Senior Software Engineer - Corporate Actions & Security Master

About Alpaca

Alpaca is a US-headquartered, global leader in agent-first brokerage infrastructure for stocks, ETFs, options, crypto, fixed income, 24/5 trading, and more. Serving hundreds of financial institutions across 40 countries with institutional-grade APIs, Alpaca powers over 10 million brokerage accounts for broker-dealers, investment advisors, wealth managers, hedge funds, and crypto exchanges.

Alpaca is backed by $400 million in funding from top-tier global 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 a dynamic team of 400+ globally distributed members working across the USA, Canada, Japan, Hungary, Nigeria, Brazil, the UK, and beyond.

About the Role

As a Senior Software Engineer on the Reference Data team, you will build services that form the data backbone of Alpaca’s brokerage infrastructure. Almost every service at Alpaca needs information about the assets it operates on. Our team provides that information and supports the events that affect those assets throughout their lifecycle.

The team owns two core areas:

• Security Master: The central source of information about tradable assets, their characteristics, and trading rules.
• Corporate Actions: Ingesting third-party information about dividends, stock splits, mergers, and other events, then calculating the changes and transactions needed to reflect them in customer and partner holdings.

This is a hands-on backend engineering role focused on distributed systems, data modeling, and correctness across interconnected services. You will take open-ended problems from scoping and design through implementation, rollout, and production support.

Responsibilities

• Design, build, and maintain distributed backend services, APIs, and data models for Security Master and corporate actions.
• Extend reference data systems to support new instruments, asset classes, and market-specific requirements, including futures and prediction markets.
• Build reliable workflows for ingesting, validating, and processing third-party instrument and corporate action information.
• Develop internal tools and automation that reduce manual work and improve the reliability of reference data operations.
• Help redesign how foundational asset information is structured and shared across Alpaca, contributing to architectural decisions with company-wide impact.
• Work closely with engineering and business teams that consume reference data, coordinating changes across services.
• Own complex features and technical decisions from design through production, including testing, troubleshooting, and continuous improvement.

Requirements

• Strong experience building and operating event-driven, distributed backend systems.
• Strong database and data-modeling skills, with an understanding of eventual consistency and data replication.
• Excellent system design fundamentals, including designing and evolving APIs.
• Proficiency in a strongly typed programming language and willingness to work in Go.
• Experience taking complex or ambiguous problems from initial requirements through delivery and production operation.
• Ability to explain technical decisions and trade-offs clearly, collaborate across teams, and reason through cross-system dependencies.
• Senior-level engineering judgment and ownership.

Nice-to-Haves

• Experience in trading, brokerage, capital markets, crypto infrastructure, or related financial technology.
• Experience with reference data, Security Master, instrument or asset data, or corporate action processing.
• Understanding of financial instruments, particularly options, futures, and other derivatives.
• Experience with third-party data ingestion, internal tooling, and workflow automation.
• Experience guiding other engineers and working across interconnected services and teams.

Benefits & Perks

• Competitive salary & stock options
• Comprehensive health benefits
• One-time $500 USD home-office setup allowance
• Monthly $150 USD stipend via Brex Card