Platform Engineer

Selby Jennings; City Of London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Selby Jennings is seeking an Platform Engineer to join an engineering-led technology company building large-scale infrastructure in a fast-paced environment. You will own reliability, automation, and developer experiences, working across production environments and internal developer platforms to improve tooling and efficiency.

You will design and enhance CI/CD pipelines, automate infrastructure, and drive observability and monitoring to reduce toil while delivering scalable solutions.

Qualifications

• Strong Linux, networking, and infrastructure fundamentals.
• Experience with infrastructure automation and CI/CD.
• Excellent problem-solving skills and a proactive mindset.
• Ability to work independently and take ownership of initiatives.
• Experience supporting and operating production environments; strong monitoring and observability knowledge.

Responsibilities

• Building and enhancing CI/CD pipelines and deployment workflows.
• Automating infrastructure and eliminating manual operational processes.
• Managing and improving production systems and platform reliability.
• Developing monitoring, alerting, and observability capabilities.
• Streamlining developer workflows and improving engineering productivity.
• Troubleshooting infrastructure, Linux, and networking-related issues.
• Driving platform improvements from concept through to delivery.

Skills

Linux basics

Networking

CI/CD

Ownership

Problem-solving

Job description

Join an engineering-led technology company building sophisticated, large-scale infrastructure in a fast-paced and highly technical environment. This is an opportunity to play a key role in shaping the platform that supports engineering teams, with direct ownership of reliability, automation, and developer experience.

As a Platform Engineer, you will be responsible for improving the systems, tooling, and infrastructure that enable engineers to build and deploy software efficiently. You'll work across production environments, automation, observability, and internal developer platforms, helping to create scalable and resilient systems while reducing operational overhead.

What You'll Be Doing

• Building and enhancing CI/CD pipelines and deployment workflows
• Automating infrastructure and eliminating manual operational processes
• Managing and improving production systems and platform reliability
• Developing monitoring, alerting, and observability capabilities
• Streamlining developer workflows and improving engineering productivity
• Troubleshooting infrastructure, Linux, and networking-related issues
• Driving platform improvements from concept through to delivery

What We're Looking For

• Strong Linux, networking, and infrastructure fundamentals
• Experience with infrastructure automation and CI/CD
• Excellent problem-solving skills and a proactive mindset
• Ability to work independently and take ownership of initiatives
• Experience supporting and operating production environmentsStrong understanding of monitoring, observability, and operational best practices
• A focus on building simple, scalable, and effective solutions

Why Join?

• High-impact role with significant ownership and autonomy
• Opportunity to influence engineering productivity across the business
• Work closely with talented engineers in a collaborative environment
• Exposure to complex infrastructure and large-scale systems
• Competitive compensation and strong long-term career growth opportunities

This role is ideal for an engineer who thrives in ambiguous environments, enjoys solving challenging infrastructure problems, and wants to have a genuine impact on how engineering teams operate and deliver software.