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Struggling with a broken cross-tenant sync, a mailbox permission that shouldn't be failing, or an identity conflict no one can trace? That's exactly the kind of problem I resolve. I'm a Microsoft 365 engineer specializing in Entra ID (Identity) and Exchange Online, with 5,000+ hours of hands-on support, $300K+ earned, and a 100% Job Success Score. I focus on the complex, hard-to-diagnose cases — the ones that don't have a documented fix. Recent problems I've solved: - Cross-tenant synchronization identity collision — traced and resolved an alternativeSecurityIdentifier conflict blocking user provisioning across merged tenants. - Exchange Online RBAC misconfiguration — diagnosed a Delegating vs. Regular role assignment issue that was silently breaking admin permissions. What I do: - Entra ID / Identity — hybrid identity, Conditional Access, cross-tenant sync, provisioning conflicts, MFA/SSO, SSPR - Exchange Online — mail flow, RBAC, transport rules, mailbox permissions, DMARC/SPF/DKIM authentication - Migrations — tenant-to-tenant and cross-platform (M365 ⇄ Google Workspace), including identity setup, mail flow cutover, and SPF/DKIM/DMARC configuration to prevent post-migration deliverability issues - PowerShell — user provisioning, license management, and reporting automation - Broader M365 — Teams (Associate certified), SharePoint/OneDrive, plus tenant-wide administration Certifications: MS-900, MS-700, Microsoft Teams Administrator Associate. MS-102 (Administrator Expert) in progress. I work in English, Spanish, and Japanese (JLPT N1). If you have a Microsoft 365 issue that's been open too long, send me the details and I'll tell you how I'd approach it. Happy to answer any questions.

IT Professional with almost 10 years of experience specialized in Microsoft technology, started as an ASP.NET and SharePoint developer and went to Office 365 and Windows administrator. I have an MCSD in SharePoint Apps and Web Apps, extensive experience in developing and managing .NET applications, SQL Server, Windows Server and client versions. The last 4 years I've been working as an Office 365 consultant and administrator, configuring Azure AD syncs, assigning licenses, managing Exchange Online, SharePoint Online, among other services and integration. Additionally, I have experience implementing and managing resources in Azure like VMs, appliances and Azure Web Services, working with VMware solutions and backup software like Backup Exec.

Linux Systems Administrator | AWS | Automation | Monitoring | Sendgrid | Plesk Experienced Linux Systems Administrator with over 5 years supporting production environments, automation workflows, and secure cloud infrastructure. 🔧 Key Skills & Focus Areas: - Strong expertise in Oracle Linux-based systems (RHEL, CentOS), with security hardening using Fail2Ban and CrowdSec. - Backup strategy design and management with MinIO and AWS S3 (including S3 replication). - Proficient in AWS services (EC2, S3, CloudWatch) – including monitoring, optimization, and troubleshooting. - Hands-on experience supporting RESTful API integrations and diagnosing service-level issues. - Zabbix monitoring expert – setup, alerting logic, automation, and critical incident handling. - MySQL administration (intermediate). - Bash scripting for operational automation. - MikroTik firewall administration and basic networking support. - Mail marketing, SSL, Sendgrid, Apache, Nginx (Hostinger, Hostgator, Plesk) - Experience delivering tailored training and documentation to internal teams or clients. 🚀 Currently supporting IT operations in a production environment, and available for: - Remote freelance projects (evenings/weekends) - Urgent server support or infrastructure troubleshooting - Ongoing DevOps or Linux administration tasks Let’s connect and explore how I can help secure, optimize, or scale your systems.

Experienced Network and VoIP professional with a strong background in providing tier 3 technical support across a wide range of telecommunications technologies, including TDM, SIP, SS7, and Unified Communications (UC). Adept at diagnosing and resolving complex network issues, ensuring the reliability and efficiency of VoIP services, and maintaining robust communication infrastructures. Proficient in managing and optimizing both traditional and modern telecommunications systems, with a proven track record of delivering high-quality technical support to internal teams and external clients. Additionally, possess a solid understanding of cloud computing, with experience in integrating VoIP services with cloud platforms to enhance scalability and operational flexibility. Recognized for the ability to bridge the gap between legacy systems and modern technologies, providing innovative solutions that meet evolving business needs.