Ruel Sison

Software Developer with over 20 years of experience in full stack, embedded, and mobile application development across global and local projects. Highly skilled in C/C++ and a wide range of technologies including microservices and messaging protocols. Demonstrated success in building scalable systems for cross-platform environments, with strong expertise in Linux, real-time communication, and backend services.

Proven ability to adapt to emerging tech stacks, solve complex technical challenges, and deliver high performance software solutions. Adept at working in collaborative, fast-paced engineering teams with a commitment to code quality and continuous improvement.

SENIOR C++ DEVELOPER

NinjaOne LLC., Contractual - May. 2022 - April 2025 - Austin, Texas, USA

C++, Go, C#, CMake, VCPKG, CIrcleCI, TeamCity, git, Boost, QT5, Shell Scripting, REST, Jira, Vagrant,, AWS, Terraform, PostgreSQL

• Responsible for implementing new features, bug fixes, testing, quality assurances and enhancements of Agent software for Windows, Linux and MacOS.
• Responsible for the development of testing automation software.

FLUTTER DEVELOPER 

Combine AI Limited, Contractual - Dec. 2020 - Jun 2021 - London, GB

Flutter Framework 

• Designed, developed and tested the client and trader mobile applications using Flutter framework.

PROGRAMMING SPECIALIST II

Bahay Financial Services, Full-Time - March. 2019 - Nov. 2020 - BGC Taguig, PH

JaveEE (Spring Framework), JSP, Microsoft SQL, T-SQL

• Implemented a workflow based system for handling and management of Foreclosure and Writ Of Possession.
• Provide internal technical support and feature enhancements to the Asset Management System.
• Provide critical enhancements and established best practices for securing and maintaining a legacy Document Management System.

MOBILE APPLICATION DEVELOPER

City Soft Ltd., Contractual - Nov. 2017 - Oct. 2018 - London, UK

C, C++, 

• Implemented new features, bug fixes and efficiency improvements to existing form data capture mobile application.
• Designed, developed and tested a cross platform form data capture mobile application.

IT CONSULTANT

Yondu INC., Contractual - Jul. 2017 - Nov. 2017 - BGC Taguig, PH

C, C++, Java EE (String Framework), Perl RabbitMQ,, REST, AWS, MongoDB

• Responsible for the investigations, recommendations, design, implementation, and testing to enhance the performance of an SMS aggregator Platform.
• Responsible for the documentation, deployment, and conduct training for the users.

SENIOR EMBEDDED SOFTWARE ENGINEER

Lucidtron Philippines, Contractual - Oct. 2016 - Mar. 2017- Sta. Rosa, Laguna, PH

C, C++, ESP32, PIC32MX470F512H, Sigfox, GPS, RS232, RS485, Ethernet, I2C, UART, SPI, Accelerometer, Gyroscope, Magnetometer, Altimeter / Barometric Pressure, Temperature, Humidity, Battery Level

• Design, Implementation,Testing and Documentation of POC products such as HAL, OSAL and Power management modules.
• Ported implementation of Embedded Open Sensor Platform (OSP) with support for accelerometer and pressure sensors.
• Design and implementation Time Synchronization, Battery Monitoring and User feedback and notification modules.
• Development of demonstration codes and documentation.
• Source code management and continuous integration .

MOBILE APPLICATION DEVELOPER 

CoreSwitch Technologies, Self-Employed - Jan. 2016 - Oct. 2016

C, C++, 

• Provide bug fixes and feature enhancements of a mobile application for a bicycle marketplace (TogoParts).
• Provide bug fixes and feature enhancements to ConiVox application. 

SR. EMBEDDED SOFTWARE ENGINEER

Simple Wearables, Contractual - Sept. 2015 - Dec. 2015 - Ortigas, Pasig City, PH

C, C++, 

• Design, and documentation of a cross-platform framework for SimpleWare Products to support PIC and NRF51 microcontrollers.
• Assisted in the development of algorithms in Fall Detection.
• Design and documentation of a secure end-to-end device provisioning.

MOBILE APPLICATION DEVELOPER

Destiny Wireless PLC, Contractual - FEB. 2015 - Sept. 2015 - London, UK

C, C++, 

• Software Architecture Design & Implementation of Destiny Router application to

Blackberry 10.

SR. SOFTWARE DEVELOPER

Tiaxa Philippines Inc., Full-Time - May. 2013 – FEB. 2015 - Ortigas, Pasig City, PH

C, C++, Perl, JaveEE, PHP, MySQL, Apache, AWS

• Served as a technical specialist for daily operation of existing services.
• Conduct troubleshooting, bug fixes and enhancements of existing services.
• Provide technical training for technical support personnel.
• Provide technical training for new developers.
• Provide software architecture design, and implementation of BA service integration to Online Charging System (OCS).
• Software architecture design, and implementation for the enhancement and bug fixed SMPP communication protocol.

