Senior Backend Engineer (Go)
BestowFull Time
Mid-level (3 to 4 years), Senior (5 to 8 years)
Candidates should have 8+ years of backend experience in Go, Java, Kotlin, or Rust, with at least 2 years in Staff+ roles at a fintech or crypto startup. Deep knowledge of payments and wallet infrastructure, including card networks, ISO 8583, PCI, and tokenization, is required. Experience designing ledger systems with consistency, reliability, and reconciliation, along with hands-on experience building crypto or stablecoin rails and blockchain integration, is also necessary. Experience enabling agentic shopping and a strong understanding of distributed systems, event-driven architecture, and microservices are essential qualifications. Familiarity with KYC/AML workflows, blockchain compliance tools, and building intelligent recommendation or agentic shopping logic are considered advantageous.
The Staff Backend Engineer will design and implement backend services for universal wallet infrastructure, including multi-currency wallets, KYC/AML compliance, secure ledgering, and stablecoin minting/burning. They will build crypto on-ramps/off-ramps, P2P transfers, and blockchain-routed settlement systems, as well as manage payment acquisition, routing, reconciliation, and settlement. Responsibilities include building distributed systems with high uptime and low latency, collaborating with external partners, leading architectural decisions, integrating fraud and compliance systems, and partnering with cross-functional teams to enhance shopping flows. Additionally, the role involves mentoring backend engineers and defining best practices for wallet and crypto services.
Provides seamless one-click payment solutions
Bolt improves the online shopping experience by providing secure payment solutions for e-commerce businesses. Its main product is a one-click checkout system that simplifies the payment process for online shoppers. This system includes features like Passkey, which allows users to log in and check out using methods such as PIN, Touch ID, and Face ID, making transactions faster and more secure. Bolt differentiates itself from competitors by guaranteeing a 20% increase in conversion rates for merchants, or they offer a money-back guarantee, showcasing their confidence in their technology. The goal of Bolt is to help online retailers enhance customer satisfaction and boost sales through a seamless checkout experience.