Principal Engineer, Spark (BTC/ETH/L2)

The Principal Engineer will design, build, and scale distributed backend services powering Spark, owning system architecture for highly available, low-latency services processing real-time global transactions. Responsibilities include extending and enhancing protocol capabilities for new assets and payment flows, writing high-quality, production-grade code across multiple domains, and analyzing complex distributed behaviors in adversarial environments to design resilient systems. The role involves working directly with leadership to influence long-term protocol direction and technical strategy, mentoring engineers, and adapting quickly to new challenges such as designing new systems, debugging complex distributed behaviors, or scaling production infrastructure.