Alpaca is a US-headquartered, global leader in agent-first brokerage infrastructure for stocks, ETFs, options, crypto, fixed income, 24/5 trading, and more. Amongst our subsidiaries, Alpaca is a licensed financial services company, serving hundreds of financial institutions across 40 countries with our institutional-grade APIs. This includes broker-dealers, investment advisors, wealth managers, hedge funds, and crypto exchanges, totalling over 10 million brokerage accounts. Our global team is a diverse group of experienced engineers, traders, and brokerage professionals who are working to achieve our mission of opening financial services to everyone on the planet. We're deeply committed to open-source contributions and fostering a vibrant community, continuously enhancing our award-winning, developer-friendly API and the robust infrastructure behind it. Alpaca is proudly backed by $400 million in funding from top-tier integral investors including Portage Ventures, Spark Capital, Tribe Capital, Social Leverage, Horizons Ventures, Opera Tech Ventures, SBI Group, Derayah Financial, Unbound, Peak XV, Elefund, and Y Combinator. We are seeking a Staff Software Engineer to lead the technical direction of our Margin & Risk team, part of Prime Engine. This role is expected to work across those asset classes, not own a single product line: portfolio and intraday margin, options risk, crypto risk controls, and the margin models for new products as they come online. You will be the senior technical anchor for the domain, working with the engineering manager and the senior engineers on the team to spread deep ownership as it grows. Drive reliability and performance across the team's services: throughput, state recovery, database load, and failure isolation. Partner with Product, Brokerage Operations, Compliance, and adjacent engineering teams (order management, ledger, account, market data) to define behavior and integration boundaries. Set the standard for correctness in a financial system: transactional integrity, idempotency, reconciliation, feature flags, and staged rollouts. Lead design reviews, mentor senior and mid-level engineers, and raise the engineering bar as the team grows. 8+ years of backend or distributed-systems experience. Proven ownership of a high-volume system where a defect could cause financial loss, a data-integrity failure, or an inappropriate customer restriction. ~ Strong expertise in Go, or deep experience in Java, C++, or Rust and a clear willingness to work primarily in Go. Deep knowledge of relational databases (PostgreSQL preferred), transactions, consistency, and concurrency. ~ Experience with event-driven and service-oriented systems (gRPC or other RPC, Kafka, RabbitMQ, or similar) and with Kubernetes. ~ Demonstrated care for correctness: testing strategy, edge-case analysis, reconciliation, and safe production rollout. ~ Experience with workflow orchestration (Temporal or similar) for long-running processes such as margin-call lifecycles. Experience with observability and production performance tuning. New Hire Home-Office Setup: One-time USD $500

📌 {Senior,Staff} Software Engineer (España)
🏢 Alpaca
📍 España