Senior C# Backend Developer (Crypto Trading)

TL;DR

Senior C# Backend Developer (Crypto Trading): Building and optimizing high-load backend services for a distributed crypto trading platform with an accent on API design, messaging systems, and database optimization. Focus on microservices architecture, solving complex concurrency challenges, and ensuring system reliability under heavy traffic for a derivatives exchange.

Location: Fully remote from anywhere in the world

Company

hirify.global is building a trading direction (a spot and derivatives exchange) as a startup within a larger crypto ecosystem.

What you will do

• Develop and maintain backend services for a crypto exchange using C#/.NET.
• Design and evolve a distributed, high-load architecture.
• Build and maintain APIs (gRPC/REST) and integrations with internal services.
• Work with messaging and streaming systems (Kafka / RabbitMQ).
• Work with storage systems (PostgreSQL, Redis) and optimize them for high load.
• Contribute to engineering practices including testing, code reviews, and technical design.

Requirements

• 5+ years of commercial experience with C#/.NET.
• Strong background in high-load distributed backend systems.
• Solid production experience with gRPC.
• Hands-on experience with PostgreSQL.
• Experience with Kafka or RabbitMQ.
• Basic understanding of trading and finance logic (balances, P&L, trade reporting).

Nice to have

• Experience with ClickHouse.
• Background in trading, crypto exchanges, or algo-trading.

Culture & Benefits

• Fully remote work with flexible hours and focus on results.
• 20 working days of vacation + 12 additional bonus days.
• 100% paid sick leave with minimal bureaucracy.
• Real ownership, complex technical challenges, and the chance to shape a core trading product.