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Added 1 hour ago
Senior Developer - Full Stack
Cydcor
Remote, United States
…Python, PostgreSQL, and AWS. We are looking for a seasoned engineer who is excellent at engineering fundamentals first and tied to no single platform second - someone who can operate across…
Added 2 hours ago
A
Principal Software Engineering - Reliability and FinOps Engineer
AT&T
Middletown, NJ
- $155,400 to $261,100 USD / year
As a Principal System Engineer, you will serve as a senior technical leader across FinOps, cloud optimization, system reliability, and AI-driven automation. You will shape and execute…
Added 6 hours ago
Principal Site Reliability Engineer (Vehicle Engineering)
SpaceX
Bastrop, TX
SpaceX HPC is a shared compute platform used across the company - vehicle and structures simulation, machine learning, AI inference, and more. We support every program at SpaceX to design…
Added 10 hours ago
A
Principal Software Engineering - Reliability and FinOps Engineer
AT&T
Bothell, WA
- $155,400 to $261,100 USD / year
As a Principal System Engineer, you will serve as a senior technical leader across FinOps, cloud optimization, system reliability, and AI-driven automation. You will shape and execute…
Added 19 hours ago
M
Principal Design Verification Engineer
Microsoft
NC · TX · Raleigh, NC · Austin, TX · Raleigh · Austin
- $142,800 to $304,200 USD / year
We are looking for a Principal Design Verification Engineer to join the team.
Added 19 hours ago
M
Senior Principal Verification Engineer
Microsoft
NC · TX · Raleigh, NC · Austin, TX · Raleigh · Austin
- $165,600 to $331,200 USD / year
We are looking for a Senior Principal Verification Engineer to join the team to support our mission and culture.
Added 21 hours ago
Sr. Solutions Architect/Sales Engineer-AI Infrastructure (GPU) -West Coast
Liqid
Remote, United States
The right person can whiteboard a GPU inference cluster with a customer’s principal engineer, run a disciplined PoC against agreed success criteria, and translate the technical outcome into…
Added 21 hours ago
Sr. Solutions Architect/Sales Engineer-AI Infrastructure (GPU) -West Coast
Liqid
Remote, United States
The right person can whiteboard a GPU inference cluster with a customer’s principal engineer, run a disciplined PoC against agreed success criteria, and translate the technical outcome into…
Added 21 hours 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
Principal Software Engineer, E2E Performance and Goodput - CSP Engagements
NVIDIA USA
Remote, United States
We're looking for a Principal Engineer to join our CSP Engagements team as the technical focal point for end-to-end performance, working directly with engineering teams of key…
Added 1 day ago
Field CTO - AI Infrastructure & Neocloud, Americas (Bay Area-based)
WEKA
Campbell, CA
This role is distinct from senior sales engineering. You will operate as a peer to customer CTOs and principal engineers, bring an informed perspective on the direction of GPU…
Added 1 day ago
M
Principal Software Engineer
Microsoft
United States
- $165,600 to $331,200 USD / year
Knowledge of InfiniBand, Ethernet, NVLink, host and accelerator telemetry, and the dependencies among compute, networking, storage, and facility systems.
Added 1 day ago
M
Senior Principal Design Verification Engineer
Microsoft
WA · CA · TX · NC · OR · Redmond, WA · Mountain View, CA · Austin, TX · Raleigh, NC · Hillsboro, OR · Redmond · Mountain View · Austin · Raleigh · Hillsboro
- $165,600 to $331,200 USD / year
As a Senior Principal Design Verification Engineer on the AISiE SoC Design Verification team, you will architect and drive complex pre-silicon verification, including SoC security…
Added 2 days ago
Staff Databricks Platform Engineer
Southern Glazer's Wine and Spirits
Dallas, TX
The Staff Databricks Platform Engineer owns the engineering of Southern Glazer's Databricks lakehouse as a product: the workspaces, governance model, compute fabric, and automation that…
Added 2 days ago
UG
Oracle Exadata DBA - Remote
UnitedHealth Group
New York, NY
- $112,700 to $193,200 USD / year
Join the NY APD and Virginia EDW Analytics Operations and Maintenance team within Optum Technology as a Principal Data Engineer. In this role, you will lead the architecture, design, and…
Added 2 days ago
FE
Platform Engineering Principal
Federal Express Corporation
Plano, TX
- $9,719.96 to $13,812.57 USD / month
…scalability of complex analytical applications. The Platform Engineer Principal identifies various patterns for data acquisition, processing, and management with respect to differing data…
Added 2 days ago
Cloud Architect-Forward Deployed Engineer (FDE)
Oracle
St. Louis, MO
Oracle Government Defense & Intelligence has an exciting opportunity for a Principal / Master Principal Cloud Architect-Forward Deployed Engineer (FDE)
Added 2 days ago
UG
Oracle Exadata DBA - Remote
UnitedHealth Group
NY
- $112,700 to $193,200 USD / year
Join the NY APD and Virginia EDW Analytics Operations and Maintenance team within Optum Technology as a Principal Data Engineer. In this role, you will lead the architecture, design, and…
Added 2 days ago
O
Cloud Architect-Forward Deployed Engineer (FDE)
Oracle
St. Louis, MO
- $118,700 to $194,400 USD / year
Oracle Government Defense & Intelligence has an exciting opportunity for a Principal / Master Principal Cloud Architect-Forward Deployed Engineer (FDE)
Added 2 days ago
Principal SoC Development Platform Engineer
Cirrus Logic
Austin, TX
We are seeking an exceptional Principal SoC Development Platform Engineer to architect and build next-generation, AI-native software development environments for advanced semiconductor…
Added 2 days ago
Senior System Safety Engineer
AeroVect
Remote, United States
- Proven ability to work under the technical mentorship of a Principal Safety Engineer in a high-velocity agile engineering team.
Added 2 days ago
Principal Site Reliability Engineer, Unix Systems
Synopsys
Sunnyvale, CA
Support grid and HPC infrastructure running workload schedulers like IBM Spectrum LSF, Slurm, PBS Pro, or Grid Engine for compute intensive engineering jobs
Added 2 days ago
Principal Software Engineer
Crusoe
San Francisco, CA
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…
Added 2 days ago
Cybersecurity AI Principal Engineer
Wells Fargo
MENLO PARK, CA
Wells Fargo is seeking a Principal Engineer as part of the Cybersecurity AI team to help design and evolve VoltAIre , a Cyber AI platform intended to provide secure, highly available,…
Added 2 days ago
Distinguished Engineer - Distinguished Engineer, Data Foundation
Intuit
MOUNTAIN VIEW, CA
A record of setting technical direction at company scale: prior work as a Distinguished Engineer, Fellow, Principal Architect, or equivalent, with artifacts (RFCs, ADRs, standards) that…

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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