Senior Infrastructure Engineer

Job Overview

We're looking for an Infrastructure Engineer to join our growing Core Platform team, responsible for building and managing the cloud systems that power our data and intelligence products. This role is key to shaping the foundations of a scalable, high-performance platform, ensuring we continue to deliver world-class blockchain analytics while making thoughtful, data-driven infrastructure decisions.

This is a hands-on engineering position focused on AWS, observability, and infrastructure automation to help build tools and processes that improve how we monitor, understand, and optimise the efficiency of our cloud infrastructure across AWS and Databricks.

Key Responsibilities

• Design and build systems to monitor, manage, and optimise cloud infrastructure costs across AWS and Databricks
• Implement cost observability tools, alerts, and dashboards to surface actionable insights to engineering teams
• Collaborate with engineering teams to influence infrastructure and workload design for cost efficiency
• Analyse trends in cloud service usage (e.g. EC2, S3, Databricks compute), identify bottlenecks or inefficiencies, and propose solutions
• Build automation and self-service tools that enable developers to choose cost-effective patterns by default
• Evaluate and implement AWS cost optimisation strategies (e.g. Savings Plans, Spot Instances, right-sizing) to improve efficiency and scale sustainably
• Collaborate with Finance and Engineering to enhance cost visibility into cloud spend, improve forecasting accuracy, and strengthen cost allocation through better tagging practices.
• Contribute to architecture design discussions and surface trade-offs between cost, performance, and scalability.

Required Qualifications

• Experience designing, maintaining, and optimising AWS infrastructure (especially EC2, S3, CloudWatch, Lambda)
• Knowledge of Databricks compute environments (e.g. clusters, pricing tiers, Photon, streaming jobs, auto-scaling settings, etc.)
• Experience working with or implementing cost observability tools (e.g. CloudZero, CloudHealth, AWS Cost Explorer, FinOps dashboards)
• Strong understanding of the relationship between infrastructure usage and cloud spend
• Confidence working in infrastructure-as-code workflows (Terraform preferred)
• Familiarity with containerisation technologies like Docker and Kubernetes
• Experience scripting or automating repetitive tasks
• Strong communication and documentation skills

Bonus Points for

• Familiarity with orchestration platforms like Airflow and/or Databricks Workflows
• Prior experience in a FinOps role or cost responsibility as part of a platform or infrastructure team
• An interest in cryptocurrency and/or blockchain technology

Job Benefits

How we work:

• Hybrid working and the option to work from almost anywhere for up to 90 days per year
• £500 Remote working budget to set up your home office space

Learning & Development:

• $1,000 Learning & Development budget to use on anything (agreed with your manager) that contributes to your growth and development

Vacation/ Leave:

• Holidays: 25 days of annual leave + bank holidays
• An extra day for your birthday
• Enhanced parental leave: we provide eligible employees, regardless of gender or whether they become a parent by birth or adoption, 16 weeks fully-paid leave and leave.

Benefits:

• Private Health Insurance - we use Vitality!
• Full access to Spill Mental Health Support
• Life Assurance: we hope you will never need this - but our cover is for 4 times your salary to your beneficiaries
• £100 Crypto for you!
• Cycle to Work Scheme