Software Developer in Chisinau, Moldova

ANPR software for real-time processing. I contributed to its development as part of a team of two, and I was responsible for:
• Getting the dataset.
• Training the model.
• Interconnecting the model to real-time cameras.

Block My Ads blocks ads and trackers automatically.

As a senior management consultant, I:
- Compiled the software, fixed bugs (using Visual Studio 2019), and tested it
- Participated in hiring new personnel by analyzing resumes and preparing a short-list of candidates; reviewed the strong and the weak sides of each candidate.
- Created a product analytics proof-of-concept tool (using County SDK, Sentry SDK, Docker, MongoDB, and Cube.js)

A framework to connect medical devices with a laboratory information system developed while I was working at NetInfo. Medical devices transmit patients' results to the system and receive worklists from the system. I designed and implemented a framework that allows the quick design of the driver for the specific medical device, and I designed and implemented over 60 adapters for different types of medical devices. Data exchange is done either using RS232 or TCP/IP or by using file import/export (depending on the specification of the medical analyzer). The framework uses HL7 standard for data exchange.

A database API (DE DB API, or DEDBAPI) to extract data from a database. I designed and implemented the solution using C# (.NET 5). The API runs inside IIS, to connect to the SQL Server database using Dapper library.

Apache reverse proxy was configured to allow access to the DEDBAPI from the external world.

Several SQL Server procedures were written to extract the corresponding data.
Gunzip and XML parsing are used to extract and process data from the database.

A service to print documents from the medical information systems using XAML templates developed while I was working at NetInfo. The document template uses Blend for Visual Studio. Data is received from a medical information system and inserted into the template using data binding, and the resulting document is sent to the printer. I implemented some of the converters (data converter, barcode converter). I also fixed some bugs.

I developed a barcode printing subsystem that works together with the medical and laboratory information systems. The barcode system allows users to print barcodes on Zebra printers using EPL/ZPL.

The online life insurance project allows you to select the best life insurance according to different criteria. I participated in the initial system design and the selection of the technology stack.

The fiscal subsystem that I developed works together with the medical and laboratory information systems, and it allows users to print fiscal checks on fiscal devices.

A tool to send SMS to the clients: SMS are read from a database (any database could be used, database stored procedures are used to retrieve data from the database) and sent to the client.

Several versions of the tool are available using:
- A specific model of the USB 3G modem
- SOAP or HTTP to connect to one of the mobile phone providers

An Android app designed and implemented to solve the famous Lumosity puzzle Pet Detective. This application was created because it is not easy to solve Pet Detective at high levels, and sometimes the solution is not obvious at all. The PoC for this application was written using Python and OpenCV. The Android version was written using Kotlin and OpenCV. The challenge could be solved on the server side and was written in Java Spring. A Docker container was created for the server-side application. With the help of this application, the game record was improved several times.

A C# application to backup, compare and restore Microsoft SQL schemas. The application is created under the MIT license and is freely available on GitHub.

I implemented:
- A feature to backup database objects' permissions
- A bug fix to correctly process overwrite flags

State Street Corp's OTC service is designed to process financial data. The solution permits the processing of derivatives by providing valuations and validations to reduce pricing risk. The data is received from different sources and processed according to the rules; the processing result is written to the database. I was the team lead and back-end developer. I participated in the design and implementation of the OTC Service, which runs as a daemon on the Linux system (a Windows version was also available). I created a plugin infrastructure for the service with a bunch of different plugins to extract data from different sources. I reviewed all source code of the application to make it secure, conformant with source code security standards, and to pass all the tests from one of the leading application security companies.

OTC Interpreter is a library that is used to interpret and execute expressions written in OTC language. OTC Interpreter is a core component of the OTC Service and is used to evaluate the business rules. The OTC language supports variables, math and logic operations, and other functions. OTC Interpreter was written using ANTLR grammar. I designed and implemented the OTC Interpreter.