MOBILE APPLICATION DEVELOPER

CoreSwitch Technologies, Self-Employed - AUG. 2011 - MAR. 2013

C, C++, 

• Software architecture design, implementation and testing of Over-The-Air Content Management System web site.
• Software architecture design, implementation and testing of client applications for iPad and Mac OS applications.
• Design and develop a cloud based data capture solution for iOS and Android (Inkwrx).
• Hybrid Form Renderer application platform.

ADVANCED WORLD SYSTEMS, INC

Senior Embedded Software Engineer, Contractual - Dec. 2010 - Aug. 2011 - Makati City, PH

C++, Visual Studio

• Handled Panel GUI development, testing and documentation for Multi-Functional Printers.

LEAD SOFTWARE DEVELOPMENT

Destiny Wireless PLC, Contractual - Oct., 2008 – Nov. 18, 2010 - London, UK

C, C++, 

• Researched and implemented techniques to acquire accurate GPS location with less power consumption
• Implemented new features, bug fixes and efficiency improvements to existing Destiny Router Mobile applications.
• Participated in the redesign and development of the Job Management and Vehicle Tracking System to effectively handle large volumes of transactions.
• Ported existing USB device driver and desktop application to support Windows platforms.

SOLUTION ARCHITECT

CreoEdge Corporation (Formerly, Innofone Philippines Inc.) - Full-Time Jul. 2006 – Oct. 2008 - Ortigas, Pasig City, PH

C, C++, C#, Perl, PHP, JavaEE, MySQL

• Software architecture design, implementation and integration of mobile ticketing, ticket redemption and Kiosk systems.
• Software architecture design and implementation of e-commerce was & web site.
• Software architecture design and implementation of Remittance System.
• Managed more than 10 developers with different programming language expertise to design and develop high scalable web applications.
• Served as a technical lead on creating new products and services that utilizes the strength of IPV6 protocol

SR. TECHNICAL SPECIALIST

Wolfpac Mobile Inc., Full-Time - OCT. 2004 - Jul. 2006 - Makati City, PH

C, C++, Perl, PHP, JavaEE, MySQL, Postgres,

Worked as a Platform Engineer, I was responsible for daily activities in

• Design, implementation, testing and maintenance of a Multi-Media Messaging System
• Enhancements, bug fixes and maintenance of the communication protocols.
• Enhancements of the broadcast messaging system and add supports for EMS, WAP Push/ Pull, and DRM.
• Design, Implementation and Maintenance of HTTP based Messaging Gateway
• Served as a technical lead on creating local and international products and services.
• Recognized as Rookie of the Year (2004)
• Worked as a Senior Technical Specialist, I was responsible for daily activities in
• Content Delivery System with DRM Design and Implementation
• Evaluation and preparation of technical requirements for new business opportunities.
• Work in a team to redesign the service and messaging platforms.
• Co-led in the system migration procedures.
• Worked alone to modify a C application to use Oracle database

EMBEDDED SOFTWARE ENGINEER

Autonix Enterprise, Full-Time - Jan. 2004 – OcT. 2004 - Binondo, Manila, PH

C, C++,

• Developed and tested firmware for Remote LCD Display Module that communicates using RS486.
• Designed, developed and tested a storage module using EEPROM and Flash Memories.
• Code optimization of the Power Meter Reading firmware using a DSP based MCU.
• Designed, developed and tested a desktop application for the data retrieval of a Power
• Meter Reading system over PSTN.

EMBEDDED SOFTWARE ENGINEER

MITECH Borromeo Technology Holding Inc., Full-Time - Nov. 2001 - JAN. 2004 - Makati City, PH

C, C++, Visual Basic,

• Designed, developed and tested a firmwares for timekeeping and meal ticketing systems.
• Implemented new features, bug fixes and efficiency improvements to existing firmwares.
• Designed, implemented and tested a Time and Attendance Retrieval software.
• Responsible for the Installation and implementation of various systems and conducting training and seminars for the users.
• Investigated and troubleshoot hardware and software related defects.

PROGRAMMER

Diatex Garments Corporation, Full-Time - Jun. 2001 - Nov. 2001 - San Pedro, Laguna, PH

Visual Basic, Visual C++, Microsoft SQL, Client-Server, SDLC

• Designed, developed and tested a client/server desktop application that assists the packaging of garments.

Master Degree in Computer Science De La Salle University, Manila 2008 – (18 Units)

Bachelor Degree in Computer Science University of Perpetual Help System, 1995 – 1999