Senior Cloud Security Engineer

🕒 November 20, 2025

🇬🇧 United Kingdom – Remote

⏰ Full Time

🟠 Senior

👮‍♂️ Cybersecurity / Security Engineer

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Form3

WebsiteLinkedInAll Job Openings

501 - 1000 employees

💸 Finance

💳 Fintech

☁️ SaaS

💰 Debt Financing on 2022-10

Finance • Fintech • SaaS

Form3 is a cloud-native payment technology company revolutionizing financial transactions for institutions by removing the need for outdated infrastructure. They offer a modern, real-time, account-to-account payment platform that supports multiple regions, including the US, EU, and UK, providing a single API access to various payment schemes. Known for their enterprise-grade solutions, Form3's platform is designed for scalability, security, and compliance, aiming to help financial institutions manage payments efficiently while mitigating regulatory complexities. Their innovative approach addresses client needs by offering flexibility, fraud prevention tools, and seamless integration with existing systems, enabling growth and collaboration in the evolving payment landscape.

📋 Description

• You’ll design, implement, and maintain defensive security controls that protect our high-availability, multi-cloud payment systems built on modern technologies. • Your deep understanding of current threats, exploitation methods, and risk trade-offs will enable you to guide engineering teams on effective security features and ensure the right defensive measures are prioritised.

🎯 Requirements

• You live on the linux command line • Your current research and experience back up your opinionated views on security practices and tradeoffs, which you love to openly debate and willingly share • You’re sought after for your security engineering expertise, having built multiple security controls that are actively proven in large production estates • 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 centers and networking devices • You’re terrified by supply chain and CI/CD security, but have good patterns for reducing the risks • Your engineering experience matches Form3’s tech stack – including Golang and Terraform

🏖️ Benefits

• We are a remote-first organisation and are able to accept applications from the following countries; Germany, Netherlands, Spain, Portugal & UK