Senior DevOps Engineer (AWS Platform)

About the job About The Role We're a security-first fintech scale-up building a globally distributed platform, and we're looking for a Senior DevOps Engineer to help scale and mature our AWS infrastructure. Reporting to the Head of DevOps, you'll take ownership of a AWS platforms supporting multiple environments and services. You'll focus on improving resilience, scalability, cost efficiency, and developer experience, while driving standardisation through infrastructure as code and platform best practices. This is a hands-on role where you'll collaborate closely with Engineering, WebApps, QA, and Security teams to build systems that are robust, observable, and aligned with AWS best practices and the Well-Architected Framework. What You'll Be Doing Design, build, and manage AWS infrastructure using Terraform, with a focus on reusable modules and standardisation Operate and optimise AWS services including ECS, EC2, Lambda, SQS/DLQ, CloudWatch, IAM Develop and improve CI/CD pipelines (GitHub Actions, CodeDeploy) for consistent, reliable deployments Build and enhance observability frameworks (logging, monitoring, alerting) across distributed systems Implement and manage identity and access controls, including SSO and access brokering Collaborate with Security on platform hardening and integration with security tooling (e.g. SIEM, DLP) Contribute to platform engineering initiatives Drive cost optimisation efforts across AWS (rightsizing, reserved capacity, scaling strategies, and cost visibility) Troubleshoot production issues, perform root cause analysis, and implement long-term fixes Continuously improve infrastructure through automation, documentation, and best practices Working closely with Engineering team to design, deploy, harden and consistently keep secure containerisation and deployment Working with Compliance teams on PCI DSS, ISO27001 and SOC2 standards, making sure infrastructure is compliant Requirements Required: Strong experience as a Senior DevOps / Platform Engineer in AWS environments Deep hands-on expertise with AWS services (ECS, EC2, Lambda, IAM, CloudWatch, SQS, etc.) Strong knowledge of AWS networking (VPC design, routing, security groups, NACLs, private/public architectures) Proven experience with Terraform, including building reusable modules Openness to and experience with infrastructure-as-code approaches, with Terraform preferred but alternative IaC tools considered Solid understanding of AWS Well-Architected Framework and cloud best practices Experience designing and operating multi-region architectures Strong CI/CD experience (GitHub Actions, CodeDeploy or similar) Experience with identity and access management, including SSO Strong Linux and containerisation knowledge (Docker, ECS) Experience building and maintaining observability and monitoring systems Desirable: Experience with security tooling integrations (SIEM, DLP, etc.) Experience working in regulated environments (PCI DSS, ISO 27001, etc.) Experience with Terraform automation tooling (e.g. Terraform Cloud, Atlantis) Familiarity with Internal Developer Platforms (IDP) or self-service infrastructure models Experience with Cloudflare WAF or similar edge security tooling Exposure to Kubernetes (EKS or Other) Exposure to Kafka Familiarity with MongoDB Scripting or programming experience (any language; Rust a bonus) Benefits Competitive salary 68,000+ DOE Flexible working hours and remote-first setup Work-from-abroad flexibility 28 days holiday + bank holidays Private medical insurance (including dependants) Pension contributions Training, certifications, and professional development support