Associate Network and Security Engineer in London

At Spendesk, we're building the leading spend management platform for modern businesses, processing billions of euros across Europe and beyond. Security is at the heart of what we do: our customers trust us to safeguard their financial data, and we're committed to raising the bar for security in fintech. We're building a dedicated Security Engineering function. You'll join alongside a Senior Security Engineer and together form the operational security backbone of the engineering organisation. Your MissionYou'll be hands-on across vulnerability management, access controls, monitoring, and secure development support. You'll work closely with a Senior Security Engineer who'll mentor you and help you grow, while partnering day-to-day with Infrastructure and product engineering teams. This is a hands-on engineering role, not a dashboard-watching SOC seat or a governance one: you'll build, fix, and improve, while a separate team owns policy and risk frameworks. You'll learn fast and ship real security improvements from week one. You will sit at the intersection of two domains: as a security engineer, your impact will be directly measured by how effectively you translate second-line-of-defense guidance (from the Compliance and Regulatory team) into practice, while ensuring technical alignment and buy-in from the Product and Engineering organisation you are part of. Monitor and process security alerts from our SIEM and other monitoring tools. Identity & access managementImplement and maintain SSO/MFA configurations for product and infrastructure systems, leveraging Okta and Google Workspace to manage downstream access rights. Secure development support and toolingRun pre-deployment security checks: static analysis, dependency scanning, container image scanning. Flag issues in code reviews when security patterns are violated. Help engineers understand and fix security findings. Assess adoption of AI coding tools across engineering teams: flag insecure usage patterns, identify data leakage risks, and help maintain internal AI usage guidelines. Maintain and tune detection rules under guidance from the Senior Security Engineer. Help operate and maintain SIEM infrastructure (ElasticSearch, log collection pipelines).Security operationsSupport pentest coordination: prepare test environments, track remediation items. Maintain documentation on security procedures and runbooks. Foundational experience in security engineering, SOC, or a DevOps/SRE role with a strong security focus, eager to deepen across the security stack. Solid understanding of web application security (OWASP Top 10, common attack vectors).Hands-on experience with at least two of: vulnerability scanning tools, SIEM/log analysis, IAM systems (Okta, Google Workspace), or CI/CD security tooling. Comfortable scripting (Python, Bash, or similar) to automate repetitive security tasks. Collaborative mindset: you work across many teams and communicate security issues clearly and constructively. Rather than binary allowed/forbidden calls, you assess and articulate risk through a severity and likelihood lens, bringing teams along instead of acting as a blocker. Experience with AWS security (IAM policies, Security Hub, GuardDuty).Exposure to infrastructure-as-code (Terraform) and container security. As we are an international team, please submit your application and CV in English. About SpendeskSpendesk is the AI-powered spend management and procurement platform that transforms company spending. Trusted by thousands of companies, Spendesk supports over 200,000 users across brands such as Payfit, Accor, Welcome to the Jungle, Swile, Big Mamma, Malt and Yousign. With offices in the United Kingdom, France, Spain and Germany, Spendesk also puts community at the heart of its mission. Flexible on-site and remote policyLatest Apple equipment — the tools you need to excelAccess to Moka.care — for emotional and mental health wellbeingGreat office snacks — to fuel your dayA positive team to work with daily! We also offer location-specific benefits tailored to each market, including health insurance, wellness allowances, commuter support, meal vouchers, and gym memberships — ensuring you're well supported wherever you're based. Diversity & InclusionAt Spendesk, we're committed to fostering an environment where all differences are encouraged, supported and celebrated. We're building our culture for everyone, with everyone.