administration skills. Experience of VMware vSphere virtualisation systems. Good understanding and ability to perform root cause analysis across a range of protocols and topologies (TCP/IP, HTTP & HTTPS, SMTP, FTP, DNS, DHCP, X500) . Knowledge of ITIL (ITIL Foundation certificate or experience working in ITIL environments). Previous experience of project delivery & implementation of detailed designs. Knowledge of MoD More ❯
. Experience with both Windows Server systems administration (Active Directory, RADIUS, PowerShell); and Linux systems administration (Ubuntu, Apache2, OpenSSL). Experience with different email configurations and management (DMARC, SPF, SMTP, IMAP). Additional experience with database administration (SQL Server, Oracle); MS 365 administration; virtual machine hosting; and Azure would be beneficial. The role is particularly people-facing, so good communication More ❯
multi-tier web applications, relational databases, firewalls, VPNs, and enterprise AntiVirus products. Understanding of networking principles including TCP/IP, WANs, LANs and commonly used Internet protocols such as SMTP, HTTP, FTP, POP, LDAP. Entry level cyber security certification (e.g. CompTIA Security+, CEH, CPSA). CREST Practitioner Intrusion Analyst/Blue Teams Level 1 or other SOC related certifications. Completed More ❯
and technologies. CCNA certification (required); CCNP or other advanced networking certifications (desirable). Familiarity with network monitoring and diagnostic tools. Proficiency in Windows OS, Server OS, and Microsoft Exchange (SMTP, POP3, IMAP). Experience with Active Directory, Group Policy, and Office 365. Excellent problem-solving and analytical skills. Full, clean UK driving licence. Ability to pass a DBS check. Key More ❯
Employment Type: Full-Time
Salary: £40,000 - £450,000 per annum, Inc benefits
Paignton, Devon, United Kingdom Hybrid/Remote Options
Curo Services
and adapt to new technologies Desirable: Background in GNSS Positioning Experience working with Windows, Linux and Git Knowledge of IQ signal data and networking protocols (TCP/IP, DNS, SMTP, HTTP) Experience with open-source software development and system engineering Understanding of Inertial technology Advanced mathematical skills To apply for this Software Engineer permanent job, please click the button below More ❯
London, South East, England, United Kingdom Hybrid/Remote Options
vertex-it-solutions
and system patching. Manage and maintain our Windows and Linux (CentOS, Red Hat, Ubuntu) server estate, as well as core Microsoft services (AD, GPO, DNS, NPS/Radius, CA, SMTP Relay), and our extensive VMware vSphere/vCenter virtualisation platform. Administer and optimise our System Centre Configuration Manager (SCCM) hierarchy, including Primary/Secondary sites, Distribution Points, Cloud Management Gateway More ❯
Stevenage, Hertfordshire, South East, United Kingdom Hybrid/Remote Options
MBDA
identify root cause from (TBC for review - Demonstrable understanding of the OSI Reference Model and the network communication protocols, including but not limited to DNS, HTTP/S, SSL, SMTP, FTP/S, LDAP/S. Demonstrable experience with Security Information Event Monitoring Tools and/or Network Packet Capture tools). Our company: Peace is not a given, Freedom More ❯
Testing and evaluating new technology; Skills Required: Excellent understanding of providing outstanding customer service; Experienced in latest Windows and Server operating systems; Experienced in latest Microsoft Exchange technologies including: SMTP, POP3 & IMAP; Working knowledge of Active Directory, TCP/IP Networking, IP Routing & latest MS Office applications, practical experience using DNS & DHCP; Excellent communication skills and ability to work independently More ❯
Managing VMWare and virtualised systems Managing Windows servers, Active Directory, DHCP, DNS, and IIS Hands-on experience with SAN, enterprise compute, and OS patching Strong understanding of DNS, HTTP, SMTP, and SNMP Excellent communication, attention to detail, and problem-solving skills This is a great time to be part of a forward-thinking team driving innovation in cloud infrastructure. We More ❯
directed by senior staff Skills & Experience: Commercial experience in IT support Strong customer service and communication skills Full, clean UK driving licence Proficiency in Windows, Server OS, Microsoft Exchange (SMTP, POP3, IMAP) Working knowledge of Active Directory, TCP/IP, IP Routing, DNS, DHCP Familiarity with Microsoft Office applications Ability to pass a DBS check MCSE and/or CCNA More ❯
Managing VMWare and virtualised systems Managing Windows servers, Active Directory, DHCP, DNS, and IIS Hands-on experience with SAN, enterprise compute, and OS patching Strong understanding of DNS, HTTP, SMTP, and SNMP Excellent communication, attention to detail, and problem-solving skills This is a great time to be part of a forward-thinking team driving innovation in cloud infrastructure. We More ❯
Eastleigh, Hampshire, South East, United Kingdom Hybrid/Remote Options
Spectrum It Recruitment Limited
