George M.
Nairobi, Kenya
100%
Job Success
SMS, SMPP Kannel Expert, Web & Backend Applications/Systems Developer
$45.00/hr
Why we can talk business :-
- I have worked for about 12 years in VAS companies developing their inhouse SMS & USSD systems.
- I have designed, developed and done direct integrations to MNOs (mobile network providers) using SMPP, Parlay X and HTTP.
- I have developed complex Bulk SMS portals to manage all aspects of a PRSP including clients management, phonebook(contacts), bulk scheduling MT, receiving messages MO (on demand services), SMS subscriptions (premium services), Delivery Reports configuration and routing, SMS reselling, automated balance topup especially using payment gateways and mobile money.
- I have deployed Kannel to manage connectivity to SMSCs and subsequent routing and for smaller applications deploy multithreaded applications (Java) to handle the MT sending.
(You can check the demo site at http://188.166.146.151/v3/web/ username:admin password:123456)
Am committed to the projects I work on and need to see them through to completion. I understand that solving the user's problem is the end goal.
I stay up to date with the latest trends and are excited to learn new languages, tools, and best practices.
I thrive in teams and projects that span timezones and cultures.
I hold a Bsc in Software engineering having attained a 2-1 thus am very conversant with the best software practices and standards from the complete Software Development Life Cycle to the final hand over to clients.
I Have developed both back-end (extensive) and frontend systems using HTML, HTML5, JS, PhP (both procedural and OOP) ,Java and MVC frameworks (Yii, Yii2, CodeIgniter & Laravel) and database like Mysql, Sqlite, MSSQL, Redis running on servers like Apache for over 10 years.
Have developed USSD , SMS (I have advanced knowledge in Kannel messaging gateway, SDP) and Payments systems (including but not limited to Paypal, Stripe, mobile money- MPESA, Mobile Money) just to mention a few.
Am very conversant with developing APIs for Integrating with 3rd party applications. I have developed RESTFUL APIS using both JAVA and PhP. I have also developed/consumed protocols like XML-RPC, SOAP, HTTP and ISO.
I have handled complex integrations with systems like T24 (banking) and ClearVision (shares trading).
I embrace code versioning and collaboration tools and thus I have advanced experience in subversion (SVN) and GIT.
In most of my projects, I use AGILE methodology where I engage my clients after every major module, walk with clients through the module, make the necessary adjustments then proceed to the next.
I deploy monitoring systems once I develop a solution. To do this, I have prowess in Nagios monitoring system which I can easily configure to send SMS or Email notifications to alert configured users.
I develop solutions that are secure by default. 2-Factor Authentication comes as a standard in all web based solutions. Client can either decide to use SMS, email or Authenticator apps (eg Google Authenticator) to receive auth tokens. I also make sure the system has descriptive audit trail to enable the system owner keep track of what is happening behind the scenes.
I have developed systems both Windows and Linux platforms for several years and thus can administrate any system in those platforms.
I develop solutions that have a futuristic approach with an aim in incorporating elements of Artificial Intelligence, Machine Learning and Data Analytic.
When am not programming, I usually take out my violin and start making some music covers of popular songs though I have been a beginner for a while now. I also like jogging especially in the mornings and I have been beating my record (by a few seconds though) every new run.
Am a fun person and usually excited from learning new technology every day.
Work history
Work history
SMS Portal + MNC MCC Changes
Nov 8, 2023
-
Mar 20, 2025
Private earnings
You will get powerful bulk sms marketing tool on multiple gateways
Feb 28, 2025
-
Mar 18, 2025
No feedback given
Private earnings
App web J2EE & RabbitMQ
Jul 2, 2023
-
Nov 3, 2023
Private earnings
Building and Configuration of a Bulk SMS Tool
Jan 23, 2023
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Jun 26, 2023
"George is an exceptional developer. He developed an amazing bulk SMS tool for us and provides continuous assistance. This was my first software project and it all went successfully thanks…
Private earnings
Kannel SMS gateway implementation.
Oct 23, 2020
-
Apr 15, 2023
No feedback given
Private earnings
Web application to manage SMS outbound campaigns
Oct 22, 2022
-
Dec 16, 2022
"George has done an exceptional job! He is very diligent, detail oriented and understands what is needed. Haven't had such a pleasant experience with a freelancer for quite some time…
Private earnings
SMS Delivery System
Jul 20, 2022
-
Oct 27, 2022
"dependable and the best. Love to hire him again"
Freelancer's response
"Thanks Ram. Have much appreciated the chance. "
Private earnings
PlaySMS Modifications
Nov 24, 2021
-
Jul 13, 2022
Private earnings
You will get powerful bulk sms marketing tool on multiple gateways - Custom Changes Requested
Dec 2, 2021
-
May 23, 2022
"To start this review I would like say that the service and level of "know-how" when it comes to complex server solutions is amazing from George side, he have during…
Private earnings
SMPP API Project Assistance
Oct 12, 2021
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Oct 18, 2021
"George was very clear from the get-go. He understood my needs and was able to articulate it back to me, which is hard for many to do. He came up…
Private earnings
On-demand System Support
Jul 9, 2025
-
Present
Job in progress
Private earnings
Kannel configuration for an SMS proxy
May 30, 2025
-
Present
Job in progress
Private earnings
Proposed changes to the SMS Platform
May 25, 2025
-
Present
Job in progress
Private earnings
New VAS Chat Project
Mar 4, 2025
-
Present
Job in progress
Private earnings
Subject Matter Experts Needed for Technical Interviews in VAS and Premium SMS
Jan 28, 2025
-
Present
Job in progress
Private earnings
SMSC Gateway Deployment and Configuration
Jan 21, 2025
-
Present
Job in progress
Private earnings
Preliminary discussions for Kannel integration
Jan 20, 2025
-
Present
Job in progress
Private earnings
SMS Platform Support
Dec 12, 2024
-
Present
Job in progress
Private earnings
SMS system to send High Speed SMS Marketing Campaigns over Wireless Gateways SMPP
Sep 10, 2024
-
Present
Job in progress
Private earnings
SMS Platform + USSD Navigator deployment
Jun 20, 2024
-
Present
Job in progress
Private earnings
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Skills
Skills
- Java
- Web Application
- Database Design
- Scripting
- Kannel
- Messaging System
- SMS
- SMPP
- Database Management
- PHP
- MySQL Programming
- Payment Gateway Integration
- Application Server
Project catalog
Get started working with George quickly with these predefined projects.
Get started working with George quickly with these predefined projects.
You will get powerful bulk sms marketing tool on multiple gateways
From $2,500
7 days delivery
You will get expert integration for SMPP using Kannel and PlaySMS web interface
From $600
7 days delivery