Full-Time Senior Systems Engineer

DomainTools is seeking a dynamic Senior Systems Engineer passionate about operational excellence in hybrid cloud and bare metal infrastructure, automation, and team-building. Help build tools and processes to accelerate security product management, operation, and delivery.

We leverage open source technologies in public and private cloud environments. Our engineers are open-source enthusiasts and veteran generalists eager to solve infrastructure problems across the stack. Key focus areas include:

• Migrating traditional services to Kubernetes-based hybrid cloud.
• Automating deployments to bare metal hosts and services.
• Modernizing monitoring and observability tools.
• Building tools and processes for internal customers.

We collaborate across engineering teams, offering broad and diverse technical experience. This is an opportunity to learn, collaborate, and impact significantly within a great team.

Responsibilities:

• Build and operate Linux-based systems (public cloud and colocation).
• Manage the lifecycle of open-source and custom services (authentication, logging, metrics, code repos, secrets management).
• Modernize infrastructure by migrating to containers or writing IaC automation (VMs/bare-metal).
• Partner with engineering teams to build self-service tools for faster and safer value delivery.
• Improve system visualization through monitoring, metrics, instrumentation, and logs.
• Manage and monitor databases and data flows (replication, high availability).
• Mentor engineers and improve team delivery ability.
• Reduce business risk by implementing security and business continuity compliance.
• Write and maintain operational documentation.
• Participate in on-call rotation.

Requirements:

• 5+ years experience in Linux systems engineering.
• Experience migrating custom services into containers.
• Infrastructure management experience in public cloud and physical environments (IaC tools).
• Proven ability to automate tasks with scripts, config management, and CI/CD.
• Solid understanding of networking and storage.
• Documentation and process building skills for team contribution.
• SaaS product support experience.
• Prioritization skills and ability to tackle ambiguous/complex problems.
• Strong team collaboration skills and focus on operational excellence.
• Familiarity with big data and relational databases.

Relevant Technologies:

• Compute: CentOS/Rocky Linux, AWS (EC2, S3, Glacier), OpenStack, Nutanix, KVM, ZFS
• Languages: Bash, Python
• DevOps: Ansible, Terraform, GitLab, Hashicorp Vault/Consul
• Containers & Orchestration: Kubernetes, Docker/Podman, Airflow
• Monitoring/Metrics: Icinga/Nagios, Graphite, Grafana, CollectD, AWS CloudWatch
• Logging: ELK/OpenSearch, Splunk, Syslog, Journald
• Load Balancing: Nginx, HAProxy, Keepalived
• Big Data: Hadoop, Kafka, MinIO
• Databases: MySQL/MariaDB/Galera

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