Open to opportunities

Alexander Chernykh

@alexanderchernykh1

Java Backend Developer with 5+ years building high-load fintech microservices and real-time streaming systems for fault-tolerant SaaS.

Zimbabwe

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What I'm looking for

I’m looking to join a team building complex, fault-tolerant SaaS products where I can deliver business value through high-load Java microservices, real-time data streaming, and reliable transaction and exchange integrations.

I’m a Java Backend Developer with 5+ years designing high-load systems, with a focus on fintech solutions, microservices architecture, and real-time data streaming. I care about the business value of code—from transaction reliability to real-time client interaction—and I build systems that stay dependable under pressure.

At Axiomatika LLC, I designed and implemented 10+ microservices from scratch using Java 17, including order execution engines (Margin Call, StopLoss, Take Profit) and real-time balance recalculation. I also built fault-tolerant WebSocket clients for major exchange integrations (Binance, dxFeed) and ensured market data transmission with latency under 2 seconds under high load, and earlier I designed settlement systems and CRM for international e-commerce clients while optimizing secure high-load processing and leading code reviews.

Experience

Work history, roles, and key accomplishments

Java Backend Developer

Axiomatika LLC

Jan 2023 - Jan 2026 (3 years)

Designed and implemented a system of 10+ microservices for a high-load trading platform using Java 17, including order execution engines with real-time balance recalculation. Built fault-tolerant WebSocket clients for major exchange integrations and maintained market data transmission latency under 2 seconds under high load.

Concurrency Multithreading WebSockets Hibernate Microservices Clean Architecture high load systems PostgreSQL Redis HikariCP Docker Maven Mockito Real Time Data Streaming Fault Tolerance Exchange Integration Pl SQL

Backend Developer

WebTech Solutions & Financial Institutions

Jan 2019 - Jan 2022 (3 years)

Designed settlement systems and a CRM for international e-commerce clients, optimizing high-load processing modules and ensuring secure transaction processing. Managed team development work, including task decomposition and performing code reviews.