Dmitry Matveyev

Project: Enterprise platform for regulated subscriber enrollment and compliance

• Migrated Web API layer of enterprise application from .NET Framework 4.7 to .NET 8 - covering auth (OWIN → ASP.NET Core), DI infrastructure, ORM, business logic, and PDF operations; eliminated ~15 legacy/deprecated dependencies and modernized CI/CD pipelines
• Designed and implemented event-driven logging architecture using Azure Event Hubs - replaced direct DB logging with a centralized pipeline syncing to Cloud and On-Premises databases, reducing infrastructure costs
• Resolved high-impact production performance issues: removed ~350GB of unused indexes (eliminated ~38.8M daily wasted reads), diagnosed a memory leak using a custom dump-comparison tool I built (root cause: incorrect DI lifetime registration), and cleared a 21-month archival backlog of 1.5M records via batched deletion
• Revived abandoned integration test suite and integrated it into the CI/CD pipeline, catching regressions in complex business logic before release
• Implemented email-based 2FA for the user enrollment flow (DB schema, backend code generation/validation, frontend, feature flagging)
• Integrated AI-assisted development workflow (Copilot + Claude) into daily engineering practice, including subagents and MCP server usage for repetitive tasks

Technologies: .NET 8, .NET Framework, ASP.NET Core, Entity Framework Core, Azure Event Hubs, Azure SQL Database, SQL Server, NLog, RabbitMQ, Azure DevOps, GitHub Copilot, Claude

Project: Retail chain management system with hardware integration

• Developed features for large-scale retail operations platform using Azure Service Bus for async messaging
• Collaborated on system architecture decisions for hardware-software integration

Technologies: .NET Framework, SQL Server, Redis, Azure Service Bus, Azure Web Apps/Jobs

September 2021 - October 2022

Project: Last Outlander (mobile game backend)

• Scaled team from 5 to 9 engineers: hired 3 developers and 1 system architect, conducted technical interviews
• Implemented Scrum methodology, significantly reducing estimation variance and improving stakeholder visibility
• Led database migration from CosmosDB to MongoDB to reduce costs and overcome platform limitations
• Decoupled microservices into separate repositories, enabling independent deployment pipelines
• Established production monitoring rotation and incident response procedures

Technologies: .NET Core, MongoDB, Redis, Azure (Event Hubs, Blob, Application Insights), Docker, Kubernetes, Scrum

August 2020 - August 2021

• Architected microservices communication layer: standardized service SDK pattern and API contracts
• Migrated client-server communication from WebSocket RPC to REST, improving maintainability and performance
• Built game configuration microservice enabling rapid A/B testing iterations
• Implemented authentication microservice with token-based security
• Conducted performance testing and optimization using JMeter

Technologies: .NET Core, MongoDB, Redis, Azure Event Hubs, Docker, Kubernetes, JMeter, Kanban

Project: Tax consulting platform - core infrastructure

• Developed infrastructure components for enterprise tax consulting system
• Performed data migrations between system generations, ensuring data integrity
• Conducted performance profiling and optimization for high-load scenarios
• Maintained test coverage and performed code reviews; acted as team lead backup

Technologies: .NET Core, SQL Server, MongoDB, Redis, Azure, Docker, Scrum

Project: Payment processing service (IDT Corporation)

• Built microservices in Go with gRPC for sensitive payment data handling
• Performed database migrations and integrated external SOAP services
• Developed POC projects: Slack chatbot with Google Sheets integration, gRPC-based chat system

Technologies: Go, gRPC, Oracle DB, MongoDB, Docker, Google Sheets API

Project: e-470 toll road system modernization

• Participated in architectural migration from stored procedure-heavy SQL Server implementation to .NET-based SOA
• Established unit testing practices using NSubstitute; performed performance profiling and optimization

Technologies: ASP.NET Web API, Azure, SQL Server, Dapper, FluentMigrator, Unity DI

Project: Surefire - mortgage CRM

• Migrated codebase from .NET to Node.js; set up Docker-based test environment on Linux
• Conducted code reviews, mentored junior developers, and performed load testing

Technologies: ASP.NET Web API, Node.js, MySQL, SQL Server, Docker, JMeter

Industrial automation software (CNC systems, CAD/CAE, web portals)

• Promoted to Team Lead: made architectural decisions, chose technologies, mentored juniors
• Built enterprise information system for CNC machines (ASP.NET Web API + WPF)
• Developed desktop applications and custom WPF controls with multi-database support (SQL Server, Oracle)

Technologies: ASP.NET Web API, WPF, SQL Server, Oracle, Entity Framework, Autofac

Betting system platform

• Developed betting terminal UI and indices calculation; optimized SQL stored procedures

Technologies: WPF, ASP.NET WebForms, WCF, SQL Server