Sergey Korobeynikov
.NET Core / Full-Stack Developer
Skills
.NET Development
- .NET Core
- EF Core
- XAF DevExpress
Web Development
- TypeScript
- HTML
- CSS
- Nuxt.js
- Tailwind CSS
- OpenLayers
- SignalR
RDMS
- Microsoft SQL Server
- PostgreSQL
Smart card technologies
- EMV
- MIFARE
Operating Systems
- Windows Server
- Linux
- CentOS
- Debian
- Ubuntu
Networking and Telecommunications
- IP-PBX
- Asterisk
- E1
- PRI
- Cisco
- MikroTik
- RouterOS
- BGP
- OSPF
- BFD
- VPN
- IPSec
- IKEv2
- SSTP
- netflows
Work Experience(3)
Designed and engineered scalable location-based platform architecture and full-stack services using .NET Core, Nuxt.js, OpenLayers for geospatial visualization, and SignalR for real-time services.
Provision of comprehensive support for the enterprise telecommunications infrastructure:
Designed and implemented a resilient corporate LAN with traffic failover and redundancy based on BGP routing protocol.
Migrated legacy telephony infrastructure to IP telephony using an Asterisk-based IP-PBX system.
Provided comprehensive support for enterprise IT infrastructure and proposed improvements to optimize business processes:
Designed and deployed corporate IT infrastructure, including Active Directory-based network, Microsoft SQL Server database, mail system (Postfix, Dovecot, Roundcube), and Asterisk-based telephony solution.
Designed, developed, and implemented a microloan application processing system for small business clients, enabling remote submission and workflow automation using .NET Core and DevExpress XAF.
Developed a financial reporting system for cash flow reporting to the Central Bank of the Russian Federation using .NET Core and DevExpress XAF.
Designed a data model for integration and reporting of borrower information to credit bureaus, including Equifax and the National Bureau of Credit Histories (NBKI).
Developed data exchange tools integrating the Federal Treasury “Electronic Budget” system with 1C, enabling automated data synchronization between platforms.
Projects(4)
- .NET Core
- Asterisk
- AMI
- FastAGI
- Queue
- CDR
- CEL
- AEL
Designed and developed a supervisory management system for Asterisk, enhancing its base capabilities to support call center supervision and executive-level reporting:
web interface for interaction;
real-time monitoring of queues and active connections with the ability to respond quickly to changes and adjust operator workflows;
operator authentication for creating shared workstations (service level includes queue handling, whisper coaching features, and access to international calling, available from any location, with all actions properly reflected in statistics and reports);
call distribution based on operator skills and competencies;
call hold and retrieval after a failed blind transfer;
incoming call routing to a shared number based on the caller’s previous contacts (calls or missed calls);
access to call detail records and call recordings with role-based access control and information security requirements.
- .NET Core
- Microsoft SQL Server
- Smart Cards
- EMV
Software for automating the accounting of employee compensation for meal expenses, provided either in kind or in monetary form, as stipulated by an employment contract or collective agreement.
Designed and implemented loosely coupled integrations with HRM systems for employee master data synchronization and payroll deductions export.
Developed a flexible configuration system for meal compensation policies, including minimum purchase thresholds, daily limits, and compensation frequency.
Implemented employee identification via existing EMV bank cards.
Built reporting module with three report types: detailed cash report, receipt analytics by weekday, and aggregated summary report.
- .NET Core
- Smart Cards
- EMV
- ICAO 9303
- eMRTD
- mDLs
- DESFire
A ready-to-use tool for a wide range of trusted identity use cases: bank cards (EMV), machine-readable travel documents (eMRTD, ICAO 9303), driving licences (mDLs, ISO/IEC 18013), transit cards, as well as DESFire-based credentials.
- CDEK
- .NET Core
- API
- REST
Developed an unofficial open-source .NET client library for the CDEK API v2.0 with full endpoint coverage.
Education(1)
Languages(3)
Russian
English
Kazakh
Interests(3)
Geography
- Trips
- Urbex
- USA
- Balkans
Amateur radio
- R9ODS
- AnyTone
- Yaesu
- 73
Cooking
- Shashlik
- Pork ribs
- Ear
- Italian