New York, New York, United States
Responsible for design and development of new features for the MongoDB query engine (C++).
- Feature development and enhancements to SAP HANA JSON Document Store in C++. DocStore is SAP’s competitive document database offering delivered as part of SAP HANA. - Feature development and maintenance for MDS (Multi-Dimensional Services) in C++. MDS is an OLAP engine that is a component of SAP HANA (in-memory database) and used by several products offered by SAP (SAP Analytics Cloud, Analysis Office, etc.)
- Developed improvements to camera firmware using C and C++. - Modified NAND flash driver to interface with new flash memory (JFFS2 and UBIFS). - Improved bad block detection application in production cameras. - Delivered support for wireless network adapters on embedded devices by porting Linux device drivers to target environments. - Collaborated on auto white balance algorithm enhancements for WDR CMOS image sensors. - Delivered features for camera management WebUI in JavaScript.
- Developed a Proof-of-Concept mobile handwriting application, integrating Bluetooth digital pen hardware (in C and C++). - Delivered text recognition and text search in handwritten documents by integrating OCR engine service into application. - Optimized performance by refactoring application to use real-time multithreaded design, handling both application logic and hardware interrupts. - Migrated application from using bitmap to vector based graphics.
- Collaborated on the research and development of bimetallic grayscale photomasks for MEMS and MOEMS fabrication under the supervision of Dr. Glenn Chapman. - Responsible for research and development of real-time laser power modulation system used for mask writing on Virtex-II Pro FPGA (VHDL and C). - Increased the system sampling frequency by refactoring the system to leverage dedicated CPUs for each sensor used in ADC computations. Publications: Glenn H. Chapman, Reza Qarehbaghi, Santiago Roche, "Calibrating bimetallic grayscale photomasks to photoresist response for precise micro-optics fabrication", Proceedings of SPIE Vol. 8973, 897307 (2014)