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- Tasks: Lead infrastructure strategy and ensure reliability, scalability, and security of our SaaS platform.
- Company: Join Xelix, a fast-paced scale-up revolutionising financial automation with AI solutions.
- 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 making a real impact in a dynamic environment.
- Qualifications: 8+ years in infrastructure roles and AWS Certified Solutions Architect – Professional.
- Other info: Be part of a diverse team with excellent career growth and fun team activities.
The predicted salary is between 72000 - 108000 £ per year.
About us
Xelix works 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 milestones 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.
About 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
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.
We strive to make the process clear, efficient, and respectful of your time.
Head of Infrastructure in London employer: Xelix
Contact Detail:
Xelix Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Head of Infrastructure in London
✨Tip Number 1
Network like a pro! Reach out to people in your industry on LinkedIn or at events. A friendly chat can lead to opportunities that aren’t even advertised yet.
✨Tip Number 2
Prepare for interviews by researching the company and its culture. Show us you’re genuinely interested in Xelix and how you can contribute to our growth!
✨Tip Number 3
Practice your pitch! Be ready to explain how your skills align with the Head of Infrastructure role. We want to hear how you can make an impact from day one.
✨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, we love seeing candidates who take that extra step.
We think you need these skills to ace Head of Infrastructure in London
Some tips for your application 🫡
Show Your Passion: When writing your application, let your enthusiasm for the role shine through! We want to see how excited you are about the opportunity to shape the future of Xelix and contribute to our growth.
Tailor Your CV: Make sure your CV is tailored to highlight your relevant experience in infrastructure and leadership. We’re looking for specific examples that demonstrate your ability to manage production systems and lead teams effectively.
Be Clear and Concise: Keep your application clear and to the point. We appreciate well-structured responses that get straight to the heart of your experience and skills. Avoid fluff and focus on what makes you a great fit for us!
Apply Through Our Website: Don’t forget to apply through our website! It’s the best way for us to receive your application and ensures you’re considered for the role. Plus, it shows you’re serious about 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 practices. Be ready to discuss how you've used these tools in past roles and how they can be applied to improve Xelix's infrastructure.
✨Showcase Leadership Experience
Prepare examples of how you've led teams or projects in the past. Highlight your ability to mentor others and drive change, as this role requires strong leadership skills. Think about specific challenges you faced and how you overcame them.
✨Understand the Business Impact
Research Xelix and understand its mission to automate financial controls. Be prepared to discuss how your role as Head of Infrastructure can directly contribute to the company's growth and success. Show that you’re not just a techie but also a strategic thinker.
✨Prepare for Scenario Questions
Anticipate questions about incident management and reliability. Think through scenarios where you've had to respond to incidents or improve system reliability. Use the STAR method (Situation, Task, Action, Result) to structure your answers clearly.
