Overview In this role you will own and evolve the enterprise mail environment for an international workforce. You will operate and optimize Microsoft 365 and Exchange Online services, while strengthening security and reliability across the messaging platform. You'll work closely with security, product, and operations teams to drive secure, scalable email capabilities and secure gateways.

You will shape the future of enterprise messaging at SD Worx and contribute to cross-functional initiatives with a security-first mindset.

Compensaciones / Incentivos Comprehensive training and development programs

Flexible working schedule

Private medical insurance 100% covered by SD Worx

25 vacation days

18 hours for personal matters

Reduced summer hours: 36 hours/week for 4 weeks (July/August) to choose from? (as stated)

Responsabilidades

Manage, maintain and improve the enterprise mail infrastructure for an international workforce

Operate and optimize Microsoft 365 and Exchange Online mail services including mail flow, connectors, and transport rules

Strengthen security posture using SPF, DKIM, DMARC, TLS, secure SMTP and other email authentication technologies

Manage and improve email security solutions (anti-spam, anti-phishing, malware protection, 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 issues

Contribute to simplification, standardization and documentation of the mail landscape

Collaborate with Product Owners, security, infrastructure, 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

Requisitos principales 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/anti-phishing/malware protection

Knowledge of mass mailing platforms, sender reputation management, and 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 English communication, ability to explain technical concepts to diverse stakeholders

Experience in Agile and international environments

Ability to work independently and manage multiple priorities

Analytical and proactive problem-solving

Clear communication and ability to explain technical concepts to non-technical audiences

Collaborative mindset across international teams

Microsoft 365 administration

Exchange Online administration

Mail flow, connectors, and transport rules

📌 Senior Mail Engineer (Málaga)
🏢 Sd Worx
📍 Málaga