(Senior) Infrastructure Engineer in London

(Senior) Infrastructure Engineer in London

London Full-Time 60000 - 80000 £ / year (est.) Home office (partial)
Nscale

At a Glance

  • Tasks: Design and improve infrastructure for cutting-edge AI technology.
  • Company: Join Nscale, a leader in GPU cloud for AI innovation.
  • Benefits: Competitive pay, bonuses, equity, and flexible work environment.
  • Other info: Dynamic growth opportunities and a supportive, inclusive culture.
  • Why this job: Shape the future of AI infrastructure and make a real impact.
  • Qualifications: Strong skills in Python, Linux, and infrastructure management.

The predicted salary is between 60000 - 80000 £ per year.

About Nscale

Nscale is the GPU cloud engineered for AI. We provide cost-effective, high-performance infrastructure for AI start-ups and large enterprise customers. Nscale enables AI-focused companies to achieve superior results by reducing the complexity of AI development. Our GPU cloud bolsters technical capabilities and directly supports strategic business outcomes, including cost management, rapid innovation, and environmental responsibility. We thrive on a culture of relentless innovation, ownership, and accountability, where every team member takes pride in their work and drives it with excellence and urgency. As an Nscaler, you’ll build trust through openness and transparency, where everyone is inspired to do their best work. If you join our team, you’ll be contributing to building the technology that powers the future.

About the Role

We’re hiring an Infrastructure Engineer to design, implement, operate, and continuously improve the infrastructure platforms that support both internal and customer-facing services at Nscale. This role sits within the Operational Engineering team in Engineering, where you’ll work across the infrastructure stack below the hypervisor with a focus on Linux, OpenStack, storage systems, Proxmox, DNS, DHCP, and infrastructure automation. You’ll collaborate closely with internal teams to ensure infrastructure meets performance, availability, and security requirements, while also serving as a 3rd/4th line escalation point for complex issues. Your work will directly support the reliability, scalability, automation, and security of the platforms that power Nscale’s GPU cloud. This is a high-impact role for someone who wants to shape core infrastructure, improve operational excellence, and bring deep technical expertise to both delivery and ongoing evolution of critical systems.

What you'll be doing

  • Infrastructure Design & Operations
    • Implement infrastructure components that underpin internal and customer-facing services.
    • Operate critical infrastructure layers below the hypervisor with a focus on stability and performance.
    • Maintain essential services such as DNS, DHCP, and configuration management tooling.
    • Design scalable and resilient infrastructure platforms across OpenStack, Proxmox, Ceph, and core supporting services.
  • Automation & Continuous Improvement
    • Improve automation for provisioning, monitoring, patching, and recovery.
    • Use infrastructure-as-code and configuration management tools to standardise operations.
    • Drive continuous improvement across infrastructure reliability, scalability, and operational efficiency.
    • Support repeatable and maintainable platform operations through automation-first approaches.
  • Incident Management & Escalation
    • Act as a 3rd/4th line escalation point for complex infrastructure issues.
    • Partner with support teams to resolve incidents and restore services effectively.
    • Investigate root causes of infrastructure problems and contribute to long-term fixes.
    • Participate in on-call rotations and incident response activities for critical infrastructure.
  • Cross-Functional Collaboration & Technical Guidance
    • Collaborate with internal teams to ensure solutions meet performance, availability, and security requirements.
    • Contribute to infrastructure roadmap planning, including capacity management and performance tuning.
    • Introduce new technologies that strengthen the infrastructure stack over time.
    • Provide technical expertise to pre-sales and other groups on infrastructure capabilities and best practices.
  • Standards, Security & Compliance
    • Ensure infrastructure platforms adhere to compliance, security, and operational standards.
    • Apply best practices to the operation and evolution of infrastructure services.
    • Support secure and well-governed platform delivery across the environments you own.

