Cloud Infrastructure Engineer

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

📋 Description

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

• Developing and maintaining Puppet modules to configure and oversee fleets of EC2 instances across various auto-scaling groups

• Sustaining and enhancing Python-based automation and tools that facilitate platform operations

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

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

• Managing and scaling our observability stack (Prometheus, Grafana, Loki, Fluentd, PagerDuty) and taking part in on-call rotations

• Assessing and implementing distributed storage solutions as the platform progresses

• Enhancing deployment workflows and release procedures

• Collaborating with internal teams on API agreements, integration patterns, and operational tools

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

⛳️ Requirements

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

• Expertise in creating and maintaining Terraform modules for production infrastructure

• Proficiency in authoring and maintaining Puppet modules (or similar agent-based configuration management) for fleet oversight

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

• Comprehensive Linux systems knowledge (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 tradeoffs

• Skilled in constructing and maintaining observability pipelines (Prometheus, Grafana, Loki, or similar) in a production environment

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

• Effective communicator who can document architectural choices and articulate 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 — particularly related to migration or assessment

• Familiarity with etcd (or comparable distributed key-value stores like Consul or ZooKeeper), including watch APIs, TTL-based locking, and cluster management

• Experience with Varnish and VCL, particularly in 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 — especially 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

• Open LMS is an equal employment opportunity/affirmative action employer and considers qualified applicants for employment without regard to race, gender, age, color, religion, national origin, marital status, disability, sexual orientation, or any other protected factor.