Krzysztof Ziolkowski

Senior Solana/Backend Engineer | DeFi & Trading Infrastructure

📍 Poland, Remote

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8 years building backend systems, last 3 focused on Solana. I write Anchor programs, real-time data pipelines (Helius, Geyser), and the NestJS/TypeScript services that sit behind them. Most of my work lives at the intersection of DeFi and payments: stablecoin integrations (Circle/USDC), trading execution, wallet analytics, webhook infra. Also comfortable with Kafka, Kubernetes, and AWS when throughput is the problem. Available immediately for freelance or contract work. algo.2137.dev / 2137.dev

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