Site Reliability Engineer (SRE) - Email

The Calyx Institute is seeking applications for a skilled and motivated Site Reliability Engineer (SRE) - Email to join our Engineering Team. This SRE role will be primarily responsible for building and maintaining Calyx’s email infrastructure, functioning as both developer and product owner of both internal and membership platform transactional email services. This position will play a key role in ensuring that email is safe, reliable and secure. This SRE role will report to the Senior SRE, and regularly coordinate with other Calyx team members in Engineering and across other program areas.

Calyx values a diverse range of experiences and are open to candidates who may not meet all listed requirements but have the potential to thrive in this role.

Key responsibilities and required skills for this role include, but are not limited to:

• Experience (or interest in learning) Email server building, maintenance, design. Particularly with containerized mail solutions like stalwart (https://stalw.art/)
• Git: functional knowledge of forking, branching, merging, reviewing, and rebasing
• Ansible: understanding and experience with the concept of infrastructure as code, building/deploying containers and services using ansible
• SSH, BASH, LINUX/UNIX, L2-L4 Networking, FOSS tools/solutions, CLI expertise
• Containers: experience/interest in CNCF projects (RKE2, Harvester, Traefik, etc.)
• RAS-based (Reliability, Availability and Serviceability) approach to design, deployment, and maintenance of infrastructure
• Comfortable with stand-up review of written code and justification/critique of methods
• Participate/engage in continuous refactoring and addressing technical debt
• Four-year degree (or equivalent) in an operations or technical field (operations management, engineering, maths, sciences, etc.)
• Graduate degrees and professional certifications are a plus

Preferred Skills and Qualifications

• Designing and building applications for container-native deployment strategies
• CI/CD: Design and maintenance of a CI/CD pipeline (using Jenkins, Zuul, etc.)
• Experience with deployments on tier-1 public clouds (i.e. GCP, AWS, Azure, etc.), demonstrating a "best practices" approach
• Experience building and deploying container registries
• Hands-on experience with enterprise hardware (metal servers, racking, switches, etc.)
• Container orchestration: Docker, Kubernetes, Traefik, Cert-Manager, Rancher etc.
• Debian: experience with Debian or another apt-based Linux distribution
• RedHat: experience with RHEL or another rpm-based Linux distribution
• Networking: configuring switches (Juniper|CumulusLinux), network optimization, segmentation, BGP routing, DDoS mitigation, and associated IaaS tools, etc.
• Logging: matomo, ELK, Prometheus, etc.
• Applications: Nextcloud, Zammad, Tor, NGINX, mailservers, gitea or gitlab, SnipeIT
• Communications: Signal, Mattermost, XMPP, etc.
• Organized with excellent attention to detail
• General knowledge of Internet technologies and security tools
• 3+ years professional experience in similar roles
• Ability to communicate in spoken and written English
• Ability to work both independently and as part of a team
• Willingness to take ownership of work responsibilities

Details & To Apply

This is a full-time, salaried, exempt, remote position, requiring work authorization in the U.S. Calyx operates in the following states: Washington, Virginia, Massachusetts, New York or Florida. Preference will be given to candidates residing in the states where Calyx operates, and occasional travel to Seattle, WA will be required. The salary range is $125,000 - $135,000, commensurate with experience and qualifications. Calyx offers health, vision, and dental insurance, HRA and Transportation FSA options, unlimited vacation, and 401k retirement plan options with up to 10% employer matching contribution. Additionally, Calyx operates on a four-day work week. This position is included in a union-represented collective bargaining unit (CWA Local 1101), and specific employment terms and conditions are subject to collective bargaining.

To apply, submit your required application materials via the link to Greenhouse below. No applications submitted via email will be considered. Applications will be reviewed on a rolling basis until the deadline.

Required materials:

• 1-2 page CV/resumé in PDF format
• Three professional references with contact information (we will not contact references without informing you first)

Optional materials:

• 1 page, relevant Cover Letter in PDF format

Application Deadline: June 20, 2025

Start Date: on or around August 1, 2025