Software Engineer - Database - Bitnomial

As a Software Engineer focused on Database systems at Bitnomial, you build the services and data models that record every order, fill, and settlement at a CFTC-regulated exchange and clearinghouse. Bitnomial, part of Payward (parent company of Kraken), operates a US-based global derivatives exchange with crypto-settled futures, options, and perpetual futures used by institutions worldwide. The exchange, clearinghouse, and brokerage systems are written largely in Haskell, and you will design the schema, queries, and migrations that sit at the core of these systems.

What you'll do

• Build, test, and ship well-typed, well-reviewed features and fixes in Haskell services across the exchange, clearinghouse, and brokerage
• Understand the order, trade, clearing, and settlement flows end to end
• Design schema, constraints, and indexes for new features, using exact numeric types and audit trails so financial values cannot drift
• Write migrations that are lock-safe and reversible on large tables, and review the migrations of other engineers
• Read execution plans, find slow queries from production metrics, and fix the cause in the query, the index, or the access pattern
• Monitor systems, respond to alerts, and support daily operations such as settlement cycles
• Fix the cause of production issues and document what you learned

What you bring

• 3+ years of professional software engineering experience with a functional or strongly typed programming language such as Haskell, Rust, or C++
• Strong SQL and PostgreSQL skills, including transactions and isolation levels
• Solid computer science fundamentals in data structures, concurrency, and distributed systems: replication, consistency, retries and idempotency, and how services keep shared data correct when parts fail
• Willingness to take part in on-call and operational shifts
• Care and rigor with code and data that move money; you measure before you tune
• Good judgment with AI tools, using them to work faster while reading, testing, and understanding output before shipping
• A habit of asking why before changing something
• Sound judgment under pressure, with a calm and methodical approach when production is live
• Ability to collaborate across engineering, operations, risk, and compliance, with a habit of documenting

Nice to have

• Financial knowledge or experience in trading, markets, or financial services
• Bachelor's degree in computer science or a related field, or equivalent experience
• Haskell experience, particularly with PostgreSQL-backed services
• Production experience with AWS Aurora PostgreSQL
• Experience with time series or market data at volume, such as tick data, order books, or event streams
• Experience with Atlas or another declarative schema management tool

About Bitnomial and Payward

Bitnomial, part of Payward, is building a next-generation US-based global derivatives exchange regulated by the CFTC. Payward operates one of the industry's most modern financial infrastructure platforms, including Kraken, NinjaTrader, Breakout, xStocks, and CF Benchmarks, serving to advance an open, global financial system.