Mail Systems Engineer

25 Minutes ago • All levels

Job Summary

Job Description

CloudLinux is a global remote-first company focused on Linux infrastructure and security products. You will join the Imunify Email team, building high-performance tools for spam detection and email infrastructure protection. As a Mail Systems Engineer, you will design MTA architecture, write advanced configurations for routing and IP binding, and troubleshoot delivery and performance issues, optimizing for high throughput. This role offers professional development, challenging projects, fully remote work, generous leave, medical insurance compensation, and education budget.
Must have:
  • Design MTA architecture (Postfix/Exim)
  • Write advanced configs for routing, transports, IP binding
  • Troubleshoot delivery and performance issues - Optimise for high throughput
Good to have:
  • Scripting (Bash/Python/Perl)
  • Familiarity with SPF/DKIM/DMARC
  • Knowledge of C
  • Docker/cloud exposure
Perks:
  • A focus on professional development
  • Interesting and challenging projects
  • Fully remote work with flexible working hours, that allows you to schedule your day and work from any location worldwide
  • Paid 24 days of vacation per year, 10 days of national holidays, and unlimited sick leaves
  • Compensation for private medical insurance
  • Co-working and gym/sports reimbursement
  • Budget for education
  • The opportunity to receive a reward for the most innovative idea that the company can patent

Job Details

Description

CloudLinux is a global remote-first company. We are driven by our principles: do the right thing, employees first, we are remote first, and we deliver high-volume, low-cost Linux infrastructure and security products that help companies to increase the efficiency of their operations. Every person on our team supports each other and does what we can to ensure we are all successful.

You will join the Imunify Email team - the creators of a smart, automated email protection system designed to ensure clean outbound traffic and preserve IP reputation for hosting providers. Our focus is on building high-performance tools for spam detection, email infrastructure protection, and scalable deliverability.

Check out our website for more information about our Imunify Product -

As our Mail Systems Engineer, you will:

  • Design MTA architecture (Postfix/Exim).
  • Write advanced configs for routing, transports, IP binding.
  • Troubleshoot delivery and performance issues - Optimise for high throughput.

Requirements

Must-Have Skills:

  • Expert-level Postfix/Exim knowledge.
  • Experience with large-scale clusters.
  • Deep SMTP understanding.
  • Linux systems proficiency.
  • Upper-intermediate+ English.

Nice to Have:

  • Scripting (Bash/Python/Perl).
  • Familiarity with SPF/DKIM/DMARC.
  • Knowledge of C.
  • Docker/cloud exposure.

Benefits

What's in it for you?

  • A focus on professional development
  • Interesting and challenging projects
  • Fully remote work with flexible working hours, that allows you to schedule your day and work from any location worldwide
  • Paid 24 days of vacation per year, 10 days of national holidays, and unlimited sick leaves
  • Compensation for private medical insurance
  • Co-working and gym/sports reimbursement
  • Budget for education
  • The opportunity to receive a reward for the most innovative idea that the company can patent

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About The Company

CloudLinux is on a mission to make Linux secure, stable, and profitable. We have spent more than 500 combined years working on Linux, and are changing how hosting companies and data centers use this technology we love by bringing it to millions of their customers. With more than 500,000 product installations and 4,000 customers, including Liquid Web, 1&1, and Dell, CloudLinux combines in-depth technical knowledge of hosting, kernel development, and open source with unique client care expertise.

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