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MD HOSSAIN MAHMUD SIAM

All systems operational · Available for new roles and freelance projects.

MD HOSSAIN MAHMUD SIAM

IT Specialist, Desktop Engineer, System AdministratorFrankfurt am Main, Germany

System status

Live

  • Job search (Operational)

    Open to onsite, hybrid & remote roles

  • Freelance capacity (Operational)

    Accepting new clients

  • Service area (Operational)

    Remote across Germany/EU · on-site Frankfurt area

  • Languages (Operational)

    English (C1) · German (B1) · Bengali (native)

Path 01 · For recruiters

For recruiters

5+ years in IT support and system administration. I manage devices with Intune and Jamf, provide 2nd-level Windows and macOS support in large environments, and administer Microsoft 365, Active Directory and Entra ID. I'm used to SLA-driven incident handling (ServiceNow, Jira), patch management, onboarding/offboarding, and writing technical documentation people actually use.

Looking for English-speaking IT roles in Germany: desktop engineering, 2nd-level support or system administration. Onsite, hybrid or remote.

years in IT support & administration
5+
roles in IT operations
3
Microsoft Azure certifications
2
languages: English, German, Bengali
3

Quick actions

LinkedIn profile (opens in a new tab)Contact me about a role
  • Open to onsite, hybrid & remote roles
  • Remote across Germany/EU · on-site Frankfurt area

Uptime history

Experience

Each bar is one month in the role.

  1. Desktop Support Engineer (L1/L2)

    A & O IT Group GmbH · Frankfurt

    –

    30 months · 2 yr 6 moCompleted
    • Enterprise support in an SLA-driven, ITIL environment using ServiceNow.
    • Microsoft 365 and Active Directory accounts and permissions.
    • macOS management via Jamf; mobile devices via Intune.
    • Citrix and Azure Virtual Desktop troubleshooting.
    • Onboarding and offboarding; maintained the knowledge base.
  2. System & Network Administrator

    ReliSource Technology Ltd

    –

    23 months · 1 yr 11 moCompleted
    • Led a 2-person internal IT team.
    • Windows Server, VMware ESXi/vCenter and Hyper-V.
    • Microsoft 365 administration and MFA rollout.
    • Patching and monitoring with SCCM and SolarWinds.
    • LAN/WAN, VPN and firewalls; Veeam backup and disaster recovery.
  3. IT Specialist

    Link3 Technology Ltd

    –

    18 months · 1 yr 6 moCompleted
    • 1st and 2nd-level support.
    • Microsoft 365 deployments and email migration.
    • Entra ID and role-based access control (RBAC).
    • Meeting room and A/V systems; asset inventory.
    • Wrote knowledge base articles.

Resolved changes

Projects

Short case studies: the challenge, what I did and the result.

CHG-001Resolved

Mailbox migration to Microsoft 365

Challenge
Mailboxes had to move to Microsoft 365 without interrupting people’s work or losing email.
What I did
Planned and carried out the migration of mailboxes to Microsoft 365.
Result
Migration completed with minimal downtime and no data loss.
  • Microsoft 365
  • Exchange Online
CHG-002Resolved

Microsoft Authenticator rollout to 450 users

Challenge
Introduce multi-factor authentication for 450 users without leaving anyone locked out.
What I did
Handled user communication, enrolment support and helpdesk during the rollout.
Result
Microsoft Authenticator rolled out to 450 users.
  • MFA
  • Entra ID
  • User communication
CHG-003Resolved

Backup & recovery for a client environment

Challenge
The client environment needed a reliable way to back up and recover its systems.
What I did
Set up Veeam backup and recovery for the environment.
Result
Backup and recovery in place for the client environment.
  • Veeam
  • Disaster recovery
CHG-004Resolved

Device & licence audit

Challenge
There was no clear overview of which devices and licences were in use.
What I did
Audited devices and licences and built an inventory.
Result
The inventory is used for procurement and planning.
  • Asset management
  • Licensing
CHG-005Resolved

