DevOps Engineer

Miller Maxwell Ltd; Greater London; On-site; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Discretionary bonus

Pension contribution

Private medical insurance

25 days annual leave

Wellness package and gym allowance

Life assurance

Job summary

Miller Maxwell Ltd is seeking a DevOps Engineer to own an internally built provisioning platform and drive automation across Linux servers, with a focus on secure, scalable infrastructure.

You will modernise the deployment workflow, manage secrets with Vault-compatible tooling, speed patching, and extend the Windows and cloud management footprint. A technically deep team offers strong collaboration and impact.

Qualifications

• Degree in a STEM subject and strong Python automation experience.
• Proven Python development across automation platforms.
• Experience with infrastructure as code and monitoring stacks.
• Familiarity with secret management tools is a plus.

Responsibilities

• Own and evolve an internally developed Python-based system for building and managing Linux servers.
• Introduce Vault-compatible secrets management to replace manual credential handling.
• Speed up patching and lifecycle management across the Linux fleet.
• Move network and firewall configuration into version control and manage via PRs.
• Improve how internal applications are built, tested and released.
• Build a repeatable, hardened setup process for Windows desktops and select servers.
• Bring a small cloud footprint under the same automated, code-driven management.
• Improve alerting and monitoring to catch faults early.
• Collaborate with other engineers and peer-review work on the team.

Skills

Python automation

Python scripting

Infrastructure as code

Monitoring tools

Education

STEM degree

Tools

Vault tooling

Git

Terraform

Ansible

Job description

DevOps Engineer - Own Infrastructure Automation across this highly successful HFT.Miller Maxwell is working with a leading electronic trading organisation. The client builds almost all its own technology rather than relying on third-party platforms, and that philosophy extends fully into infrastructure. The estate is predominantly physical servers, with a small amount of virtualisation, running Linux throughout and Windows on desktops and select servers. You'd join an engineering group and take ownership of an internally built provisioning platform, with a broad mandate to extend automation across the wider stack. Lots of projects to be part of during 2026, 2027 and beyond.

• Own and evolve an internally developed Python-based system for building and managing Linux servers.
• Introduce a modern secrets-management layer (Vault-compatible tooling) to replace manual credential handling.
• Speed up patching and lifecycle management across the Linux fleet.
• Move network and firewall configuration into version control, with changes shipped through peer-reviewed pull requests.
• Improve how internal applications are built, tested and released.
• Build a repeatable, hardened setup process for Windows desktops and a handful of Windows servers.
• Bring a small cloud footprint (productivity suite + a major public cloud provider) under the same automated, code-driven management as everything else.
• Improve alerting and monitoring so faults are caught before they cause impact.
• Pair with, and review work from, other engineers on the team.

Skills required for the DevOps Engineer;

• A degree in a STEM related subject.
• 5+ years commercial Python automation experience.
• Excellent commercial Python experience — this is the primary language used across the automation estate.
• Financial experience is not required; however, Automation Software Engineers with this experience will be considered.
• Familiarity with provisioning physical servers directly, along with experience in virtualised environments.
• Comfort managing infrastructure as code.
• Monitoring/observability tooling experience.
• Windows automation or Active Directory experience is useful but not required.
• Comfortable using AI tools responsibly to speed up engineering work.

What the client offers for the DevOps Engineering position:

• Highly competitive discretionary bonus.
• Pension contribution.
• Private medical insurance.
• 25 days annual leave.
• Wellness package and gym allowance.
• Life assurance.
• The chance to work closely with a highly experienced, technically deep team where your contribution has direct, visible impact.