Client profile
Market-making operation running continuous execution with recurring reliability regressions and unclear service ownership.
The problem
Market-making has a reliability challenge that general engineering reliability frameworks don’t address well. The cost of a missed quote or a degraded spread isn’t always visible in a system dashboard. The system keeps running. Alerts don’t fire. But inventory imbalances accumulate, position drift compounds, and by the time anyone notices, the P&L impact has already happened.
This operation had recurring incidents — not catastrophic failures, but the kind of persistent, lower-grade degradation that erodes profitability over time. The same failure modes were appearing in post-mortems repeatedly. The problem wasn’t that engineers didn’t know how to fix them. It was that ownership was diffuse enough that no one was accountable for keeping them fixed. Fixes got applied, then quietly regressed.
The market-making context mattered here. Understanding how the business made money — spread capture, inventory management, rebalancing under volatility — was the foundation for deciding what reliability meant in this environment. Not all uptime is equal. A service that is technically running but producing stale quotes has a real cost. Reliability standards needed to reflect that.
Scope
- Diagnose recurring incidents and failure patterns
- Define reliability standards for critical execution services
- Strengthen handoffs between trading, platform, and operations teams
Approach
Performed an incident taxonomy across the prior twelve months — not to assign blame, but to identify structural patterns. The same failure modes, in slightly different forms, were appearing across data ingestion, order orchestration, and inventory reporting.
SLOs and alert thresholds were set against business impact, not technical availability metrics. An alert that fires when inventory rebalancing is delayed by more than a defined threshold is more useful to a market-making operation than a generic latency SLO.
Ownership boundaries and handoff checkpoints were redesigned with the goal of eliminating the gaps where recurring failures lived. Weekly reliability review was introduced with mandatory action closure tracking — not as a reporting exercise, but as an accountability mechanism.
Results
- Fewer repeat incidents and faster incident containment
- Clearer accountability for platform reliability outcomes
- More predictable uptime and execution continuity during stress windows