AWS DevOps Engineer (Contract)

We tackle the most complex problems in quantitative finance, by bringing scientific clarity to financial complexity.

From our London HQ, we unite world-class researchers and engineers in an environment that values deep exploration and methodical execution - because the best ideas take time to evolve. Together we're building a world-class platform to amplify our teams' most powerful ideas.

As part of our engineering team, you'll shape the platforms and tools that drive high-impact research - designing systems that scale, accelerate discovery and support innovation across the firm.

Take the next step in your career.

The role

In this role, you'll take ownership of our AWS landing zones and shared platform services, designing secure, scalable, multi-account environments that balance autonomy for engineering teams with strong governance and compliance. You'll deliver robust, automated foundations using Infrastructure as Code, enabling consistent and repeatable cloud adoption across the organisation.

This is a highly collaborative role, working closely with application engineers, architecture, security, and other platform teams to support the design and delivery of cloud-based workloads. You'll provide architectural guidance, define best practices, and ensure reliability, security, and operational excellence are embedded throughout the stack.

Key responsibilities of the role include:

• Designing and operating secure, scalable multi-account AWS environments and platform foundations

• Defining and implementing organisation-level security controls, tooling, and observability capabilities

• Collaborating with architecture, security, and engineering teams to continuously improve compliance, reliability, cost efficiency, and user experience

• Acting as a subject matter expert for application teams, providing guidance and hands-on support with cloud-native application design, deployment, and effective use of the platform

• Building and maintaining infrastructure-as-code patterns and automation to support consistent cloud adoption

• Tracking AWS service developments and evolving platform capabilities and best practices

• Participating in the out-of-hours rota to support critical systems

The ideal candidate will have the following skills and experience:

• Strong experience designing and operating AWS-based platforms and distributed systems

• Hands-on experience running production, multi-account AWS environments

• A security-first mindset, with experience building platforms in regulated or security-sensitive environments

• Solid understanding of AWS identity, networking, and data perimeter controls

• Experience defining guardrails and platform standards that enable teams to move quickly and safely

• Proficiency in Terraform and Python for infrastructure automation

• Familiarity integrating cloud infrastructure into CI/CD pipelines

• Comfortable working across engineering, architecture, and security teams

• Able to explain complex technical concepts clearly to both technical and non-technical audiences