Senior Software Engineer (Sphere Pay)- Work closely with another senior engineer in leading out a nimble but world-class team of 3-4 engineers to shape, build, and maintain our existing payments business. This includes front-facing products, integration of external partners (from money transmitters and banks, to compliance vendors, exchanges, and trading counterparties), to internal tools for payment ops automation, ledgering, reconciliation, and liquidity management.- Directly contribute to core interface design and write code. Rationally scrutinize and clearly consider the technology and architecture choices we make in building products that our customers want. In many cases, you will be the key decision maker.- Help drive the design, development, and maintenance (whether new or existing) of our low-latency microservices, databases, developer tooling, and distributed systems core. Ensure that these systems are reliable, available, efficient, and scalable.