A plugin for State Street Corp's OTC service. Its task is to download messages from IBM MQ (for processing by Message Center) and to upload back results of processing. My task was to read the IBM MQ documentation, understand IBM MQ API, write the plugin, and test it. Two versions of plugins were created: for the client and for server installation of IBM MQ (linked against different libraries).

The ProcessGuard application is similar to a standard Unix/Linux service daemon. The main idea is to start services indicated in the configuration and to control them (restart, kill) depending on the needs. I designed and implemented the ProcessGuard application.

An Apache module for OTC Service is a library, that is loaded by the Apache HTTP server and serves as a proxy between the user and OTC Service. The module is designed to handle requests to specific URLs and to redirect them to the Message Center. I designed, implemented, and maintained this library. One of the most important implemented features was load balancing between several instances of OTC Service.

Eagle Investment Systems' message center module serves as the integration hub supporting real-time messaging and dissemination of reference data to multiple SBA investment applications. It includes electronic STP links with the Bloomberg portfolio order management system (POMS) for fixed income trading and SBA's equity trade order management system. Eagle PACE also provides a comprehensive investment data repository supporting securities accounting, performance measurement, and market/analytical data as well as a web-based portfolio management reporting framework. I was the team lead and back-end developer. I participated in the design and implementation of the service, which runs as a daemon on the Linux system (Solaris/Windows version are also available) with a lot of modules/libraries that I implemented.

STARParser is a library that is used to interpret and execute expressions written in STAR language. STARParser is a core component of Eagle Investment Systems' Message Center and is used to evaluate the business rules. The STAR language supports variables, math operations, an iif operator, dozens of string and date functions, and other functions. STARParser was written using ANTLR grammar. I designed and implemented the STARParser library.

A plugin for Eagle Investment Systems' Message Center. Its task is to download messages from Tibco Rendezvous software (for processing by Message Center) and to upload back results of processing. My task was to read the Tibco Rendezvous documentation, understand Tibco Rendezvous API, write the plugin, and test it.

The XMLDBAPI is a library that abstracts database interface. The library is used by Message Center to connect to the database. The specific database connector is implemented using plugins. I implemented the library and several plugins, like OCI plugin (for Oracle) and OLEDB plugin (for SQL Server), and I implemented bulk insert support for the plugins to permit bulk data processing. The XMLDBAPI library could be used to interconnect several MessageCenter instances. A separate plugin was designed to implement this functionality.

The SyncSend is a library to send messages between the Message Center and other back-end services. SyncSend uses its own binary protocol to send messages, it uses non-blocking TCP sockets. The library is multithreaded, the message processing is separated from the message receiving, this way low latency is obtained. I implemented different features and fixed bugs.

Apache Module for Message Center is a library that is loaded by the Apache HTTP server. It serves as a proxy between the user and Message Center. The module is designed to handle requests to specific URLs and to redirect them to the Message Center. I implemented different features, the most important among them being load balancing between several Message Center instances, and I fixed bugs.

A firmware for gas consumption flow computer. The consumption of natural gas is calculated according to the information that is read from the sensors connected to the device. The device was installed at natural gas pump stations across the country. The firmware was written in C and Assembler, and the back end was written in Borland C++.

A bank-client subsystem for one of the local banks. The data exchanges were done using secure mail messages (S/MIME protocol). I was responsible for the security subsystem and implemented the following modules:

- A certificate authority module (to issue and revoke certificates)
- A module that signs/encrypts mail on sent items and decrypts/checks signature on reception

The solution was written in Java using the JCSI security library.

The data exchange software was used in the Moldovan parliamentary election. It allowed secure data exchange between Central Electoral Commission and local commissions. The data exchanges were done using secure mail messages (S/MIME protocol).

I was responsible for the security subsystem and implemented the following modules:

- A certificate authority module (to issue and revoke certificates)
- A module that signs/encrypts mail on sent items and decrypts/checks signature on reception

The solution was written in Java and used the JCSI security library.