• Web development
  • System engineering
  • Database engineering
  • Data-driven online marketing

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Last update: 2019.01.07.

know who i'm

I started to learn with IT actively in 2008. I enjoy to build systems and I like the way how different pieces can create a large, complex integrated system together. This is the reason why I like to use a combination of Linux – MySQL – PHP.

In this scheme every program has its own role, to make a valuable and useful product. I believe, the most important is the practicality of the systems, although I agree that the design and layout should not be ignored.

My ultimate goal is to provide effective and user-friendly systems that support projects to be more successful and effective.

  • 8

    years experience
  • 24

  • 13

    finished courses
personal info
  • Name : Gabor Sagi
  • Age : 30 Years Old
  • Phone : +36-70-271-8805
  • Email : gabor[dot]sagi[at]bitwalker[dot]hu
  • Residency : Hungary
How my projects are delivered?

On time
On budget
As specified
With passion

Latest projects
Mailbox sniffer, serverless e-mail sender:
  • Checks e-mail address for syntactical errors
  • Check domain names existence
  • Checks mailbox availability with Telnet without sending an e-mail
  • Lowers bounce rate before sending
  • Lowers business risk for unproven database
  • Sends HTML email to Mailgun API to validated mailboxes
  • Personalized and dynamically generated templates
  • Cost-effective, with zero cost for 10 000/month
  • Pay as you go, not monthly plans

Sending one time on demand e-mail campaigns can be an infuriating series of issues without having a dedicated SMTP server.

You are either forced into a monthly plan or pay an unjustifiable fee to send a couple of thousand e-mails once with third party service providers like MailChimp.

The other risk can be an unproven database generating large bounce rate and your service provider shutting down your campaign. For this reason, I developed a mailbox sniffer and email sender using Maingun API to send emails with lower risk (bounce) in a cost-effective way.

  • Web development (frontend, backend)
  • Database engineering (MySQL)
  • Automated database migration
  • UX
  • Graphics design
  • Testing
More projects
Web development, design, UX
Spring Festival - The Year of the Dog
Online marketing campaign,
social media management
Web development, design, UX (Work in progress)
China Smart Expo 2017-2018.
Web development, design, UX, system engineering, continuous support
Web development, design, UX, continuous support
Passion project, conversion measurement system
Personal teacher
Teaching MySQL, Google Analytics, Google Search console, Photoshop
The Forge
Passion project, Content management System
DIALux Workshop
Web development, UX, event registration page
ChinaCham Hungary
Occasional IT support on spot, event support
Web development, design, UX, continuous support
Miss Rebel
Online marketing,
social media management, consultant, team leader
Ric 2002 Ltd.
Occasional IT support on spot for bookkeeper office
Iconink Live Show
Web development, UX, event registration page
Web development (backend only)
China Smart Expo 2014-2017.
Web development, design, UX, system engineering, continuous support
Focus Trend System Ltd.
Online marketing consultant
Web development, design, UX, copywriter
Piac & Profit
Event support
Passion project, Customer Relationship Management system for events
Icon fishing competition
Web development, UX, event registration page
Web development
On-site registration system for Generali sports day, on-site support
tipoxbetontechnika.hu (2012-2015)
Web development
chinamart.hu (2010-2012)
Web development

Clients and partners

From small to large. Supporting to reach a common goal. To deliver the best of the industry.

And many more...

The Forge

Content management system for one of a kind web pages, built on a project to project basis


Conversion measurement on the next level. 20% better accuracy than Google Analytics. No ADblocking. Data on the client's side.


Customer Relationship Management system for small and mid-size events.


Meta data collector. So you know who, what, when and with what has done.

  • 13

    successful projects powered one by one or as one complete solution suite

Education & experience

With investing into knowledge, I invest in the future

Networking fundamentals
  • Linux scripting

TCP/IP, network protocols, routing, networking packets, Wireshark

Mainly theoretical education about communication networks.
Basics of Wireshark

Mailing services
  • Linux scripting

Mailing services with Postfix, Dovecot by MySQL backend

Mailing services with Postfix, Dovecot by MySQL backend. Webmail with Round Cube. Basics of spam and virus filtering with Spam Assasin and ClamAV on Debian 7

Bash programming
  • Linux scripting

Storage academy
  • Hewlett Packard Hungary

DAS, SAN, NAS, backup methods, multiple sites solutions, raid levels, disk types

Disk types, raid levels, storage solutions and the math behind all of it.

  • Linux Scripting

Virtualization with Virtualbox and KVM

Virtualization with Virtualbox and KVM through command line tools for creating a virtualized environment for testing and for production.

Freelancer IT professional
  • Web developer
  • System engineer
  • Online marketing

Under the Bitwalker umbrella. Pursue my dreams.

Accenture / SAP Hybris
  • Full-time employee

  • • Second line technical support in Cloud environment with the focus on incidents and escalations, root access to individual server nodes

  • • System administration of more than 10 000 CentOS and Debian Linux server nodes in multiple data centers

  • • System administration in a primary Apache2, Tomcat, JAVA IT stack

  • • Handling customer and Cloud incidents on server nodes

  • • Deployment of JAVA based E-commerce application

  • • Working together with teams across the globe from Malina to Monterey in a truly Multinational work environment.

  • • Communication in English trough Skype, Slack, Outlook on a daily basis with Customer facing situations

  • • Participation in weekend work, and on-call duty

  • • Change documentation, ticketing system on ITIL basis. Multitasking.

CECZ Trade Center Ltd.
  • Full-time employee

  • • Web development (both front and back end)

  • • Daily system administration in a mixed environment, LAMP administration

  • • Support of the management daily work, support of departments (marketing, sales, office administration etc)

  • • Network administration

  • • Database planning and administration

  • • Web-based registration interface for events, the compilation of statistics

  • • Data mining

  • • Graphics design

  • • Support for external contractors (marketing agencies, call centers, network providers, mobile app developers etc.)

  • • Execution of EDM campaigns from coding to sending (100 - 200 000)

  • • Participating in the technical execution of the corporate and external events

  • • Complete IT background for China Smart Expo (CMS, CRM, Check-in, business intelligence)


Ping me

~ Coffee addict ~

Check out my blog archives.