Managing VMWare and virtualised systems Managing Windows servers, Active Directory, DHCP, DNS, and IIS Hands-on experience with SAN, enterprise compute, and OS patching Strong understanding of DNS, HTTP, SMTP, and SNMP Excellent communication, attention to detail, and problem-solving skills This is a great time to be part of a forward-thinking team driving innovation in cloud infrastructure. We More ❯
Managing VMWare and virtualised systems Managing Windows servers, Active Directory, DHCP, DNS, and IIS Hands-on experience with SAN, enterprise compute, and OS patching Strong understanding of DNS, HTTP, SMTP, and SNMP Excellent communication, attention to detail, and problem-solving skills This is a great time to be part of a forward-thinking team driving innovation in cloud infrastructure. We More ❯
Surrey, England, United Kingdom Hybrid/Remote Options
Hawksworth
CRISC Good working knowledge of NIST and COBIT frameworks Data centre/network and workplace architectures Security tooling, risk analysis, or governance roles TCP/IP, HTTP/S, SMTP), proxy servers, email gateways, firewalls, and routing devices. ISO 27001, NIST, CIS Controls, and ITIL. Languages such as (e.g., PowerShell, Python) for configuration and compliance checks. Vulnerability management tools and More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Hawksworth
CRISC Good working knowledge of NIST and COBIT frameworks Data centre/network and workplace architectures Security tooling, risk analysis, or governance roles TCP/IP, HTTP/S, SMTP), proxy servers, email gateways, firewalls, and routing devices. ISO 27001, NIST, CIS Controls, and ITIL. Languages such as (e.g., PowerShell, Python) for configuration and compliance checks. Vulnerability management tools and More ❯
CRISC Good working knowledge of NIST and COBIT frameworks Data centre/network and workplace architectures Security tooling, risk analysis, or governance roles TCP/IP, HTTP/S, SMTP), proxy servers, email gateways, firewalls, and routing devices. ISO 27001, NIST, CIS Controls, and ITIL. Languages such as (e.g., PowerShell, Python) for configuration and compliance checks. Vulnerability management tools and More ❯
Guildford, England, United Kingdom Hybrid/Remote Options
Hawksworth
in IT including hands-on with security tooling, risk analysis, or governance roles within complex enterprise environments. Strong understanding of communication protocols (e.g., TCP/IP, HTTP/S, SMTP), network architecture and security technologies. Hands-on experience with proxy servers, email gateways, firewalls, and routing devices. Familiarity with industry standards and frameworks such as ISO 27001, NIST, CIS Controls More ❯
Genesys Cloud updates. Ensure compliance with SLAs and provide timely resolution of incidents and service requests. Configure and tro ubleshoot: SIP, WebRTC protocols and Polycom handsets, Email routing via SMTP, SSO/AD integrations and Automated Bots, Chat, SMS, Facebook, WhatsApp integrations Work with external support/deployment teams on overall solution and installation Write and execute test plans Competencies More ❯
Maidstone, Kent, South East, United Kingdom Hybrid/Remote Options
Apogee Corporation**
Natural trouble-shooter who enjoys new challenges Good understanding of solution architecture (load balancing, server queue distribution) Strong knowledge of basic network terms and topology (router, IP addressing, DNS, SMTP, SNMP, IPV4, SMB, WAN, VPN) Able to troubleshoot advanced features of solutions like PaperCut, Equitrac, SafeQ/SafeCom (e.g., Clustering/HA) Competent in Windows and Mac OS Able to More ❯
Surrey, England, United Kingdom Hybrid/Remote Options
Hawksworth
very broad role, so there's no chance you'll be getting bored anytime soon. They need you to have experience across Infrastructure, from networking (TCP/IP, HTTP, SMTP), security, risk, governance, automation, identity & access management...not to mention financial services experience, and ideally insurance. If you're still reading, then great, the wish-list hasn't scared you off More ❯
City of London, London, United Kingdom Hybrid/Remote Options
Hawksworth
very broad role, so there's no chance you'll be getting bored anytime soon. They need you to have experience across Infrastructure, from networking (TCP/IP, HTTP, SMTP), security, risk, governance, automation, identity & access management...not to mention financial services experience, and ideally insurance. If you're still reading, then great, the wish-list hasn't scared you off More ❯
very broad role, so there's no chance you'll be getting bored anytime soon. They need you to have experience across Infrastructure, from networking (TCP/IP, HTTP, SMTP), security, risk, governance, automation, identity & access management...not to mention financial services experience, and ideally insurance. If you're still reading, then great, the wish-list hasn't scared you off More ❯
Birmingham, England, United Kingdom Hybrid/Remote Options
Undisclosed
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 … 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 More ❯
City, Birmingham, United Kingdom Hybrid/Remote Options
Experis
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 … 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 More ❯