Senior Site Reliability Engineer, Crusoe Energy Systems
Compute
$183-210k
+ Restricted Stock Units + Bonus
Crusoe offers sponsorship
Renewable-powered AI infrastructure
Open for applications
Renewable-powered AI infrastructure
501-1000 employees
Open for applications
$183-210k
+ Restricted Stock Units + Bonus
Crusoe offers sponsorship
501-1000 employees
Company mission
To accelerate the abundance of energy and intelligence.
Role
Who you are
- 5+ years of professional experience in Compute SRE, Linux system engineering, or compute infrastructure roles
- Strong proficiency in Linux kernel internals, with exposure to scheduler, memory allocation, and driver subsystems
- Experience with virtualization architectures and technologies such as KVM, Xen, QEMU, or VMware
- Familiarity with SmartNICs/DPUs (e.g., NVIDIA CX6/7, BlueField-3) and kernel bypass techniques
- Expert-level skills in at least one programming language: C, Go, or Rust
- Experience with system-level debugging, including kdump, kexec, and kernel panic analysis
- Proficiency in Infrastructure as Code tooling and CI/CD practices for bare-metal or cloud infrastructure
- Strong understanding of compute scheduling, resource management, and high-throughput networking
What the job involves
- At Crusoe, we are building the most sustainable, AI-first cloud infrastructure, and our Compute-focused Site Reliability Engineers are the backbone of that mission
- This role is centered on supporting virtualization, hypervisor, and kernel-level performance for Crusoe’s compute infrastructure
- You’ll play a vital role in deploying and optimizing bare-metal and virtualized compute platforms, ensuring performance, security, and scale for modern AI and HPC workloads
- In this role, you will develop automation and observability tools to monitor Crusoe’s compute infrastructure, spanning from the kernel to orchestration layers
- You will support and scale the company’s virtualization stack, including technologies such as KVM, QEMU, and other hypervisors
- Collaborating with Linux kernel and hardware teams, you’ll help identify and resolve performance bottlenecks, driver issues, and optimize hardware offloads
- A key focus will be on optimizing performance for AI and HPC workloads across CPU, GPU, and DPU/NIC resources
- You will participate in root cause analysis for kernel crashes, hardware-software integration problems, and performance regressions, while also integrating hypervisor-level enhancements to improve guest VM reliability and workload isolation
- The role involves tuning kernel subsystems such as the process scheduler, NUMA configuration, memory management, and interrupt handling
- Additionally, you will work closely with platform teams to implement and validate support for emerging compute hardware, including SmartNICs, BlueField devices, and TPUs
Our take
Crusoe is tackling one of the biggest challenges facing the digital age: the enormous energy demand of data centres and AI infrastructure. As AI models grow more powerful, they require immense computing power (and therefor electricity) to train and operate. This surge in energy use has put some pressure on power grids, driven up costs, and raised environmental concerns. Crusoe is on a mission to make this process more sustainable by finding smarter, cleaner, and more efficient ways to power the data centres that drive modern computing.
The company started out by putting wasted energy to work. Originally known as Crusoe Energy, it captured natural gas that would otherwise be burned off ("flared") at remote oil sites and used it to power modular data centres. Today, Crusoe has evolved into a major player in AI infrastructure, designing and operating large-scale data centres near renewable or stranded energy sources. It's now one of a handful of "neocloud" companies (next-generation cloud providers focused on flexible, efficient computing for AI workloads). And its facilities are helping tech giants like OpenAI handle the massive computing requirements of training advanced AI models.
Recently, Crusoe has attracted some huge investor attention, tripling its valuation to over $10B and raising $1.4B in its latest funding round. It's building OpenAI's first major US data centre campus and even experimenting with bold new frontiers. In partnership with Starcloud, Crusoe plans to deploy the world's first space-based cloud computing infrastructure, powered by solar energy and orbiting the Earth by 2027. If successful, this could redefine how and where computing happens, opening up a cleaner, virtually limitless source of energy for AI's next generation.
Steph
Company Specialist at Welcome to the Jungle
Insights
31% employee growth in 12 months
Company
Funding (last 2 of 6 rounds)
Oct 2025
$1.4bn
SERIES E
Dec 2024
$600m
SERIES D
Total funding: $2.5bn
Company benefits
- Health & wellbeing: Comprehensive health benefits designed to support your overall wellness
- Time away: Paid time off for vacations, family bonding, and unexpected needs
- 401(k) match: Build your financial future with our 401(k) matching program
- Mental wellness: Resources and support for your emotional wellbeing and navigating life's challenges
Company HQ
LoDo, Denver, CO
Leadership
Cully Cavness
(Co-Founder, COO & President)Began their career as an Energy Infrastructure Research Fellow before spending 3 years as a Business Development Manager at Recurrent Engineering and serving as CFO of Sword & Plough. They left their role as VP of Highlands Natural Resources to co-found Crusoe Energy Systems.
Chase Lochmiller
(Co-Founder & CEO)Prior to co-founding Crusoe in 2018, Chase was a General Partner at Polychain Capital, a Quantitative Trade at Jump Trading Group, and a Managing Director of Algorithmic Trading at KCG Holdings.
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