Simple Mail Transfer Protocol (SMTP) Architect / SME

Experis UK • England, England, GB • 3d ago

Role Title: Simple Mail Transfer Protocol (SMTP) Architect / SME
Location: Remote - Occasional Travel to client site in Warwick.
Duration: 15/09/2025 with potential to extend and join Build team.
Clearance: Active SC / SC Eligible
Rate: £575 per day - PAYE via Umbrella Only

Role Description:
Urgently required to lead/support SMTP Detailed Design and maybe build.
Must have experience of Postfix. A Linux SME with knowledge of RHEL and Dovecot/Postfix with emphasis on Message Transfer Agent "satellite" configuration for on-premises deployment and operating between closed domains (i.e. no SaaS or email gateway to internet). The SME is responsible for the low level design and build documents for a Red Hat Postfix satellite MTA and to implement the solution.

Key Skills:

Strong understanding of SMTP and Message Transfer Agents
Experience of Dovecot and Postfix
Experienced in Low Level Design and Build documentation.
Experienced in build and configuration on Linux within a Broadcom VCF (VMware virtual platform).
Excellent communication and interpersonal skills.
Strong understanding of security best practices.
Strong understanding of DNS records and mail security and validation (MX, DKIM, DMARC)

Desirable Skills:

Experience with on-premises-based mail solutions.
Knowledge of hybrid on-premises to SaaS mail services
Excellent coordination and collaboration with infrastructure teams.
Understanding of security and risk implication around email relaying.

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