Job Description
Citi’s Equities Technology organization is seeking a Low‑Latency Java Data Systems Engineer to join the Equities Electronic Execution technology team. This role focuses on building and operating data‑plane foundations for Citi’s electronic trading ecosystem.
Responsibilities
Design and build low‑latency Java data pipelines that process order lifecycle and market data events with strict guarantees around ordering, sequencing, determinism, and replay.
Develop GC‑sensitive, data‑plane Java systems, using off‑heap memory, binary protocols, and low‑contention concurrency to achieve predictable latency.
Implement resilient fan‑out, back‑pressure, and recovery mechanisms to support multiple downstream consumers without compromising latency or correctness.
Work directly with FIX and exchange‑driven message flows, handling sequencing gaps, snapshot/replay, session lifecycle, and state reconstruction.
Own and reason about explicit latency bud...
Responsibilities
Design and build low‑latency Java data pipelines that process order lifecycle and market data events with strict guarantees around ordering, sequencing, determinism, and replay.
Develop GC‑sensitive, data‑plane Java systems, using off‑heap memory, binary protocols, and low‑contention concurrency to achieve predictable latency.
Implement resilient fan‑out, back‑pressure, and recovery mechanisms to support multiple downstream consumers without compromising latency or correctness.
Work directly with FIX and exchange‑driven message flows, handling sequencing gaps, snapshot/replay, session lifecycle, and state reconstruction.
Own and reason about explicit latency bud...