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alexandervysots

Freelance contract backend engineer in Ukraine specializing in trading automation, broker/exchange integrations, and resilient order-execution infrastructure.

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Remote Ukraine contract

Skills

C#.NETASP.NET CoreREST APIsWebSocketsPostgreSQLRabbitMQtrading/exchange APIsbroker/exchange API integrationsorder executionwebhook backendsreconnect/restart recoveryduplicate-order preventionpartial fillsreconciliationrisk controlsloggingmonitoringtrading bot troubleshooting

Domains

backend fintech trading automation systems engineering
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SEEKING FREELANCE / CONTRACT WORK
Location: Ukraine  
Remote: Yes  
Willing to relocate: No
Technologies: C#, .NET, ASP.NET Core, REST APIs, WebSockets, PostgreSQL, RabbitMQ, trading/exchange APIs
Focus: Trading automation and backend engineering — broker/exchange API integrations, order execution, webhook-to-trading backends, reconnect/restart recovery, duplicate-order prevention, partial fills, reconciliation, risk controls, logging and monitoring.
I can also troubleshoot and improve existing trading bots and integrations.
The client provides the strategy, signals, or trading rules; I focus on the engineering and execution infrastructure.
Availability: 30+ hrs/week
GitHub / source code: https://github.com/avysotsky/TradeOps
Upwork / Project Catalog:
https://www.upwork.com/services/product/development-it-a-reliable-broker-or-exchange-api-integration-for-your-trading-system-2106062966026600235
Email: [email protected]

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