KPIs

  • Infrastructure availability and resilience
  • Automation coverage for provisioning, patching, monitoring, and recovery
  • Complex incident resolution and root cause remediation
  • Capacity management and performance tuning effectiveness

About You

  • Strong Python and Bash skills
  • Strong troubleshooting experience with Linux and services running on Linux
  • Experience working with Ceph and core infrastructure services
  • Nice to have experience deploying, managing, upgrading, and operating large OpenStack clusters
  • Experience deploying, managing, and automating Proxmox
  • Knowledge of DNS, DHCP, and configuration management in production environments
  • Ability to operate and improve infrastructure with a focus on availability, scalability, automation, and security
  • Experience handling complex infrastructure issues in an escalation capacity
  • Ability to work effectively with internal teams and provide technical input across the organisation
  • Nice to have knowledge of Ironic and Neutron/OVN/OVS is a plus

What we can offer you

At Nscale, you'll find a collaborative, supportive, and innovative environment where your contributions spark real impact. We're building something extraordinary, and we want you at the core. Highly competitive compensation package (base + bonus + equity), with performance reviews every 12 months. Join one of the fastest-growing AI infrastructure companies — your chance to directly shape how global AI capacity is planned and deployed. Expect a dynamic progression plan tailored to your ambitions. Grow by leading critical cross-functional initiatives and shaping capital strategy — always with our full support. Human-First Flexibility: We treat you as humans first. Our flexible workplace trusts Nscalers to deliver, giving you the autonomy to shape your day around life's moments.

Equal Opportunities Statement

We strongly encourage applications from people of colour, the LGBTQ+ community, people with disabilities, neurodivergent people, parents, carers, and people from lower socio-economic backgrounds. If there’s anything we can do to accommodate your specific situation, please let us know.

The responsibilities outlined in this job description are not exhaustive and are intended to provide a general overview of the position. The employee may be required to perform additional duties, tasks, and responsibilities as assigned by management, consistent with the skills and qualifications required for the role.

(Senior) Infrastructure Engineer in London employer: Nscale

At Nscale, we pride ourselves on fostering a culture of innovation and accountability, where every team member is empowered to make a meaningful impact in the rapidly evolving AI infrastructure landscape. Our commitment to employee growth is reflected in our tailored progression plans and competitive compensation packages, ensuring that you not only thrive in your role but also contribute to shaping the future of AI technology. With a flexible work environment that prioritises your well-being, Nscale is an exceptional place for those looking to advance their careers while making a difference.

Nscale

Contact Details:

Nscale Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land (Senior) Infrastructure Engineer in London

Tip Number 1

Network like a pro! Reach out to folks in the industry, attend meetups, and connect with Nscale employees on LinkedIn. Building relationships can open doors that applications alone can't.

Tip Number 2

Show off your skills! If you’ve got a project or a GitHub repo that showcases your infrastructure expertise, don’t hesitate to share it during interviews or networking chats. It’s a great way to demonstrate your capabilities.

Tip Number 3

Prepare for technical interviews by brushing up on your Python and Bash skills. Practice common troubleshooting scenarios related to Linux and infrastructure services. The more prepared you are, the more confident you'll feel!

Tip Number 4

Apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining the Nscale team.

We think you need these skills to ace (Senior) Infrastructure Engineer in London

Python
Bash
Linux Troubleshooting
Ceph
OpenStack
Proxmox
DNS Management

Some tips for your application 🫡

Show Off Your Skills:Make sure to highlight your strong Python and Bash skills in your application. We want to see how your experience with Linux and infrastructure services can contribute to our team at Nscale.

Tailor Your Application:Don’t just send a generic CV! Tailor your application to reflect the specific requirements of the Infrastructure Engineer role. Mention your experience with OpenStack, Proxmox, and any automation tools you've used.

Be Clear and Concise:When writing your cover letter, be clear and concise about why you’re a great fit for Nscale. We appreciate openness and transparency, so let your personality shine through while keeping it professional.

Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from our team!

How to prepare for a job interview at Nscale

Know Your Tech Stack

Make sure you’re well-versed in the technologies mentioned in the job description, especially Linux, OpenStack, and Proxmox. Brush up on your Python and Bash skills, as these will likely come up during technical discussions.

Showcase Problem-Solving Skills

Prepare to discuss specific instances where you've tackled complex infrastructure issues. Be ready to explain your thought process and the steps you took to resolve the problems, as this will demonstrate your troubleshooting experience.

Emphasise Collaboration

Nscale values teamwork, so be prepared to talk about how you’ve worked with cross-functional teams in the past. Highlight any experiences where you provided technical guidance or collaborated on projects to meet performance and security requirements.

Demonstrate Continuous Improvement Mindset

Discuss how you’ve implemented automation or improved operational efficiency in previous roles. Share examples of how you’ve driven continuous improvement in infrastructure reliability and scalability, as this aligns with Nscale’s focus on innovation.