Sr. Backend Engineer II - US Stocks

Overview

Own larger, more complex backend services for trading US stocks, from design to production, including order flow to brokerage partners, balances and currency conversion, market data, portfolio and corporate actions.

What you'll do

• Design, build and run scalable, secure backend services and APIs for trading, funding, market data and portfolio features.
• Own larger features and services end to end, including monitoring, alerting and on-call follow-up.
• Design for correctness first: accurate money and quantity handling, idempotent requests, safe retries and audit trails.
• Integrate with US brokerage and custody partners, making those integrations resilient to outages, delays and duplicate or out-of-order messages.
• Build and improve reconciliation between our records and our partners' records, and drive root-cause fixes for mismatches.
• Handle US-specific events correctly, such as market hours, dividends, stock splits and settlement timing.
• Keep services fast and stable at US market open and during volatile days, and plan capacity ahead of known events.
• Lead design reviews and give thoughtful code reviews.
• Investigate production incidents, run root cause analysis and ship lasting fixes.
• Mentor mid-level engineers and share knowledge within the team.
• Design resilient, low-latency order routing logic to manage execution across multiple Liquidity Providers (LPs) and venues, handling rate limits, partial fills, and complex order lifecycles.
• Proactively identify systemic risks across the US Stocks domain and propose architectural improvements, acting as a technical bridge to Staff engineers.

What you'll need

• Bachelor's degree in Computer Science or equivalent practical experience.
• 5+ years of professional backend engineering, with a track record of owning production services under high traffic.
• Strong in Java, Go or another modern backend language.
• Solid understanding of microservices, REST/gRPC APIs, event-driven design, and reliability and observability practices.
• Hands-on with relational and NoSQL databases (query tuning), caching (Redis) and messaging (Kafka).
• Experience running services on cloud platforms (GCP or AWS), with containers and CI/CD.
• Ownership mindset and clear communication.

Nice to have

• Experience in brokerage, trading, payments, cross-border money movement or another regulated environment.
• Deep understanding of modern API-first brokerage platforms (e.g., Alpaca, Interactive Brokers) or crypto exchanges, including WebSocket streaming for market data and FIX protocol fundamentals.

Details

• Fully remote work arrangement; the benefits also mention a hybrid option to work from the office.