Berik Argimbayev

Lead Crypto Backend Developer

SpaceDevLab

Led CryptoHub's shift from internal use to external partners and cut partner transaction costs by up to 6x across 15 blockchain networks.

• Led the development of CryptoHub, a crypto-processing-as-a-service product, taking it from serving the company's internal services to onboarding external partners. • Automated partner fund management and optimized fees across 15 blockchain networks, reducing costs by up to 6x through flexible payment collection, address reuse, and prioritized address selection for payouts. • Implemented risk-based routing: graded payment risk and routed funds according to risk level.

Senior Backend Developer

eMoney

Reworked blockchain processing and integrations, added KYT and multi-network support, and built lending and reporting services.

• Rebuilt blockchain transaction processing, unifying logic across networks and simplifying maintenance and feature delivery. • Implemented support for multiple networks for a single cryptocurrency and introduced KYT checks. • Developed a crypto-collateralized lending service as part of a three-person team. • Built a financial reporting service to monitor key platform metrics. • Improved the resilience of blockchain integrations by adding circuit breakers, automatic failover to backup nodes, and failback after recovery.

Junior to Middle Golang Developer

Darwin Tech Labs

Built crypto-arbitrage and trading infrastructure, exchange integrations, and trading strategies during progression from junior to middle developer.

• Developed a crypto-arbitrage bot for CEXs and DEXs that used real-time market data to seek profit from price differences. • Implemented flash-loan arbitrage, reducing initial capital requirements and execution risk. • Enhanced a cryptocurrency exchange library with support for 10+ exchanges, futures, WebSocket subscriptions, and efficient order-book storage using a red-black tree. • Improved order management through message queues, increasing execution control accuracy.

Software and Hardware Developer

AltF4

Designed the electronics and software for a portable oxygenation device with heart-rate and blood-oxygen sensors.

• Designed and developed electronics and software for a portable oxygenation device integrating heart-rate and blood-oxygen sensors.

Bachelor's, Electrical and Electronic Engineering

Nazarbayev University