Form3 • 100% Remote (UK/EU*)

Senior Cloud Security Engineer

Employment type:  Full time


Fully flexible hours

Job Description


The team is comprised of our Defensive and Offensive Engineering teams alongside our Information Security Officers, whilst our CISO leads the operation. Our security team interact with the product and platform engineering teams across the company to promote best practices and awareness. They’re continually baking security into our culture, utilising new technologies and open-source tools to ensure high standards of security are maintained.


We are expanding the Security Engineering team extensively, meaning that there are many skill-sets and experiences required. Your place within the team will depend on your individual strengths and interests, to give you an idea of some of the areas that of expertise we are looking for, here are some of the key projects/ workloads our team take on:

  • Creating a Secure Software Development Lifecycle (SSDLC)
  • Securing our cloud-native (AWS, GCP and Azure) distributed system architecture
  • Creating security tools and implementing them to enhance our specific security landscape
  • Advocating the DevSecOps mindset that we have created across our engineering teams


  • Infrastructure: AWS, GCP, Azure, Kubernetes (this will increase as we go cloud-agnostic)
  • Platform: CockroachDB, EKS, GKE, PostgresDB, Vault, Consul, Linkerd, Cilium, NATS
  • Tools: Terraform, Github, Flux, Prometheus,, TFSec, Travis CI
  • Code: Go, (a little Java), CQRS, Open-Source, Python (Security tools)
  • Ways of working: DevSecOps, GitOps, TDD/BDD, Pair Programming, 100% Remote


  • Experience in securing SDLCs, conducting SAST and DAST testing, threat modelling, code analysis and incident management. Our engineering teams are constantly developing new products that are added to our singular API gateway so the CI/CD pipeline must be secure by design.
  • Ability to create, deliver and enhance security of cloud-native distributed systems (we use AWS and GCP at present with Terraform as our Iac tool), following the best practices and implementing security controls post assessment. We are also looking to become cloud-agnostic meaning there will be opportunity for you to showcase your abilities across other cloud platforms.
  • Strong programming skills, we are flexible on languages, we use Go as our main language for production so a willingness or interest to learn Go is fundamental. In security we write our own scripts for automation in Python, Go and other languages while contributing to open-source tools so we can utilise them.
  • Familiarity with containerisation and microservices architecture security concepts is also crucial to being successful in this role.
  • Willingness to be part of the on-call rota.


SDLC Based:

  • 3+ Years of expertise in Kubernetes, securing clusters and meshes (Cilium is preferable), networking best practices and RBAC implementation (CKA, CKS qualifications are a plus)
  • Experience in hardening Linux OSs
  • +3 Years of container security knowledge including container image provenance (Sigstore and Notary as examples) with an in-depth knowledge of container runtimes/ Docker and the security controls and best practice that surround microservice architectures
  • Involvement in DevSecOps operations within Agile environments on to CI/CD pipelines (Travis CI and Flux are our tools) with the ability to choose the right tool to fit purpose
  • Hands on work within agile DevOps environments that follow the DevSecOps best practices, where you expressed the ability to choose the right tool to fit purpose
  • CI/CD pipeline (Travis CI and Flux are our tools) security management

Wider Security:

  • Hands on experience taking your company through any of the following ISO27001, ISAE3000, SOC2/1, GDPR, PCI-DSS
  • Previous experience in developing security road maps and architectures alongside Security Architects in cloud-native or hybrid-infrastructures including network security (AWS solutions architect or GCP professional cloud architect are a plus)
  • Previous experience in network security, preferably in hybrid infrastructure based environments, you will have managed, switches, network segmentation, ports and firewalls across the entire OSI model.

Personal Interests:

  • Keen interest in new and emerging threats, vulnerabilities and adversary advancements coupled with the ability to present these to the wider team
  • Active contributor to open-source projects and passion for developing internal tools (our engineers were some of the main contributors for TFSec)
  • Additional Qualifications (nice to have but not necessary): OSCP, CASE, CCSP, AWS Security Specialist or GCP Professional Cloud Security Engineer


  • 30 days annual leave plus public holidays
  • Remote friendly environment
  • Remote working equipment allowance
  • Health and wellness allowance
  • Flexible working arrangements
  • 4 hours of “investment time” per week, to spend working on projects that you are passionate about improving
  • Learning days, Udemy and educational reimbursements
  • Primary caregiver leave
  • Full details are available on our careers page

Form3 appreciates that we all lead different and often really busy lives. We work remotely 100% of the time and many of us work part time. If you’re interested in hearing what different flexible working arrangements may be available, we’d love to chat. HIRING LOCATIONS
We are able to accept applications from the following countries; Belgium, Czech Republic, France, Germany, Greece, Hungary, Ireland, Netherlands, Spain, Poland, Portugal, Romania & United Kingdom ABOUT US We are an award-winning cloud-native payment technology provider for financially regulated institutions. Launched in 2016, we've doubled in size year on year as we continue to redefine what a truly instant payment experience means.We celebrate diversity, promote entrepreneurialism and are committed to giving everyone a say in shaping our business. Here you will grow as a person and accomplish incredible things. A career at Form3 is empowering, inspiring and fun. Join us and help shape the future of payments.


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 (we even created them together!) 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. This includes providing job adverts in alternative, accessible formats or adjustments required at interview stage.

If you consider yourself to be neurodiverse or physically disabled under the UN definition of disability and would like to be considered under this scheme and/or require any reasonable adjustments please let us know by sending an email to clearly stating your consent for us to process this data.

For more information please refer to our Recruitment Data Policy.

Company benefits

Open to part-time employees
Open to job sharing
Enhanced maternity leave
Adoption leave
Work from anywhere scheme
Summer hours
Enhanced sick pay
Teambuilding days
Wellbeing allowance
Mental health platform access
Bank holiday swaps
Share options
L&D budget
Cycle to work scheme
Udemy and educational reimbursements
Employees are very happy with their working location freedom
Employees are very happy with the flexibility in the hours they work
Employees are largely happy with the benefits their company offers
Work-life balance
Employees feel that they can switch off quite easily from work
Role modelling
Employees feel that flexible working is part of the culture
Employees feel they have complete autonomy over getting their work done

Working at Form3

Company employees

+500 globally

Gender diversity (male:female)


Office locations

Remote (EU) / London

Funding levels


Hiring Countries


United Kingdom

United States

Awards & Achievements

Finance & Insurance

Finance & Insurance

Industry awards 2023
3rd – Medium companies

3rd – Medium companies

Flexa100 2023
Finance & Insurance

Finance & Insurance

Industry awards 2022