Charles Maggs Email & Phone Number

Seal Beach, Ca

Costa Mesa, Ca

* Direct and accompany choir for traditional service* Play hymn/song accompaniment, preludes and postludes for traditional service* Provide oversight of 4 section leads in traditional service* Coach and assist musicians for contemporary service* Select service music for traditional service* Contract auxilliary musicians for special services

Santa Ana, Ca

* Teach handbell classes and direct handbell ensembles* Write handbell parts to complement and augment selected chorus pieces as well as original arrangements for the handbell choir* Substitute for the chorus as choir director, accompanist, or music theory instructor as needed

Irvine, Ca

Castles manufactures PCI certified payment terminals. They provide terminals, SDKs, and support to third party developers in creating customized payment solutions.Software development* Created and updated sample applications in C++ and C that provided examples to third party developers on how to perform key system operations in the terminal.* Compiled customer application packages to identify issues in the source code base (e.g. missing includes and conditional statements) and build configuration (e.g. missing libraries or compiler options).* Reviewed source code for Android applications to locate issues and bugs.Software / firmware management* Provided key design elements and recommended tools for creating the SDK for Linux systems.* Tested deliverables from R&D team such as sample code, software tools, and firmware updates.SDK support* Reported bugs to R&D team, tracked progress, and tested deliverables within 1 business day.* Provided timely customer support and training for developers, usually responding within 4 hours.* Managed and tracked the status of unresolved issues for high-priority customers, following up with R&D team on issues with no activity in over 48 hours.Documentation* Created documentation for key processes such as SDK installation, firmware updates, and key injection.* Reviewed documentation from R&D team for factual and readable content as well as proper grammar.* Established FAQ pages and how-to documents to provide information not covered in terminal manuals.

Santa Ana, Ca

ExaDigm manufactures PCI certified payment terminals and PA-DSS certified payment applications for their terminals. They provide terminals with payment apps to customers needing prebuilt solutions, and terminals with SDK to developers building customized solutions.Terminal development* Worked on communication service written in C that supports Ethernet, WiFi, CDMA, GPRS, and dialup.* Worked with third party libraries and samples written in C++ to modify for evaluation and use in terminals.* Provided sample applications to customers to demonstrate key operations.* Built root filesystems, boot scripts, and diagnostic tools for ARM9 embedded Linux POS terminals.Semi-integration* Architected JSON-based messaging for all ExaDigm terminals to provide semi-integration support.* Selected, built and tested third party library for building and parsing JSON messages.* Created sample code in C and Python to help developers get started with semi-integration.PA-DSS compliance* Managed several PA-DSS certification and recertification projects to successful and timely completion.* Created documentation describing software development, code reviews, and vulnerability monitoring.* Proactively monitored industry news for potential security flaws that could impact terminal certifications.SDK support* Provided timely customer support for developers using the ExaDigm SDK.* Created and acquired documentation and software packages for the developer portal.* Restructured SDK and redesigned installer to be simpler and include support for both RHEL and Ubuntu.Administration: Presented PowerPoint sessions for sales and customers, ran weekly meetings to manage certification projects, interviewed candidates for engineering positions, and managed junior engineers.

Long Beach, Ca

* Directed chancel choir and worship band.* Provided accompaniment for hymns and songs on the organ, keyboard and guitar.* Selected liturgically and scripturally relevant service music for the worship service.* Procured or wrote arrangements for the singers and instrumentalists.* Provided improvised music on organ or piano whenever required.* Selected music for, rehearse and lead occasional auxiliary musicians.* Provided or arranged for music for additional services and functions.* Met with staff to plan and review services.

Huntington Beach, Ca

* Led congregation in worship.* Selected liturgically and scripturally relevant service music for the contemporary worship service.* Procured or wrote arrangements for the contemporary worship group singers and instrumentalists.* Provided improvised music on piano whenever required.* Collaborated with traditional music staff in providing music for combined services.

* Accompanied choir for regular rehearsals* Transcribed vocal charts for future reference that were created and taught in rehearsal* Provided pitch references to one or more choir sections during rehearsal

San Dimas, Ca

Returned to Magellan for this engagement as a contract developer* Created GPRS application in C++ to exchange XML data via UDP in simulator and via wireless modem driver on WinCE platform; HD radio component received binary data via serial port.* Led onsite and offshore developers in GPRS and HD radio software development (in C++) for integration of GPRS and HD radio communications into Windows CE based vehicle navigation units.* Integrated GPRS / HD radio application (written in C++) with user interface to provide real time data services.* Documented communications protocol, decoding strategy, and program flow for HD and RDS radio projects.* Interfaced with vendors to write requirements, track project status, and manage code drops.

Anaheim, Ca

* Constructed multithreaded Windows encoder/decoder (CODEC) service in C++ to convert data from multiple sources into one homogeneous form, communicating with other services via Microsoft Message Queues.* Developed multithreaded Windows gateway service in C++ to interface between cellular provider's SMSC and system CODEC using SMPP protocol via TCP/IP sockets to exchange SMS data.* Built Windows gateway in C++ that linked asset tracking ground station and system CODEC.* Implemented services in C++ to transmit user notifications to multiple destinations via SMTP or SMS.* Created multithreaded Linux UDP gateway in C to interface between transponders and system CODEC.* Provided on-site and remote support to overseas customers in configuring and installing system applications.

* Managed software engineering teams for three consecutive and two concurrent embedded GPS products.* Decreased development time on two concurrent projects by reusing code on shared product functionality, decreasing the software development timeline by 50 percent.* Interfaced with internal marketing/design groups and outside firms to implement embedded applications.* Provided services as departmental IT specialist and companywide network analyst.

Bachelor Of Music, Instrumental Music

Associate Of Arts, Microprocessors

+ Graduated with 4.0 GPA.

Teaching Credential, Education

Education record