Open to opportunities

Алексей Пашкин

@0003265

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Senior Software Engineer specializing in C#/.NET high-load payment systems and microservices.

Zimbabwe

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What I'm looking for

I’m looking to build fault-tolerant, high-throughput C#/.NET platforms—working on microservices and event-driven systems with strong observability, pragmatic engineering, and opportunities for technical leadership and mentoring.

I’m a Senior Software Engineer with 12+ years building high-load financial systems and payment processing platforms that handle millions of transactions per day. I focus on microservices architecture and event-driven systems, combining pragmatic engineering with production-grade reliability.

I’ve worked across the full lifecycle of systems: designing fault-tolerant payment workflows with CQRS patterns, optimizing databases (PostgreSQL, MS SQL, Redis), and resolving production incidents. I’ve delivered measurable performance wins like sub-200ms query response times and ~25% load reduction, while avoiding overengineering.

In my recent roles, I’ve led technical direction and architecture work—building payment-operation filtering with zero-downtime plans, refactoring high-traffic document processing, and proposing recovery solutions based on existing infrastructure. I also built trigger-based feedback systems and monitoring to enable data-driven decisions for bank teams.

I actively integrate AI-assisted development into daily workflows (Claude Code and locally-hosted LLMs) to speed up documentation, DTO generation, and architecture exploration. I enjoy mentoring and code reviews, and I bring strong root cause analysis to cross-service coordination and troubleshooting.

Experience

Work history, roles, and key accomplishments

Current

Chief Software Engineer

Current

PSB Corporate

Jun 2025 - Present (1 year 1 month)

Built a filtering system for payment operations, including zero-downtime migration of 440K+ records and achieving sub-200ms query response time on a 1M+ dataset. Led systems and recovery initiatives, including Grafana monitoring, a trigger-based customer feedback architecture, AI-assisted API documentation/DTO generation, and resolution of a critical transaction import bug.

Grafana Rebus Outbox Pattern DTO Transaction Import Bug Triage

Staff Software Engineer

B2B-Center

Jul 2024 - Jun 2025 (11 months)

Refactored scheduled job processing into an event-driven architecture to remove 30s+ user waits and enable real-time status updates. Implemented CQRS with Redis caching and built a fault-tolerant payment gateway using a two-phase commit protocol, mentoring 11 engineers.

Event Driven Architecture CQRS Redis Two Phase Commit Payment Gateways Real Time Updates Microservices Technical Mentoring Claude Code

Software Architect

Computing Solutions

Mar 2021 - Jul 2024 (3 years 4 months)

Developed a vulnerability management system that reduced scan time from 1–2 minutes to 15–25 seconds. Implemented a multi-language attack-indicator analyzer and proposed an ML-based suspicious software detection system improving accuracy by 40%.

Vulnerability Management Scan Time Optimization Machine Learning (ML)

Senior Software Engineer

OTC.RU

Mar 2018 - Mar 2021 (3 years)

Decomposed a monolith into 25+ services, accelerating feature delivery from 3 days to 2 hours. Migrated services from .NET Framework 4.5.2 to .NET 6, reducing resource utilization by 38% and supporting modern deployment practices.

.NET 5 6 Technical Mentoring