Lucas C. Lima
Well-versed knowledge in IT and Computer Science
Rockville, MD 20853 | 301-275-2125 | lucas.c.lima70@gmail.com
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Professional Summary
Resourceful IT professional with 4+ years of experience supporting small to mid-sized business environments through MSPs, as well as in-house IT. Strong background in system administration, cloud platforms, and endpoint security. Proven track record in Microsoft 365 tenant management, backup solutions, and secure server/network deployments. Hands-on experience with threat investigation, identity access management via Entra ID, and compliance support using tools like Duo MFA and BitLocker. Passionate about cybersecurity, with practical exposure to incident response, access control, and security best practices across hybrid environments.
Education
Towson University, Towson MD
2016 - 2020
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B.S. in Computer Science, Concentration in Cybersecurity
Comptia Security+, Network+, A+, CIOS, CSIS, Microsoft Azure Fundamentals
Experience
Conscious Networks, Remote — Network Engineer
Sept 2024 - Present
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Utilized Atera RMM for remote support, automated patch management, and scripting tasks across multiple client environments.
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Performed Microsoft 365 tenant-to-tenant migrations, including domain transfers and user mailbox migrations with minimal downtime.
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Configured and monitored MSP360 backups for laptops and workstations, managing backup types, schedules, and retention settings.
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Onboarded and offboarded users in Microsoft 365 (Exchange Online) and Active Directory, ensuring compliance with access control policies.
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Utilized Microsoft Entra ID (Azure AD) to investigate indicators of compromise (IOCs), support incident response, and monitor for suspicious activity.
Assisted in server deployments by applying firmware updates via iLO, installing hypervisors (e.g., Hyper-V/VMware), and physically setting up equipment at client sites.
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Installed and racked network hardware (e.g., firewalls, switches), and verified network connectivity (LAN/WAN) and device availability.
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Technologies & Tools: Microsoft Entra ID, Defender for Office 365, Duo MFA, Atera RMM, Sophos Central, MSP360, Exchange Online, Active Directory, PowerShell, Windows Server, HPE iLO, BitLocker, DNS, TCP/IP.
Acuity Technology Group, Germantown MD — Network Engineer
March 2022 - Sept 2024
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Monitored and maintained over 70 client networks in the DMV area.
- Installed network infrastructure equipment.
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Designed and implemented a robust Remote Desktop Services (RDS) infrastructure, deploying Terminal Servers (RDSH) for remote desktop access. Configured Remote Desktop (RD) Gateway with a custom CNAME SSL URL to facilitate secure, encrypted external access. Integrated DUO multi-factor authentication (MFA) to enhance security for remote connections. Enabled seamless Active Directory (AD) integration, allowing users to log in via the RD Gateway URL with AD credentials and authenticate using DUO. Streamlined remote access setup, resulting in improved user experience and enhanced security for remote connections.
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Migrated Domain and DNS to AWS Route 53.
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Migrated M365 Exchange mailboxes and domain to new M365 tenant.
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On-boarded an entire Microsoft 365 tenant. Linked tenant to a CSP for
license ordering and provisioning. Added tenant global admin,
Registrar, and DNS credentials to password manager for secure and easy
storage. Azure-Ad joined client machines, and installed RMM agent and
Antivirus software. Set up conditional access policy and enforced MFA
for user accounts. Assisted users with setting up number matching MFA
in the authenticator app.
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Resolved software, hardware, and network issues via the Connectwise
Manage ticketing system.
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Set up and installed Sonicwall firewall. Configured Sonicwall network
and security settings.
- Assisted users with connecting to SSL VPN.
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Pushed out and deployed settings, printers, etc via group policy.
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On-boarded Azure AD connect users using Active Directory utilities,
Powershell, and EAC.
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Set up SMTP and network settings on copiers to enable scan to email
and network folders.
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Verified legitimacy of emails by investigating the email, analyzing
backend email headers, and using different tools and skills to help
clients determine whether suspicious emails are spam or phishing.
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Responded to email compromise incidents by recovering email accounts,
ensuring threat actors were dealt with, hardening systems, and
educating end users to help prevent future occurrences.
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Skills used: Active Directory, Group Policy Management, DNS, DNS
Records, DHCP, VPN, Site-to-site VPN, SSL VPN, PowerShell,
Hyper-V,RMM, SentinelOne, ICMP, TCP/UDP, SMB, IMAP, POP, SMTP, DKIM,
SPF, DMARC, Sonicwall, Synology NAS, WizTree, WizFile, Sysinternal
Tools, Azure AD, Conditional Access, Azure AD Connect, Windows Server
2012R2, 2016, 2019, 2022.
Criswell Automotive, Gaithersburg MD — System Administrator
Feb 2021 - Mar 2022
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Solved internal employee software and hardware issues via Freshdesk
ticketing system.
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Managed the company's whole network infrastructure spanning multiple
locations using Cisco Meraki.
- Troubleshooted both wireless and Ethernet connectivity issues.
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Patched up network cables in the data room. Connected cables to
switches and patch panel.
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Assisted with data room network swap, swapping out old switches with
new ones and redoing network cable patching.
- Reimaged computers.
- Set up computers, peripherals, and printers.
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Monitored and maintained print servers, file shares, and domain
controllers.
Home Labs & Projects
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Created and deployed this cloud hosted resume using Visual Studio Code, Azure Cosmos DB, Azure Functions, Azure Front Door & CDN, Programming, API, GitHub (CI/CD).
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Installed Synology Router at home. Configured SSL VPN, DDNS, imported certificate.
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Spinned up virtual machines in both type 1 and type 2 hypervisors such
as Hyper-V and VirtualBox.
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Configured VM custom resources. Spinned up Windows Server 2022, 2016,
Windows 10 workstations, and Linux distros (Ubuntu, CentOS).
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Promoted Windows Server to Active Directory. Created domain and
forest. Added workstations to the domain.
- Used Powershell to automate tasks.
More Skills
From College
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Linux, Windows, C++, Java, VMware, VirtualBox, log servers, IDS,
firewalls, Windows domain, WinRM, Remote Desktop, Sysinternals tools,
SSH services, file servers, log servers, DNS servers, apache web
servers, phpMyAdmin, Samba, MySQL databases, Metasploit,
vulnerabilities, exploits, Python, cryptography, C, assembly language,
buffer overflow, stack overflow, cross site scripting, cross site
request forgery, SQL injection attacks, Reverse engineering, malware,
static and dynamic analysis techniques, IDA Pro, OllyDbg, HTML, CSS,
JavaScript, SQL.
From certifications
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Cloud concepts, Azure architecture and services, Azure management and
governance, cloud computing, hardware configuration, hardware
troubleshooting, help desk, IT support, mac support, mobile device
support, OS, software troubleshooting, system backup and recovery, sys
admin, tech support, virtualization. Cloud networking, DHCP, DNS,
network management, network security, network troubleshooting, routing
and switching, software defined networking, system/network
configuration, VPN, vulnerability management, WAN, wireless
technologies.
Foreign Languages
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