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- Tasks: Lead the infrastructure strategy and ensure reliability, security, and efficiency of our SaaS platform.
- Company: Join Xelix, a fast-growing tech company transforming financial controls with AI.
- Benefits: Enjoy competitive salary, 27 days leave, hybrid work, and a £1,000 annual learning budget.
- Why this job: Shape the future of tech while working in a fun, dynamic environment with great growth opportunities.
- Qualifications: 8+ years in infrastructure roles and AWS Certified Solutions Architect – Professional required.
- Other info: Be part of a diverse team that values personal and professional growth.
The predicted salary is between 72000 - 108000 £ per year.
About Xelix
At Xelix, we work with some of the world’s largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate – moving from manual processes to automated, intelligent workflows. Xelix is a fast-paced scale-up – things move fast and expectations are high. We raised our Series B with Insight Partners in June 2025 and are expanding aggressively. We have a team of 150 talented people pulling together to achieve our goals. Everyone is trusted to take ownership, move fast and have a meaningful impact. We prioritise personal and professional growth, keep things fun, and love to celebrate a milestone together. In this role you’ll grow, be challenged and help shape the future of Xelix. If you’re excited about building something special with us, we’d love to hear from you.
The Role
To prepare for a significant period of growth, Xelix is seeking a Head of Infrastructure to own the reliability, scalability, security, and cost-effectiveness of the Xelix SaaS platform. This role provides senior technical and operational leadership to ensure our technology and processes are capable of meeting our future business needs. This is a hands-on leadership role combining architecture, operational ownership, and team development. The role requires initiating and delivering change. Our successful candidate will be able to identify the areas where we could improve, make a proposal and see the change through. Taking responsibility, showing pride in your work and excellent communication skills are essential.
The current technology stack makes extensive use of Amazon Web Services using Terraform to configure services. We also use Jenkins, Sentry, GitHub, Shortcut, Python and React and an evolving suite of AI tools. The Head of Infrastructure reports to the VP of Engineering.
What You'll Be Doing
- Platform Strategy & Architecture
- Own the long-term platform and infrastructure strategy
- Design and evolve cloud architecture to support scale, resilience, and performance
- Set standards for infrastructure, CI/CD, environments, and observability
- Make architectural decisions and trade-offs
- Developer Experience (DevEx)
- Provide infrastructure for the development team to code, test and deploy efficiently
- Advise during design sessions to help engineers pick the right solutions for projects
- Reliability & Operations
- Own production reliability, uptime, and incident response
- Define and enforce SLAs and SREs
- Lead incident response and post-incident reviews
- Ensure monitoring, alerting, and on-call practices are effective and sustainable
- Security & Risk
- Partner closely with the Information Security Officer on cloud security and compliance
- Own platform-level security decisions and risk mitigation
- Ensure secure-by-design infrastructure and access controls
- Support compliance initiatives (SOC 2, ISO:27001)
- Leadership & Team Development
- Lead and mentor the DevOps team including DevOps engineers, IT Support and an Information Security Officer
- Provide technical coaching and decision support to the DevOps team
- Cost & Efficiency
- Manage relationship with AWS and other vendors
- Own cloud cost visibility and optimisation
- Balance performance, reliability, and cost trade-offs
- Introduce tooling and practices that improve developer efficiency
What You'll Bring
8+ years in infrastructure, platform, or SRE roles
AWS Certified Solutions Architect – Professional
Prior experience scaling production systems in a growing company
Ability to operate production systems under pressure
Deep hands-on experience with the AWS cloud platform
Strong background in reliability, observability, and incident management
Experience leading or mentoring engineers
What We Offer In Return
💰 Competitive salary depending on experience
🏝️ 27 days of annual leave (including 3 days Christmas closing) which increases up to 3 days based on tenure, with the option to roll over, buy or sell up to 3 days
🏡 Hybrid working with one day a week from our dog-friendly Hoxton office
💪 On-site gym and cycle to work scheme
🛍️ Employee discount at over 100 retailers
🏥 Comprehensive private medical & dental cover with Vitality
🍼 Enhanced parental leave pay
📚 Learning & development culture – £1,000 personal annual budget
🌍 We’re carbon-neutral and are working towards ambitious carbon reduction goals
🎯 Lots of team socials & activities
☀️ Annual team retreat
Want to Learn More?
About us
Xelix blog
Xelix news
Xelix glassdoor
We believe that people from diverse backgrounds, with different identities and experiences make our company and product better. No matter your background, we’d love to hear from you! And if you have a disability, please let us know if there’s any way we can make the interview process better for you - we’re happy to accommodate!
This is a full-time position, with standard working hours from 9:00 AM to 6:00 PM, Monday through Friday.
Interview Process
While the exact process may vary slightly depending on the role, our typical interview stages are:
- Introductory Call – A short Teams conversation with a Talent Partner to discuss your background and the opportunity.
- Hiring Manager Interview – A 30–45 minute Teams meeting to explore your experience and fit for the team.
- Technical Task or Presentation – A role-relevant exercise to demonstrate your skills and approach.
- Final On-site Interview – An in-person meeting with our senior leadership team and co-founders at our office.
Head of Infrastructure employer: Xelix
Contact Detail:
Xelix Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Head of Infrastructure
✨Tip Number 1
Network like a pro! Reach out to people in your industry, especially those who work at Xelix or similar companies. A friendly chat can open doors and give you insider info that could help you stand out.
✨Tip Number 2
Prepare for the interview by diving deep into Xelix's tech stack and recent projects. Show us you’re not just a fit for the role but also genuinely excited about what we do. Bring your ideas on how you can contribute!
✨Tip Number 3
Practice your pitch! Be ready to explain your experience and how it aligns with our goals. We want to hear about your past successes and how you can help shape the future of Xelix.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re serious about joining our team!
We think you need these skills to ace Head of Infrastructure
Some tips for your application 🫡
Tailor Your Application: Make sure to customise your CV and cover letter for the Head of Infrastructure role. Highlight your experience with AWS, Terraform, and any relevant leadership roles you've held. We want to see how your skills align with our needs!
Showcase Your Achievements: Don’t just list your responsibilities; share specific achievements that demonstrate your impact in previous roles. Use metrics where possible to show how you’ve improved reliability, scalability, or cost-effectiveness in past projects.
Be Authentic: Let your personality shine through in your application. We value authenticity and want to get a sense of who you are beyond your technical skills. Share your passion for infrastructure and how you can contribute to our fun and dynamic culture.
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 it gets into the right hands quickly. Plus, it shows you’re keen on joining our team!
How to prepare for a job interview at Xelix
✨Know Your Tech Stack
Familiarise yourself with the technologies mentioned in the job description, especially AWS, Terraform, and CI/CD tools. Be ready to discuss how you've used these technologies in past roles and how they can be applied to improve Xelix's infrastructure.
✨Showcase Leadership Skills
Prepare examples of how you've led teams or projects in the past. Highlight your experience in mentoring engineers and driving change, as this role requires strong leadership and the ability to inspire others.
✨Understand the Business Impact
Be prepared to discuss how infrastructure decisions can impact business outcomes. Think about cost-effectiveness, reliability, and scalability, and come with ideas on how to balance these aspects while supporting Xelix's growth.
✨Prepare for Scenario Questions
Expect scenario-based questions that assess your problem-solving skills under pressure. Practice articulating your thought process for incident management and how you would handle real-world challenges related to platform reliability and security.
