Java Aeron Developer

Signify Technology; New York (NY); Hybrid; USD 150,000 - 225,000; Full time

Job summary

Signify Technology in New York is seeking a Senior Low Latency OEMS Engineer (Java) to own latency-critical components of the firm’s Order and Execution Management System, built on a deterministic, event-driven core with FIX links to brokers.

You will work in a hybrid environment, collaborating across desks in New York, London, and Tokyo, applying AI-guided coding, and driving production readiness from development through deployment.

Qualifications

• 6+ years Java experience in low-latency environments.
• 3+ years of hands-on work with order/EMS/OMS or HFT systems.
• Experience with Aeron/SBE-based architectures and FIX protocols.

Responsibilities

• Build latency-critical logic for order lifecycle and pre-trade risk.
• Own market-facing gateways and APIs (FIX, Aeron/SBE).
• Apply zero-allocation, GC-free techniques and off-heap buffers.
• Benchmark latency with JMH and distributed tracing.
• Develop and enforce guardrails for AI coding agents used in production.
• Support deployment, CI/CD, and cross-region DR.

Skills

Java (JDK)

Low latency

Aeron

SBE/Protobuf

FIX

GC tuning

Linux

CI/CD

Tools

Aeron tooling

Agrona

Chronicle

LMAX Disruptor

Artio/QuickFIX/J

Job description

Senior Low Latency OEMS Engineer (Java)

Permanent | New York, NY (Hybrid) | $150,000–$225,000 base + discretionary bonus + full benefits

The Client

An established multi-strategy hedge fund with a global footprint, known for a disciplined, tech- and data-driven approach to trading and risk.

The Role

Join the team building and running the firm's in-house Order and Execution Management System — a deterministic, event-driven platform on a clustered Aeron/SBE core with FIX links to executing brokers. It's the path every order takes from trader to market, serving desks in New York, London and Tokyo, live on equities and expanding into new asset classes. You'll own latency-critical components end to end, and work AI-first: coding agents are part of daily design, build, review and production work.

What You'll Do

• Build zero-allocation, latency-critical logic in the sequenced core: order lifecycle, pre-trade risk, broker routing, position marking
• Own market-facing gateways: FIX (initiator/acceptor), a client-facing Aeron/SBE API, Kafka/Protobuf integrations
• Apply hot-path Java tricks: object/buffer reuse, primitive collections, flyweight codecs, off-heap buffers, GC-free steady state
• Benchmark and tune latency with JMH, hop-to-hop production timing and distributed tracing
• Drive correctness with BDD, snapshot/replay-equivalence and integration tests
• Use AI coding agents daily and help evolve the team's shared agent rules, skills and guardrails
• Support deployment: containers, config-managed releases, CI, cross-region DR

What You'll Bring

• Expert Java (current JDK), deep low-latency chops: allocation-free code, mechanical sympathy, lock-free/single-writer design
• Aeron (transport/archive/cluster) + Agrona, or equivalent (Chronicle, LMAX Disruptor)
• SBE and/or Protobuf; FIX session/application level (Artio or QuickFIX/J a plus)
• GC tuning for low latency (ZGC, Shenandoah, G1), JIT/escape analysis, JFR or async-profiler
• Real, hands-on use of AI coding agents (e.g. Claude Code, Cursor, Codex) on production work — including knowing when to override them
• 6+ years Java, 3+ years on low-latency trading systems (OMS/EMS, exchange/broker gateways, market data, or HFT)
• Track record owning a production trading system on Linux, incident response included
• CI/CD, containers (Docker/Podman), config management (Ansible or similar), AWS

Nice to Have

• Python
• Equities experience

Accessibility Statement

We make an active choice to be inclusive towards everyone every day.?

Please let us know if you require any accessibility adjustments through the application or interview process.

Our Commitment To Diversity, Equity, And Inclusion

Signify’s mission is to empower every person, regardless of their background or?circumstances, with an equitable chance to achieve the careers?they deserve. Building a diverse future, one placement at a?time.

Check out our DE&I page here