING ON

Infrastructure Strategy: Partner with engineering, product, and leadership to help shape the long-term direction for compute, storage, and networking, and to turn that direction into practical plans and milestones.
Architecture & Design: Collaborate with teams on architecture reviews, design documents, and code reviews for critical infrastructure components and services across all three domains.
Compute & Virtualization: Work with compute teams on the virtualization and orchestration layers that deliver bare-metal-class performance to GPU workloads, including hypervisor tuning, SR-IOV, vDPA, virtio, device passthrough, and NUMA- and topology-aware scheduling.
Storage Systems: Work with storage teams on high-throughput, low-latency storage for training and inference pipelines, including distributed block, file, and object storage, NVMe and NVMe-oF, RDMA-based data paths, and checkpointing and data-loading performance.
Networking & Fabric: Partner with networking teams on architectures for GPU-to-GPU fabrics, high-speed Ethernet, and specialized AI clusters, using technologies such as XDP, eBPF, DPDK, OVS/OVN, BGP, EVPN, and VXLAN.
Kernel & Driver Work: Contribute to Linux kernel modules and high-performance drivers across the network, storage, and device stack.
Hardware Integration: Work with Hardware teams on accelerators and offload devices, including GPUs, SmartNICs, DPUs, IPUs, and NVMe, from qualification through bring-up of new platforms.
Cross-Stack Performance & Reliability: Team up with on-call, SRE, and domain engineers to troubleshoot complex production issues that cross compute, storage, and network boundaries, and to improve performance, observability, capacity planning, and failure-domain design.
Technology Evaluation: Explore emerging infrastructure technologies with the team, contribute to open-source projects where strategically relevant, and share learnings with the broader organization.
Mentorship & Collaboration: Partner with internal stakeholders on end-to-end features, and mentor and support engineers across teams to foster a culture of engineering excellence.

WHAT YOU’LL BRING TO THE TEAM

Large-Scale Infrastructure Mastery: 10+ years of experience building and operating large-scale infrastructure systems in production, ideally within cloud or hyperscale data center environments.
Cross-Domain Breadth: Hands-on experience across compute, storage, and networking, and a track record of solving problems that cross domain boundaries.
Systems Programming Excellence: Strong systems programming skills in C, C++, Rust, or Go, with experience working on performance-critical services and control planes.
Linux Internals Depth: Extensive knowledge of the Linux kernel architecture, memory management, scheduler, I/O and network stacks, and device driver development.
Virtualization & Compute Literacy: Experience with KVM/QEMU or similar hypervisors, container runtimes, and orchestration platforms such as Kubernetes, plus an understanding of GPU, CPU, and NUMA topology and its effect on workload performance.
Storage Literacy: Familiarity with distributed storage architectures (block, file, or object), NVMe/NVMe-oF, RDMA, and the consistency, durability, and performance tradeoffs involved.
Network & Fabric Literacy: Familiarity with data center fabrics (e.g., Spine-Leaf, BGP, EVPN, VXLAN), network virtualization tools such as OVS or OVN, and high-speed packet processing technologies such as XDP, eBPF, or DPDK.
Accelerator Knowledge: Familiarity with SmartNICs, DPUs, and accelerators, such as NVIDIA ConnectX-6/7 and BlueField-3 or Intel IPUs.
Production Debugging: Experience working with others to diagnose complex issues across the full stack, from hardware and firmware through the kernel to control-plane software.
Strategic Influence: A proven track record of leading through influence, with excellent written communication skills and a strong mentoring mindset.
Education: A Bachelor’s degree in Computer Science, Computer Engineering, or a related analytical field (or equivalent professional experience).

BONUS POINTS

Open-Source Contributions: Active contributions to projects such as the Linux kernel, KVM/QEMU, Kubernetes, Ceph, OVS, OVN, Cilium, or Multus.
Orchestration & Automation Expertise: Experience with infrastructure automation, fleet management, or complex orchestration tooling.
GPU Training at Scale: Prior experience building compute, storage, or networking stacks for multi-node GPU training at scale.
Hardware Co-Design: Experience working with hardware teams on platform design, qualification, and firmware-to-software integration.

Benefits:

Competitive compensation and equity packages
Restricted Stock Units
Paid time off, paid holidays & leave of absence programs
Comprehensive health, dental & vision insurance
Employer contributions to HSA account
Paid parental leave
Paid life insurance, short-term and long-term disability
Professional development & tuition reimbursement
Mental health & wellness support
Commuter benefits (parking & transit)
Cell phone stipend
401(k) Retirement plan with company match up to 4% of salary
Volunteer time off
Global travel insurance & emergency assistance
Daily meals allowance
Additional perks & programs specific to location

Compensation Range

Compensation will be paid in the range of up to $285,000 - $335,000 + Bonus. Restricted Stock Units are included in all offers. Compensation to be determined by the applicant's knowledge, education, and abilities, as well as internal equity and alignment with market data.

Crusoe is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, disability, genetic information, pregnancy, citizenship, marital status, sex/gender, sexual preference/ orientation, gender identity, age, veteran status, national origin, or any other status protected by law or regulation.

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More about this job

Skills

Linux
Coaching
Leadership
Architectural design
Scheduling
BGP
Troubleshoot
Collaboration
C
C++
Rust
Go
Kubernetes
Debugging
Firmware
Communication skills
Computer science
Computer engineering

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