Site Reliability Engineer - Frontend

capitalontap

London · United Kingdom

Posted Jul 28, 2026

Other
Hybrid
IT

Job description

We’re Capital on Tap 👋
💳 Capital on Tap started because small businesses were underserved. Big banks were slow, their products weren't fit for purpose, and small business owners often couldn't access what they needed. We set out to fix that.

Today we're a financial platform - not just a credit card company. We offer a best-in-class business credit card, SME-focused spend management platform, a savings product that hit £1 billion in funds within its first year, and a growing suite of tools and financial products that make running a small business easier.

1,000+ employees, £20bn in annual card spend, 200,000+ customers, 17,000+ Trustpilot reviews averaging 4.7 stars, and we're profitable. We’ve done a pretty good job so far, but we’re just getting started!

📍London, Old Street | 🏢 2 Days in Office

SRE at Capital On Tap 🌞

At Capital On Tap, we run a hybrid embedded SRE model - We aim to work closely with the teams to provide them the best support. As a Site Reliability Engineer (SRE) you will help ensure our platforms are fast, reliable, and scalable. You’ll design, build, and monitor systems, preventing issues before they happen.

XP, the engineering group you will be embedded into, is the platform group that builds the foundations the rest of our engineers rely on: the shared UI frameworks for web and mobile, the backend-for-frontend layer, and the internal developer platform and shared backend libraries beneath them. Our job is to make it fast and safe for product teams to ship great features, by owning the architecture and paved paths they build on top of.

What you’ll be doing 🗃️

Manage and automate resources in Azure, Datadog, NGINX & Cloudflare.
Develop, deploy and monitor Kubernetes and Serverless resources.
Build, manage, and evolve IAC using Terraform, Helm and Go CRDs.
Improving systems, processes, and technologies; consulting stakeholders to enhance platform performance.
Design and maintain comprehensive monitoring and alerting strategies using Datadog.
Getting involved in new application architecture & design processes.
Designing solutions to reduce toil, automate repetitive tasks and streamline workflows to reduce manual work and boost team productivity.
Creating SLIs and SLOs; increasing application visibility
Align with the Product team on SLAs and core service objectives
Collaborating with core foundational teams to build and maintain reusable, automated solutions.
Optimising CI/CD pipelines and developer workflows using Azure DevOps, Github, Octopus Deploy, MirrorD, and Flux.
Leading incident response; taking an active part in communications, investigations, remediation and post-mortems to protect the customer experience.

Our Values & Culture 🌞

Just Pilot: We never settle for “good enough”. We pilot new ideas fast, ask questions to figure it out, and scale quickly.
Why Not Today? Fast is as slow as we go - speed and simplicity gives us a competitive advantage.
Be a Buddy: We tap in from day one to help the team, we do the right thing even if it’s hard.
Owners and Dates: We don’t chase people. If you own a task and agree to a date, the expectation is that it gets done.
Feedback: We want our employees to flourish, so we regularly provide direct and constructive feedback.

What are we looking for 🔍

Experience managing public cloud environments.
Proficient in contributing to IaC technologies involving expertise in writing, managing, and optimising infrastructure with tools such as Terraform.
Experience using CI/CD tools, building pipelines, templates and troubleshooting.
Proficient with containerisation technologies such as Kubernetes and Docker.
Experience building and deploying frontend applications with tools such as CodeMagic.
Knowledge or Experience with Google Firebase.
Experience working with a cloud monitoring solution.
Proficiency in at least one scripting language such as Python, PowerShell, Go.
Great communication skills with the ability to collaborate effectively.
Proven experience with a software development background.

Even if you don’t have all of the necessary skills, we still encourage you to apply.

Interview process 🤝

First stage: 30 minute intro and values call with Talent Partner
Second stage: 60 minute CV overview and technical chat with the SRE team lead and the SRE & Platform Engineering Manager
Third stage: 75 minute technical exercise & questions with the SRE lead
Final stage: 30 minute chat with the Engineering Manager and a lead of XP

We will try to fit in the third and final stage on the same day.

Diversity & Inclusion 🌈
We welcome, consider and encourage applications from anyone who shares our commitment to inclusivity. Join us in creating a space where authenticity thrives, and everyone can do their best work.

Great Work Deserves Great Perks
We try not to take ourselves too seriously (all the time) so we make sure our office is decked out with a pool table, arcade machine, beer tap, and a couple of office dogs thrown in for good measure. Check out our benefits:

🏥 Private Healthcare including dental and opticians services through Vitality
✈️ Worldwide travel insurance through Vitality
🎁 Anniversary Rewards (£250, £500, £750, 4-week fully paid sabbatical)
👛 Salary Sacrifice Pension Scheme up to 7% match
🏖️ 28 days holiday (plus bank holidays)
📖 Annual Learning and Wellbeing Budget
👪 Enhanced Parental Leave
🚲 Cycle to Work Scheme
🚂 Season Ticket Loan
💬 6 free therapy sessions per year
🐶 Dog Friendly Offices
🍫 Free drinks and snacks in our offices

Check out more of our benefits, values and mission here.

Other Info
👍Check out our ‘Top Tips’ for interviewing.
✔️Keep updated on new job opportunities by following us on Linkedin.
📧Email careers@capitalontap.com if you have any questions.

Excited to work here? Apply!
If you’d like to progress your career within our fast growing, profitable fintech then click apply and we will aim to get back to you within 3 working days (during busy periods this could take up to 5 working days.)