Cloud Infrastructure Engineer

This is a fully remote position, open to applicants in United Kingdom.

📋 Description

• Designing, constructing, and maintaining AWS infrastructure utilizing Terraform (EC2, RDS, S3, SQS, Lambda, ALB, ElastiCache, Route 53, VPC networking)

• Writing and sustaining Puppet modules to configure and manage fleets of EC2 instances across various auto-scaling groups

• Maintaining and enhancing Python-based automation and tooling that facilitates platform operations

• Operating and refining distributed service discovery and configuration management (etcd)

• Managing and optimizing a multi-tier caching strategy (Varnish, Redis/Valkey, PHP OPcache)

• Running and scaling our observability stack (Prometheus, Grafana, Loki, Fluentd, PagerDuty) and participating in on-call rotations

• Evaluating and implementing distributed storage solutions as the platform progresses

• Enhancing deployment workflows and release processes

• Collaborating with internal teams on API contracts, integration patterns, and operational tooling

• Engaging in incident response, root cause analysis, and platform reliability enhancements

⛳️ Requirements

• Extensive experience with AWS services in a production environment — particularly EC2, RDS, S3, SQS, Lambda, ALB, ElastiCache, Route 53, IAM, and VPC networking

• Expertise in authoring and maintaining Terraform modules for production infrastructure

• Proficiency in writing and sustaining Puppet modules (or similar agent-based configuration management) for fleet management

• Strong Python skills — you will be developing and maintaining production daemons, not just scripts

• In-depth knowledge of Linux systems (Ubuntu) — comfortable with Apache/Nginx, PHP-FPM, Varnish, systemd, filesystem mounts, and networking fundamentals

• Understanding of distributed systems concepts: consensus, leader election, distributed locking, eventual consistency, and the associated trade-offs

• Proficient in building and maintaining observability pipelines (Prometheus, Grafana, Loki, or equivalent) in a production setting

• Comfortable working within a GitLab-based CI/CD workflow

• Clear communicator who can document architectural decisions and convey technical trade-offs to both technical and non-technical stakeholders

• Practical experience with distributed storage systems such as Ceph, GlusterFS, JuiceFS, CubeFS, or AWS EFS — especially in the context of migration or evaluation

• Familiar with etcd (or similar distributed key-value stores like Consul or ZooKeeper) including watch APIs, TTL-based locking, and cluster operations

• Experience with Varnish and VCL, particularly dynamic backend routing or multi-tenant configurations

• Working knowledge of PHP — not for application development, but to understand and maintain integration scripts that connect infrastructure and application layers

• Background in multi-tenant SaaS platform design — particularly database-per-tenant models on shared infrastructure

• Familiarity with Moodle LMS or educational technology platforms

• Experience with secrets management solutions (AWS Secrets Manager, HashiCorp Vault, Parameter Store) and automated credential rotation

• Experience in designing zero-downtime deployment strategies for VM-based (non-containerized) environments

🏝️ Benefits

• Equal employment opportunity

• Affirmative action employer