Self-hosted GitLab server (lab project)

Challenge
Wanted hands-on practice with version control and self-hosted services.
What I did
Set up a local GitLab server on Ubuntu.
Result
A working GitLab instance used for version-control practice.
  • Linux
  • Ubuntu
  • GitLab

Monitoring dashboard

Skills

8 groups · 31 packages installed

Microsoft 365 & identity

5/5 up
  • Microsoft 365
  • Entra ID
  • Exchange Online
  • MSTeams
  • Sharepoint

Device management

3/3 up
  • Intune
  • Jamf
  • SCCM

Operating systems

4/4 up
  • Windows client
  • Windows Server
  • macOS
  • Linux (Ubuntu)

Directory & core services

5/5 up
  • Active Directory
  • DNS
  • DHCP
  • LDAP
  • Group Policy

Networking & security

5/5 up
  • TCP/IP
  • VLAN
  • Firewalls
  • VPN
  • Zscaler

Virtualisation & VDI

4/4 up
  • VMware
  • Hyper-V
  • Citrix
  • Azure Virtual Desktop

Backup & recovery

1/1 up
  • Veeam

ITSM & monitoring

4/4 up
  • ServiceNow
  • Jira
  • ITIL
  • SolarWinds

Configuration

Education & certifications

Education

  • MSc Applied Computer Science

    University of Applied Sciences, Germany

    Apr 2023 – present

  • BSc Computer Science & Engineering

    North Western University

    2015 – 2019

Certifications

  • Microsoft Certified: Azure Administrator Associate
  • Microsoft Certified: Azure Fundamentals

Training

  • MCSE Windows Server 2022
  • Jamf 100 Fundamentals
  • Microsoft 365 Copilot

Path 02 · For businesses

Service catalogue

Pick what’s causing trouble. Every service is explained in plain English and ends with documentation you keep.

SVC-01Available

Microsoft 365 setup & migration

The problem

Your email and files are spread over an old server, personal accounts or a provider you’ve outgrown.

The result

Everyone works in Microsoft 365, and your email and files are moved across safely with no lost data.

What’s included

  • Migration plan with a timeline that avoids disruption
  • Email, calendar and contacts moved to Microsoft 365
  • User accounts, licences and Teams set up
  • Short how-to guide for your team

Tools: Microsoft 365 · Exchange Online · Teams

Price on request

SVC-02Available

Device management

The problem

Laptops and phones are set up by hand, nobody knows if they’re secure, and a lost laptop means panic.

The result

Company laptops and phones are set up the same way, kept secure and updated, and can be locked or wiped remotely.

What’s included

  • Windows, Mac, iPhone and Android devices enrolled
  • Security settings: passcodes, encryption, updates
  • Standard apps installed automatically
  • Lost or stolen devices locked or wiped remotely

Tools: Intune (Windows, Android, iOS) · Jamf (Mac)

Price on request

SVC-03Available

Security basics

The problem

One stolen password could open up your whole company, and you’re not sure who can access what.

The result

Every account is protected with multi-factor sign-in, and the right people have the right access.

What’s included

  • Multi-factor authentication (MFA) rolled out, with help for every user
  • Review and clean-up of access permissions
  • Security baseline for small teams: passwords, admin rights, updates
  • Plain-English summary of what changed

Tools: Entra ID · Microsoft Authenticator · Microsoft 365

Price on request

SVC-04Available

Backup & recovery

The problem

If a server fails or ransomware hits, would your business be able to get its data back?

The result

Your important data is backed up automatically, a restore has been tested, and there’s a written plan for bad days.

What’s included

  • Review of what needs to be backed up
  • Automated backups set up and monitored
  • Test restore to prove it works
  • Written step-by-step recovery plan

Tools: Veeam

Price on request

SVC-05Available

Office network & Wi-Fi

The problem

Slow or dropping Wi-Fi, a network nobody understands, or staff who can’t connect from home.

The result

A stable, secure office network, and safe remote access for people working from home.

