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Senior
Registration: 15.08.2026

Georgii Kalashnikov

Specialization: .NET Architect / Team Lead
— 10+ years restoring performance and integrity in high-load OLTP/OLAP enterprise systems. — Eliminates hundreds of daily deadlocks on sharded SQL Server databases via aggregate composition and T-SQL optimization. — Reduces codebase size 3× through modularity and mixin-based composition patterns. — Author of open-source production-ready transaction-centric .NET OLTP framework. — Mentors teams of 10+ on DDD, GoF patterns, Clean Architecture, and transaction integrity. — Specializes in restoring development velocity in mature legacy systems without full rewrites.
Git PostgreSQL SQL JavaScript Docker React Jira C# .NET .NET Core ASP.NET API Software architecture SQL Server T-SQL Oracle database Kubernetes DDD Domain Specific Languages OLAP saas Entity Framework REST TypeScript RabbitMQ Azure Microservices
— 10+ years restoring performance and integrity in high-load OLTP/OLAP enterprise systems. — Eliminates hundreds of daily deadlocks on sharded SQL Server databases via aggregate composition and T-SQL optimization. — Reduces codebase size 3× through modularity and mixin-based composition patterns. — Author of open-source production-ready transaction-centric .NET OLTP framework. — Mentors teams of 10+ on DDD, GoF patterns, Clean Architecture, and transaction integrity. — Specializes in restoring development velocity in mature legacy systems without full rewrites.
Git PostgreSQL SQL JavaScript Docker React Jira C# .NET .NET Core ASP.NET API Software architecture SQL Server T-SQL Oracle database Kubernetes DDD Domain Specific Languages OLAP saas Entity Framework REST TypeScript RabbitMQ Azure Microservices

Skills

C#
.NET Core
ASP.NET Core
SQL Server
DDD
Clean Architecture
PostgreSQL
EF Core
Dapper
Azure Service Bus
RabbitMQ
Microservices
T-SQL
Oracle
Docker
Kubernetes
React
TypeScript
JavaScript
Angular
CQRS
Event Sourcing
High-Load Design
Outbox Pattern
Azure Service Fabric
Keycloak
OLAP
Embedded C
Git
BPMN

Work experience

Software Architect & Consultant
since 07.2020 - Till the present day |NDA
C#, .NET Core, ASP.NET Core, SQL Server, PostgreSQL, DDD, Clean Architecture, Open Source
● Designed and developed open-source production-ready transaction-centric OLTP frameworks for any ORM, broker, SQL/NoSQL. ● Restored development velocity in high-load systems by eliminating architectural bottlenecks and tech debt. ● Authored open-source reference architecture for .NET OLTP systems.
Software Architect
05.2024 - 12.2025 |Severstal-Infocom
C#, .NET Core, SQL Server, RabbitMQ, Kubernetes, Keycloak, Angular, DDD, BPMN
● Led MES distributed monolith mitigation and system decomposition. ● Integrated SAP, KMS, SCADA, and QMS systems with the enterprise platform. ● Eliminated dead code and improved observability and authorization flexibility. ● Formalized tech debt and produced BPMN/UML/C4 documentation. ● Configured RabbitMQ MQTT DMZ, Kubernetes, and Keycloak infrastructure. ● Mentored frontend and backend developers including Angular.
Lead Software Developer / R&D Engineering Lead
12.2014 - 06.2023 |NDA
C#, .NET Core, ASP.NET Core, SQL Server, PostgreSQL, Azure Service Bus, RabbitMQ, DDD, React, TypeScript, Webpack
● Eliminated hundreds of daily deadlocks on dozens of sharded SQL Server databases at a major US CRM platform. ● Introduced Azure Service Bus and Outbox pattern into a legacy 12-year-old ADO.NET system. ● Decomposed transactions and eliminated deadlocks via aggregate composition and flexible T-SQL. ● Trained 10+ developers on fault-tolerant processes, GoF patterns, DDD, and transaction integrity. ● Built a subscription module for Braintree-based billing plus Structurely and Revaluate integrations in 3 months. ● Implemented Twilio A2P 10DLC — one of first correct implementations among Twilio clients. ● Evolved OLTP/OLAP systems, modularity, and micro-frontend React/TS/Webpack across multiple US and international projects. ● Built OLAP streaming pipeline with event sourcing and Jint for international clients. ● Established code review culture and mentored distributed teams on domain boundaries and transaction integrity.
Embedded Software Engineer
06.2013 - 11.2014 |NPP KP Kvant
Embedded C, Atmel MCU, STM32
● Developed embedded software in C for Atmel/STM microcontrollers.

Educational background

Mathematical Software & IS Administration (Masters Degree)
2008 - 2014
Don State Technical University

Languages

RussianNativeEnglishAdvanced