01
Direct Access
You talk directly to engineers who inspect the system, name the tradeoffs, and do the work.
What We Solve
Win microseconds. Control p99.9. Stay deterministic.
We design, audit, and rebuild trading infrastructure for teams competing at microsecond precision. We fix jitter, queues, packet drops, recovery gaps, protocol edge cases, and observability blind spots.
That usually shows up as tail latency p99.9 kills PnL even when p50 looks great, jitter from non-deterministic execution paths, feed gaps, replay inconsistency, broken recovery, and protocol complexity: ITCH, OUCH, FIX, native APIs, throttles.
What You Get
- Deterministic execution with tight variance control
- Tick-to-trade pipeline optimized for p99.9, not averages
- Order routing with recovery logic, throttling, and failover
- Market data engines: feed handlers, parsers, order book builders
- Latency observability: heatmaps, tracing, deterministic replay, and reproducible benchmarking
Stack and Capabilities
Networking and Kernel Bypass
- DPDK, zero-copy RX/TX, lock-free rings
- XDP, AF_XDP fast paths
- RSS, flow steering, NIC tuning
- Microburst mitigation, queue discipline, buffer strategy
Time and Latency Measurement
- PTP synchronization and clock discipline
- Hardware NIC timestamping
- SO_TIMESTAMPING and end-to-end breakdown
- p50, p99, p99.9 tail analytics
Market Data and Protocols
- Feed handlers, normalizers, binary parsers
- Order book builders, gap recovery, replay
- ITCH, OUCH, FIX, native exchange APIs
- SBE and custom binary codecs
Execution Engines
- C++ and Rust, deterministic state machines
- NUMA-aware design, CPU affinity, memory pinning
- Cache line alignment, huge pages
- Inline ASM only where it pays off
Reliability Under Volatility
- Backpressure design, load shedding, stable recovery
- Kill switch, limits, pre-trade risk without chaos
- Deterministic failover, warm standby patterns
- Incident-grade diagnostics and test harnesses
Hardware Acceleration
- FPGA deterministic paths, ROI-driven
- Wire-to-decision optimization
- CPU plus FPGA co-design without over-engineering
- Targeted acceleration: parse, filter, risk, route
Why Teams Choose SToFU Systems
Senior-led delivery. Clear scope. Direct technical communication.
02
Bounded First Step
Most engagements start with a review, audit, prototype, or focused build instead of a giant retained scope.
03
Evidence First
Leave with clearer scope, sharper priorities, and a next move the business can defend under scrutiny.
Delivery
Senior-led
Direct technical communication
Coverage
AI, systems, security
One team across the stack
Markets
Europe, US, Singapore
Clients across key engineering hubs
Personal data
Privacy-disciplined
GDPR, UK GDPR, CCPA/CPRA, PIPEDA, DPA/SCC-aware