Job Summary: We are seeking a Senior Security Engineer to ensure the stability of Microsoft 365 environments, providing technical guidance and managing operational incidents. Key Highlights: 1. Lead security in Microsoft 365 environments. 2. Collaborate with global teams and define new M365 capabilities. 3. Advanced incident resolution and patch testing. We are looking for a Senior Security Engineer | Hybrid (CABA) C&S is currently searching for a Senior Security Engineer to work on a global project focused on ensuring the stability and security of Microsoft 365 environments within the managed services of a renowned international company. Mode: Hybrid (offices in CABA) Schedule: Full Time, 9 a.m. to 6 p.m. (Monday to Friday) Employment Type: Indefinite-term contract What will be your responsibilities? Provide technical and process guidance on technologies related to Exchange and O365. Collaborate with product management, delivery center administrators, and engineering teams to ensure alignment with global strategy. Define the technical aspects of new Microsoft 365 capabilities that meet business requirements. Perform advanced resolution of operational incidents and patch testing to guarantee messaging service stability. What do we expect from you? Advanced knowledge of Microsoft 365 (mandatory). Solid technical experience in SMTP and Exchange/Microsoft 365 configuration (mandatory). Knowledge of Defender for Office 365 (mandatory). Advanced English (C1 level, mandatory). Ability to manage multiple tasks, proactivity, attention to detail, and operational efficiency. Desired Skills: Experience with Proofpoint Enterprise Protection (including Targeted Attack Protection). Experience collaborating with cross-functional teams in global environments. What do we offer? Top-tier medical coverage. Periodic salary reviews. Bonuses for internet, birthdays, and other benefits. Access to the UDEMY platform for training. Provision of work equipment and welcome kit.-Requirements- Minimum Education: University degree 5 years of experience Languages: English Age: between 25 and 75 years Willingness to travel: Yes Keywords: engineers, ingeniera, ing, engineer, escolta, guardia, vigilante, guarda, guard, vigilancia