Senior Cloud Security Engineer (Kubernetes) in London

You will build and run defensive security controls for highly-available multi-cloud payment systems running the latest technology. You understand current threats, exploitation paths and risk trade-offs in order to advise engineering teams on beneficial security features as well as prioritise management of defensive controls.

We're Looking For

• Essential

• You live on the Linux command line.
• Your current research and experience back up your opinionated views on security practices and trade-offs, which you love to openly debate and willingly share.
• You're sought after for your Kubernetes security expertise and have developed complex heavily customised multi-cluster environments.
• Your security expertise extends to at least one public cloud, including essential security features and long-term security hardening practices.
• You appreciate building systems with good engineering practices and may have a background in software engineering at scale.
• You're open to being a part of our on-call rota, ready to respond if we have a severe, platform-impacting security tooling failure or need second-line security incident response assistance.

• You have an interest in offensive security, potentially including participation in CTFs and past experience as a red team operator or pen tester.
• You've developed security configurations in multiple public and private clouds.
• You're a confident presenter and have accelerated appreciation of security across engineering teams.
• You regularly support building and analysis of threat models using a well-defined process.
• You have experience securing data centres and networking devices.
• You're terrified by supply chain and CI/CD security, but have good patterns for reducing the risks.
• Your engineering experiences match Form3's tech stack — including Golang and Terraform.

Tech Stack

• AWS, GCP, Azure and private Data Centres.
• Kubernetes, Helm, Flux.
• Distributed systems, mostly Golang based with CockroachDB and NATs.
• SIEM/SOAR, EDR, CNAPP, and a suite of open source tools with custom integrations.

The Team

You will join a team of defensive security engineers directly maintaining and expanding security controls as well as advising the wider platform and application engineers within our R&D team. We report into the CISO and work alongside the other functional pillars of InfoSec.

Interview Process

• Stage 1: Screening Call with Talent Team.
• Stage 2: Technical Interview – Kubernetes and Linux Security, including a short pre-interview research topic.
• Stage 3: Technical Interview – Building secure cloud architectures & team alignment.

We always aim to stick to the above process, however there may be occasions when an additional interview stage is needed for us to be sure we're hiring the right person!

Hiring Locations

We are a remote-first organisation and are able to accept applications from the following countries: Germany, Netherlands, Spain, Portugal & UK. All new joiners start their first day in our office to collect the equipment needed to work remotely. We'll also arrange for some of your team to come in to say hi, ensuring you're supported and have a positive first few days with Form3!

About Form3

Revolutionising the world of payments with our cutting-edge technology and innovative solutions.

Our DEI&B Commitment

We hire talented people from a variety of backgrounds and experiences and are committed to a work environment based on diversity, open-mindedness and curiosity. We're united by our company values and we celebrate our unique differences.

Our employee lifecycle processes are designed to embrace equal opportunity and prevent discrimination against our people regardless of personal characteristics. It is our strong belief that the more inclusive and belonging we are as a business, the better our work will be.

As an inclusive employer, we guarantee to interview all neurodiverse and physically disabled applicants who meet the minimum criteria for this role. We also encourage candidates to notify us of any reasonable adjustments that may be required during the recruitment process.