Mail Infrastructure Engineer (MTA Specialist) (worldwide remote, work anywhere)

CloudLinux; Barcelona; A distancia; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A leading cloud security company is looking for a Mail Systems Engineer to design MTA architecture and troubleshoot performance issues. This is a fully remote position offering flexible hours. Ideal candidates should have expert-level knowledge of Postfix / Exim and solid experience with large-scale clusters. Additional benefits include professional development budgets and unlimited sick leave.

Servicios

Professional development focus

Fully remote work with flexible hours

24 days paid vacation and unlimited sick leaves

Compensation for private medical insurance

Education budget

Formación

• Expert-level knowledge in Postfix / Exim systems is required.
• Experience operating large-scale clusters necessary.
• A solid understanding of SMTP is mandatory.

Responsabilidades

• Design MTA architecture focusing on Postfix / Exim.
• Write advanced configurations for IP binding and routing.
• Troubleshoot delivery and performance issues.

Conocimientos

Expert-level Postfix / Exim knowledge

Experience with large-scale clusters

Deep SMTP understanding

Linux systems proficiency

Upper-intermediate+ English

Herramientas

Bash

Python

Perl

Docker

Descripción del empleo

Overview

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 -

Responsibilities

• 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.

Qualifications

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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