Capital on Tap
Site Reliability Engineer
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SRE at Capital On Tap
At Capital on Tap, we run a hybrid embedded SRE model. Our mission is to provide cross-functional teams with the best support and ensure they have the necessary visibility into platform health and scalability.
The role sits within the BAR (Banking and Repayments) Team, tasked with building and scaling payments and card systems. These foundational elements power our financial platform, ensuring it’s quiet, robust, and seamless for our users.
About the Role
About We’re Capital on Tap We’re a financial platform, far from just a credit card company. Our offerings include a best-in-class business credit card, SME-focused spend management, a savings product that hit £1 billion within its first year, and a growing suite of tools to simplify business operations.
With 1,000+ employees, £20bn in annual card spend, 200,000+ customers, and a Trustpilot rating of 4.7/5 (across 17,000+ reviews), we’re proud to be confidently profitable. We don’t see ourselves as just a good start—we’re at the beginning of a bold new chapter.
We prioritise our London, Old Street hub and operate on a 2 Days in Office model.
What You’ll Be Doing
As a Site Reliability Engineer (SRE), you’ll:
- Design, build, and monitor systems to ensure they’re fast, reliable, and scalable, while preventing issues proactively.
- Use SLAs, SLIs, and SLOs to guide feature launches without compromising service stability.
- Manage & automate resources across Azure, Datadog, NGINX, and Cloudflare.
- Develop and monitor Kubernetes and Serverless resources, ensuring optimal infrastructure performance.
- Maintain infrastructure code with Terraform and CRDs / Crossplane.
- Enhance systems, processes, and technologies by consulting stakeholders to improve platform performance.
- Engage with new application architecture & design processes to guarantee adopting modern best practices.
- Design automation, tooling or practices to reduce toil and higher efficiency of team workloads.
- Align with the product team on SLA targets and core service objectives.
- Collaborate with Platform Engineers to design automated systems and CI/CD pipelines.
- Work with the customer facing teams to improve user experience by optimising labour intensive procedures.
- Troubleshoot incidents to mitigate customer impact.
- Maintain and support existing CI/CD stack including Azure DevOps, Octopus Deploy & Flux.
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Requirements
Technical Skills:
- Proven public cloud management skills (Azure is advantageous).
- Experience with CI/CD tools (Azure DevOps, Octopus, Flux or similar).
- Hands-on expertise with Linux and Microsoft Windows systems.
- Strong familiarity with cloud monitoring tools (preferably DataDog).
- Comfortable working with Kubernetes & Docker ecosystems.
- Experience in at least one scripting language (Python, PowerShell, Go preferred).
Other:
- Placed an emphasis on clear, prompt communication and help to drive cross-functional collaboration in an agile environment.
- Demoed experience with Infrastructure as Code (IaC) - specifically writing, managing, and optimising infrastructure using Terraform or Pulumi.
- Deep passion for pushing financial technology and **"behind the scenes" challenges within a team solving complex business issues.
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Benefits
Here at Capital on Tap, we take pride in providing our team with benefits that ensure well-being and fun.
- Private Healthcare (Vitality Cover, including dental & optician).
- Worldwide Travel Insurance through Vitality.
- Anniversary Rewards (from £250 up to a 4-week paid sabbatical).
- Salary Sacrifice Pension Scheme with 7% match up to 7%.
- 28 Days Paid Holiday (plus bank holidays).
- Annual Learning & Wellbeing Budget.
- Enhanced Parental Leave.
- Cycle-to-Work Scheme.
- Season Ticket Loan.
- 6 Free Therapy Sessions annually.
- Dog-Friendly Offices.
- Free drinks & snacks in-office.
Interview Process
The hiring journey at Capital on Tap is structured as follows:
- 30-minute intro + CV review & values discussion with a Talent Partner.
- 60-minute technical conversation with the Team Manager (getting to know you and your thought process).
- 75-minute technical task + 30-minute interview with Head of Platform Engineering.
Diversity & Inclusion
At Capital on Tap, we celebrate what makes us unique. We actively encourage, consider, and welcome applications from anyone with a shared commitment to inclusivity. Our mission is to foster an environment where authenticity thrives, allowing everyone to perform at their best.
Application Process
Please email careers@capitalontap.com if you wish to discuss anything further.
We’re excited about growing with you in a fast-paced and profitable fintech ecosystem—apply now! Expect to hear back from us within 3 business days. (If the pipeline is especially busy, this timeline may extend to 5 working days.)
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