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!

📍 Porto Matosinhos | 🏢 2 Days in the Office

Platform Engineering at Capital On Tap 🚀

The Platform Engineering team powers fast, secure, and reliable software delivery across the business. We partner with Engineering, Data, Security, and QA teams to build platforms that reduce toil and make engineers' lives easier. From managing our Azure infrastructure and CI/CD pipelines to shaping core developer tooling, we focus on scalability, resiliency, and security at every step. We're always exploring new tools, testing ideas, and applying industry best practices to keep our platform cutting-edge and our teams empowered.

What You'll Be Doing 🗃️

• Develop a deep understanding of how infrastructure changes differ from application changes, and become a subject matter expert in the unique challenges of testing them safely and effectively.
• Define and own the frameworks, processes, and guardrails that ensure infrastructure changes are validated consistently across all environments from development through to production.
• Build and maintain automated validation pipelines that verify infrastructure changes at each stage of promotion, catching drift, regressions, and misconfigurations before they reach production.
• Establish clear standards for what "good" infrastructure testing looks like at Capital on Tap covering areas such as plan validation, policy compliance, integration testing, and rollback verification.
• Design, provision, and maintain dedicated test environments on Azure, ensuring they are stable, reproducible, and closely mirror production.
• Own the Infrastructure as Code (Terraform) for all test environment provisioning, teardown, and configuration management.
• Collaborate with QA and Product Engineering teams to understand environment requirements and translate them into reliable, scalable infrastructure.
• Develop and enforce standards around test data management — including data seeding, masking, and refresh strategies to support consistent and repeatable testing.
• Monitor the health and availability of test environments using existing observability tooling, proactively identifying and resolving issues before they block teams.
• Contribute to incident management processes, ensuring infrastructure-related failures are diagnosed quickly and learnings feed back into improved guardrails and processes.

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.

We’re Looking For 🔎

• 2-4 years of experience in a platform, DevOps, or infrastructure engineering role, ideally with some exposure to QA, testing practices, or quality engineering.
• A genuine curiosity for understanding how infrastructure changes behave differently to application code changes, and an interest in building the processes to test them rigorously.
• Hands-on experience with a major cloud provider (Azure, AWS, or GCP), with the ability to design and manage non-production environments.
• Proven experience writing and maintaining Infrastructure as Code (Terraform), including an understanding of plan/apply workflows and how changes can be safely validated.
• Familiarity with policy-as-code, compliance validation, or infrastructure testing approaches (e.g. validating configurations, detecting drift, or verifying rollback behaviour).
• Solid understanding of containerisation and Kubernetes, particularly in the context of running isolated, ephemeral test workloads.
• Familiarity with CI/CD pipelines and how infrastructure change validation fits into automated delivery workflows.
• Comfortable working with observability and alerting tooling to monitor environment health and surface issues early.
• Proficiency in at least one scripting language (Python, PowerShell, or Go) for automation and tooling tasks.
• Strong communication skills and a collaborative approach, you'll be working closely with platform engineers, QA engineers, and security teams to establish shared standards.

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

Interview Process 🤝

• First stage: 30-minute intro, CV review, and values with Talent Partner
• Second stage: 45-minute “Tech Chat” with Team Manager
• Final stage: 60-minute Code Pairing + 30-minute Stakeholder Interview with Engineering & Product

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
🚘 Octopus EV Salary Sacrifice Scheme
🏖️ 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.)