Senior Mail Engineer

SD Worx; Málaga; On-site; EUR 55,000 - 85,000; Full time

Job summary

SD Worx is seeking a Senior Mail Engineer to join our Workplace Services Engineering team. You will own the enterprise mail environment, working with Microsoft 365 and Exchange Online, mail security solutions, and mass mailing platforms to deliver secure, reliable messaging for a global workforce.

You will collaborate with security, infrastructure, and product teams to drive improvements, governance, and documentation while supporting international scale and cross-country initiatives.

Qualifications

• Minimum 5 years of experience with enterprise messaging platforms and mail infrastructure.
• Strong hands-on experience with Microsoft 365 and Exchange Online administration.
• Solid understanding of mail flow, connectors, transport rules, and hybrid messaging environments.
• Proven experience troubleshooting complex mail delivery, routing, and authentication issues.
• Hands-on expertise with SPF, DKIM, DMARC, TLS, and secure SMTP.
• Experience with secure email gateways and anti-spam/malware protection solutions.
• Knowledge of mass mailing platforms, sender reputation, and email deliverability best practices.
• Experience providing third-line support within incident, problem, and change management processes.
• Strong analytical and troubleshooting skills; proactive, solution-oriented mindset.
• Excellent English communication; ability to explain technical concepts to varied stakeholders.
• Experience in Agile and international environments.
• Ability to work independently with multiple priorities and drive improvements.

Responsibilities

• Manage and improve the enterprise mail infrastructure for an international workforce.
• Operate Microsoft 365 and Exchange Online mail services, including mail flow, connectors, and transport rules.
• Strengthen the security posture of the mail environment using SPF, DKIM, DMARC, TLS, and secure SMTP.
• Manage email security solutions including anti-spam and anti-phishing protections.
• Support bulk/mass mailing platforms, ensuring deliverability and sender reputation.
• Provide third-line support for complex mail delivery, routing, and authentication issues.
• Contribute to standardization and documentation of the mail landscape.
• Collaborate with Product Owners, security/infrastructure teams, vendors, and support teams.
• Support projects, upgrades, migrations, and service improvement initiatives.
• Act as liaison for integrations between mail platforms and other enterprise services.

Skills

Microsoft 365

Exchange Online

Email security

SPF/DKIM/DMARC

Hybrid messaging

Mail infrastructure

Bulk/mass mailing

Incident management

Agile environment

English communication

Job description

SD Worx is a leading European provider of Payroll & HR services with global reach. We have offices across Europe and in Mauritius. Our purpose is to bring people solutions to life, enabling organisations of all sizes to turn Human Resources into a source of value for both the business and its people.

Our people solutions cover the entire employee journey – from getting people paid to attracting, rewarding and developing talent.

About the role:

We are seeking a Senior Mail Engineer to join our Workplace Services (WPS) Engineering team within Business Technologies. The team is responsible for delivering secure, reliable, and future-ready enterprise messaging services across SD Worx, supporting more than 10,000 employees internationally. In this role, you will take ownership of the engineering, security, and operational excellence of our enterprise mail environment. You will work with Microsoft 365 and Exchange Online technologies, mail security solutions, and mass mailing platforms while helping shape the future of enterprise messaging within SD Worx. This is an excellent opportunity for an experienced professional who combines strong technical expertise with a security-first mindset and enjoys working in an international environment.

Which tasks can you expect?

• Manage, maintain, and improve the enterprise mail infrastructure supporting an international workforce.
• Operate and optimize Microsoft 365 and Exchange Online mail services, including mail flow, connectors, and transport rules.
• Strengthen the security posture of the mail environment using SPF, DKIM, DMARC, TLS, secure SMTP, and other email authentication technologies.
• Manage and improve email security solutions, including anti-spam, anti-phishing, malware protection, and secure email gateways.
• Support and optimize bulk communication and mass mailing platforms, ensuring deliverability and sender reputation.
• Provide third-line support for complex mail delivery, routing, authentication, and security-related issues.
• Contribute to the simplification, standardization, and documentation of the mail landscape.
• Collaborate with Product Owners, security teams, infrastructure teams, vendors, and support teams to improve platform reliability and security.
• Support projects, upgrades, migrations, and service improvement initiatives.
• Act as a point of contact for integrations between mail platforms and other enterprise services.
• Participate in the future roadmap and evolution of enterprise messaging services.
• Create and maintain technical documentation, procedures, standards, and operational handover materials.

What do you have to offer?

• Minimum 5 years of experience working with enterprise messaging platforms and mail infrastructure.
• Strong hands‑on experience with Microsoft 365 and Exchange Online administration.
• Solid understanding of mail flow, connectors, transport rules, and hybrid messaging environments.
• Proven experience troubleshooting complex mail delivery, routing, and authentication issues.
• Hands‑on expertise with email security technologies such as SPF, DKIM, DMARC, TLS, and secure SMTP.
• Experience working with secure email gateways and anti‑spam, anti‑phishing, and malware protection solutions.
• Knowledge of mass mailing platforms, sender reputation management, and email deliverability best practices.
• Experience providing third‑line support and working within incident, problem, and change management processes.
• Strong analytical and troubleshooting skills with a proactive, solution‑oriented mindset.
• Excellent communication skills in English and the ability to explain complex technical concepts to both technical and non‑technical stakeholders.
• Experience working in Agile and international environments.
• Ability to work independently, manage multiple priorities, and continuously drive improvements.
• Be part of a European leader in Payroll and HR solutions.
• Influence how Technology teams operate at scale.
• Work with experienced leaders and product professionals across multiple countries.
• Help shape modern product operating practices and continuous improvement across the organisation.
• Join a culture that values autonomy, collaboration, innovation, and learning.

SD Worx values diversity and inclusion in the workplace. We welcome applications from all qualified candidates regardless of origin, nationality, gender, gender identity, sexual orientation, age, disability, religion, ethnic or social background, or stage of life.

All hiring decisions are based on skills, experience and role‑related qualifications.

Salary range information will be shared during the initial interaction with the Talent Acquisition team, either by phone or email.