Hire the Best Windows Administrators
in Bulgaria

Stop wasting money on emails that land in the spam folder. As a Top Rated Plus Email Deliverability Specialist with 15+ years of experience and over 460 successfully completed projects, I help businesses maximize their ROI by ensuring their emails reach the inbox. With a 100% Job Success Score, I bridge the gap between complex technical infrastructure and marketing performance. If your sender reputation is hurting, your IPs are blacklisted, or your open rates are dropping, I provide concrete, technical solutions to fix it. Core Areas of Expertise: * Authentication & Protocols: Advanced setup and troubleshooting of DNS, SPF, DKIM, DMARC, and rDNS across cPanel, Plesk, and custom environments. * Reputation Management: IP/Domain blacklist removal, FBL & Whitelist registrations, and proactive IP reputation monitoring. * ESP Optimization: Fine-tuning SendGrid, Mailchimp, Mandrill, and other major platforms for maximum deliverability. * Infrastructure Setup: Deployment, configuration, and optimization of Interspire Email Marketing and custom sending systems. * System Administration: Deep expertise in Linux and Windows Server environments to ensure bulletproof server-side deliverability. Whether you need a one-time emergency audit to fix a broken sender reputation or ongoing infrastructure monitoring, I deliver results fast and autonomously. Let’s connect to get your emails back where they belong in the Inbox.

Hello, I have experience in a lot of different IT skills, both inside companies and as freelancer : - Office 365. I worked a total almost 5 years, mainly as Subject Matter Expert. I was helping support specialists during their troubleshooting, and was in daily contact with Microsoft to discuss most serious issues. I was supporting support specialists regarding Exchange Online, Skype for Business Online, Active Directory Sync etc. - I'm a fullstack webmaster too. I spent more than 10 years developing websites using PHP, CSS, MySQL, Javascript, and of course HTML. - System Administrator : I have some skills regarding this topic too. For example I'm able to configure basic web servers, and to perform maintenance tasks. I love to learn new things, and that's why I'm very happy to be IT specialist : there is thousand opportunities to learn new amazing things, every day. Don't hesitate to contact me if you have questions. Regards, Lionel

Hi, Welcome to my profile. Dennis BOSHNAKOV, Cybersecurity engineer Core Competencies: • Certified Palo Alto engineer • Certified Barracuda Email Security Gateway engineer • Certified ESET Endpoint Specialist • Certified Sophos firewall engineer • Certified F5 WAF Engineer • Certified Back-end Java developer • Graduated Master's degree in Cybersecurity engineering, Technical University of Sofia, Bulgaria • Certified Network Administrator • Graduated Bachelor's degree in Telecommunications and Network Engineering, Technical University of Sofia, Bulgaria • Certified Ethical Hacker • Certified Tech Support Engineer by ESET • Advanced skills with AML (Anti-Money Laundering systems), laws and regulations Why to hire me: • Professional services. • Friendly behavior. • Experienced in on-time delivery. • 24/7 Support If what you are looking for is not mentioned in the list above, please let me know. I will be glad to help you out. Best regard, Dennis BOSHNAKOV

I am a Microsoft Certified Professional with over 8 years of experience working as a full-time employee in multi-national firms. I worked as a Systems Engineer, Subject Matter Expert Microsoft/Office365 Consultant, Helpdesk Support, and Azure Architect. A fluent English speaker specializing in Active Directory, Email migration to Office 365, Microsoft Exchange, Outlook, OneNote, SPO and Office 365. ✅Throughout my career, I have worked with companies based in United States, Canada and Europe. ✅ Active Directory Domain Services ✅ Microsoft Exchange Server ✅ Microsoft/Office 365 ✅ DNS ✅ Mailbox migrations from on-premise, hosted and platforms to Office 365. ✅ IMAP and hosted email migrations from one platform to another. ✅ Commerce 365. ✅ Windows Server – All versions ✅ Hyper-V and VMWare virtualization ✅ SharePoint online and OneDrive for Business ✅ Office 365 desktop app configuration ODT. RDS and SSDM ✅ Network design and configurations including routing, switching and firewalls. ✅ Network security and data protection

I have over 5 years of hands-on experience in DevOps, Site Reliability, High-Availability & Automation. My goal is to learn as much as possible every day and build professional products for my clients. - Containers & Container Orchestration: Kubernetes, Docker - CI/CD: Jenkins, GitHub Actions, GitLab CI - Cloud: AWS, GCP, Azure, DigitalOcean, Hetzner, Linode, Heroku - Infrastructure Provisioning: Terraform, Pulumi - Configuration Management: Ansible - Webservers & Certificates: Nginx, Traefik, Apache, Varnish - Hypervisors: VMware ESXi, Proxmox - Web Development & Automation: Python, JavaScript - Databases: PostgreSQL, MySQL, SQL Server

🏆 Trusted by Microsoft & Volvo for mission-critical Cloud Security I secure enterprise Azure & Microsoft 365 environments with Zero Trust architecture, strong identity controls, and SIEM/XDR automation. Core Expertise: ✅ Identity & Access Management › Entra ID (Azure AD): SSO, Conditional Access, MFA, PIM ✅ Security Operations (XDR, SIEM, SOAR) › Defender XDR (Endpoint, Identity, Office 365, Cloud Apps, Cloud) › Microsoft Sentinel, Log Analytics, Azure Monitor, Workbooks, Logic Apps ✅ Cloud Architecture & Governance › Azure Architecture & Automation: ALZ design, Management Groups, Azure Policy, Bicep, Terraform › DevOps & Infrastructure as Code: Azure DevOps CI/CD pipelines › Governance & Compliance: Microsoft Purview (data governance/classification), RBAC, secure baselines, tagging strategy, budgets, automated reporting ✅ Modern Workplace & Device Management › Microsoft 365: Exchange, SharePoint, and Teams administration and security › Intune & Autopilot: device compliance, app protection, secure endpoint configuration ✅ Azure Cloud Platforms & Workloads › Azure Cloud Solutions: AVD and Cloud PC; Azure migration (VMware/Hyper‑V to Azure); Azure Site Recovery and Backup ✅ Network Security & Connectivity › Azure Firewall, NSGs, and VPN Gateway Who I help: 🎯 SMBs, MSPs, Startups building a secure cloud environment 🎯 Teams migrating to the cloud 🎯 Organizations needing compliance (ISO, SOC 2) 🧠 FREE Review: Send me your idea/project and I’ll record a FREE personalized VIDEO with high-impact recommendations. Let’s build a secure, well-governed cloud that just works. — Filip Y. ⭐️⭐️⭐️⭐️⭐️ Certifications: • SC-100: Microsoft Cybersecurity Architect • AZ-500: Azure Security Engineer • AZ-104: Azure Administrator • SC-300: Identity and Access Administrator • Microsoft Applied Skills: Administer Active Directory Domain Services • Microsoft Applied Skills: Defend against cyberthreats with Microsoft Defender XDR • Microsoft Applied Skills: Configure SIEM security operations using Microsoft Sentinel