SMTP Postfix SME CGEMJP00320193

Job Title: NGET SCADA SMTP Postfix SME Location: Birmingham, Hybrid working model Duration: 27/02/2026 Rate: £550.00 inside IR35 - via Umbrella company MUST EITHER HOLD OR BE ELIGIBLE FOR SC CLEARANCE We are seeking a highly skilled and hands-on Postfix SMTP Relay Engineer to design, document, build, and deploy an on-premises email relay infrastructure using Postfix. The successful candidate will have deep expertise in SMTP protocols, mail routing, and secure mail server configuration, as well as experience working with Low-Level Design (LLD) documentation. You will be responsible for implementing a robust, secure, and scalable Postfix-based relay solution that integrates seamlessly with enterprise systems. Key Responsibilities: Design and deploy an on-premises SMTP relay infrastructure using Postfix. Interpret and implement Low-Level Design documentation. Ensure secure mail routing and compliance with enterprise security standards. Integrate Postfix with core enterprise solutions such as VCF, HPE, SIEM, and LDAP/AD. Troubleshoot mail delivery and server performance issues. Automate and monitor processes using scripting (e.g., Bash, Python). Produce comprehensive technical documentation. Required Skills & Experience: Extensive hands-on experience with Postfix in enterprise environments. Strong understanding of SMTP protocols, email routing, and mail security. Proficiency in Linux system administration (RHEL, CentOS, Ubuntu). Experience with TLS, SPF/DKIM/DMARC, and SASL protocols. Ability to integrate Postfix into enterprise systems (VCF, HPE, SIEM, LDAP/AD). Strong troubleshooting and problem-solving skills. Scripting experience for automation and monitoring (Bash, Python). Excellent technical documentation skills. Preferred Qualifications: Knowledge of high availability, load balancing, and mail queue management. Familiarity with email archiving, retention policies, and compliance frameworks