About the job
Who We Are:
Alpaca, a leading US-based self-clearing broker-dealer, provides brokerage infrastructure for trading stocks, ETFs, options, cryptocurrencies, fixed income, and more, operating 24/5. Our recent Series D funding has raised over $320 million, propelling us toward our ambitious goals.
We are a licensed financial services company with a strong presence across 40 countries, serving hundreds of financial institutions through our institutional-grade APIs, including broker-dealers, investment advisors, wealth managers, hedge funds, and crypto exchanges, totaling over 9 million brokerage accounts.
Our diverse global team comprises experienced engineers, traders, and brokerage professionals dedicated to our mission of making financial services accessible to everyone. We are passionate about open-source contributions and nurturing a vibrant community, continuously enhancing our award-winning, developer-friendly API and robust infrastructure.
Alpaca is proudly supported by top-tier global investors, including Portage Ventures, Spark Capital, Tribe Capital, Social Leverage, Horizons Ventures, Unbound, SBI Group, Derayah Financial, Elefund, and Y Combinator.
Our Team Members:
We are a dynamic team of over 230 globally distributed members, thriving while working from various locations around the world, with teammates in the USA, Canada, Japan, Hungary, Nigeria, Brazil, the UK, and beyond!
We are looking for passionate individuals eager to contribute to Alpaca's rapid growth. If you resonate with our core values—Stay Curious, Have Empathy, and Be Accountable—and are ready to make a significant impact, we encourage you to apply.
Your Role:
As a Senior Engineer, you will design, implement, and maintain the systems and services that underpin Alpaca, empowering millions of users engaged in trading billions of dollars’ worth of assets.
The Ledger Team is tasked with developing a modern ledger system to provide a comprehensive and accurate view of all account activities. The ledger is vital for recording and aggregating transactional data, supporting financial reporting, decision-making, and compliance. From an engineering standpoint, the ledger acts as the source of truth for financial transactions and balances.

