Sr. Backend Engineer I - US Stocks

Overview

Sr. Backend Engineer I on the US Stocks team, building and maintaining backend services that let Indonesian investors trade US stocks, covering orders, balances, market data, portfolio and corporate actions.

What you'll do

• Design, build and maintain backend services and APIs for US stock trading, funding and portfolio features.
• Deliver features from technical design to production, with tests, monitoring and alerting.
• Integrate with US brokerage and custody partners, and make those integrations handle failures, delays and duplicate messages safely.
• Make sure money, quantities, prices and currency conversion are handled accurately, with clear audit trails.
• Support reconciliation between our records and our partners' records, and help fix mismatches at the root.
• Write clean, well-tested code and take an active part in code reviews.
• Investigate production issues, find root causes and help ship lasting fixes.
• Work with Product, Operations and Compliance to turn requirements into reliable solutions.
• Learn to build and scale Smart Order Routing (SOR) logic, integrating with multiple Liquidity Providers (e.g., Alpaca) and handling complex order lifecycles and partial fills across different venues.
• Handle real-time market data streaming and manage strict rate limits across concurrent external partner APIs.

What you'll need

• Bachelor's degree in Computer Science or equivalent practical experience.
• 4+ years of professional backend engineering, including running services in production.
• Strong in Java or Go.
• Good understanding of microservices, REST/gRPC APIs, event-driven design and reliability basics.
• Hands-on with relational databases (query tuning), caching (Redis) and messaging (Kafka).
• Experience with cloud platforms (GCP or AWS), containers and CI/CD.
• Ownership mindset and clear communication.
• A fierce appetite for learning complex domain logic.
• A proven ability to learn systems quickly.

Nice to have

• Experience in brokerage, trading, payments, cross-border money movement or another regulated environment.
• Familiarity with modern API-first brokerages (e.g., Alpaca, DriveWealth) or the FIX protocol.

Details

• Location: Jakarta, Indonesia.
• Hybrid work arrangement, combining remote and office work.