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Max Petrochenko

@maxpetrochenko

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Senior .NET engineer building scalable enterprise systems with Clean Architecture, CQRS, and reliable integrations.

Belarus

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What I'm looking for

I’m looking for a Senior role where I can own enterprise .NET architecture and backend delivery, lead CI/CD and reliability, mentor teams, and collaborate with clients—preferably remote, or hybrid in Minsk—while building scalable, maintainable systems.

I’m a Senior .NET Engineer with 8+ years of commercial experience, focused on redesigning legacy monolithic systems into modern, scalable architectures. I specialize in enterprise system architecture and backend development, with a strong track record of shipping production-grade platforms.

In recent work, I’ve designed and delivered a Clean Architecture + CQRS backend (MediatR) for SmartPOS payments, including secure JWT auth, webhook processing with signature validation and idempotent state transitions, and background automation via Quartz.NET. I also implemented high-throughput integrations with caching and resilient request pipelines, using Redis to improve performance and reliability.

Earlier, I architected a full system redesign for a Manufacturing Execution System (MES), established CI/CD pipelines and test infrastructure (xUnit, Testcontainers, BenchmarkDotNet), and mentored developers on architectural patterns and TDD. I’ve also built real-time IoT workflows with Azure IoT, SignalR, and OneSignal, and developed Solidity smart contracts with strong test coverage and security practices.

Experience

Work history, roles, and key accomplishments

Current

Senior .NET Developer

Current

Self-Employed

Jan 2026 - Present (6 months)

Built backend systems for QR-based SmartPOS payments and an e-commerce backend (order creation, payment orchestration, PDF fulfillment, mailing, localization, and staff administration). Delivered secure auth flows, payment/webhook orchestration, background processing with Quartz.NET, and containerized CI/CD deployments.

ASP.NET Core C#MediatR CQRS Npgsql PostgreSQL Redis Quartz.NET JWT Docker Docker Compose Jenkins AutoMapper Mapster Webhooks Traefik

Senior .NET Developer

K-Solutions

Jun 2025 - Dec 2025 (6 months)

Redesigned a Manufacturing Execution System (MES) from a legacy monolith to a modern 4-tier hybrid service architecture. Implemented CI/CD with Jenkins and multi-environment Docker deployments and built test infrastructure using xUnit, Testcontainers, and BenchmarkDotNet.

ASP.NET Core Code First PostgreSQL Npgsql CRUD Search Dynamic Properties Tree Operations (Architecture Patterns)Docker Jenkins Harbor Registry xUnit Moq Test Containers BenchmarkDotNet Mapster Serilog OpenAPI NSwag

Solidity Developer

Hinkal Protocol

Jul 2024 - Sep 2024 (2 months)

Developed and tested Solidity smart contracts for a zero-knowledge privacy DeFi protocol with integration to DeFi systems. Implemented security and upgradeability practices aligned with OpenZeppelin standards and delivered thorough test coverage with Hardhat.

Solidity Yul EVM Hardhat TypeScript Smart Contract Testing

Full-Stack .NET Developer

InCheq

Mar 2021 - Jun 2024 (3 years 3 months)

Developed a global inspection and maintenance management system with real-time IoT integration. Designed an Azure IoT device twin simulator, built real-time notifications via SignalR and OneSignal, and delivered RESTful APIs supporting role-based access control and multi-tenancy for web and mobile apps.

ASP.NET MVC NHibernate Azure IoT Hub SignalR OneSignal React React Native Twilio Vimeo SQL Server RESTful APIs Role Based Access Control

Full-Stack .NET Developer

Axure

Aug 2019 - Jan 2021 (1 year 5 months)

Modernized front-end and backend components for an Azure portal billing/service management application and an internal support tool migration to .NET Core. Migrated a legacy jQuery/ASP.NET MVC4 app to Vue.js with an ASP.NET Core backend and implemented a billing module integrating Braintree for recurring subscriptions.

ASP.NET Core Vue.Js jQuery MySQL NHibernate Braintree .NET Framework .NET Core

Full-Stack .NET Developer

ActiveLife Technology

Jan 2018 - Jul 2019 (1 year 6 months)

Built a healthcare CRM system covering the full sales cycle and integrated external vendor workflows. Implemented a RESTful API for healthcare equipment vendors and migrated legacy data into a modern web application while ensuring data integrity for 10,000+ customer records.

ASP.NET Core MS SQL Server SVN RESTful APIs Data Migration

Junior .NET Developer

AlfaBank

Oct 2016 - Dec 2017 (1 year 2 months)

Developed a client debt management module for PKO cash and settlement services and built debt analytics for bank specialists. Integrated data between IBM DB2 mainframe and MS SQL Server systems while working within financial compliance and security requirements.

VB.NET MS SQL Server IBM DB2 C C++Data Integration Financial Services