What’s included

  • Network set up from scratch, or troubleshooting an existing one
  • Separate networks for staff and guests
  • VPN for secure remote access
  • Firewall configuration and a network diagram

Tools: TCP/IP · VLANs · VPN · Firewalls

Price on request

SVC-06Available

Employee onboarding & offboarding

The problem

New hires wait days for a laptop and accounts, and people who leave keep access longer than they should.

The result

A repeatable process: new hires are ready on day one, and leavers lose access on time.

What’s included

  • Onboarding and offboarding checklist for your company
  • Accounts, licences and permissions set up or removed
  • Devices prepared, collected and reset
  • Process documented so anyone on your team can follow it

Tools: Microsoft 365 · Entra ID · Intune · Jamf

Price on request

SVC-07Available

IT audit & inventory

The problem

You don’t know exactly which devices and licences you have, or what you’re paying for but not using.

The result

A clear inventory of devices and licences, and a list of what you can cancel or should replace.

What’s included

  • Inventory of devices, users and software licences
  • Unused or duplicate licences identified
  • Recommendations for purchasing and planning
  • A spreadsheet you keep and can update yourself

Tools: Microsoft 365 admin · Intune · Jamf

Price on request

SVC-08Available

Ongoing remote IT support

The problem

You need someone reliable to call when things break, without hiring a full-time IT person.

The result

A monthly support plan: help in English when you need it, and regular maintenance in the background.

What’s included

  • Remote help for your team via phone, email or screen-share
  • New users, leavers and permission changes
  • Updates and patching checked regularly
  • Monthly check-in on anything that needs attention

Tools: Remote support · Microsoft 365 · Intune · Jamf

Price on request

Supported users

Who I help

IT support in English for teams that don’t have (or don’t need) a full-time IT department.

Small businesses

Offices and practices that need their email, laptops and network to just work, with someone to call when they don’t.

Startups

Growing teams that want things set up properly from the start: secure accounts, managed devices and smooth onboarding.

International teams in Germany

English-speaking teams who want IT support they can fully understand, without a language barrier.

Standard procedure

How it works

  1. Step 1: Free 20-minute call

    Tell me what’s going wrong or what you want to set up. No obligation, no jargon.

  2. Step 2: Assessment

    I look at your current setup and send you a clear plan and price before any work starts.

  3. Step 3: Fix or set-up

    I do the work remotely or on-site, timed to keep disruption to your team as low as possible.

  4. Included

    Step 4: Documentation & handover

    You get written documentation of what was done and how it works, so you’re never dependent on one person. Clear documentation and knowledge base articles have been part of my IT work for years.

Knowledge base

Frequently asked questions

Can’t find your answer? Open a ticket and ask.

Do you work remotely or on-site?

Both. Most work can be done remotely anywhere in Germany or the EU. For on-site work (network set-up, device roll-outs, office moves) I come to you in the Frankfurt area.

Do you work with Macs?

Yes. I manage Macs with Jamf and support macOS, Windows, iPhone and Android, so mixed offices are no problem.

What happens if something breaks after you’ve finished?

Every project ends with documentation and a handover, so you know how things are set up. If something comes up later, just get in touch. I can help with a one-off fix, or you can choose a monthly support plan.

We’re only a few people. Is that too small?

Not at all. Small teams are exactly who I set up this service for. Getting the basics right early is much cheaper than fixing them later.

Do you speak German?

I work in English (C1) and speak conversational German (B1). Your team gets support it can fully understand, and I can handle everyday German with suppliers or colleagues.

How much does it cost?

Each service shows a starting price. After the free call you get a clear quote for your situation before any work begins.

Free · 20 minutes · No obligation

Something in your IT not working the way it should?

Tell me about it on a short call. You’ll get a clear, plain-English view of what’s wrong and what it would take to fix it.

Service desk

Open a ticket

Tell me what you need. Every request gets a ticket number and a personal reply.

Typical reply: within 24 hours on working days

Category (required)

Priority

What’s the role or the problem? Any deadline?

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