David Wathen Email & Phone Number

Responsible for developing the initial and new features on the Assurelink Control for AO Smith water heaters. Ported the real-time C firmware over to use the Ayla Wi-Fi Module/Cloud Services and run on a 32 bit ARM Freescale MCU. Implemented an Over-The-Air firmware update module which uses RSA based digital signatures to secure the upgrade process. Implemented various modules on the KneeMetrix sensor for JointMetrix Medical. The sensor uses a Atmel XMEGA micro controller, a bend sensor, accelerometer and gyro to record knee movement.Implemented, verified and released various changes for the Water System Controller (WSC) project for Adams Rite Aerospace. The WSC transmits system status on the ARNIC 429 communication bus to avionics throughout the aircraft.Developed various firmware modules on the Public Address and Cabin Interphone System (PACIC) for AvtechTyee. The real-time embedded software is designed for use in commercial aircraft and were developed to meet DO 178C DAL D objectives.Responsible for rebranding and implemented various enhancements to the Pyramis ECG Management system for Mortara. Worked on the DataPro software tool which provides the ability to send and receive commands to a TOC analyzer using the Link PC communication protocol. The software was written in WPF/C# and uses a Microsoft SQL database.Responsible for rebranding and implemented various enhancements to the QStress Cardiac Stress system for Mortara. Implemented a custom adaptor and the required changes to the Aerospect SPS software to control encoders and gaging electronics for ultra high precision measurements of Turbine Engine parts. Worked on the Cytomedix-Angel Project, a blood separation device that separates whole blood into red cells, platelet poor plasma and platelet rich plasma. Managed developers and implemented enhancements to the Stryker Sustainability Solutions to enhance the existing epCMP software built with C++, MFC, .NET and Microsoft SQL Server.

Provide software consulting services to various companies including Syncroness, Optica Technologies, Total Cable Solutions, Data Structures, Marvell, Wathen Realty Group, Costa Rica Dream Homes and Harpos Sports Grill.

Designed and Developed a Lock Management System using C++, MFC, Microsoft SQL andCrystal Reports for LockSolid Systems. The hierarchical design allows for easy control of individual and group timed access records, auditing and management of all locks within a facility code.Designed and developed the real-time PIC Assembly/C code for the System Key, User Keyand Intelligent Lock Cylinder. One-wire communication with AES encryption was used to secure the communication. Performed precision manufacturing and assembly of key and lock parts.Designed and developed an intelligent lockbox which uses key codes, USB keys and RF cardsfor timed lock access, auditing and management. Developed a secure code generation algorithm which provides timed access codes that do not require any lock programming.Developed all marketing materials, graphics and webstie for MedGuard Safes.

Houston, Texas, Us

Architected and developed software, provided consulting services and worked as a project manager. Technologies ranged from user interface development, distributed computing, messaging, telecomunications and network and system management.