Systems Engineer

Overview

In this role you will manage and improve the AWS-based infrastructure for a growing cross-border payments platform. You will implement and operate the environment using infrastructure as code, maintaining security and performance, and act as the first line of response for incidents. Architecture decisions are made by the group engineering team, while you focus on reliable, high-standard delivery. The role involves ensuring reliable payment integrations, idempotency controls, and FCA-audit documentation in a regulated setting. This is a hands-on, hybrid London-based opportunity with meaningful impact on platform scale and reliability.

Responsibilities

• Manage and deploy AWS infrastructure (EC2, RDS, Lambda, SQS/SNS, VPC, IAM) using infrastructure as code
• Monitor security and performance of the environment
• Provide production support including on-call and incident management
• Serve as the first point of response for infra incidents
• Implement reliability-focused enhancements and follow high engineering standards
• Maintain documentation that supports FCA audit requirements and regulatory compliance
• Implement queue-based retry logic for partner integrations and idempotency controls
• Collaborate with the group engineering team on architecture decisions

Key requirements

• 5+ years of systems engineering or DevOps experience on AWS
• Hands-on infrastructure as code with Terraform, CloudFormation or CDK
• Experience with event-driven architectures and message queues
• Production support experience, including on-call and incident management
• Strong, detailed documentation skills
• Right to work in the UK (sponsorship is not available)
• An AWS certification, fintech or financial services background, and scripting experience in Python or Bash would be beneficial

• strong documentation and communication
• ability to operate in a regulated environment
• problem-solving under incident pressure
• AWS services: EC2, RDS, Lambda, SQS/SNS, VPC, IAM
• Infrastructure as code: Terraform, CloudFormation or CDK
• Event-driven architectures and message queues

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