Senior Java Low-Latency Engineer (Hybrid)

Wissen Technology; Chicago (IL); Hybrid; USD 180,000 - 260,000; Full time

Benefits offered by this job

Healthcare insurance

Short/Long term disability insurance

Life Insurance

Immigration support

Remote office setup stipend

3 weeks of Paid Time Off

Certification support

Additional cash incentives

Re-skilling opportunities

Job summary

Wissen Technology in Chicago seeks an AVP/VP to lead a high‑performance Java platform for market data. You will own feed handlers, event processing, and latency‑critical paths, collaborating with trading and infrastructure teams.

Ideal candidates have 8–12 years’ experience, graduate degree in CS or engineering, and proven ability to tune JVM, optimize memory, and implement low‑latency designs. The role is onsite with hybrid options and offers extensive growth within a global tech consulting

Qualifications

• Java 17/21 with strong JVM internals including memory model, JIT, and GC behavior.
• Low-allocation techniques and off-heap buffers.
• Concurrency using lock-free patterns and memory barriers (VarHandles).
• Networking and market data messaging (TCP/UDP, multicast, kernel bypass).
• Experience with FIX protocol and market data semantics.

Responsibilities

• Build feed handlers, event processing pipelines, and distribution components on the critical path.
• Design event flows preserving ordering and handling gaps and recovery under load.
• Benchmark latency at p50/p99/p99.9 and prevent regressions.
• Diagnose production latency issues with JVM profilers and Linux tools.
• Support capacity planning, failover design, and on-call production coverage.

Skills

Java 17/21

Low-allocation programming

Concurrency: VarHandles

Networking: TCP/UDP

Linux performance tooling

FIX protocol knowledge

Education

Graduate degree in CS/Engineering

Job description

Wissen Technology in Chicago seeks an AVP/VP to lead a high‑performance Java platform for market data. You will own feed handlers, event processing, and latency‑critical paths, collaborating with trading and infrastructure teams.

Ideal candidates have 8–12 years’ experience, graduate degree in CS or engineering, and proven ability to tune JVM, optimize memory, and implement low‑latency designs. The role is onsite with hybrid options and offers extensive growth within a global tech consulting